Merge pull request 'ci(release): publie les images Docker sur le registre Forgejo' (#145) from feat/release-push-docker-images into main

Reviewed-on: #145

.env.example

@@ -15,26 +15,42 @@ JWT_SECRET=changeme-generate-a-real-random-secret-at-least-32-chars
 # (docker-compose.yml), serving both the API and the built frontend.
 # APP_PORT=3000
 
-# --- Admin application (apps/admin-web + the /admin/* API surface) ---------
+# Optional — tag of the prebuilt images the release CI pushes to the Forgejo
+# container registry (git.dev.kyuno.fr/kyuno/batchcooking-{app,intent-service,
+# llm-worker}). Used by `docker compose pull` and a pull-based Portainer
+# stack; leave it `latest` or pin a release tag (e.g. v0.2.4). Ignored when
+# building locally instead (`docker compose build`, or `up` with no image
+# present) — see docker-compose.yml's `image:`/`build:` comment.
+# IMAGE_TAG=latest
+
+# --- Admin surface (apps/web's /admin/* routes + the /admin/* API) --------
 # All optional: an instance that doesn't run the admin app needs none of
 # these. `requireAdmin` fails closed when ADMIN_JWT_SECRET is unset, so
-# leaving it out simply disables every /admin/* route.
+# leaving it out simply disables every /admin/* route. The admin UI is
+# served by the same app/container as the rest of the frontend — no
+# separate origin, so no CORS entry of its own.
 #
 # Secret for the admin session JWT — MUST be different from JWT_SECRET so an
 # end-user token can never be replayed against /admin/*. Generate your own
 # the same way as JWT_SECRET above.
 # ADMIN_JWT_SECRET=changeme-generate-a-real-random-secret-at-least-32-chars
-# Origin apps/admin-web is served from, added to the CORS allow-list.
-# ADMIN_CORS_ORIGIN=http://localhost:5174
-# Host port for the Docker `admin-web` service (static nginx serving the
-# built admin frontend).
-# ADMIN_WEB_PORT=3001
 # Optional — read only by `src/scripts/create-admin.ts` when its --email /
 # --password / --name flags are omitted (e.g. to bootstrap the first admin
 # from inside the container). Never read by the running server.
 # ADMIN_INITIAL_EMAIL=ops@example.com
 # ADMIN_INITIAL_PASSWORD=changeme-at-least-8-chars
 # ADMIN_INITIAL_NAME=Ops
+#
+# Optional — lets an admin open a Forgejo ticket from a contact message
+# (apps/web's /admin/messages, issue #81). All three needed together: the
+# button stays hidden and the endpoint answers 503 unless all are set to a
+# non-empty value. docker-compose.yml forwards these into the "app"
+# container, so setting them here is enough (a blank value counts as
+# unset). FORGEJO_TOKEN is a personal access token with the write:issue
+# scope — generate it in Forgejo, never commit the real value.
+# FORGEJO_BASE_URL=https://git.example.com
+# FORGEJO_TOKEN=changeme-a-forgejo-personal-access-token
+# FORGEJO_REPO=owner/repo
 
 # Optional — only set this to false if THIS deployment is served over
 # plain HTTP (no TLS in front of it). Left unset, the session cookie

.github/workflows/ci.yml

@@ -12,6 +12,15 @@ on:
   push:
 
 env:
+  # Hostname `postgres` = the container the `test` job starts itself (see
+  # that job's "Start Postgres" step) — a plain `docker run`, not a
+  # `services:` block, for the same reason the intent-service below can't be
+  # one: this repo's Forgejo `act` runner does not keep a `services:`
+  # container as the *same* instance across a job's steps, so `migrate
+  # deploy` would land the schema in one Postgres and `pnpm --filter api
+  # test`'s `beforeAll` would then hit an empty one ("table … does not
+  # exist" right after "migrations successfully applied"). One long-lived
+  # container in the job, shared by every step, removes that failure mode.
   DATABASE_URL: "postgresql://ci:ci@postgres:5432/batchcooking_ci?schema=public"
   # Test-only secret, never used outside CI — real deployments must set their own.
   JWT_SECRET: "ci-only-secret-not-used-anywhere-else-32chars+"
@@ -24,11 +33,19 @@ env:
   # secret configured -> 401" path.
   ADMIN_JWT_SECRET: "ci-only-admin-secret-not-used-anywhere-else-32chars+"
   # Shared between the `test` job's own uvicorn step (below) and apps/api's
-  # IntentServiceClient — see the `test` job for why this can't be a
+  # IntentServiceClient — that step runs `uvicorn` as a plain background
-  # `services:` container like postgres above (GitHub Actions can only pull
+  # process (not a `services:` block or even a container) because CI can
-  # a published image, not build services/tech-step-intent-service/Dockerfile).
+  # only pull a published image, not build
+  # services/tech-step-intent-service/Dockerfile from this checkout.
   INTENT_SERVICE_BASE_URL: "http://localhost:8000"
   INTENT_SERVICE_SECRET: "ci-only-intent-secret-not-used-anywhere-else-32chars+"
+  # Same reasoning — lets forgejo.service.test.ts / admin-contact.test.ts
+  # exercise the "configured" path (issue #81). `globalThis.fetch` is stubbed
+  # in those tests, so no real request ever leaves CI; these values only need
+  # to parse (a valid URL and an `owner/repo`).
+  FORGEJO_BASE_URL: "https://forgejo.ci.invalid"
+  FORGEJO_TOKEN: "ci-only-forgejo-token-not-used-anywhere-else"
+  FORGEJO_REPO: "ci/batchcooking"
 
 jobs:
   # Five independent jobs, no needs: between them — each starts in parallel
@@ -51,21 +68,97 @@ jobs:
 
   test:
     runs-on: ubuntu-latest
-    services:
+    # ~16-19 min of actual work (runs 117-124); the extra budget covers time
-      postgres:
+    # spent queued in "Wait for any earlier test job" below. Also a runaway
-        image: postgres:16-alpine
+    # ceiling — Mocha has no `--exit` (`apps/api/.mocharc.json`), so one
-        env:
+    # leaked handle would otherwise hang the job until the runner's global
-          POSTGRES_USER: ci
+    # timeout (a `test` job zombied ~1h once). If a hung job hits this
-          POSTGRES_PASSWORD: ci
+    # ceiling the runner removes its container, which unblocks the queue.
-          POSTGRES_DB: batchcooking_ci
+    timeout-minutes: 45
-        ports:
-          - 5433:5432
-        options: >-
-          --health-cmd pg_isready
-          --health-interval 5s
-          --health-timeout 5s
-          --health-retries 10
     steps:
+      - name: Install curl and the docker CLI
+        run: |
+          apt-get update && apt-get install -y curl docker.io
+
+      # Serialize `test` across every concurrent run. Two `test` jobs must
+      # never overlap: they share one `--name postgres` container on the
+      # runner's shared docker network (next step), so their `prisma migrate
+      # deploy` + `seedReferenceData` (root Mocha `beforeAll`) race —
+      # `Unique constraint failed on (key)` in `seedReferenceData`, "No
+      # pending migrations" when there should be some, `tech_step`/`diet` id
+      # shifts breaking unrelated assertions; and even past that they starve
+      # each other's RAM/CPU (each also trains a spaCy model) until
+      # `resetDatabase()` overruns Mocha's 10s hook timeout and cascades.
+      # Hit repeatedly (PRs #47, #53, #54), each needing an empty-commit
+      # re-trigger once the runner was idle.
+      #
+      # GitHub's `concurrency:` is the native fix but this Forgejo (9.0.3)
+      # predates Actions `concurrency` — it arrived in Forgejo v14 / Gitea
+      # 1.26 and is silently ignored here. A lock object (network, container,
+      # file) would leak: this runner (forgejo-runner v3.5.0) does NOT run a
+      # trailing `if: always()` step after an earlier step fails, so there is
+      # no reliable in-job release. Instead, key off the one thing the runner
+      # *does* always clean up — the job container itself (removed on pass,
+      # fail, and cancel alike): wait while any lower-numbered `test` job's
+      # container is still running. Lower task id goes first, so two jobs
+      # that start together can't deadlock; nothing to release.
+      - name: Wait for any earlier test job
+        run: |
+          my_id="$(printf '%s\n' "${JOB_CONTAINER_NAME:-}" | sed -n 's/.*TASK-\([0-9]\{1,\}\).*/\1/p')"
+          echo "this test job is task ${my_id:-<unknown, not serializing>}"
+          # ~25 min cap (75 * 20s): comfortably covers one earlier run
+          # (the realistic overlap is two runs); a rarer 3-way pile-up whose
+          # wait exceeds this just fails and gets an empty-commit re-run.
+          for attempt in $(seq 1 75); do
+            earlier="$(docker ps --format '{{.Names}}' 2>/dev/null \
+              | sed -n 's/.*TASK-\([0-9]\{1,\}\)_.*_JOB-test$/\1/p' \
+              | awk -v me="${my_id:-0}" 'NF && ($1 + 0) < (me + 0)')"
+            if [ -z "$earlier" ]; then
+              [ "$attempt" -gt 1 ] && echo "earlier test job(s) finished — proceeding"
+              exit 0
+            fi
+            echo "waiting for earlier test job(s): $(printf '%s ' $earlier)(attempt ${attempt})"
+            sleep 20
+          done
+          echo "still blocked by an earlier test job after ~25 min — giving up; a re-run should get through" >&2
+          exit 1
+
+      # Postgres as a plain background container instead of a `services:`
+      # block — see this workflow's top-level `env.DATABASE_URL` comment for
+      # why. Reachable as `postgres` from this job (the runner mounts the
+      # docker socket and runs jobs on a shared user-defined network, so a
+      # `--name postgres` sibling resolves by name); the network is
+      # discovered from the job container itself rather than hardcoded. The
+      # `docker rm -f postgres` below also clears a container left behind by
+      # the previous run (this runner has no reliable post-job cleanup), and
+      # the serialization step above means no other run is using it now.
+      - name: Start Postgres in the background
+        run: |
+          net="$(docker inspect "$(hostname)" \
+            --format '{{range $k, $_ := .NetworkSettings.Networks}}{{$k}} {{end}}' \
+            | awk '{print $1}')"
+          echo "job network: ${net:?could not determine the job container network}"
+          docker rm -f postgres >/dev/null 2>&1 || true
+          # Also drop any `postgres-<suffix>` container. A since-reverted
+          # attempt at per-run Postgres naming on this branch left some
+          # running on this persistent runner (their `if: always()` teardown
+          # never fired — this runner skips trailing steps after a failure),
+          # and nothing else removes them. A second idle Postgres here starves
+          # the runner's RAM and slows every query ~5x → `resetDatabase()`
+          # blows Mocha's 10s hook timeout. Nothing creates `postgres-*` any
+          # more, so this only ever clears that debris.
+          docker ps -aq --filter 'name=^postgres-' | xargs -r docker rm -f >/dev/null 2>&1 || true
+          docker run -d --name postgres --network "$net" \
+            -e POSTGRES_USER=ci -e POSTGRES_PASSWORD=ci -e POSTGRES_DB=batchcooking_ci \
+            postgres:16-alpine
+          for _ in $(seq 1 60); do
+            docker exec postgres pg_isready -U ci -d batchcooking_ci && exit 0
+            sleep 2
+          done
+          echo "Postgres did not become ready in time" >&2
+          docker logs postgres || true
+          exit 1
+
       - uses: https://github.com/actions/checkout@v4
 
       - uses: pnpm/action-setup@v4
@@ -80,15 +173,14 @@ jobs:
           python-version: "3.12"
           enable-cache: true
 
-      # `services:` (like the `postgres` container above) can only pull an
+      # A `services:` block can only pull an already-published image — it
-      # already-published image — it can't build
+      # can't build services/tech-step-intent-service/Dockerfile from this
-      # services/tech-step-intent-service/Dockerfile from this checkout.
+      # checkout. Running `uvicorn` as a plain background step instead: it
-      # Running `uvicorn` as a plain background step instead: it keeps
+      # keeps running for the rest of this job (steps in one job share the
-      # running for the rest of this job (GitHub Actions steps in one job
+      # same process tree), and `pnpm --filter api test` below needs a real
-      # share the same runner process tree), and `pnpm --filter api test`
+      # instance to talk to per this repo's "never mock an internal service"
-      # below needs a real instance to talk to per this repo's "never mock
+      # test convention — same "real dependency, started by the job itself"
-      # an internal service" test convention — same reasoning as the real
+      # posture as the Postgres step above, not a mock HTTP server.
-      # `postgres` container just above, not a mock HTTP server.
       - name: Install services/tech-step-intent-service
         working-directory: services/tech-step-intent-service
         run: uv sync --frozen
@@ -98,11 +190,14 @@ jobs:
           uv run uvicorn intent_service.main:app --host 0.0.0.0 --port 8000 &
           # `/health` only returns 200 once this service has finished
           # training itself from scratch (no model ever persisted to disk —
-          # see its own README) — measured at ~540s (fr) / ~390s (en),
+          # see its own README) — measured at ~3min combined (fr+en) against
-          # ~930s combined, against the current ~74-technique corpus (see
+          # the current ~74-technique corpus, down from ~930s once
-          # docker-compose.yml's healthcheck for the same reasoning and why
+          # `spacy.TextCatBOW.v3`'s `length` stopped being left at its
-          # this grew slightly from the original ~670s).
+          # 262144 default (see `_TEXTCAT_MODEL_LENGTH` in
-          timeout 1200 bash -c 'until curl -sf http://localhost:8000/health > /dev/null; do sleep 2; done'
+          # `locale_pipeline.py`, and docker-compose.yml's healthcheck for
+          # the same reasoning). The timeout stays well above that: it's a
+          # ceiling for a slow/contended runner, not a target.
+          timeout 600 bash -c 'until curl -sf http://localhost:8000/health > /dev/null; do sleep 2; done'
 
       - run: pnpm install --frozen-lockfile
       - run: pnpm --filter api exec prisma migrate deploy
@@ -177,10 +272,90 @@ jobs:
       # `component.devServer`), unlike `e2e` above which needs the real app
       # running first.
       - run: pnpm --filter web cy:run:component
-      # The admin app's own Cypress suite (`apps/admin-web`) — its own dev
+
-      # server on :5174, all `/admin/*` calls mocked via `cy.intercept`
+  # Builds and packages a signed, downloadable Android APK on every push to
-      # (no live backend needed), same as the `web` e2e run above.
+  # `main` — issue #64. `needs:` on every other job is what actually makes
-      - name: Run admin-web E2E tests
+  # this "build, TEST, and package" rather than just "build and package in
+  # parallel with tests that might still be failing": Forgejo/GitHub Actions
+  # has no native way for a job in a *different* workflow file to block on
+  # one here, so this has to live in this same file to get a real dependency
+  # rather than a same-push coincidence. `if:` (not a separate trigger) keeps
+  # every other job running on every branch as today — only this one is
+  # main-only.
+  #
+  # No dedicated Android test suite exists (zero native code beyond the
+  # Capacitor-generated shell) — "testée" is satisfied by gating on the 5
+  # existing jobs, not by inventing an instrumented test suite for this.
+  #
+  # Unverified on this runner as of writing: no Android build has ever run
+  # on this self-hosted Forgejo `act` runner (unlike lint/test/build/e2e,
+  # exercised for months). If SDK installation turns out too slow/heavy here,
+  # cache `~/.android/sdk`/`~/.gradle` (same idea as the Cypress binary cache
+  # in `e2e` above) rather than accepting a slow job on every push.
+  build-android:
+    runs-on: ubuntu-latest
+    needs: [lint, test, intent-service-test, build, e2e]
+    if: github.ref == 'refs/heads/main'
+    steps:
+      - uses: https://github.com/actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+
+      - uses: https://github.com/actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: pnpm
+
+      - uses: https://github.com/actions/setup-java@v4
+        with:
+          distribution: temurin
+          # Matches what Android Gradle Plugin 8.x (bundled with the
+          # Capacitor-generated project, see apps/web/android/build.gradle)
+          # expects — bump alongside AGP if that version ever moves.
+          java-version: "21"
+
+      - uses: https://github.com/android-actions/setup-android@v3
+
+      - run: pnpm install --frozen-lockfile
+
+      # Unlike the normal web build (served same-origin as the API), a
+      # packaged Capacitor build runs from the WebView's own local origin and
+      # needs an absolute, public HTTPS URL baked in at build time — see
+      # apps/web/.env.capacitor.example's own comment on this.
+      - name: Build le bundle web pour Capacitor
         env:
-          HOST: "0.0.0.0"
+          VITE_API_URL: ${{ secrets.MOBILE_API_URL }}
-        run: pnpm --filter admin-web e2e
+        run: pnpm --filter web build:capacitor
+      - run: pnpm --filter web exec cap sync android
+
+      # Le keystore de release est un secret généré une fois à la main (voir
+      # le README, section "Application mobile") — jamais régénéré ici, un
+      # nouveau keystore casserait la mise à jour de l'appli déjà installée
+      # (Android refuse une signature différente de celle déjà installée).
+      - name: Décode le keystore de release
+        env:
+          ANDROID_KEYSTORE_BASE64: ${{ secrets.ANDROID_KEYSTORE_BASE64 }}
+        run: echo "$ANDROID_KEYSTORE_BASE64" | base64 -d > apps/web/android/app/release.keystore
+
+      - name: Build l'APK signé
+        working-directory: apps/web/android
+        env:
+          ANDROID_KEYSTORE_PATH: release.keystore
+          ANDROID_KEYSTORE_PASSWORD: ${{ secrets.ANDROID_KEYSTORE_PASSWORD }}
+          ANDROID_KEY_ALIAS: ${{ secrets.ANDROID_KEY_ALIAS }}
+          ANDROID_KEY_PASSWORD: ${{ secrets.ANDROID_KEY_PASSWORD }}
+        # chmod défensif : le dev de ce repo se fait sous Windows, où le bit
+        # exécutable git de gradlew ne veut rien dire et peut être reperdu
+        # silencieusement par un futur commit — ne pas dépendre uniquement
+        # du mode suivi par git (voir aussi le fix de ce mode lui-même).
+        run: |
+          chmod +x ./gradlew
+          ./gradlew assembleRelease
+
+      # v4+ exige l'API "Results" de GitHub, que ce runner Forgejo self-hosted
+      # ne supporte pas ("GHESNotSupportedError") — v3 utilise encore
+      # l'ancienne API Artifacts (compatible), seule version utilisable ici.
+      - uses: https://github.com/actions/upload-artifact@v3
+        with:
+          name: batchcooking-release.apk
+          path: apps/web/android/app/build/outputs/apk/release/app-release.apk

.github/workflows/release.yml

@@ -1,44 +1,243 @@
 name: Release
 
-# No image registry involved: Portainer is wired to this repo's Git remote
+# On a `vX.Y.Z` tag: build the three service images and push them to this
-# and builds/redeploys apps/api/Dockerfile itself. This workflow sanity-checks
+# Forgejo instance's built-in container registry (git.dev.kyuno.fr/<owner>/
-# that the image actually builds at the tagged commit, publishes a GitHub
+# batchcooking-{app,intent-service,llm-worker}, tagged with the release tag
-# Release, then (best-effort) pings Portainer's deploy webhook so it doesn't
+# and `latest`), build+attach a signed Android APK, publish a Forgejo
-# have to wait for its own polling interval.
+# Release, then (best-effort) ping Portainer's deploy webhook. Portainer can
+# pull those prebuilt images (docker-compose.yml references them via
+# ${IMAGE_TAG}) or keep building from the Git remote — `docker-compose.yml`
+# keeps a `build:` fallback next to every `image:`.
 on:
   push:
     tags: ["v*.*.*"]
 
 permissions:
   contents: write
+  # Lets this workflow's GITHUB_TOKEN push to the Forgejo container registry
+  # (the `build-and-push-images` job below `docker login`s with it). If a
+  # future instance policy scopes the run token tighter, swap that login's
+  # password for a `write:package` PAT added as a repo secret.
+  packages: write
 
 jobs:
-  sanity-build:
+  # Build the three service images at the tagged commit and push them to the
+  # Forgejo container registry. A successful push also *is* the "does it
+  # still build" check the old `sanity-build` job did (which only covered
+  # apps/api). One sequential job, not a per-image matrix: three concurrent
+  # `docker build`s hammer this single persistent runner's Docker daemon
+  # (the contended resource per project memory `ci-forgejo-runner-constraints`)
+  # for no real gain on a release, which is rare and usually runs alone.
+  build-and-push-images:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      # This runner's job containers don't come with docker preinstalled —
+      # same reason ci.yml's `test` job has to do this before its own
+      # `docker run` calls.
+      - name: Install docker
+        run: apt-get update && apt-get install -y docker.io
 
-      # Build only, no push, no registry — just confirms Portainer will be
+      - uses: https://github.com/actions/checkout@v4
-      # able to build this same Dockerfile successfully at this tag before
-      # anyone points it at this ref.
-      - run: docker build -f apps/api/Dockerfile .
 
-  github-release:
+      - name: Build et push des 3 images vers le registre Forgejo
+        env:
+          # The per-run token Forgejo Actions mints — has `packages: write`
+          # via this workflow's `permissions:` block. `docker login` accepts
+          # it as the password for the actor who pushed the tag.
+          REGISTRY_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          set -eu
+          # $GITHUB_SERVER_URL is "https://git.dev.kyuno.fr" — the registry
+          # is that same host. $GITHUB_REPOSITORY is "<owner>/<repo>"; the
+          # registry namespace is the owner, lower-cased (Forgejo package
+          # names are case-insensitive but the CLI wants a stable form).
+          registry="${GITHUB_SERVER_URL#http*://}"
+          owner="$(printf '%s' "${GITHUB_REPOSITORY%%/*}" | tr '[:upper:]' '[:lower:]')"
+          tag="$GITHUB_REF_NAME"
+          echo "$REGISTRY_TOKEN" | docker login "$registry" -u "$GITHUB_ACTOR" --password-stdin
+
+          # Every Dockerfile's build context is the repo root (see
+          # docker-compose.yml's `build.context: .`), hence the trailing `.`.
+          build_push() {
+            image="$registry/$owner/$1"
+            echo "::group::$1"
+            docker build -f "$2" -t "$image:$tag" -t "$image:latest" .
+            docker push "$image:$tag"
+            docker push "$image:latest"
+            echo "::endgroup::"
+          }
+          build_push batchcooking-app            apps/api/Dockerfile
+          build_push batchcooking-intent-service services/tech-step-intent-service/Dockerfile
+          build_push batchcooking-llm-worker     services/tech-step-llm-worker/Dockerfile
+
+  # Builds the same signed APK as ci.yml's build-android job (issue #64),
+  # with one difference: the version baked into the APK is derived from the
+  # tag itself rather than left at build.gradle's default. Duplicated here
+  # rather than factored into a shared `workflow_call` reusable workflow —
+  # deliberate: reusable-workflow support on this self-hosted Forgejo/act
+  # runner is unverified, and this ~15-line recipe is proven working as-is
+  # in ci.yml; not worth risking a new class of runner-compatibility surprise
+  # (this repo has already hit several — see ci-forgejo-runner-constraints
+  # in project memory) to save a little duplication. Keep both copies in
+  # sync if the Android build steps ever change.
+  build-android-apk:
     runs-on: ubuntu-latest
-    needs: sanity-build
     steps:
-      - uses: actions/checkout@v4
+      - uses: https://github.com/actions/checkout@v4
 
-      - uses: softprops/action-gh-release@v2
+      - uses: pnpm/action-setup@v4
+
+      - uses: https://github.com/actions/setup-node@v4
         with:
-          # Auto-generated from merged PRs since the previous tag — no
+          node-version: 22
-          # changelog tooling to maintain, consistent with there being no
+          cache: pnpm
-          # versioning tooling elsewhere in the repo yet.
+
-          generate_release_notes: true
+      - uses: https://github.com/actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: "21"
+
+      - uses: https://github.com/android-actions/setup-android@v3
+
+      - run: pnpm install --frozen-lockfile
+
+      - name: Build le bundle web pour Capacitor
+        env:
+          VITE_API_URL: ${{ secrets.MOBILE_API_URL }}
+        run: pnpm --filter web build:capacitor
+      - run: pnpm --filter web exec cap sync android
+
+      - name: Décode le keystore de release
+        env:
+          ANDROID_KEYSTORE_BASE64: ${{ secrets.ANDROID_KEYSTORE_BASE64 }}
+        run: echo "$ANDROID_KEYSTORE_BASE64" | base64 -d > apps/web/android/app/release.keystore
+
+      - name: Dérive versionName/versionCode depuis le tag
+        # GITHUB_REF_NAME = "v1.4.2" pour un tag `v1.4.2` — versionName =
+        # "1.4.2" (sans le `v`), versionCode = majeur*10000 + mineur*100 +
+        # correctif (ex. 1.4.2 -> 10402), un entier strictement croissant à
+        # chaque release comme Android l'exige (jamais réutilisé, jamais
+        # décroissant) tant que chaque partie reste sous 100 (largement
+        # suffisant ici). Exposé aux steps suivants via $GITHUB_ENV plutôt
+        # que recalculé.
+        run: |
+          tag="${GITHUB_REF_NAME#v}"
+          major="$(echo "$tag" | cut -d. -f1)"
+          minor="$(echo "$tag" | cut -d. -f2)"
+          patch="$(echo "$tag" | cut -d. -f3)"
+          # Préfixe 10# : force une lecture en base 10, sinon bash lirait
+          # un composant à zéro non significatif (ex. "08") comme de
+          # l'octal invalide et échouerait.
+          code=$((10#$major * 10000 + 10#$minor * 100 + 10#$patch))
+          echo "Version dérivée du tag $GITHUB_REF_NAME : versionName=$tag versionCode=$code"
+          echo "ANDROID_VERSION_NAME=$tag" >> "$GITHUB_ENV"
+          echo "ANDROID_VERSION_CODE=$code" >> "$GITHUB_ENV"
+
+      - name: Build l'APK signé
+        working-directory: apps/web/android
+        env:
+          ANDROID_KEYSTORE_PATH: release.keystore
+          ANDROID_KEYSTORE_PASSWORD: ${{ secrets.ANDROID_KEYSTORE_PASSWORD }}
+          ANDROID_KEY_ALIAS: ${{ secrets.ANDROID_KEY_ALIAS }}
+          ANDROID_KEY_PASSWORD: ${{ secrets.ANDROID_KEY_PASSWORD }}
+        run: |
+          chmod +x ./gradlew
+          ./gradlew assembleRelease -PandroidVersionName="$ANDROID_VERSION_NAME" -PandroidVersionCode="$ANDROID_VERSION_CODE"
+
+      # Nom de fichier stable, jamais versionné : la page d'accueil (#65)
+      # pointe vers /releases/latest (Forgejo n'a pas l'équivalent du
+      # raccourci GitHub /releases/latest/download/<fichier>, seul
+      # /releases/latest lui-même résout) — un nom stable évite au moins que
+      # l'utilisateur voie un nom de fichier différent à chaque release une
+      # fois sur la page.
+      - name: Renomme l'APK sous un nom stable
+        run: cp apps/web/android/app/build/outputs/apk/release/app-release.apk batchcooking.apk
+
+      # v4+ exige l'API "Results" de GitHub, non supportée par ce Forgejo
+      # self-hosted ("GHESNotSupportedError") — v3 (ancienne API Artifacts)
+      # est la seule utilisable ici, voir ci.yml's build-android pour la
+      # même contrainte déjà rencontrée.
+      - uses: https://github.com/actions/upload-artifact@v3
+        with:
+          name: batchcooking.apk
+          path: batchcooking.apk
+
+  forgejo-release:
+    runs-on: ubuntu-latest
+    needs: [build-and-push-images, build-android-apk]
+    steps:
+      # Ce runner ne fournit ni docker ni curl par défaut dans ses
+      # conteneurs de job — même constat déjà fait pour docker (voir
+      # build-and-push-images) et pour curl dans ci.yml's test job.
+      - name: Install curl
+        run: apt-get update && apt-get install -y curl
+
+      - uses: https://github.com/actions/checkout@v4
+
+      - uses: https://github.com/actions/download-artifact@v3
+        with:
+          name: batchcooking.apk
+
+      # softprops/action-gh-release (l'action GitHub habituelle pour ça)
+      # échoue systématiquement contre ce Forgejo : sa requête de création
+      # de release répond 405 (vérifié en conditions réelles, tag v0.2.0 —
+      # pas un souci de ref bare comme les autres actions de ce fichier,
+      # une vraie incompatibilité d'API entre les deux plateformes qui n'a
+      # pas de contournement connu côté configuration de l'action). Appelle
+      # directement l'API native de Forgejo plutôt qu'une action tierce
+      # dont la compatibilité GitHub-Forgejo n'est pas garantie.
+      #
+      # Pas d'équivalent à `generate_release_notes` ici (fonctionnalité
+      # propre à GitHub, pas répliquée par l'API Forgejo) — le corps de la
+      # release reste minimal, cohérent avec l'absence d'outillage de
+      # changelog ailleurs dans le repo.
+      - name: Crée (ou récupère) la Release Forgejo
+        id: create-release
+        env:
+          FORGEJO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          api="$GITHUB_API_URL/repos/$GITHUB_REPOSITORY/releases"
+          body="$(printf '{"tag_name":"%s","name":"%s","draft":false,"prerelease":false}' "$GITHUB_REF_NAME" "$GITHUB_REF_NAME")"
+
+          # POST pour créer la release, code HTTP capturé à part. Si le tag est
+          # déjà connu de Forgejo (tag poussé à la main avant ce workflow, ou
+          # ré-exécution du job), l'API répond 409 : on réutilise alors la
+          # release existante au lieu d'échouer — idempotence, cf. l'incident
+          # du tag v0.2.2 poussé en avance qui a fait tomber ce job sur un 409.
+          code="$(curl -sS -o /tmp/release.json -w '%{http_code}' -X POST "$api" \
+            -H "Authorization: token $FORGEJO_TOKEN" \
+            -H "Content-Type: application/json" \
+            -d "$body")"
+
+          if [ "$code" = "409" ]; then
+            echo "Release $GITHUB_REF_NAME déjà existante (HTTP 409) — récupération de son id."
+            curl -fsS "$api/tags/$GITHUB_REF_NAME" \
+              -H "Authorization: token $FORGEJO_TOKEN" -o /tmp/release.json
+          elif [ "$code" -lt 200 ] || [ "$code" -ge 300 ]; then
+            echo "Échec de création de la Release (HTTP $code) : $(cat /tmp/release.json)" >&2
+            exit 1
+          fi
+
+          id="$(grep -o '"id":[0-9]*' /tmp/release.json | head -1 | cut -d: -f2)"
+          if [ -z "$id" ]; then
+            echo "Pas d'id de release trouvé : $(cat /tmp/release.json)" >&2
+            exit 1
+          fi
+          echo "Release $GITHUB_REF_NAME prête (id=$id)"
+          echo "release-id=$id" >> "$GITHUB_OUTPUT"
+
+      - name: Attache l'APK à la Release
+        env:
+          FORGEJO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          api="$GITHUB_API_URL/repos/$GITHUB_REPOSITORY/releases/${{ steps.create-release.outputs.release-id }}/assets"
+          curl -fsS -X POST "$api?name=batchcooking.apk" \
+            -H "Authorization: token $FORGEJO_TOKEN" \
+            -F "attachment=@batchcooking.apk"
 
   notify-portainer:
     runs-on: ubuntu-latest
-    needs: github-release
+    needs: forgejo-release
     steps:
       - name: Trigger Portainer redeploy
         # Best-effort: does nothing (and doesn't fail the workflow) until

.gitignore

@@ -70,6 +70,7 @@ web_modules/
 .env.*
 !.env.example
 !.env.test.example
+!.env.capacitor.example
 
 # Python virtualenvs/caches for services/tech-step-intent-service (this repo
 # is otherwise all-Node — see that service's own .gitignore for the rest;
@@ -133,6 +134,11 @@ dist
 # Stores VSCode versions used for testing VSCode extensions
 .vscode-test
 
+# JetBrains IDEs (Android Studio opens this repo as a project once the
+# Capacitor Android app exists under apps/web/android — see that folder's own
+# .gitignore for the generated native project's build artefacts).
+/.idea/
+
 # pnpm
 .pnpm-store
 
@@ -163,3 +169,6 @@ tmp-mockups/
 apps/web/cypress/screenshots/
 apps/web/cypress/videos/
 apps/web/cypress/downloads/
+apps/admin-web/cypress/screenshots/
+apps/admin-web/cypress/videos/
+apps/admin-web/cypress/downloads/

README.md

@@ -207,10 +207,18 @@ depuis la même origine. Les deux autres services du fichier
 (`tech-step-intent-service`, `tech-step-llm-worker`) n'exposent eux aucun port
 au host — voir leurs propres README pour leur rôle.
 
-**Pas de registre d'image** dans cette configuration : l'instance **Portainer** de
+**Registre d'image** : la CI de release (voir plus bas) construit et pousse les
-production est reliée directement au dépôt Git et reconstruit elle-même
+trois images de service — `batchcooking-app`, `batchcooking-intent-service`,
-`docker-compose.yml`/`apps/api/Dockerfile` à chaque déploiement — la CI ne pousse
+`batchcooking-llm-worker` — sur le **registre de conteneurs intégré à Forgejo**
-donc aucune image nulle part.
+(`git.dev.kyuno.fr/kyuno/…`), taguées à la fois avec le tag de release (`vX.Y.Z`)
+et `latest`. `docker-compose.yml` référence ces images via `IMAGE_TAG` (variable
+d'environnement, défaut `latest` — voir `.env.example`), tout en gardant un bloc
+`build:` local à côté de chaque `image:` : `docker compose pull` récupère les
+images pré-construites, `docker compose up`/`build` retombe sur un build local si
+elles sont absentes. L'instance **Portainer** de production peut donc désormais
+tirer les images pré-construites (stack en mode *pull*, `IMAGE_TAG` pinné sur la
+release voulue) **ou** continuer à builder elle-même depuis le dépôt Git — les
+deux modes fonctionnent avec le même `docker-compose.yml`.
 
 ### Release (`.github/workflows/release.yml`)
 
@@ -221,14 +229,80 @@ git tag vX.Y.Z
 git push --tags
 ```
 
-Le pipeline enchaîne trois jobs : `sanity-build` (build de l'image Docker sans
+Le pipeline enchaîne quatre jobs : `build-and-push-images` (build des 3 images à
-push, juste pour vérifier qu'elle build encore à ce tag avant de laisser Portainer
+ce tag + push sur le registre Forgejo sous `vX.Y.Z` et `latest` — un push
-redéployer dessus), `github-release` (crée une Release GitHub avec changelog
+réussi vaut aussi vérification que tout build encore à ce commit),
-auto-généré à partir des PRs mergées), puis `notify-portainer` — envoie une requête
+`build-android-apk` (APK signé, `versionName` dérivé du tag), `forgejo-release`
-au webhook de redeploy de Portainer si le secret de dépôt `PORTAINER_WEBHOOK_URL`
+(crée la Release Forgejo `vX.Y.Z` et y attache `batchcooking.apk`), puis
-est configuré (sinon Portainer se resynchronise simplement à son prochain
+`notify-portainer` — envoie une requête au webhook de redeploy de Portainer si
-polling Git). Pour l'activer : récupérer l'URL du webhook depuis les réglages du
+le secret de dépôt `PORTAINER_WEBHOOK_URL` est configuré (sinon Portainer se
-stack Portainer, puis l'ajouter comme secret GitHub `PORTAINER_WEBHOOK_URL`.
+resynchronise à son prochain polling). Pour l'activer : récupérer l'URL du
+webhook depuis les réglages du stack Portainer, puis l'ajouter comme secret de
+dépôt `PORTAINER_WEBHOOK_URL`.
+
+## Application mobile (Android)
+
+`apps/web` est empaqueté dans une coquille [Capacitor](https://capacitorjs.com/)
+pour Android — le projet natif est versionné dans `apps/web/android/` (issue
+\#39). L'authentification passe par un jeton Bearer stocké dans le stockage
+sécurisé de Capacitor (le cookie de session `SameSite=Lax` ne part pas depuis
+l'origine interne d'une WebView), et `main.tsx` bascule sur `HashRouter` quand
+`Capacitor.isNativePlatform()` est vrai.
+
+**Prérequis** : Android Studio (SDK Android + un JDK ; le JBR fourni avec
+Android Studio suffit). Aucun serveur Postgres/Docker local n'est nécessaire —
+l'appli parle à l'API HTTPS publique.
+
+**Build** — depuis `apps/web/` :
+
+```bash
+# 1. URL publique de l'API, gravée dans le bundle empaqueté (le build web
+#    normal utilise une URL relative « même origine », impossible ici).
+cp .env.capacitor.example .env.capacitor   # puis renseigner VITE_API_URL
+
+# 2. Build web en mode capacitor + synchronisation dans le projet natif.
+pnpm build:capacitor
+npx cap sync android
+
+# 3. Ouvrir dans Android Studio (build/run/émulateur depuis l'IDE)…
+npx cap open android
+# …ou build/run en ligne de commande si un appareil/émulateur est prêt :
+npx cap run android
+```
+
+Le bundle web copié (`apps/web/android/app/src/main/assets/public/`) est
+git-ignoré : il est régénéré par `pnpm build:capacitor && npx cap sync android`.
+Les icônes et le splash sont générés depuis `apps/web/assets/logo.svg` (voir
+`apps/web/assets/README.md`). iOS est hors périmètre pour l'instant (nécessite
+Xcode/macOS).
+
+**CI — build automatique d'un APK signé** (`.github/workflows/ci.yml`, job
+`build-android`, issue #64) : à chaque push sur `main`, une fois les 5 autres
+jobs verts, un APK release signé est construit et déposé comme artefact de
+run téléchargeable. Secrets du dépôt Forgejo requis (Réglages du dépôt →
+Secrets) :
+
+| Secret | Contenu |
+|---|---|
+| `MOBILE_API_URL` | URL HTTPS publique de l'API — même valeur que `VITE_API_URL` dans `.env.capacitor` |
+| `ANDROID_KEYSTORE_BASE64` | Le keystore de release (`.jks`) encodé en base64 |
+| `ANDROID_KEYSTORE_PASSWORD` | Mot de passe du keystore |
+| `ANDROID_KEY_ALIAS` | Alias de la clé dans le keystore |
+| `ANDROID_KEY_PASSWORD` | Mot de passe de la clé |
+
+Le keystore doit être généré **une seule fois**, à la main, et rester stable
+pour toujours : Android refuse d'installer la mise à jour d'une appli signée
+par une clé différente de celle déjà installée.
+
+```bash
+keytool -genkeypair -v -keystore batchcooking-release.jks \
+  -alias batchcooking -keyalg RSA -keysize 2048 -validity 10000
+base64 -w0 batchcooking-release.jks   # → coller comme secret ANDROID_KEYSTORE_BASE64
+```
+
+Conserver le fichier `.jks` et ses mots de passe en lieu sûr en dehors du
+dépôt (jamais commité — voir `apps/web/android/.gitignore`) : le perdre
+empêche de publier toute future mise à jour de l'appli.
 
 ## Auth (apps/api)
 

apps/admin-web/.env.example

@@ -1,6 +0,0 @@
-# Vite only exposes vars prefixed with VITE_ to client code.
-# Base URL of the API's /admin/* surface. Empty string = same origin as the
-# page (correct behind a shared reverse proxy). Native dev overrides it in
-# apps/admin-web/.env since the Vite dev server (5174) and the API (3000)
-# are different origins.
-VITE_ADMIN_API_URL=http://localhost:3000

apps/admin-web/Dockerfile

@@ -1,25 +0,0 @@
-# Its own image (not built into apps/api's) — the admin app is deployed
-# independently of the main app. Build stage compiles the Vite bundle from
-# the monorepo; runtime is a plain static nginx serving that bundle.
-#
-# Build context is the repo root (like apps/api/Dockerfile) — the workspace
-# packages (@batch-cooking/shared, @batch-cooking/date-tools) must resolve.
-FROM node:22-slim AS build
-RUN corepack enable
-WORKDIR /repo
-# Skip Cypress's Electron binary download — this image never runs it.
-ENV CYPRESS_INSTALL_BINARY=0
-COPY . .
-RUN pnpm install --frozen-lockfile
-# The admin bundle bakes in VITE_ADMIN_API_URL at build time. Default ""
-# (same-origin — correct behind a shared reverse proxy); override with
-# `--build-arg VITE_ADMIN_API_URL=https://api.example.com` when the admin
-# app is served from a different origin than the API.
-ARG VITE_ADMIN_API_URL=""
-ENV VITE_ADMIN_API_URL=$VITE_ADMIN_API_URL
-RUN pnpm --filter admin-web build
-
-FROM nginx:alpine AS runtime
-COPY apps/admin-web/nginx.conf /etc/nginx/conf.d/default.conf
-COPY --from=build /repo/apps/admin-web/dist /usr/share/nginx/html
-EXPOSE 80

apps/admin-web/cypress.config.ts

@@ -1,28 +0,0 @@
-import { addCucumberPreprocessorPlugin } from "@badeball/cypress-cucumber-preprocessor";
-import { createEsbuildPlugin } from "@badeball/cypress-cucumber-preprocessor/esbuild";
-import createBundler from "@bahmutov/cypress-esbuild-preprocessor";
-import { defineConfig } from "cypress";
-
-// Disable GPU for headless/sandboxed environments where no GPU device is
-// available — same helper as apps/web's cypress.config.ts.
-function disableGpu(on: Cypress.PluginEvents) {
-  on("before:browser:launch", (browser, launchOptions) => {
-    if (browser.family === "chromium") {
-      launchOptions.args.push("--disable-gpu", "--no-sandbox");
-    }
-    return launchOptions;
-  });
-}
-
-export default defineConfig({
-  e2e: {
-    baseUrl: "http://localhost:5174",
-    specPattern: ["cypress/e2e/**/*.cy.ts", "cypress/e2e/**/*.feature"],
-    async setupNodeEvents(on, config) {
-      disableGpu(on);
-      await addCucumberPreprocessorPlugin(on, config);
-      on("file:preprocessor", createBundler({ plugins: [createEsbuildPlugin(config)] }));
-      return config;
-    },
-  },
-});

apps/admin-web/cypress/e2e/login.ts

@@ -1,24 +0,0 @@
-import { Given } from "@badeball/cypress-cucumber-preprocessor";
-
-const adminBody = {
-  id: 1,
-  email: "ops@example.com",
-  name: "Ops",
-  createdAt: "2026-08-01T00:00:00.000Z",
-  lastLoginAt: "2026-08-28T09:00:00.000Z",
-};
-
-Given("admin login fails with invalid credentials", () => {
-  cy.intercept("POST", "**/admin/auth/login", {
-    statusCode: 401,
-    body: { code: 4010, message: "Invalid email or password" },
-  });
-});
-
-Given("admin login succeeds as {string}", (name: string) => {
-  const body = { ...adminBody, name, email: `${name.toLowerCase()}@example.com` };
-  cy.intercept("POST", "**/admin/auth/login", { statusCode: 200, body });
-  // After navigate("/"), RequireAdmin re-checks the session — from now on it
-  // must report authenticated (last matching intercept wins).
-  cy.intercept("GET", "**/admin/auth/me", { statusCode: 200, body });
-});

apps/admin-web/cypress/support/e2e.ts

@@ -1,3 +0,0 @@
-// Cypress support file — global config and custom commands go here as the
-// admin app grows. Same minimal starting point as apps/web's e2e.ts.
-export {};

apps/admin-web/cypress/support/step_definitions/common.steps.ts

@@ -1,54 +0,0 @@
-import { Given, Then, When } from "@badeball/cypress-cucumber-preprocessor";
-
-// Steps shared across admin feature specs — navigation and generic UI
-// assertions. Anything specific to one feature (its own API mocks, its own
-// DOM structure) lives in that feature's own `<name>.ts` step file.
-//
-// Every admin API call is mocked via `cy.intercept` — the Cypress suite
-// never runs a live backend; apps/api's own Mocha suite covers real
-// `/admin/*` behaviour.
-
-Given("the admin session check returns unauthenticated", () => {
-  cy.intercept("GET", "**/admin/auth/me", { statusCode: 401, body: { code: 4011, message: "no" } });
-});
-
-Given("I am signed in as admin {string}", (name: string) => {
-  cy.intercept("GET", "**/admin/auth/me", {
-    statusCode: 200,
-    body: {
-      id: 1,
-      email: `${name.toLowerCase()}@example.com`,
-      name,
-      createdAt: "2026-08-01T00:00:00.000Z",
-      lastLoginAt: "2026-08-28T09:00:00.000Z",
-    },
-  });
-});
-
-When("I visit {string}", (path: string) => {
-  cy.visit(path);
-});
-
-When("I fill in the {string} field with {string}", (fieldId: string, value: string) => {
-  cy.get(`#${fieldId}`).clear().type(value);
-});
-
-When("I click the button {string}", (text: string) => {
-  cy.contains("button", text).click();
-});
-
-Then("the URL should include {string}", (fragment: string) => {
-  cy.url().should("include", fragment);
-});
-
-Then("the URL should not include {string}", (fragment: string) => {
-  cy.url().should("not.include", fragment);
-});
-
-Then("I should see {string}", (text: string) => {
-  cy.contains(text).should("be.visible");
-});
-
-Then("I should see the heading {string}", (text: string) => {
-  cy.contains("h1", text).should("be.visible");
-});

apps/admin-web/index.html

@@ -1,12 +0,0 @@
-<!doctype html>
-<html lang="fr">
-  <head>
-    <meta charset="UTF-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>batchCooking — Admin</title>
-  </head>
-  <body>
-    <div id="root"></div>
-    <script type="module" src="/src/main.tsx"></script>
-  </body>
-</html>

apps/admin-web/nginx.conf

@@ -1,20 +0,0 @@
-# Static host for the built admin SPA. Client-side routing (react-router)
-# means any unknown path must fall back to index.html rather than 404 —
-# same reason apps/api serves its own SPA that way.
-server {
-    listen 80;
-    server_name _;
-    root /usr/share/nginx/html;
-    index index.html;
-
-    location / {
-        try_files $uri $uri/ /index.html;
-    }
-
-    # Long-cache the fingerprinted assets Vite emits; never cache the HTML
-    # entry point so a new deploy is picked up immediately.
-    location /assets/ {
-        expires 1y;
-        add_header Cache-Control "public, immutable";
-    }
-}

apps/admin-web/package.json

@@ -1,42 +0,0 @@
-{
-  "name": "admin-web",
-  "version": "0.1.0",
-  "private": true,
-  "type": "module",
-  "scripts": {
-    "dev": "vite --host 0.0.0.0 --port 5174",
-    "build": "tsc -b && vite build",
-    "preview": "vite preview --port 5174",
-    "test": "echo \"no unit tests yet\" && exit 0",
-    "cy:open": "cypress open",
-    "cy:run": "cypress run",
-    "e2e": "start-server-and-test dev http://localhost:5174 cy:run"
-  },
-  "dependencies": {
-    "@batch-cooking/date-tools": "workspace:*",
-    "@batch-cooking/shared": "workspace:*",
-    "i18next": "^26.3.6",
-    "lucide-react": "^1.32.0",
-    "react": "^18.3.1",
-    "react-dom": "^18.3.1",
-    "react-i18next": "^17.0.11",
-    "react-router-dom": "^7.18.2",
-    "recharts": "^2.15.0",
-    "zod": "^3.25.76"
-  },
-  "devDependencies": {
-    "@badeball/cypress-cucumber-preprocessor": "22.2.0",
-    "@bahmutov/cypress-esbuild-preprocessor": "2.2.8",
-    "@cypress/vite-dev-server": "5.2.1",
-    "@types/node": "^22.9.0",
-    "@types/react": "^18.3.12",
-    "@types/react-dom": "^18.3.1",
-    "@vitejs/plugin-react": "^4.3.3",
-    "cypress": "13.17.0",
-    "esbuild": "0.21.5",
-    "sass": "^1.102.0",
-    "start-server-and-test": "^2.0.8",
-    "typescript": "^5.7.2",
-    "vite": "^5.4.11"
-  }
-}

apps/admin-web/src/App.tsx

@@ -1,34 +0,0 @@
-import { Navigate, Route, Routes } from "react-router-dom";
-import { RequireAdmin } from "./features/auth/RequireAdmin";
-import { AdminLayout } from "./layouts/AdminLayout";
-import { CorrectionsPage } from "./pages/corrections/CorrectionsPage";
-import { DashboardPage } from "./pages/dashboard/DashboardPage";
-import { LoginPage } from "./pages/login/LoginPage";
-import { MonitoringPage } from "./pages/monitoring/MonitoringPage";
-
-/**
- * Admin app route table. `/login` is the only unauthenticated route;
- * everything else is nested under one `RequireAdmin` + `AdminLayout` parent
- * (the guard + sidebar chrome applied once), same shape as apps/web's
- * `App.tsx`. Unknown paths fall back to `/`, which redirects to `/login`
- * when there's no admin session.
- */
-export function App() {
-  return (
-    <Routes>
-      <Route path="/login" element={<LoginPage />} />
-      <Route
-        element={
-          <RequireAdmin>
-            <AdminLayout />
-          </RequireAdmin>
-        }
-      >
-        <Route path="/" element={<DashboardPage />} />
-        <Route path="/monitoring" element={<MonitoringPage />} />
-        <Route path="/corrections" element={<CorrectionsPage />} />
-      </Route>
-      <Route path="*" element={<Navigate to="/" replace />} />
-    </Routes>
-  );
-}

apps/admin-web/src/api/client.ts

@@ -1,96 +0,0 @@
-import {
-  type AdminLoginInput,
-  type AdminUserView,
-  type ApiErrorResponse,
-  ErrorCode,
-} from "@batch-cooking/shared";
-
-/**
- * Base URL of the admin API surface, configurable via `VITE_ADMIN_API_URL`
- * (see `.env.example`). Defaults to `""` (same origin) — correct behind a
- * shared reverse proxy; native dev overrides it to `http://localhost:3000`
- * in `apps/admin-web/.env` since the Vite dev server (5174) and the API
- * (3000) are different origins.
- */
-const ADMIN_API_BASE_URL: string = import.meta.env.VITE_ADMIN_API_URL ?? "";
-
-/**
- * Thrown by {@link AdminApiClient} on any non-2xx response — carries the
- * same {@link ErrorCode} the API returned. Same shape as apps/web's
- * `ApiError`; kept separate rather than shared so the two apps' transport
- * layers stay independent.
- */
-export class ApiError extends Error {
-  public readonly status: number;
-  public readonly code: ErrorCode;
-  public readonly fieldErrors?: Record<string, string[] | undefined>;
-
-  public constructor(status: number, body: ApiErrorResponse) {
-    super(body.message);
-    this.name = "ApiError";
-    this.status = status;
-    this.code = body.code;
-    this.fieldErrors = body.details;
-  }
-}
-
-/**
- * Thin fetch wrapper around the `/admin/*` endpoints — same design as
- * apps/web's `ApiClient` (a class for cohesion/extensibility, one shared
- * stateless instance). Every request sends credentials so the
- * `admin_session` httpOnly cookie round-trips.
- */
-export class AdminApiClient {
-  /**
-   * Performs a JSON request against the admin API and returns the parsed body.
-   *
-   * @throws {ApiError} if the response status is not in the 2xx range.
-   */
-  private async _request<TResponseBody>(
-    path: string,
-    options: RequestInit = {},
-  ): Promise<TResponseBody> {
-    try {
-      const response = await fetch(`${ADMIN_API_BASE_URL}${path}`, {
-        ...options,
-        credentials: "include",
-        headers: { "Content-Type": "application/json", ...options.headers },
-      });
-
-      if (!response.ok) {
-        const body = (await response.json().catch(() => null)) as ApiErrorResponse | null;
-        throw new ApiError(
-          response.status,
-          body ?? { code: ErrorCode.INTERNAL_ERROR, message: "Something went wrong" },
-        );
-      }
-
-      if (response.status === 204) {
-        return undefined as TResponseBody;
-      }
-      return (await response.json()) as TResponseBody;
-    } catch (err) {
-      // Rethrown as-is — callers surface it their own way; this is just the
-      // one place the fetch/`await` sits in a try/catch per the repo's rule.
-      throw err;
-    }
-  }
-
-  /** Verifies admin credentials and starts an admin session. */
-  public login(input: AdminLoginInput): Promise<AdminUserView> {
-    return this._request("/admin/auth/login", { method: "POST", body: JSON.stringify(input) });
-  }
-
-  /** Ends the current admin session. */
-  public logout(): Promise<void> {
-    return this._request("/admin/auth/logout", { method: "POST" });
-  }
-
-  /** Fetches the currently authenticated admin — rejects with `NOT_AUTHENTICATED` if there's no session. */
-  public me(): Promise<AdminUserView> {
-    return this._request("/admin/auth/me");
-  }
-}
-
-/** Single shared instance — stateless, same reasoning as apps/web's `apiClient`. */
-export const adminApiClient = new AdminApiClient();

apps/admin-web/src/i18n/i18n.ts

@@ -1,22 +0,0 @@
-import i18next from "i18next";
-import { initReactI18next } from "react-i18next";
-import fr from "../locales/fr/translation.json";
-
-/**
- * i18next instance for the admin app, imported once for its side effect
- * (`main.tsx`) before anything renders. Only French exists today — same
- * setup as apps/web's `i18n/i18n.ts`, its own separate locale file so the
- * two apps' copy never has to be kept identical. `packages/shared`'s
- * `ErrorCode` member names double as keys under the `errors` namespace
- * (see `services/error-message.service.ts`).
- */
-void i18next.use(initReactI18next).init({
-  resources: {
-    fr: { translation: fr },
-  },
-  lng: "fr",
-  fallbackLng: "fr",
-  interpolation: { escapeValue: false },
-});
-
-export default i18next;

apps/admin-web/src/lib/zod-errors.ts

@@ -1,18 +0,0 @@
-import type { ZodError } from "zod";
-
-/**
- * Flattens a zod validation error into `{ fieldName: firstMessage }` for
- * inline display under each form field — verbatim copy of apps/web's
- * `lib/zod-errors.ts` (only the first message per field, enough for the
- * single-rule-per-field schemas used here).
- */
-export function fieldErrorsFrom(error: ZodError): Record<string, string> {
-  const fieldErrors = error.flatten().fieldErrors;
-  const firstMessagePerField: Record<string, string> = {};
-  for (const [field, messages] of Object.entries(fieldErrors)) {
-    if (messages?.[0]) {
-      firstMessagePerField[field] = messages[0];
-    }
-  }
-  return firstMessagePerField;
-}

apps/admin-web/src/locales/fr/translation.json

@@ -1,42 +0,0 @@
-{
-  "errors": {
-    "VALIDATION_ERROR": "Erreur de validation",
-    "INVALID_CREDENTIALS": "Email ou mot de passe incorrect",
-    "NOT_AUTHENTICATED": "Vous devez être connecté",
-    "NOT_FOUND": "Ressource introuvable",
-    "TECH_STEP_NOT_FOUND": "Cette technique n'existe pas",
-    "INTERNAL_ERROR": "Une erreur est survenue, réessayez plus tard"
-  },
-  "admin": {
-    "common": {
-      "comingSoon": "Section à venir."
-    },
-    "login": {
-      "title": "Administration",
-      "emailLabel": "Email",
-      "passwordLabel": "Mot de passe",
-      "submit": "Se connecter",
-      "submitting": "Connexion…"
-    },
-    "nav": {
-      "dashboard": "Tableau de bord",
-      "monitoring": "Monitoring",
-      "corrections": "Corrections"
-    },
-    "layout": {
-      "logout": "Se déconnecter"
-    },
-    "dashboard": {
-      "title": "Tableau de bord",
-      "lead": "Métriques d'utilisation de l'application."
-    },
-    "monitoring": {
-      "title": "Monitoring",
-      "lead": "Santé des microservices et de la base de données."
-    },
-    "corrections": {
-      "title": "Corrections",
-      "lead": "Tri des corrections utilisateur pour le ré-entraînement NLP."
-    }
-  }
-}

apps/admin-web/src/main.tsx

@@ -1,24 +0,0 @@
-import { StrictMode } from "react";
-import { createRoot } from "react-dom/client";
-import { BrowserRouter } from "react-router-dom";
-import { App } from "./App";
-import { AdminAuthProvider } from "./features/auth/AdminAuthContext";
-// Side-effect import: initializes i18next before anything renders.
-import "./i18n/i18n";
-// Global stylesheet (theme tokens + minimal reset) — the only non-colocated .scss import.
-import "./styles/global.scss";
-
-const rootElement = document.getElementById("root");
-if (!rootElement) {
-  throw new Error("Root element not found");
-}
-
-createRoot(rootElement).render(
-  <StrictMode>
-    <BrowserRouter>
-      <AdminAuthProvider>
-        <App />
-      </AdminAuthProvider>
-    </BrowserRouter>
-  </StrictMode>,
-);

apps/admin-web/src/pages/corrections/CorrectionsPage.tsx

@@ -1,19 +0,0 @@
-import { useTranslation } from "react-i18next";
-import "../admin-page.scss";
-
-/**
- * Tech-step correction triage — review `TechStepTrainingSuggestion` /
- * `StepTechStepCorrection`, mark applied/rejected, generate the
- * `training_data.py` snippet, and trigger the F1 gate + backfill. Placeholder
- * until PR 5 (correction triage + retrain).
- */
-export function CorrectionsPage() {
-  const { t } = useTranslation();
-  return (
-    <div className="admin-page">
-      <h1 className="admin-page__title">{t("admin.corrections.title")}</h1>
-      <p className="admin-page__lead">{t("admin.corrections.lead")}</p>
-      <p className="admin-page__placeholder">{t("admin.common.comingSoon")}</p>
-    </div>
-  );
-}

apps/admin-web/src/pages/dashboard/DashboardPage.tsx

@@ -1,17 +0,0 @@
-import { useTranslation } from "react-i18next";
-import "../admin-page.scss";
-
-/**
- * Usage-metrics dashboard — KPI tiles + trend charts fed by
- * `GET /admin/metrics`. Placeholder until PR 3 (metrics) fills it in.
- */
-export function DashboardPage() {
-  const { t } = useTranslation();
-  return (
-    <div className="admin-page">
-      <h1 className="admin-page__title">{t("admin.dashboard.title")}</h1>
-      <p className="admin-page__lead">{t("admin.dashboard.lead")}</p>
-      <p className="admin-page__placeholder">{t("admin.common.comingSoon")}</p>
-    </div>
-  );
-}

apps/admin-web/src/pages/monitoring/MonitoringPage.tsx

@@ -1,18 +0,0 @@
-import { useTranslation } from "react-i18next";
-import "../admin-page.scss";
-
-/**
- * Microservice health board — active probes of Postgres, the API, the
- * intent-service and the LLM worker's heartbeat, fed by
- * `GET /admin/monitoring`. Placeholder until PR 4 (monitoring).
- */
-export function MonitoringPage() {
-  const { t } = useTranslation();
-  return (
-    <div className="admin-page">
-      <h1 className="admin-page__title">{t("admin.monitoring.title")}</h1>
-      <p className="admin-page__lead">{t("admin.monitoring.lead")}</p>
-      <p className="admin-page__placeholder">{t("admin.common.comingSoon")}</p>
-    </div>
-  );
-}

apps/admin-web/src/services/error-message.service.ts

@@ -1,19 +0,0 @@
-import { ErrorCode } from "@batch-cooking/shared";
-import i18n from "../i18n/i18n";
-
-/**
- * Localized label for an {@link ErrorCode} returned by the admin API —
- * verbatim behaviour of apps/web's `ErrorMessageService`: reverse-maps the
- * numeric enum value to its member name (`4010` → `"INVALID_CREDENTIALS"`)
- * and looks it up under the `errors` namespace, falling back to
- * `INTERNAL_ERROR` for a code this client doesn't recognise.
- */
-export class ErrorMessageService {
-  public getLabel(code: ErrorCode): string {
-    const memberName = ErrorCode[code] ?? ErrorCode[ErrorCode.INTERNAL_ERROR];
-    return i18n.t(`errors.${memberName}`);
-  }
-}
-
-/** Single shared instance — stateless. */
-export const errorMessageService = new ErrorMessageService();

apps/admin-web/src/styles/_theme.scss

@@ -1,171 +0,0 @@
-// NOTE: verbatim copy of apps/web/src/styles/_theme.scss. Extracting these
-// tokens into a shared package (consumed by both apps) is tracked separately
-// — keep the two files in sync by hand until then.
-// =============================================================================
-// Design tokens — the single source of truth for colors, spacing, typography
-// and other reusable values across the whole app.
-//
-// Exposed as CSS custom properties on :root (not plain SCSS variables) so
-// they're available at *runtime*, not just compile time — this is what lets
-// dark mode work below by simply redefining these variables instead of
-// rebuilding the stylesheet. Every other .scss file should reference
-// `var(--token-name)`, never a hardcoded color/size.
-//
-// Palette name: "Mise en Place" — a kitchen-operations identity (batch
-// cooking as logistics: everything labeled and in its place before you
-// start) rather than a food-blog one. See the design proposal for the full
-// rationale: https://claude.ai/code/artifact/1db63af0-cfd1-4f77-9369-71ca6accd06f
-//
-// Import this partial once, globally (see global.scss) — never re-import it
-// from a component-level .scss file, `:root` only needs to be declared once.
-// =============================================================================
-
-:root {
-  // --- Surfaces & ink ---------------------------------------------------
-  // Neutral surface: page background ("porcelaine") vs. the card surface
-  // content sits on, plus a recessed variant for panels/table headers.
-  --color-background: #eef2ed;
-  --color-surface: #ffffff;
-  --color-surface-alt: #e2e8e0;
-  // Text.
-  --color-text: #1f2a22;
-  --color-text-muted: #57685a;
-  --color-border: #c7d0c4;
-
-  // --- Brand accents, each with one job --------------------------------
-  // Basil — primary actions, links, brand presence.
-  --color-primary: #2e6b4a;
-  --color-primary-hover: #244f38;
-  // Vermillion — secondary accent for urgency/strong calls to action
-  // (e.g. a timer, "start session"). Never reused for allergen alerts
-  // below — those need their own, unambiguous color.
-  --color-accent: #cc4b26;
-  --color-accent-hover: #a83c1c;
-  // Turmeric — category/classification tags.
-  --color-tag: #c98a1b;
-  --color-tag-ink: #3a2c05; // pairs with a solid --color-tag fill only.
-
-  // --- Feedback -----------------------------------------------------------
-  --color-success: #2e6b4a;
-  --color-warning: #c98a1b;
-  --color-error: #b3271e;
-
-  // --- Allergens / intolerances --------------------------------------------
-  // A 3-tier food-safety scale, kept distinct from --color-error so an
-  // allergen warning is never confused with a form validation error:
-  //   - critical (declared allergen): its own color, solid/inverted fill
-  //   - moderate (intolerance): reuses --color-warning, tinted fill
-  //   - trace ("may contain traces of…"): neutral, dashed outline
-  // The severity is carried by the FILL TREATMENT, not the hue alone, so
-  // it stays legible for color-blind users. See the design proposal's
-  // "Alertes & allergènes" section for the full component set.
-  --color-allergen: #a8123f;
-  --color-allergen-ink: #ffe9ef; // pairs with a solid --color-allergen fill only.
-
-  // --- Spacing scale ---------------------------------------------------------
-  // Multiples of a 4px base unit — use these instead of ad hoc px values so
-  // spacing stays visually consistent as the app grows.
-  --space-xs: 0.25rem; // 4px
-  --space-sm: 0.5rem; // 8px
-  --space-md: 1rem; // 16px
-  --space-lg: 1.5rem; // 24px
-  --space-xl: 2rem; // 32px
-  --space-2xl: 3rem; // 48px — inter-section spacing
-
-  // --- Typography --------------------------------------------------------
-  // System font stacks only — no remote webfont, so there's zero loading
-  // latency and no flash of unstyled text, which fits an app meant to be
-  // used quickly under time pressure. Three roles: a condensed "label"
-  // face for headings/eyebrows, a humanist face for body copy, and a
-  // monospace for anything that lines up in columns (times, quantities).
-  --font-display: "Bahnschrift", "Arial Narrow", "Segoe UI", sans-serif;
-  --font-body: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
-  --font-mono: "Cascadia Mono", Consolas, "SF Mono", "Liberation Mono", monospace;
-
-  --font-size-xs: 0.75rem; // 12px — captions, meta
-  --font-size-sm: 0.875rem; // 14px — labels, secondary text
-  --font-size-base: 1rem; // 16px — body
-  --font-size-md: 1.125rem; // 18px — lead paragraph
-  --font-size-lg: 1.375rem; // 22px — H3 / card titles
-  --font-size-xl: 1.75rem; // 28px — H2 / section titles
-  --font-size-2xl: 2.25rem; // 36px — H1 / page titles
-  --font-size-3xl: 3rem; // 48px — display, exceptional use only
-
-  // --- Shape / elevation --------------------------------------------------
-  --radius-base: 4px; // controls (inputs, buttons) — deliberately flat
-  --radius-md: 10px; // cards
-  --radius-lg: 18px; // panels, modals
-  --radius-pill: 999px; // tags, badges
-  --max-width-form: 22rem;
-
-  --shadow-sm: 0 1px 2px rgba(31, 42, 34, 0.08), 0 1px 1px rgba(31, 42, 34, 0.06);
-  --shadow-md: 0 6px 16px rgba(31, 42, 34, 0.12), 0 2px 6px rgba(31, 42, 34, 0.08);
-}
-
-// Lets the browser pick sensible default colors (form controls, scrollbars)
-// for whichever mode the user ends up in.
-:root {
-  color-scheme: light dark;
-}
-
-// --- Dark mode ---------------------------------------------------------
-// Follows the OS/browser preference by default. Guarded with
-// `:root:not([data-theme="light"])` so an explicit "light" choice (see
-// apps/web's `ThemeContext`, `SYSTEM` = no `data-theme` attribute at all —
-// this block then decides) can override a dark OS setting.
-@media (prefers-color-scheme: dark) {
-  :root:not([data-theme="light"]) {
-    --color-background: #14181a;
-    --color-surface: #1c221e;
-    --color-surface-alt: #262e27;
-    --color-text: #edf1ea;
-    --color-text-muted: #a9b5a6;
-    --color-border: #384038;
-
-    --color-primary: #5fae7e;
-    --color-primary-hover: #7cc496;
-    --color-accent: #ea7a48;
-    --color-accent-hover: #f0946c;
-    --color-tag: #e8b84b;
-    --color-tag-ink: #2a2005;
-
-    --color-success: #5fae7e;
-    --color-warning: #e8b84b;
-    --color-error: #e5675a;
-
-    --color-allergen: #e2547b;
-    --color-allergen-ink: #3a0416;
-
-    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
-    --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.45);
-  }
-}
-
-// Mirrors the block above for an explicit "dark" choice (`ThemeContext`
-// sets `data-theme="dark"` on `<html>`), so it wins over the OS setting in
-// both directions.
-:root[data-theme="dark"] {
-  --color-background: #14181a;
-  --color-surface: #1c221e;
-  --color-surface-alt: #262e27;
-  --color-text: #edf1ea;
-  --color-text-muted: #a9b5a6;
-  --color-border: #384038;
-
-  --color-primary: #5fae7e;
-  --color-primary-hover: #7cc496;
-  --color-accent: #ea7a48;
-  --color-accent-hover: #f0946c;
-  --color-tag: #e8b84b;
-  --color-tag-ink: #2a2005;
-
-  --color-success: #5fae7e;
-  --color-warning: #e8b84b;
-  --color-error: #e5675a;
-
-  --color-allergen: #e2547b;
-  --color-allergen-ink: #3a0416;
-
-  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
-  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.45);
-}

apps/admin-web/src/styles/global.scss

@@ -1,149 +0,0 @@
-// =============================================================================
-// Global stylesheet — imported exactly once, in main.tsx. Contains only
-// truly app-wide rules: the theme tokens and a minimal reset/base styling
-// that every page inherits. Anything specific to one component or page
-// belongs in a .scss file colocated next to that component/page instead.
-// =============================================================================
-
-@use "./theme";
-
-// Include borders/padding in an element's declared width/height everywhere,
-// rather than the browser default of adding them on top.
-*,
-*::before,
-*::after {
-  box-sizing: border-box;
-}
-
-// Minimal reset: remove the default body margin so pages can control their
-// own layout without fighting the browser's default 8px margin.
-body {
-  margin: 0;
-  font-family: var(--font-body);
-  font-size: var(--font-size-base);
-  line-height: 1.55;
-  color: var(--color-text);
-  background: var(--color-background);
-}
-
-// Headings use the condensed "label" face app-wide — see _theme.scss for
-// the rationale. `text-wrap: balance` avoids a lone short word wrapping
-// onto its own line in multi-line titles.
-h1,
-h2,
-h3,
-h4,
-h5,
-h6 {
-  margin: 0;
-  font-family: var(--font-display);
-  font-weight: 700;
-  text-wrap: balance;
-}
-
-// Default to the page-title size; a heading used as a smaller component
-// title (e.g. the auth card's <h1>) overrides this in its own stylesheet.
-h1 {
-  font-size: var(--font-size-2xl);
-}
-
-// A visible, consistent focus ring for keyboard navigation — the browser
-// default varies a lot between elements and browsers.
-:focus-visible {
-  outline: 2px solid var(--color-accent);
-  outline-offset: 2px;
-}
-
-// Checkbox/radio appearance, app-wide — "selectable card" style: the native
-// control itself is visually hidden (still real, focusable and
-// screen-reader-visible — see the `input[type=...]` rule below, not
-// `display: none`) and the whole label row it lives in becomes the
-// interactive surface instead: a flat bordered box that fills in with a
-// tinted background + primary border once selected, with a checkmark
-// fading in on the leading edge.
-//
-// The base (unselected) look below is detected structurally with `:has()`
-// — safe, since "does this label contain a checkbox/radio" never changes
-// after mount. The *selected* look is instead driven by the `is-selected`
-// class {@link CheckboxOption}/{@link RadioOption} (components/ui/) toggle
-// in JS from the same boolean their caller already passes to `checked` —
-// chaining a second `:has(:checked)` to react to that live state turned
-// out to be unreliable across browsers, so this only needs one
-// always-true `:has()`.
-//
-// Every checkbox/radio in the app goes through this one place (the allergy
-// grid, the theme picker, anywhere future) rather than each feature styling
-// its own — see profile-forms.scss / settings-pages.scss, which only
-// arrange these within their own layout (grid vs. stacked list) and
-// intentionally don't re-style the control/label look itself.
-label:has(> input[type="checkbox"]),
-label:has(> input[type="radio"]) {
-  position: relative;
-  display: flex;
-  align-items: center;
-  gap: var(--space-xs);
-  padding: var(--space-xs) var(--space-sm);
-  // Overrides the generic `label { font-weight: 600 }` base rule
-  // (profile-forms.scss) — without this, an *unselected* row reads just as
-  // bold as a selected one (only `.allergy-select__option` happened to set
-  // its own 400 already; `.theme-select__option` didn't, so its rows were
-  // all permanently bold until this was centralized here).
-  font-weight: 400;
-  border: 1.5px solid var(--color-border);
-  border-radius: var(--radius-base);
-  background: var(--color-surface);
-  cursor: pointer;
-  transition:
-    background-color 0.15s ease,
-    border-color 0.15s ease;
-
-  &:hover {
-    border-color: var(--color-primary);
-  }
-
-  &.is-selected {
-    border-color: var(--color-primary);
-    background: color-mix(in srgb, var(--color-primary) 12%, var(--color-surface));
-    color: var(--color-primary);
-    font-weight: 600;
-  }
-
-  &:has(:focus-visible) {
-    outline: 2px solid var(--color-accent);
-    outline-offset: 2px;
-  }
-}
-
-// The control itself is removed from the visual flow — hidden the
-// "sr-only" way (not `display: none`) so it stays focusable/tabbable and
-// announced correctly by screen readers; the label above carries the
-// entire visible selected/unchecked look.
-input[type="checkbox"],
-input[type="radio"] {
-  position: absolute;
-  width: 1px;
-  height: 1px;
-  margin: 0;
-  opacity: 0;
-}
-
-// The checkmark — a real element (see components/ui/Checkbox.tsx /
-// Radio.tsx) shown via the same `is-selected` class as the label's own
-// look above, not a separate CSS-only trigger. Scaled in from nothing so
-// toggling has a bit of motion. Same mark for both checkbox and radio: one
-// consistent "selected" language app-wide rather than a checkmark here and
-// a dot there. Sits first in the row (before the label text, per DOM
-// order) — a classic "control on the left" layout rather than trailing.
-.check-mark {
-  flex: none;
-  width: 0.9rem;
-  height: 0.9rem;
-  background: var(--color-primary);
-  clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
-  transform: scale(0);
-  transition: transform 0.1s ease;
-}
-
-.is-selected .check-mark {
-  transform: scale(1);
-}

apps/admin-web/src/vite-env.d.ts

@@ -1,5 +0,0 @@
-/// <reference types="vite/client" />
-
-// Injected by `define` in vite.config.ts, sourced from package.json's
-// version field — rendered in AdminLayout.tsx.
-declare const __APP_VERSION__: string;

apps/admin-web/tsconfig.app.json

@@ -1,14 +0,0 @@
-{
-  "extends": "../../tsconfig.base.json",
-  "compilerOptions": {
-    "module": "ESNext",
-    "moduleResolution": "Bundler",
-    "lib": ["ES2022", "DOM", "DOM.Iterable"],
-    "jsx": "react-jsx",
-    "types": ["vite/client"],
-    "noEmit": true,
-    "composite": true,
-    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo"
-  },
-  "include": ["src"]
-}

apps/admin-web/tsconfig.json

@@ -1,8 +0,0 @@
-{
-  "compilerOptions": {
-    "module": "ESNext",
-    "moduleResolution": "Bundler"
-  },
-  "files": [],
-  "references": [{ "path": "./tsconfig.app.json" }, { "path": "./tsconfig.node.json" }]
-}

apps/admin-web/tsconfig.node.json

@@ -1,12 +0,0 @@
-{
-  "compilerOptions": {
-    "target": "ES2022",
-    "module": "ESNext",
-    "moduleResolution": "Bundler",
-    "composite": true,
-    "noEmit": true,
-    "skipLibCheck": true,
-    "types": ["node"]
-  },
-  "include": ["vite.config.ts"]
-}

apps/admin-web/vite.config.ts

@@ -1,19 +0,0 @@
-import { readFileSync } from "node:fs";
-import react from "@vitejs/plugin-react";
-import { defineConfig } from "vite";
-
-// Read once at config-eval time — same trick as apps/web's vite.config.ts.
-const pkg = JSON.parse(readFileSync(new URL("./package.json", import.meta.url), "utf-8"));
-
-export default defineConfig({
-  plugins: [react()],
-  server: { port: 5174 },
-  css: {
-    preprocessorOptions: {
-      scss: { api: "modern-compiler" },
-    },
-  },
-  define: {
-    __APP_VERSION__: JSON.stringify(pkg.version),
-  },
-});

apps/api/.env.example

@@ -11,7 +11,7 @@ JWT_SECRET=changeme-generate-a-real-random-secret-at-least-32-chars
 # Optional — defaults shown (see src/config/env.ts)
 # JWT_EXPIRES_IN=7d
 # AUTH_COOKIE_NAME=session
-# CORS_ORIGIN=http://localhost:5173
+# CORS_ORIGIN=http://localhost:5173,https://localhost
 # INTENT_SERVICE_BASE_URL=http://localhost:8000
 
 # Required — services/tech-step-intent-service must be running locally (see
@@ -25,3 +25,22 @@ INTENT_SERVICE_SECRET=changeme-generate-a-real-random-secret-at-least-32-chars
 # Generate your own the same way as JWT_SECRET above; must match the
 # worker's own INTERNAL_WORKER_SECRET.
 # INTERNAL_WORKER_SECRET=changeme-generate-a-real-random-secret-at-least-32-chars
+
+# Only needed to use the admin surface (apps/web's /admin/* routes) — every
+# /admin/* request 401s while unset (`requireAdmin` fails closed). MUST be a
+# different value than JWT_SECRET. Generate your own the same way.
+# ADMIN_JWT_SECRET=changeme-a-different-random-secret-at-least-32-chars
+# Read only by `src/scripts/create-admin.ts` when its --email/--password/
+# --name flags are omitted — never by the running server.
+# ADMIN_INITIAL_EMAIL=ops@example.com
+# ADMIN_INITIAL_PASSWORD=changeme-at-least-8-chars
+# ADMIN_INITIAL_NAME=Ops
+
+# Only needed to create a Forgejo issue from a contact message
+# (apps/web's /admin/messages, issue #81). The button is hidden and the
+# endpoint answers 503 while any of the three is unset. FORGEJO_TOKEN is a
+# personal access token with the write:issue scope — generate it in Forgejo,
+# never commit the real value.
+# FORGEJO_BASE_URL=https://git.example.com
+# FORGEJO_TOKEN=changeme-a-forgejo-personal-access-token
+# FORGEJO_REPO=owner/repo

apps/api/Dockerfile

@@ -60,8 +60,11 @@ COPY --from=build /repo/apps/web/dist ./apps/web/dist
 
 WORKDIR /repo/apps/api
 EXPOSE 3000
-# Applies pending migrations, then seeds the reference data (Diet/Category/
+# Applies pending migrations, seeds the reference data (Diet/Category/
-# Allergy — see src/scripts/seed-runtime.ts) before starting. Both steps are
+# Allergy — see src/scripts/seed-runtime.ts), then runs any pending one-time
-# safe to repeat on every container start: migrate deploy only applies
+# data backfill (src/scripts/backfill-runtime.ts) before starting. migrate
-# pending migrations, and the seed upserts by unique name.
+# deploy only applies pending migrations and the seed upserts by unique
-CMD ["sh", "-c", "node_modules/.bin/prisma migrate deploy && node dist/scripts/seed-runtime.js && node dist/server.js"]
+# name, so both are safe to repeat every start; the backfill step gates
+# itself on a `backfill_state` row (no-op once done) and is written never to
+# fail the boot — see its doc comment.
+CMD ["sh", "-c", "node_modules/.bin/prisma migrate deploy && node dist/scripts/seed-runtime.js && node dist/scripts/backfill-runtime.js && node dist/server.js"]

apps/api/package.json

@@ -23,10 +23,12 @@
     "@batch-cooking/shared": "workspace:*",
     "@prisma/client": "^5.22.0",
     "argon2": "0.31.2",
+    "cookie": "^2.0.1",
     "dotenv": "^16.4.5",
     "express": "^4.21.1",
     "jsonwebtoken": "^9.0.3",
     "prisma": "^5.22.0",
+    "socket.io": "^4.8.3",
     "zod": "^3.23.8"
   },
   "devDependencies": {
@@ -38,6 +40,7 @@
     "chai": "^5.1.2",
     "cross-env": "^10.1.0",
     "mocha": "^10.8.2",
+    "socket.io-client": "^4.8.3",
     "supertest": "^7.0.0",
     "tsx": "^4.19.2",
     "typescript": "^5.7.2"

apps/api/prisma/migrations/20260828130000_admin_metrics/migration.sql

@@ -0,0 +1,32 @@
+-- AlterTable: usage-metrics timestamps. Existing rows adopt the migration's
+-- own timestamp (acceptable one-off skew for trend charts — same posture as
+-- the ingredient_unit_catalog migration).
+ALTER TABLE "user_profiles" ADD COLUMN "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP;
+ALTER TABLE "recipe" ADD COLUMN "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP;
+ALTER TABLE "planning" ADD COLUMN "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP;
+ALTER TABLE "planning_item" ADD COLUMN "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP;
+
+-- CreateTable
+CREATE TABLE "analytics_events" (
+    "id" SERIAL NOT NULL,
+    "type" TEXT NOT NULL,
+    "actor_type" TEXT NOT NULL,
+    "actor_id" INTEGER,
+    "context" JSONB,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "analytics_events_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "analytics_events_type_created_at_idx" ON "analytics_events"("type", "created_at");
+
+-- CreateTable
+CREATE TABLE "worker_heartbeats" (
+    "worker_key" TEXT NOT NULL,
+    "last_seen_at" TIMESTAMP(3) NOT NULL,
+    "last_run_at" TIMESTAMP(3),
+    "last_result" JSONB,
+
+    CONSTRAINT "worker_heartbeats_pkey" PRIMARY KEY ("worker_key")
+);

apps/api/prisma/migrations/20260828140000_ingredient_placeholder/migration.sql

@@ -0,0 +1,14 @@
+-- AlterTable: off-catalog ingredient "placeholder" rows. Every existing row
+-- is a real seeded catalog entry, so the flag defaults to false and the four
+-- new nullable columns stay NULL for them — no backfill needed.
+ALTER TABLE "ingredients" ADD COLUMN "is_placeholder" BOOLEAN NOT NULL DEFAULT false;
+ALTER TABLE "ingredients" ADD COLUMN "display_name" TEXT;
+ALTER TABLE "ingredients" ADD COLUMN "created_by_id" INTEGER;
+ALTER TABLE "ingredients" ADD COLUMN "created_at" TIMESTAMP(3);
+ALTER TABLE "ingredients" ADD COLUMN "reviewed_at" TIMESTAMP(3);
+
+-- CreateIndex
+CREATE INDEX "ingredients_is_placeholder_idx" ON "ingredients"("is_placeholder");
+
+-- AddForeignKey
+ALTER TABLE "ingredients" ADD CONSTRAINT "ingredients_created_by_id_fkey" FOREIGN KEY ("created_by_id") REFERENCES "user_profiles"("id") ON DELETE SET NULL ON UPDATE CASCADE;

apps/api/prisma/migrations/20260829120000_step_tech_step_temperature/migration.sql

@@ -0,0 +1,22 @@
+-- CreateTable: temperatures mentioned in the same clause as a detected
+-- technique — regex-extracted (services/tech-step-intent-service), no
+-- foreign key of its own (the structured value is the data). Same
+-- composite FK + ON DELETE CASCADE shape as step_tech_step_ingredient /
+-- step_tech_step_utensil (see 20260826121000_step_tech_step_metadata).
+CREATE TABLE "step_tech_step_temperature" (
+    "id" SERIAL NOT NULL,
+    "step_id" INTEGER NOT NULL,
+    "tech_step_order" INTEGER NOT NULL,
+    "start" INTEGER NOT NULL,
+    "end" INTEGER NOT NULL,
+    "celsius" DECIMAL(6,2),
+    "gas_mark" INTEGER,
+    "qualitative" TEXT,
+    "raw" TEXT NOT NULL,
+    "source" TEXT NOT NULL DEFAULT 'auto',
+
+    CONSTRAINT "step_tech_step_temperature_pkey" PRIMARY KEY ("id")
+);
+
+-- AddForeignKey
+ALTER TABLE "step_tech_step_temperature" ADD CONSTRAINT "step_tech_step_temperature_step_id_tech_step_order_fkey" FOREIGN KEY ("step_id", "tech_step_order") REFERENCES "step_tech_step"("step_id", "order") ON DELETE CASCADE ON UPDATE CASCADE;

apps/api/prisma/migrations/20260904120000_backfill_state/migration.sql

@@ -0,0 +1,11 @@
+-- CreateTable: idempotency ledger for one-time data backfills run from the
+-- production image's start command (apps/api/Dockerfile CMD ->
+-- src/scripts/backfill-runtime.ts). One row per completed backfill, keyed
+-- by an opaque backfill name; presence of the row is the "already done,
+-- don't repeat" signal. See the `BackfillState` model doc comment.
+CREATE TABLE "backfill_state" (
+    "key" TEXT NOT NULL,
+    "completed_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "backfill_state_pkey" PRIMARY KEY ("key")
+);

apps/api/prisma/migrations/20260905120000_leftovers_portions_requested/migration.sql

@@ -0,0 +1,27 @@
+-- Splits "portions to prepare" from "portions actually needed" on a
+-- planning slot, and adds the two columns a leftovers-serving item needs
+-- (its source item + how much of its own pool was thrown away). Purely
+-- additive — no existing column renamed. See the `PlanningItem` model doc
+-- comments and issue #34.
+
+-- `discarded_portions` and `source_planning_item_id` are trivial adds.
+ALTER TABLE "planning_item"
+  ADD COLUMN "discarded_portions" INTEGER NOT NULL DEFAULT 0,
+  ADD COLUMN "source_planning_item_id" INTEGER;
+
+-- `portions_requested` is NOT NULL but the table may have rows already:
+-- add it nullable, backfill, then lock it down — same discipline as the
+-- `ingredient_unit_catalog` / `planning_item_portions` migrations. Every
+-- pre-existing row predates this feature, so it had no leftovers:
+-- requested == prepared at the time it was added.
+ALTER TABLE "planning_item" ADD COLUMN "portions_requested" INTEGER;
+UPDATE "planning_item" SET "portions_requested" = "portions";
+ALTER TABLE "planning_item" ALTER COLUMN "portions_requested" SET NOT NULL;
+
+-- Self-FK for a "leftovers" item pointing back at the item it draws from.
+-- ON DELETE CASCADE: removing the source item removes everything served
+-- from its pool too (same as the Planning -> PlanningItem cascade).
+ALTER TABLE "planning_item"
+  ADD CONSTRAINT "planning_item_source_planning_item_id_fkey"
+  FOREIGN KEY ("source_planning_item_id") REFERENCES "planning_item"("id")
+  ON DELETE CASCADE ON UPDATE CASCADE;

apps/api/prisma/migrations/20260906120000_tour_scenarios/migration.sql

@@ -0,0 +1,65 @@
+-- Guided-tour scenarios, their steps, the catalogue of valid highlight
+-- targets, and per-user "seen" progress. All four tables are new — plain
+-- CREATEs, nothing to backfill. See issues #42 (the tour engine) and #44
+-- (admin CRUD + the DB-backed model this migration implements, which
+-- revises #42's originally-planned in-code registry).
+
+-- CreateTable
+CREATE TABLE "tour_target" (
+    "key" TEXT NOT NULL,
+    "description" TEXT NOT NULL,
+
+    CONSTRAINT "tour_target_pkey" PRIMARY KEY ("key")
+);
+
+-- CreateTable
+CREATE TABLE "tour_scenario" (
+    "id" SERIAL NOT NULL,
+    "key" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "enabled" BOOLEAN NOT NULL DEFAULT true,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_at" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "tour_scenario_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "tour_scenario_step" (
+    "id" SERIAL NOT NULL,
+    "scenario_id" INTEGER NOT NULL,
+    "order" INTEGER NOT NULL,
+    "route" TEXT,
+    "target_key" TEXT NOT NULL,
+    "title" TEXT NOT NULL,
+    "content" TEXT NOT NULL,
+
+    CONSTRAINT "tour_scenario_step_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "tour_progress" (
+    "user_profile_id" INTEGER NOT NULL,
+    "scenario_id" INTEGER NOT NULL,
+    "completed_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "tour_progress_pkey" PRIMARY KEY ("user_profile_id","scenario_id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "tour_scenario_key_key" ON "tour_scenario"("key");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "tour_scenario_step_scenario_id_order_key" ON "tour_scenario_step"("scenario_id", "order");
+
+-- AddForeignKey
+ALTER TABLE "tour_scenario_step" ADD CONSTRAINT "tour_scenario_step_scenario_id_fkey" FOREIGN KEY ("scenario_id") REFERENCES "tour_scenario"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "tour_scenario_step" ADD CONSTRAINT "tour_scenario_step_target_key_fkey" FOREIGN KEY ("target_key") REFERENCES "tour_target"("key") ON DELETE RESTRICT ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "tour_progress" ADD CONSTRAINT "tour_progress_user_profile_id_fkey" FOREIGN KEY ("user_profile_id") REFERENCES "user_profiles"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "tour_progress" ADD CONSTRAINT "tour_progress_scenario_id_fkey" FOREIGN KEY ("scenario_id") REFERENCES "tour_scenario"("id") ON DELETE CASCADE ON UPDATE CASCADE;

apps/api/prisma/migrations/20260908120000_contact_message/migration.sql

@@ -0,0 +1,23 @@
+-- Contact-form messages (issue #80). New table only — nothing to backfill.
+-- `author_id` is nullable with ON DELETE SET NULL so a report survives its
+-- sender's account deletion (same as ingredients.created_by_id).
+
+-- CreateTable
+CREATE TABLE "contact_message" (
+    "id" SERIAL NOT NULL,
+    "author_id" INTEGER,
+    "type" TEXT NOT NULL,
+    "message" TEXT NOT NULL,
+    "page_url" TEXT,
+    "user_agent" TEXT,
+    "app_version" TEXT,
+    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "contact_message_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "contact_message_created_at_idx" ON "contact_message"("created_at");
+
+-- AddForeignKey
+ALTER TABLE "contact_message" ADD CONSTRAINT "contact_message_author_id_fkey" FOREIGN KEY ("author_id") REFERENCES "user_profiles"("id") ON DELETE SET NULL ON UPDATE CASCADE;

apps/api/prisma/migrations/20260908130000_contact_message_forgejo_link/migration.sql

@@ -0,0 +1,8 @@
+-- Link a contact message to the Forgejo issue an admin created from it
+-- (issue #81). Two nullable columns, no backfill — existing rows have no
+-- linked issue.
+
+-- AlterTable
+ALTER TABLE "contact_message"
+    ADD COLUMN "forgejo_issue_number" INTEGER,
+    ADD COLUMN "forgejo_issue_url" TEXT;

apps/api/prisma/migrations/20260909120000_recipe_ingredient_quantity_optional/migration.sql

@@ -0,0 +1,8 @@
+-- Ingrédients d'assaisonnement « selon le goût » (issue #128, puce 1 de #3) :
+-- une ligne de recette peut désormais n'avoir ni quantité ni unité. Purement
+-- additif — toutes les lignes existantes gardent leurs valeurs, aucune n'est
+-- réécrite.
+
+-- AlterTable
+ALTER TABLE "recipe_ingredient" ALTER COLUMN "quantity" DROP NOT NULL;
+ALTER TABLE "recipe_ingredient" ALTER COLUMN "unit_id" DROP NOT NULL;

apps/api/prisma/migrations/20260909130000_drop_recipe_diet/migration.sql

@@ -0,0 +1,7 @@
+-- Régimes d'une recette calculés depuis ses ingrédients (issue #131, puce 4
+-- de #3) — `RecipeDiet` (tag manuel) est supprimé : `RecipeSummaryView.diets`
+-- est désormais dérivé de `IngredientDiet` + de l'allergène `gluten` côté
+-- lecture (voir `computeRecipeDietViews`). Aucune donnée à conserver.
+
+-- DropTable
+DROP TABLE "recipe_diet";

apps/api/prisma/migrations/20260909140000_tech_step_placeholder/migration.sql

@@ -0,0 +1,16 @@
+-- AlterTable: off-catalog technique "placeholder" rows (issue #130, puce 3
+-- de #3) — a user names a technique the catalog is missing while correcting a
+-- step. Every existing row is a real seeded catalog entry, so the flag
+-- defaults to false and the four new nullable columns stay NULL for them —
+-- no backfill needed. Mirrors the `ingredients` placeholder migration.
+ALTER TABLE "tech_step" ADD COLUMN "is_placeholder" BOOLEAN NOT NULL DEFAULT false;
+ALTER TABLE "tech_step" ADD COLUMN "display_name" TEXT;
+ALTER TABLE "tech_step" ADD COLUMN "created_by_id" INTEGER;
+ALTER TABLE "tech_step" ADD COLUMN "created_at" TIMESTAMP(3);
+ALTER TABLE "tech_step" ADD COLUMN "reviewed_at" TIMESTAMP(3);
+
+-- CreateIndex
+CREATE INDEX "tech_step_is_placeholder_idx" ON "tech_step"("is_placeholder");
+
+-- AddForeignKey
+ALTER TABLE "tech_step" ADD CONSTRAINT "tech_step_created_by_id_fkey" FOREIGN KEY ("created_by_id") REFERENCES "user_profiles"("id") ON DELETE SET NULL ON UPDATE CASCADE;

apps/api/prisma/schema.prisma

@@ -49,7 +49,6 @@ model Diet {
   key String @unique
 
   users       UserProfile[]
-  recipes     RecipeDiet[]
   ingredients IngredientDiet[]
 
   @@map("diet")
@@ -103,6 +102,10 @@ model UserProfile {
   tokenVersion Int      @default(0) @map("token_version")
   houseId      Int?     @map("house_id")
   dietId       Int?     @map("diet_id")
+  /// See `Planning.createdAt` — same admin-metrics-only timestamp, added by
+  /// the `admin_metrics` migration for the dashboard's signup curve. No
+  /// application code reads it (auth doesn't need it).
+  createdAt    DateTime @default(now()) @map("created_at")
 
   house               House?                          @relation("HouseMember", fields: [houseId], references: [id], onDelete: SetNull)
   diet                Diet?                           @relation(fields: [dietId], references: [id], onDelete: SetNull)
@@ -121,10 +124,21 @@ model UserProfile {
   /// list regardless of that real-world cardinality.
   administeredHouses  House[]                         @relation("HouseAdmin")
   preferences         UserPreference?
+  /// Guided-tour scenarios this profile has seen (completed or skipped) —
+  /// see {@link TourProgress} and issues #42 / #44.
+  tourProgress        TourProgress[]
   /// Tech-step corrections this profile has submitted (any profile that can
   /// view a recipe may correct its tech-step matches, not just its author —
   /// see `StepTechStepCorrection.correctorId`).
   techStepCorrections StepTechStepCorrection[]
+  /// Placeholder `Ingredient` rows this profile created by typing a free-text
+  /// ingredient the catalog didn't cover — see `Ingredient.isPlaceholder`.
+  createdIngredientPlaceholders Ingredient[] @relation("PlaceholderCreator")
+  /// Placeholder `TechStep` rows this profile proposed while correcting a step
+  /// — see `TechStep.isPlaceholder`.
+  createdTechStepPlaceholders   TechStep[]   @relation("TechStepPlaceholderCreator")
+  /// Contact-form messages this profile has sent — see {@link ContactMessage}.
+  contactMessages               ContactMessage[]
 
   @@map("user_profiles")
 }
@@ -192,6 +206,12 @@ model Planning {
   startDate  DateTime @map("start_date") @db.Date
   finishDate DateTime @map("finish_date") @db.Date
   houseId    Int      @map("house_id")
+  /// When this planning row was first created. Added by the `admin_metrics`
+  /// migration purely for the admin dashboard's activity curves — no
+  /// application code reads it. Rows that predate the migration all get the
+  /// migration's own timestamp (same acceptable one-off skew as the
+  /// `ingredient_unit_catalog` migration), which is fine for a trend chart.
+  createdAt  DateTime @default(now()) @map("created_at")
 
   house House          @relation(fields: [houseId], references: [id], onDelete: Cascade)
   items PlanningItem[]
@@ -205,10 +225,36 @@ model PlanningItem {
   weekDay    String @map("week_day")
   meal       String
   recipeId   Int    @map("recipe_id")
+  /// Portions actually *prepared* for this slot — always a whole multiple
+  /// of `recipe.portions` (a dish is cooked in whole batches). Derived from
+  /// `portionsRequested` + the recipe's yield via `computeBatchedPortions`
+  /// (`@batch-cooking/shared`) in `addPlanningItem`, never sent raw by the
+  /// client. On a "leftovers" item (`sourcePlanningItemId` set) it always
+  /// equals `portionsRequested`.
   portions   Int
+  /// How many portions this slot must actually feed. For a fresh item
+  /// (`sourcePlanningItemId` null), `<= portions` — the gap is this item's
+  /// leftover pool. For a "leftovers" item, always `== portions` (serving
+  /// leftovers prepares nothing new, so it can't generate more — no
+  /// leftovers-on-leftovers).
+  portionsRequested    Int  @map("portions_requested")
+  /// Non-null only on a "leftovers" item: the item whose leftover pool it
+  /// draws from. `onDelete: Cascade` — deleting the source item also
+  /// deletes everything served from its leftovers (same reasoning as the
+  /// existing `Planning` -> `PlanningItem` cascade).
+  sourcePlanningItemId Int? @map("source_planning_item_id")
+  /// Portions of *this* item's leftover pool explicitly thrown away (the
+  /// basket's "jeter" button). Always 0 on a "leftovers" item (its own
+  /// pool is null by construction).
+  discardedPortions    Int  @default(0) @map("discarded_portions")
+  /// See `Planning.createdAt` — same admin-metrics-only timestamp.
+  createdAt  DateTime @default(now()) @map("created_at")
 
   planning           Planning       @relation(fields: [planningId], references: [id], onDelete: Cascade)
   recipe             Recipe         @relation(fields: [recipeId], references: [id])
+  sourcePlanningItem PlanningItem?  @relation("PlanningItemLeftoverSource", fields: [sourcePlanningItemId], references: [id], onDelete: Cascade)
+  /// The "leftovers" items served from this item's own pool — inverse of `sourcePlanningItem`.
+  leftoverUses       PlanningItem[] @relation("PlanningItemLeftoverSource")
 
   @@map("planning_item")
 }
@@ -319,6 +365,10 @@ model Recipe {
   /// the author had no household yet.
   authorHouseId Int?             @map("author_house_id")
   visibility    RecipeVisibility @default(PERSONAL)
+  /// See `Planning.createdAt` — same admin-metrics-only timestamp, added by
+  /// the `admin_metrics` migration for the dashboard's "recipes created"
+  /// curve. No application code reads it.
+  createdAt     DateTime         @default(now()) @map("created_at")
 
   author        UserProfile        @relation(fields: [authorId], references: [id])
   authorHouse   House?             @relation(fields: [authorHouseId], references: [id], onDelete: SetNull)
@@ -327,7 +377,6 @@ model Recipe {
   steps         Step[]
   planningItems PlanningItem[]
   favoritedBy   RecipeFavorite[]
-  diets         RecipeDiet[]
 
   @@unique([sourceId, externalId])
   @@map("recipe")
@@ -348,21 +397,6 @@ model RecipeFavorite {
   @@map("recipe_favorite")
 }
 
-/// Explicit join table for the recipe <-> diet "associated regime" tags
-/// (e.g. a recipe can be tagged both `Végétarien` and `Sans gluten`) — a
-/// manual reminder set by whoever creates/edits the recipe, not computed
-/// from its ingredients.
-model RecipeDiet {
-  recipeId Int @map("recipe_id")
-  dietId   Int @map("diet_id")
-
-  recipe Recipe @relation(fields: [recipeId], references: [id], onDelete: Cascade)
-  diet   Diet   @relation(fields: [dietId], references: [id], onDelete: Cascade)
-
-  @@id([recipeId, dietId])
-  @@map("recipe_diet")
-}
-
 /// `key` is `@unique` — not in the original spec doc, added so the seed
 /// script (reference-seed-data.ts) can `upsert` by key and stay
 /// idempotent/safe to re-run, same reason as `Diet.key`/`Category.key`. A
@@ -514,6 +548,38 @@ model Ingredient {
   /// ingredient↔recipe linking in the database, the UI only pre-fills the
   /// catalog's own search with this ingredient's name).
   reproducible Boolean               @default(false)
+  /// `true` = a "placeholder" row: a free-text ingredient a user typed on a
+  /// recipe line because the seeded catalog had nothing matching (see
+  /// specs/batch-cooking-modele.md's "ingrédients hors-catalogue"). Such a
+  /// row has `displayName` non-null, a generated `key` (`placeholder:<uuid>`,
+  /// never an i18n label), and the default metadata (`JAR`/`dryGoods`/`other`,
+  /// no allergen/diet links). It is referenced by `RecipeIngredient` like any
+  /// other `Ingredient`, but `GET /reference/ingredients` and
+  /// `ingredient-matcher.ts`'s `loadIngredientCatalog` both exclude it — it is
+  /// never a browsable/matchable target, only a per-line stand-in a
+  /// maintainer later promotes into a real catalog entry by hand. The
+  /// `/admin/catalog/placeholders` view groups these by normalized name so
+  /// the maintainer sees which ingredients the catalog is missing.
+  isPlaceholder Boolean              @default(false) @map("is_placeholder")
+  /// Display name of a placeholder ingredient — the exact text the user
+  /// typed. `null` for a real catalog row (whose label lives in i18n under
+  /// `catalog.ingredients.<key>`). Invariant "non-null iff `isPlaceholder`"
+  /// is enforced service-side, not by the schema (same posture as other
+  /// cross-field invariants here).
+  displayName   String?              @map("display_name")
+  /// Profile that first created this placeholder — context for the admin
+  /// catalog-gap review. `onDelete: SetNull` so deleting an account never
+  /// blocks on, or cascades into, the recipes that still use its placeholder.
+  /// `null` for a real catalog row.
+  createdById   Int?                 @map("created_by_id")
+  /// When this placeholder was created. `null` for a real catalog row (the
+  /// seed carries no timestamp).
+  createdAt     DateTime?            @map("created_at")
+  /// Stamped when an admin has triaged this catalog gap
+  /// (`PATCH /admin/catalog/placeholders/mark-reviewed`) — the group then
+  /// drops out of the default "à traiter" list. `null` while pending / for a
+  /// real catalog row.
+  reviewedAt    DateTime?            @map("reviewed_at")
 
   recipes       RecipeIngredient[]
   allergies     IngredientAllergy[]
@@ -524,7 +590,10 @@ model Ingredient {
   /// Mentions of this ingredient detected in a step's free text alongside a
   /// technique — see `StepTechStepIngredient`.
   stepTechSteps StepTechStepIngredient[]
+  /// The profile that created this row when it is a placeholder — see `createdById`.
+  createdBy     UserProfile?          @relation("PlaceholderCreator", fields: [createdById], references: [id], onDelete: SetNull)
 
+  @@index([isPlaceholder])
   @@map("ingredients")
 }
 
@@ -617,12 +686,17 @@ model Unit {
 model RecipeIngredient {
   recipeId     Int      @map("recipe_id")
   ingredientId Int      @map("ingredient_id")
-  quantity     Decimal @db.Decimal(10, 2)
+  /// `null` (with `unitId` also `null`) = a "selon le goût" seasoning line —
-  unitId       Int     @map("unit_id")
+  /// salt, pepper… added to taste, with nothing to scale by portions or to
+  /// aggregate on a shopping list. The "both null or neither" invariant is
+  /// enforced service-side (and by `recipeIngredientInputSchema`), not by
+  /// the schema — same posture as this file's other cross-field invariants.
+  quantity     Decimal? @db.Decimal(10, 2)
+  unitId       Int?     @map("unit_id")
 
   recipe     Recipe     @relation(fields: [recipeId], references: [id], onDelete: Cascade)
   ingredient Ingredient @relation(fields: [ingredientId], references: [id], onDelete: Cascade)
-  unit       Unit       @relation(fields: [unitId], references: [id])
+  unit       Unit?      @relation(fields: [unitId], references: [id])
 
   @@id([recipeId, ingredientId])
   @@map("recipe_ingredient")
@@ -647,6 +721,33 @@ model TechStep {
   id  Int    @id @default(autoincrement())
   key String @unique
 
+  /// `true` = a "placeholder" technique: a free-text technique a user typed
+  /// while correcting a step, because nothing in the seeded catalog matched
+  /// (issue #131 for the ingredient precedent this mirrors — see
+  /// `Ingredient.isPlaceholder`). Such a row has `displayName` non-null, a
+  /// generated `key` (`placeholder:<uuid>`, never an i18n label), no
+  /// training data of its own, and is excluded from
+  /// `GET /reference/tech-steps`. It is still referenced by `StepTechStep`
+  /// like any other technique (the correction that created it applies
+  /// immediately), but a maintainer reviews it at
+  /// `/admin/catalogue` (Techniques tab) and promotes it into the real
+  /// catalog by hand (`reference-seed-data.ts` + `tech-step-training-data.ts`).
+  isPlaceholder Boolean   @default(false) @map("is_placeholder")
+  /// The exact text the user typed — `null` for a real catalog row (whose
+  /// label lives in i18n under `catalog.techSteps.<key>`). Non-null iff
+  /// `isPlaceholder`, enforced service-side.
+  displayName   String?   @map("display_name")
+  /// Profile that first proposed this technique — context for the admin
+  /// review. `onDelete: SetNull` so deleting an account never blocks on the
+  /// recipes still using its placeholder. `null` for a real catalog row.
+  createdById   Int?      @map("created_by_id")
+  /// When this placeholder was proposed. `null` for a real catalog row.
+  createdAt     DateTime? @map("created_at")
+  /// Stamped once a maintainer has triaged this proposal
+  /// (`PATCH /admin/api/catalog/tech-step-placeholders/mark-reviewed`).
+  /// `null` while pending / for a real catalog row.
+  reviewedAt    DateTime? @map("reviewed_at")
+
   steps                  StepTechStep[]
   /// Corrections where this technique was the *previous* (possibly wrong)
   /// match — see `StepTechStepCorrection.previousTechStepId`.
@@ -657,7 +758,10 @@ model TechStep {
   /// Training-corpus suggestions targeting this technique — see
   /// `TechStepTrainingSuggestion`.
   trainingSuggestions    TechStepTrainingSuggestion[]
+  /// The profile that proposed this row when it is a placeholder — see `createdById`.
+  createdBy              UserProfile?                @relation("TechStepPlaceholderCreator", fields: [createdById], references: [id], onDelete: SetNull)
 
+  @@index([isPlaceholder])
   @@map("tech_step")
 }
 
@@ -756,6 +860,9 @@ model StepTechStep {
   /// Utensils mentioned in the same clause as this technique occurrence —
   /// see `StepTechStepUtensil`.
   utensils    StepTechStepUtensil[]
+  /// Temperatures mentioned in the same clause as this technique occurrence
+  /// — see `StepTechStepTemperature`.
+  temperatures StepTechStepTemperature[]
 
   @@id([stepId, order])
   @@map("step_tech_step")
@@ -814,6 +921,38 @@ model StepTechStepUtensil {
   @@map("step_tech_step_utensil")
 }
 
+/// A temperature mention found in the same *clause* as one `StepTechStep`
+/// occurrence — same association rule as `StepTechStepIngredient` /
+/// `StepTechStepUtensil` (see their doc comments). Detected by
+/// `services/tech-step-intent-service`'s regex pass (`temperature_extraction.py`),
+/// not a `PhraseMatcher` — a temperature is numeric/pattern, not a word from
+/// a finite vocabulary. Carries no foreign key: the structured value *is*
+/// the data. At least one of `celsius` / `gasMark` / `qualitative` is
+/// non-null:
+///   - `celsius`     — an oven/pan temperature in °C (a °F mention is
+///                     converted + rounded upstream).
+///   - `gasMark`     — a gas-mark / thermostat number ("th. 6").
+///   - `qualitative` — "low" | "medium" | "high" ("feu doux/moyen/vif").
+/// `raw` is the exact recognized fragment, `start`/`end` its span in
+/// `Step.description` ([start, end), same as `StepTechStep.start`/`end`).
+/// `source` mirrors the others (`"auto"` only today — no correction UI).
+model StepTechStepTemperature {
+  id            Int      @id @default(autoincrement())
+  stepId        Int      @map("step_id")
+  techStepOrder Int      @map("tech_step_order")
+  start         Int
+  end           Int
+  celsius       Decimal? @db.Decimal(6, 2)
+  gasMark       Int?     @map("gas_mark")
+  qualitative   String?
+  raw           String
+  source        String   @default("auto")
+
+  stepTechStep StepTechStep @relation(fields: [stepId, techStepOrder], references: [stepId, order], onDelete: Cascade)
+
+  @@map("step_tech_step_temperature")
+}
+
 /// One user-submitted correction to a `Step`'s detected techniques —
 /// captures ADD (a missing technique the classifier didn't find),
 /// REMOVE (a wrong technique it did), or RELABEL (both) as a single shape:
@@ -878,7 +1017,7 @@ model StepTechStepCorrection {
 ///
 /// `suggestedSynonyms`/`suggestedUtterances` are native Postgres arrays
 /// (`String[]`), not a join table — unlike this schema's other list-shaped
-/// data (`RecipeDiet`, `UserProfileAllergy`...), these strings are free text
+/// data (`RecipeIngredient`, `UserProfileAllergy`...), these strings are free text
 /// proposed once for a human to read, not ids referencing another catalog
 /// table, so there's nothing for a join table to normalize against.
 model TechStepTrainingSuggestion {
@@ -930,3 +1069,190 @@ model AdminUser {
 
   @@map("admin_users")
 }
+
+/// One recorded product event, for the admin dashboard's usage metrics.
+/// Written fire-and-forget by `lib/analytics.service.ts`'s `recordEvent`
+/// from a handful of key service methods (signup, recipe import/create,
+/// planning add, cooking-session open, tech-step correction, shopping-list
+/// view) — never on the request's critical path, so a failed insert is
+/// logged and swallowed, never surfaced to the user.
+///
+/// `type` is a free `String` (`"user.signup"`, `"recipe.imported"`…), not
+/// an enum: adding a new event to instrument is a one-line call site
+/// change with **no migration**. `actorId` is a `UserProfile.id` when
+/// `actorType == "user"` but carries **no FK** — an event is an immutable
+/// historical fact that must outlive the account it describes (a deleted
+/// user's signup still counts on the curve). `context` is a small free
+/// JSON blob (`{ sourceKey, recipeId, … }`) for slicing later; nothing
+/// queries into it today.
+model AnalyticsEvent {
+  id        Int      @id @default(autoincrement())
+  type      String
+  actorType String   @map("actor_type")
+  actorId   Int?     @map("actor_id")
+  context   Json?
+  createdAt DateTime @default(now()) @map("created_at")
+
+  @@index([type, createdAt])
+  @@map("analytics_events")
+}
+
+/// Liveness/last-run record for a background worker that has no inbound
+/// HTTP surface of its own — one row per worker (`workerKey`, today only
+/// `"tech-step-llm-worker"`). The worker POSTs `/internal/tech-steps/heartbeat`
+/// (`requireInternalWorker`) on boot, on every scheduler tick, and after
+/// each job; the admin monitoring board reads this to show the worker as
+/// up / stale / down and to surface its last job result. Upserted, never
+/// accumulated — only the latest state matters.
+model WorkerHeartbeat {
+  workerKey  String    @id @map("worker_key")
+  lastSeenAt DateTime  @map("last_seen_at")
+  /// Set only by a `"job"` heartbeat — the last time the worker actually ran a job (vs. just a tick proving it's alive).
+  lastRunAt  DateTime? @map("last_run_at")
+  /// Small JSON summary of that last job (`{ job, ok, counts }`).
+  lastResult Json?     @map("last_result")
+
+  @@map("worker_heartbeats")
+}
+
+/// Idempotency ledger for one-time data backfills run from the production
+/// image's start command (`src/scripts/backfill-runtime.ts`, invoked in
+/// apps/api/Dockerfile's CMD after `prisma migrate deploy` + `seed-runtime`).
+///
+/// The CMD re-runs on every container start, but a backfill here *rewrites*
+/// existing rows (unlike `seed-runtime`, which only upserts and is safe to
+/// repeat) — e.g. `step_tech_step_metadata_20260904` recomputes every
+/// `StepTechStep` sequence against the intent service. So each backfill
+/// gates itself on a row in this table: `key` present → already done, skip;
+/// absent → run it, then insert the row. A schema migration only ever
+/// creates the table structure; it can't run TypeScript against the intent
+/// service, which is why this is a start-command step and not a migration.
+model BackfillState {
+  key         String   @id
+  completedAt DateTime @default(now()) @map("completed_at")
+
+  @@map("backfill_state")
+}
+
+/// Catalogue des cibles de surlignage valides pour un didacticiel guidé —
+/// même esprit que `TechStep`/`Unit`/`Diet` : une valeur de référence
+/// maintenue par le code, seedée (`reference-seed-data.ts`). Chaque `key`
+/// correspond à un attribut `data-tour-<key>` réellement posé quelque part
+/// dans le frontend ; un admin choisit parmi ces cibles en construisant un
+/// scénario, il ne peut pas en inventer une (poser un nouveau `data-tour-*`
+/// reste un changement de code + une ligne seedée ici). Voir issues #42/#44.
+model TourTarget {
+  key         String @id
+  /// Libellé pour aider l'admin à choisir dans le formulaire, ex.
+  /// "Bouton + d'un créneau du planning".
+  description String
+
+  steps TourScenarioStep[]
+
+  @@map("tour_target")
+}
+
+/// Un scénario de didacticiel — une séquence d'étapes surlignées, rejouable
+/// et éditable depuis l'admin (#44). `key` est une clé stable (comme
+/// `Diet.key`/`Source.key`) : `"general"` / `"techStepMetadata"` pour les
+/// deux scénarios seedés, libre pour un scénario créé par un admin.
+model TourScenario {
+  id        Int      @id @default(autoincrement())
+  key       String   @unique
+  /// Libellé admin, ex. "Tour d'orientation".
+  name      String
+  /// Désactiver sans supprimer — `GET /reference/tours` ne renvoie que les
+  /// scénarios activés.
+  enabled   Boolean  @default(true)
+  createdAt DateTime @default(now()) @map("created_at")
+  updatedAt DateTime @updatedAt @map("updated_at")
+
+  steps    TourScenarioStep[]
+  progress TourProgress[]
+
+  @@map("tour_scenario")
+}
+
+/// Une étape d'un scénario : (si `route` est défini) navigue vers cette
+/// route, puis surligne l'élément portant `data-tour-<targetKey>` avec un
+/// popover `title`/`content`. `title`/`content` sont du **texte libre**
+/// saisi par l'admin, pas des clés i18n (#44 : le chrome de l'UI vient
+/// d'i18next, le contenu administré dynamiquement est du texte, comme le
+/// nom d'une recette).
+model TourScenarioStep {
+  id         Int     @id @default(autoincrement())
+  scenarioId Int     @map("scenario_id")
+  order      Int
+  /// Route React Router à ouvrir avant cette étape ; `null` = rester sur la
+  /// route de l'étape précédente.
+  route      String?
+  targetKey  String  @map("target_key")
+  title      String
+  content    String
+
+  scenario TourScenario @relation(fields: [scenarioId], references: [id], onDelete: Cascade)
+  target   TourTarget   @relation(fields: [targetKey], references: [key])
+
+  @@unique([scenarioId, order])
+  @@map("tour_scenario_step")
+}
+
+/// Présence d'une ligne = ce profil a *vu* ce scénario. Le terminer **ou**
+/// le passer volontairement crée la ligne (pas de re-nag après un skip
+/// délibéré). Révise la version de #42 (`tourKey: String` libre) en une
+/// vraie FK vers `TourScenario` (#44).
+model TourProgress {
+  userProfileId Int      @map("user_profile_id")
+  scenarioId    Int      @map("scenario_id")
+  completedAt   DateTime @default(now()) @map("completed_at")
+
+  userProfile UserProfile  @relation(fields: [userProfileId], references: [id], onDelete: Cascade)
+  scenario    TourScenario @relation(fields: [scenarioId], references: [id], onDelete: Cascade)
+
+  @@id([userProfileId, scenarioId])
+  @@map("tour_progress")
+}
+
+// -----------------------------------------------------------------------------
+// Contact
+// In-app "report a bug / suggestion" form — user-submitted, read-only for
+// admins at /admin/messages. See issues #80 (this) and #81 (turn a message
+// into a Forgejo issue).
+// -----------------------------------------------------------------------------
+
+/// A message sent via the app's contact form (bug, suggestion, other).
+/// Written once by a signed-in user, never edited afterwards — consulted
+/// read-only from the admin app. `authorId` is nullable + `onDelete: SetNull`
+/// (same choice as `Ingredient.createdById`): a bug report keeps its value
+/// even if the account that sent it is deleted in the meantime.
+model ContactMessage {
+  id         Int      @id @default(autoincrement())
+  authorId   Int?     @map("author_id")
+  /// "bug" | "suggestion" | "other" — a plain `String` backed by the shared
+  /// `CONTACT_MESSAGE_TYPES` const (same approach as
+  /// `TechStepTrainingSuggestion.status` / `AnalyticsEvent.type`): adding a
+  /// value is one line, no Postgres enum migration.
+  type       String
+  message    String
+  /// Technical context captured automatically at submit time, for triage —
+  /// all nullable (an older client, or a direct API call, can omit them).
+  pageUrl    String?  @map("page_url")
+  userAgent  String?  @map("user_agent")
+  appVersion String?  @map("app_version")
+  createdAt  DateTime @default(now()) @map("created_at")
+
+  /// Number of the Forgejo issue an admin created from this message via
+  /// `/admin/messages` (issue #81). `null` = no ticket yet. Non-null ⇒ the
+  /// "Créer un ticket" button disappears (one message links to at most one
+  /// issue).
+  forgejoIssueNumber Int?    @map("forgejo_issue_number")
+  /// The issue's html URL (`<base>/<owner>/<repo>/issues/<n>`) — stored
+  /// as-is rather than rebuilt from `FORGEJO_*` config, so the link stays
+  /// correct even if that config changes later.
+  forgejoIssueUrl    String? @map("forgejo_issue_url")
+
+  author UserProfile? @relation(fields: [authorId], references: [id], onDelete: SetNull)
+
+  @@index([createdAt])
+  @@map("contact_message")
+}

apps/api/src/app.ts

@@ -7,8 +7,11 @@ import { errorLogger } from "./middlewares/error-logger.js";
 import { requestLogger } from "./middlewares/request-logger.js";
 import { adminRouter } from "./modules/admin/admin.routes.js";
 import { authRouter } from "./modules/auth/auth.routes.js";
+import { contactRouter } from "./modules/contact/contact.routes.js";
+import { cookingSessionRouter } from "./modules/cooking-session/cooking-session.routes.js";
 import { houseRouter } from "./modules/house/house.routes.js";
 import { techStepWorkerRouter } from "./modules/internal/tech-step-worker.routes.js";
+import { mobileRouter } from "./modules/mobile/mobile.routes.js";
 import { planningRouter } from "./modules/planning/planning.routes.js";
 import { preferencesRouter } from "./modules/preferences/preferences.routes.js";
 import { profileRouter } from "./modules/profile/profile.routes.js";
@@ -33,32 +36,52 @@ export function createServer(): ExpressServer {
   // pipeline (its "finish" listener still fires for a request that never
   // makes it past CORS/body-parsing, not just ones that reach a route).
   server.addMiddleware(requestLogger);
-  // Two allowed origins: the main app (`CORS_ORIGIN`) and the separate
+  // Allowed origin(s) come from `CORS_ORIGIN` (see its own doc comment in
-  // admin app (`ADMIN_CORS_ORIGIN`). The `cors` package matches an incoming
+  // config/env.ts for why the packaged Android app's origin must always be
-  // `Origin` against any entry of the list.
+  // one of them). The admin surface (`/admin/*`) is served by this same API
-  server.setupCore({ corsOrigin: [env.CORS_ORIGIN, env.ADMIN_CORS_ORIGIN] });
+  // and consumed by `apps/web`'s own `/admin/*` routes — same origin as the
+  // rest of the app, so no extra CORS entry.
+  server.setupCore({ corsOrigin: env.CORS_ORIGIN });
 
   server.addRoute("get", "/health", (_req: Request, res: Response) => {
     res.status(200).json({ status: "ok" });
   });
 
   server.mountRouter("/auth", authRouter);
-  // Admin application surface (`apps/admin-web`) — its own auth
+  // Admin application surface — its own auth (`requireAdmin`, distinct
-  // (`requireAdmin`, distinct cookie/secret), never the end-user session.
+  // cookie/secret), never the end-user session. Mounted at `/admin/api`,
-  server.mountRouter("/admin", adminRouter);
+  // *not* bare `/admin`: apps/web's own admin pages live at `/admin/*` too
+  // (`/admin/monitoring`, `/admin/login`...), and this API is served from
+  // the same origin/process as that frontend (see `serveStaticFrontend`
+  // below). A bare `/admin` mount put `GET /admin/monitoring` (API) and the
+  // page route `/admin/monitoring` in direct conflict — Express matches by
+  // path alone, so a hard navigation/refresh on that page was answered by
+  // this router's own handler (raw JSON) instead of falling through to the
+  // SPA's `index.html`. The `/api` segment guarantees no current or future
+  // admin page path can ever collide with an admin API path again.
+  server.mountRouter("/admin/api", adminRouter);
   server.mountRouter("/house", houseRouter);
+  // In-app "signaler un bug / suggestion" form (issue #80) — session
+  // required, one POST. Admins read these rows via `/admin/api/contact`,
+  // never this router.
+  server.mountRouter("/contact", contactRouter);
   // Not user-facing — `services/tech-step-llm-worker` only, guarded by
   // `requireInternalWorker` on every route within (see that router's own
   // doc comment), never `requireAuth`. Mounted alongside the other routers
   // rather than nested under one of them since it isn't scoped to a single
   // recipe/step the way `recipeRouter`'s own correction routes are.
   server.mountRouter("/internal/tech-steps", techStepWorkerRouter);
+  // Public proxy for Forgejo's Releases API (issues #65/#66) — see
+  // mobile.service.ts's doc comment for why this can't just be called
+  // directly from the browser.
+  server.mountRouter("/mobile", mobileRouter);
   server.mountRouter("/planning", planningRouter);
   server.mountRouter("/preferences", preferencesRouter);
   server.mountRouter("/profile", profileRouter);
   server.mountRouter("/recipes", recipeRouter);
   server.mountRouter("/reference", referenceRouter);
   server.mountRouter("/shopping-list", shoppingListRouter);
+  server.mountRouter("/cooking-session", cookingSessionRouter);
   server.mountRouter("/sources", sourcesRouter);
 
   // Serves the built frontend (production Docker image only — see

apps/api/src/config/env.ts

@@ -13,12 +13,26 @@ import { z } from "zod";
 // separate test database this now requires.
 dotenv.config({ path: process.env.NODE_ENV === "test" ? ".env.test" : ".env" });
 
+/**
+ * Treats a blank env var (`FOO=`) as unset. `docker-compose.yml` passes
+ * every optional var through as `${FOO:-}`, which resolves to `""` (not an
+ * absent key) when the stack's `.env` leaves it empty — and a `.env` file
+ * is `.dockerignore`d, so that passthrough is the container's only source
+ * of these. Fields that must *fail closed* on a blank value rather than run
+ * their own format check against `""` (and crash `parse()` at boot) wrap
+ * their schema in this. Used for the `FORGEJO_*` trio below; `COOKIE_SECURE`
+ * folds the same `"" -> undefined` step into its own `.transform`.
+ */
+const blankAsUnset = (value: unknown): unknown => (value === "" ? undefined : value);
+
 /**
  * Schema for every environment variable the API reads. Parsing (below)
  * fails fast at startup if something required is missing/invalid, instead
- * of surfacing as a confusing runtime error later.
+ * of surfacing as a confusing runtime error later. Exported so the parsing
+ * rules (e.g. `blankAsUnset` on the `FORGEJO_*` trio) can be unit-tested
+ * without the process-wide `process.env` the singleton below parses.
  */
-const envSchema = z.object({
+export const envSchema = z.object({
   /** Runtime mode — also toggles test-only behavior (e.g. cheaper argon2 cost, see auth.service.ts). */
   NODE_ENV: z.enum(["development", "test", "production"]).default("development"),
   /** Port the HTTP server listens on. */
@@ -34,8 +48,42 @@ const envSchema = z.object({
   JWT_EXPIRES_IN: z.string().default("7d"),
   /** Name of the httpOnly cookie carrying the session JWT. */
   AUTH_COOKIE_NAME: z.string().default("session"),
-  /** Origin allowed by CORS — must match wherever apps/web is served from. */
+  /**
-  CORS_ORIGIN: z.string().default("http://localhost:5173"),
+   * Origin(s) allowed by CORS, comma-separated — parsed below into a
+   * `string[]` for `ExpressServerCoreOptions.corsOrigin`
+   * (`app.ts`/`express-server.ts`, which passes it straight to the `cors`
+   * package) and reused as-is for the Socket.IO handshake's own CORS config
+   * (`server.ts`, which needs its own since the WS upgrade never runs
+   * through `setupCore`'s middleware).
+   *
+   * Must always include `https://localhost`: the packaged Android app's
+   * WebView is served from exactly that fixed origin (Capacitor's default
+   * for `androidScheme`/hostname — see `apps/web/capacitor.config.ts`'s own
+   * doc comment), and every request it makes to this API — `/auth/login`
+   * and `/auth/signup` included — is genuinely cross-origin, unlike
+   * apps/web's *browser* build, which is served from the very same origin
+   * as this API in production (see docker-compose.yml's `app` service) and
+   * so never needs an entry here at all. Missing this origin doesn't fail
+   * loudly: the `cors` package still answers a preflight `OPTIONS` with 204
+   * for an origin it's about to reject (it only *omits*
+   * `Access-Control-Allow-Origin`), so the request the app's WebView logs
+   * looks identical to a normal one right up until the browser silently
+   * drops the real `POST` — surfacing client-side as a generic "unexpected
+   * error" with no 401/403 anywhere to point at the actual cause. Default
+   * covers both the Vite dev server and the packaged app out of the box; a
+   * real deployment's own web origin (e.g. a production domain) never needs
+   * adding here for the reason above, but the env var still allows
+   * extending/overriding this list (comma-separated) if that ever changes.
+   */
+  CORS_ORIGIN: z
+    .string()
+    .default("http://localhost:5173,https://localhost")
+    .transform((value) =>
+      value
+        .split(",")
+        .map((origin) => origin.trim())
+        .filter((origin) => origin.length > 0),
+    ),
   /**
    * Absolute path to the built frontend (`apps/web/dist`), to serve
    * alongside the API. Optional, no default — only set inside the
@@ -105,12 +153,30 @@ const envSchema = z.object({
     .optional(),
   /** Name of the httpOnly cookie carrying the admin session JWT — must differ from `AUTH_COOKIE_NAME` so the two sessions coexist in one browser. */
   ADMIN_COOKIE_NAME: z.string().default("admin_session"),
-  /** Origin `apps/admin-web` is served from — added to the CORS allow-list alongside `CORS_ORIGIN`. */
-  ADMIN_CORS_ORIGIN: z.string().default("http://localhost:5174"),
   /** Optional seed values read by `src/scripts/create-admin.ts` when its `--email`/`--password`/`--name` flags are omitted — never used by the running server. */
   ADMIN_INITIAL_EMAIL: z.string().optional(),
   ADMIN_INITIAL_PASSWORD: z.string().optional(),
   ADMIN_INITIAL_NAME: z.string().optional(),
+  /**
+   * Forgejo instance + credentials for "create an issue from a contact
+   * message" (`/admin/messages`, issue #81). All three `.optional()` and
+   * checked together by `ForgejoService.isConfigured()` — the feature
+   * **fails closed** when any is missing: the endpoint answers `503` and
+   * the admin UI hides the button (same posture as `ADMIN_JWT_SECRET` /
+   * `INTERNAL_WORKER_SECRET`). Only this one admin action reads them; the
+   * rest of the app never talks to Forgejo.
+   */
+  FORGEJO_BASE_URL: z.preprocess(blankAsUnset, z.string().url().optional()),
+  /** Forgejo personal access token with the `write:issue` (or `issue`) scope. Secret — `.env.example` shows only a `changeme`. */
+  FORGEJO_TOKEN: z.preprocess(blankAsUnset, z.string().optional()),
+  /** Target repo as `owner/repo` (e.g. `kyuno/batchCooking`) — issues are always created here, never a repo chosen at call time. */
+  FORGEJO_REPO: z.preprocess(
+    blankAsUnset,
+    z
+      .string()
+      .regex(/^[^/\s]+\/[^/\s]+$/, "FORGEJO_REPO must look like 'owner/repo'")
+      .optional(),
+  ),
 });
 
 /** Parsed, validated environment — import this instead of reading `process.env` directly anywhere else. */

apps/api/src/db/reference-seed-data.ts

@@ -191,6 +191,114 @@ export const UTENSILS: string[] = [
   "mandoline",
 ];
 
+// Guided-tour highlight targets (issues #42/#44). Each `key` is the suffix
+// of a `data-tour-<key>` attribute the frontend puts on the element the
+// tour points at; `description` is the hint an admin sees when picking a
+// target in the scenario editor. Reference data maintained here, like
+// `TECH_STEPS`/`UTENSILS` — adding a real new target needs a frontend
+// `data-tour-*` *and* a line here.
+export const TOUR_TARGETS: Array<{ key: string; description: string }> = [
+  { key: "nav-planning", description: "Lien « Planning » de la barre latérale" },
+  { key: "nav-recipes", description: "Lien « Recettes » de la barre latérale" },
+  { key: "nav-shopping-list", description: "Lien « Liste de courses » de la barre latérale" },
+  { key: "planning-grid", description: "La grille du planning de la semaine" },
+  { key: "planning-add-recipe", description: "Bouton « + » d'un créneau du planning" },
+  { key: "planning-cook-button", description: "Bouton « Cuisiner » de l'en-tête du planning" },
+  { key: "shopping-list-summary", description: "La liste de courses générée pour la semaine" },
+  {
+    key: "techstep-description",
+    description: "Le texte d'une étape de recette, avec les techniques surlignées",
+  },
+  {
+    key: "techstep-technique-picker",
+    description: "Le sélecteur de technique du popover de correction",
+  },
+];
+
+// The two tours filed in issue #42, as the DB-backed scenarios #44 defines.
+// Only *created* if absent (an admin owns name/enabled/steps afterwards —
+// see `seedTourScenarios`); `content`/`title` are plain French text, not
+// i18n keys (#44). The second tour is deliberately short for now — issue
+// #36 (correction popover closes mid-selection) is still open, so v1 only
+// covers the gestures that already work (select text, pick a technique).
+export const TOUR_SCENARIOS: Array<{
+  key: string;
+  name: string;
+  steps: Array<{ route: string | null; targetKey: string; title: string; content: string }>;
+}> = [
+  {
+    key: "general",
+    name: "Tour d'orientation",
+    steps: [
+      {
+        route: "/",
+        targetKey: "nav-planning",
+        title: "Votre semaine, ici",
+        content: "Le planning est votre point de départ : ce que vous mangez, jour par jour.",
+      },
+      {
+        route: null,
+        targetKey: "nav-recipes",
+        title: "Vos recettes",
+        content:
+          "Retrouvez vos recettes, importez-en depuis d'autres sites, et filtrez selon vos préférences.",
+      },
+      {
+        route: null,
+        targetKey: "nav-shopping-list",
+        title: "La liste de courses",
+        content:
+          "Générée automatiquement à partir de tout ce que vous avez planifié pour la semaine.",
+      },
+      {
+        route: null,
+        targetKey: "planning-grid",
+        title: "Sept jours, cinq repas",
+        content: "Chaque case est un créneau. Ajoutez-y des recettes, ajustez les portions.",
+      },
+      {
+        route: null,
+        targetKey: "planning-add-recipe",
+        title: "Ajouter une recette",
+        content: "Ce bouton ouvre le sélecteur de recettes pour remplir un créneau.",
+      },
+      {
+        route: null,
+        targetKey: "planning-cook-button",
+        title: "Passer en cuisine",
+        content:
+          "Une fois la semaine planifiée, ce bouton réorganise tout en une séance de cuisine optimisée.",
+      },
+      {
+        route: "/liste-de-courses",
+        targetKey: "shopping-list-summary",
+        title: "Tout ce qu'il vous faut",
+        content: "Les ingrédients de toutes vos recettes de la semaine, regroupés et additionnés.",
+      },
+    ],
+  },
+  {
+    key: "techStepMetadata",
+    name: "Corriger les techniques d'une recette",
+    steps: [
+      {
+        route: null,
+        targetKey: "techstep-description",
+        title: "Les techniques repérées",
+        content:
+          "Les mots surlignés sont des techniques de cuisson détectées automatiquement. Sélectionnez un passage pour le corriger.",
+      },
+      {
+        route: null,
+        targetKey: "techstep-technique-picker",
+        title: "Choisir la bonne technique",
+        content:
+          "Indiquez la technique correcte pour le passage sélectionné — la correction est immédiate.",
+      },
+    ],
+  },
+];
+
 // The 14 allergens EU Regulation 1169/2011 (Annex II) requires food
 // businesses to declare — a standard, defensible reference list rather than
 // an invented one. Split into ALLERGY (classic IgE-mediated immune
@@ -1416,4 +1524,47 @@ export async function seedReferenceData(prisma: PrismaClient): Promise<void> {
   if (dietLinks.length > 0) {
     await prisma.ingredientDiet.createMany({ data: dietLinks, skipDuplicates: true });
   }
+
+  await seedTourScenarios(prisma);
+}
+
+/**
+ * Seeds the guided-tour reference data (issues #42/#44):
+ *
+ * - `TourTarget` rows — upserted by key with `update: { description }`, same
+ *   as `Unit` above: a reseed must correct an edited hint, not just skip.
+ * - `TourScenario` + its steps — **create-if-absent only**. Once a scenario
+ *   exists, an admin owns its `name`/`enabled`/steps (that's the whole
+ *   point of #44's CRUD), so a later deploy's reseed must never clobber
+ *   those. In the test suite every `resetDatabase()` truncates first, so
+ *   the defaults are always recreated fresh there.
+ */
+async function seedTourScenarios(prisma: PrismaClient): Promise<void> {
+  for (const { key, description } of TOUR_TARGETS) {
+    await prisma.tourTarget.upsert({
+      where: { key },
+      update: { description },
+      create: { key, description },
+    });
+  }
+
+  for (const { key, name, steps } of TOUR_SCENARIOS) {
+    const existing = await prisma.tourScenario.findUnique({ where: { key } });
+    if (existing) continue;
+    await prisma.tourScenario.create({
+      data: {
+        key,
+        name,
+        steps: {
+          create: steps.map((step, index) => ({
+            order: index,
+            route: step.route,
+            targetKey: step.targetKey,
+            title: step.title,
+            content: step.content,
+          })),
+        },
+      },
+    });
+  }
 }

apps/api/src/lib/analytics.service.ts

@@ -0,0 +1,65 @@
+import type { Prisma } from "@prisma/client";
+import { prisma } from "../db/prisma.js";
+import { logger } from "./logger.service.js";
+
+/** Who caused an {@link AnalyticsEvent}. `"user"` pairs with an `actorId` (`UserProfile.id`); `"system"` is a background job; `"anon"` is an unauthenticated request. */
+export type AnalyticsActorType = "user" | "system" | "anon";
+
+/** Optional context for {@link AnalyticsService.recordEvent}. */
+export interface RecordEventOptions {
+  /** `UserProfile.id` — set together with `actorType: "user"` (the default when this is present). */
+  actorId?: number;
+  /** Overrides the inferred actor type (`"user"` when `actorId` is set, else `"anon"`). */
+  actorType?: AnalyticsActorType;
+  /** Small free-form blob for later slicing (`{ sourceKey, recipeId, … }`) — nothing queries into it today. */
+  context?: Prisma.InputJsonValue;
+}
+
+/**
+ * Records product usage events for the admin dashboard's metrics (see the
+ * `AnalyticsEvent` model doc comment). A class rather than a bare function
+ * — same convention as `LoggerService`/`ErrorHandlerService`: `public`
+ * `recordEvent` is the API, `_insert` is the internal it fans out to.
+ *
+ * **Fire-and-forget by contract**: `recordEvent` returns `void`, not a
+ * promise. The insert runs detached, and a failure is logged at `warn` and
+ * swallowed — analytics must never add latency to, or fail, the request
+ * that triggered it. Call sites therefore never `await` it.
+ */
+export class AnalyticsService {
+  public recordEvent(type: string, options: RecordEventOptions = {}): void {
+    const actorType: AnalyticsActorType =
+      options.actorType ?? (options.actorId !== undefined ? "user" : "anon");
+
+    void this._insert(type, actorType, options).catch((err: unknown) => {
+      logger.warn("Analytics event insert failed", {
+        eventType: type,
+        error: err instanceof Error ? err.message : String(err),
+      });
+    });
+  }
+
+  private async _insert(
+    type: string,
+    actorType: AnalyticsActorType,
+    options: RecordEventOptions,
+  ): Promise<void> {
+    try {
+      await prisma.analyticsEvent.create({
+        data: {
+          type,
+          actorType,
+          actorId: options.actorId ?? null,
+          context: options.context,
+        },
+      });
+    } catch (err) {
+      // Rethrown so `recordEvent`'s `.catch` above logs it — this layer
+      // just isn't allowed a bare `await` per the repo's convention.
+      throw err;
+    }
+  }
+}
+
+/** Single shared instance — stateless, same reasoning as `logger`. */
+export const analytics = new AnalyticsService();

apps/api/src/lib/forgejo/forgejo.service.ts

@@ -0,0 +1,102 @@
+import { HttpError } from "@batch-cooking/error-tools";
+import { ErrorCode } from "@batch-cooking/shared";
+import { env } from "../../config/env.js";
+import { logger } from "../logger.service.js";
+
+/** The slice of Forgejo's `POST .../issues` response this integration reads. */
+interface ForgejoIssueResponse {
+  number: number;
+  html_url: string;
+}
+
+/**
+ * The one place `apps/api` talks to Forgejo — creating an issue from a
+ * contact message (`/admin/messages`, issue #81). A class + singleton
+ * (`forgejo` below), same convention as `logger` / `analytics`.
+ *
+ * **Fail-closed**: every method is a no-op / typed error unless all three
+ * `FORGEJO_*` env vars are set (see `config/env.ts`). Callers check
+ * {@link isConfigured} first and answer `503` themselves; {@link createIssue}
+ * re-checks as a backstop.
+ */
+export class ForgejoService {
+  /** True once `FORGEJO_BASE_URL`, `FORGEJO_TOKEN` and `FORGEJO_REPO` are all set. */
+  public isConfigured(): boolean {
+    return (
+      env.FORGEJO_BASE_URL !== undefined &&
+      env.FORGEJO_TOKEN !== undefined &&
+      env.FORGEJO_REPO !== undefined
+    );
+  }
+
+  /**
+   * Creates an issue in `FORGEJO_REPO` with the given title/body (no labels
+   * — a deliberate #81 decision, the admin adds them in Forgejo). Returns
+   * the new issue's number and html URL.
+   *
+   * @throws {HttpError} `503 FORGEJO_NOT_CONFIGURED` if the env isn't set,
+   *   `502 FORGEJO_REQUEST_FAILED` on a network error or any non-2xx / non-JSON
+   *   response — the caller leaves the database untouched in that case.
+   */
+  public async createIssue(input: {
+    title: string;
+    body: string;
+  }): Promise<{ number: number; htmlUrl: string }> {
+    if (!this.isConfigured()) {
+      throw new HttpError(
+        503,
+        ErrorCode.FORGEJO_NOT_CONFIGURED,
+        "Forgejo integration is not configured",
+      );
+    }
+    const url = `${env.FORGEJO_BASE_URL}/api/v1/repos/${env.FORGEJO_REPO}/issues`;
+
+    let response: Response;
+    try {
+      response = await fetch(url, {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+          // Forgejo/Gitea's PAT scheme — `token <pat>`, not `Bearer`.
+          Authorization: `token ${env.FORGEJO_TOKEN}`,
+        },
+        body: JSON.stringify({ title: input.title, body: input.body }),
+      });
+    } catch (err) {
+      logger.warn("Forgejo issue creation failed (network)", {
+        error: err instanceof Error ? err.message : String(err),
+      });
+      throw new HttpError(502, ErrorCode.FORGEJO_REQUEST_FAILED, "Forgejo request failed");
+    }
+
+    if (!response.ok) {
+      const detail = await response.text().catch(() => "");
+      logger.warn("Forgejo issue creation failed", {
+        status: response.status,
+        detail: detail.slice(0, 500),
+      });
+      throw new HttpError(
+        502,
+        ErrorCode.FORGEJO_REQUEST_FAILED,
+        `Forgejo issues API responded ${response.status}`,
+      );
+    }
+
+    try {
+      const data = (await response.json()) as ForgejoIssueResponse;
+      return { number: data.number, htmlUrl: data.html_url };
+    } catch (err) {
+      logger.warn("Forgejo issue creation failed (bad response)", {
+        error: err instanceof Error ? err.message : String(err),
+      });
+      throw new HttpError(
+        502,
+        ErrorCode.FORGEJO_REQUEST_FAILED,
+        "Forgejo response was not valid JSON",
+      );
+    }
+  }
+}
+
+/** Single shared instance — stateless, same reasoning as `logger` / `analytics`. */
+export const forgejo = new ForgejoService();

apps/api/src/lib/monitoring-broadcast.service.ts

@@ -0,0 +1,95 @@
+import type { MonitoringView } from "@batch-cooking/shared";
+import type { Server as SocketIoServer } from "socket.io";
+import { requireAdminSocket } from "../middlewares/require-admin-socket.js";
+import { getMonitoring } from "../modules/admin/admin-monitoring.service.js";
+import { logger } from "./logger.service.js";
+
+/** How often the server re-probes every dependency, in ms — see `MonitoringBroadcastService`. */
+const PROBE_INTERVAL_MS = 60_000;
+
+/** Every authenticated admin socket joins this one room — a single probe loop serves every open tab, instead of each polling independently. */
+const MONITORING_ROOM = "monitoring";
+
+/** Event name every `monitoring:update` push carries — the sole message this service ever emits. */
+const UPDATE_EVENT = "monitoring:update";
+
+/**
+ * Pushes the admin monitoring status board to every connected admin over
+ * WebSocket, replacing the old `GET /admin/api/monitoring` polling
+ * endpoint entirely (removed — see `admin.routes.ts`'s doc comment): one
+ * server-side probe loop, shared by every viewer, instead of each browser
+ * tab re-probing Postgres/the API/the intent-service/the LLM worker on its
+ * own timer.
+ *
+ * Owns the *whole* `socket.io` server passed to it (`io.use`, top-level
+ * `"connection"` handler) — fine while this is the server's only
+ * real-time feature; a second one added later should likely get its own
+ * namespace rather than share this room's connection handler.
+ */
+export class MonitoringBroadcastService {
+  private readonly _io: SocketIoServer;
+  /**
+   * Most recent probe result — replayed to a newly-joined admin
+   * immediately (see the `"connection"` handler below), so a freshly
+   * opened tab isn't left blank for up to a minute waiting for the next
+   * scheduled tick. `null` until the very first probe (kicked off by
+   * {@link start}) completes.
+   */
+  private _lastSnapshot: MonitoringView | null = null;
+  /** Handle for the running probe loop, or `null` before {@link start}/after {@link stop}. */
+  private _intervalHandle: NodeJS.Timeout | null = null;
+
+  public constructor(io: SocketIoServer) {
+    this._io = io;
+    this._io.use(requireAdminSocket);
+    this._io.on("connection", (socket) => {
+      void socket.join(MONITORING_ROOM);
+      if (this._lastSnapshot) {
+        socket.emit(UPDATE_EVENT, this._lastSnapshot);
+      }
+    });
+  }
+
+  /**
+   * Starts the probe loop: one immediate probe (so the very first admin
+   * to connect after a server restart doesn't wait a full minute), then
+   * every {@link PROBE_INTERVAL_MS}. Call once, at server boot
+   * (`server.ts`) — meant to run for the lifetime of the process, same
+   * posture as the tech-step worker's own cron (`server.ts` never calls
+   * {@link stop} today; the process exiting takes the interval with it).
+   */
+  public start(): void {
+    void this._tick();
+    this._intervalHandle = setInterval(() => void this._tick(), PROBE_INTERVAL_MS);
+  }
+
+  /**
+   * Stops the probe loop. Nothing in production calls this today — it
+   * exists so a graceful-shutdown hook could use it later, and so tests
+   * can tear an instance down cleanly instead of leaking a live
+   * `setInterval` past their own lifetime (which would otherwise hold the
+   * whole Mocha process open).
+   */
+  public stop(): void {
+    if (this._intervalHandle) {
+      clearInterval(this._intervalHandle);
+      this._intervalHandle = null;
+    }
+  }
+
+  /** Probes every dependency, caches the result, and broadcasts it to {@link MONITORING_ROOM}. */
+  private async _tick(): Promise<void> {
+    try {
+      this._lastSnapshot = await getMonitoring();
+      this._io.to(MONITORING_ROOM).emit(UPDATE_EVENT, this._lastSnapshot);
+    } catch (err) {
+      // getMonitoring() itself never rejects — every individual probe is
+      // already bounded/caught (see its own doc comment) — so this is
+      // purely defensive, per the repo's await-in-try/catch rule; not
+      // expected to actually fire.
+      logger.error("Monitoring probe tick failed unexpectedly", {
+        error: err instanceof Error ? err.message : String(err),
+      });
+    }
+  }
+}

apps/api/src/lib/recipe-matching/cooking-optimizer.ts

@@ -0,0 +1,734 @@
+import type {
+  CookingBackgroundTaskView,
+  CookingPhaseKind,
+  CookingPhaseNoteView,
+  CookingPhaseView,
+  CookingSessionRecipeRef,
+  CookingTaskIngredientView,
+  CookingTaskView,
+  CookingTemperatureView,
+  TechStepView,
+  UtensilView,
+} from "@batch-cooking/shared";
+
+/**
+ * The pure core of the "Calcul batch-cooking" module (`specs/batch-cooking-architecture.md`):
+ * takes the week's planned recipes — already resolved to reference views by
+ * `cooking-session.service.ts` — and reorganizes their steps into an ordered
+ * sequence of {@link CookingPhaseView}s that pools shared preparation and
+ * interleaves the recipes so passive cooks (simmer, braise, bake…) run in
+ * the background while the cook does active work from another recipe.
+ *
+ * Pure and synchronous, no database access — same `matchXxx()` pure /
+ * `loadXxx()` DB-backed split as `ingredient-matcher.ts` /
+ * `tech-step-matcher.ts` / `shopping-list.service.ts`'s
+ * `aggregateShoppingList`, so the whole optimization is unit-testable
+ * without a Postgres round-trip.
+ *
+ * Two families of work are *merged* across recipes:
+ * - **Preparation** — a `chop`/`peel`/… technique applied to the same
+ *   ingredient by two or more recipes, in a step that does nothing but
+ *   prep, collapses into one {@link CookingTaskView} of `kind:
+ *   "merged-prep"`.
+ * - **Setup** — the same `preheat`/`boil`/`bainMarie` action shared across
+ *   recipes collapses into one `kind: "merged-setup"` task, but *only when
+ *   the action metadata is compatible*: two recipes that both preheat the
+ *   oven merge only when they preheat it to the **same temperature**.
+ *   Two preheats at different temperatures stay separate (you cannot heat
+ *   one oven to two temperatures at once), are ordered coolest-first, and
+ *   the mise-en-place phase carries a {@link CookingPhaseNoteView} telling
+ *   the cook to run them in sequence.
+ *
+ * Cooking steps themselves are still never merged (no shared-oven bake
+ * batching yet); they're only *reordered* for parallelism.
+ */
+
+/**
+ * Technique keys (`TechStep.key`, see `reference-seed-data.ts`'s
+ * `TECH_STEPS`) that are pure knife/prep work on an ingredient — the only
+ * techniques v1 pools across recipes. A *step* counts as prep only when
+ * **every** technique it mentions is in here (see {@link isPurePrepStep}):
+ * "émincer les oignons" merges, "faire revenir les oignons émincés" does
+ * not (its `panFry` keeps it a cooking step).
+ */
+const PREP_TECHNIQUES: ReadonlySet<string> = new Set([
+  "chop",
+  "peel",
+  "mince",
+  "julienne",
+  "brunoise",
+  "concasse",
+  "paysanne",
+  "mirepoix",
+  "zest",
+  "score",
+  "pod",
+  "shellEgg",
+  "hollowOut",
+  "filet",
+  "disgorge",
+  "sift",
+  "dustWithFlour",
+  "peelBlanch",
+]);
+
+/**
+ * How much of the cook's attention a technique needs once it's under way —
+ * the axis that makes parallelism possible.
+ *
+ * - `"SETUP"` — a short active trigger, then it looks after itself: preheat
+ *   the oven, bring a pot of water to the boil. Pooled into the first
+ *   ("mise en place") phase so it's running before it's needed, and merged
+ *   across recipes when compatible (see {@link extractMergedSetup}).
+ * - `"PASSIVE"` — unattended once started (simmer, braise, bake, marinate,
+ *   rest…). Scheduled, then floated into every following phase's
+ *   `background` until the step that consumes it comes up.
+ * - anything not listed here, or a step with no detected technique at all,
+ *   is treated as `"ACTIVE"` — hands-on, occupies the cook.
+ */
+const SETUP_TECHNIQUES: ReadonlySet<string> = new Set(["preheat", "boil", "bainMarie"]);
+
+/** See {@link SETUP_TECHNIQUES}. */
+const PASSIVE_TECHNIQUES: ReadonlySet<string> = new Set([
+  "simmer",
+  "bake",
+  "roast",
+  "braise",
+  "marinate",
+  "rest",
+  "proof",
+  "confit",
+  "reduce",
+  "blindBake",
+  "compote",
+  "smother",
+  "setGel",
+  "pasteurize",
+  "appertize",
+  "poach",
+  "sweat",
+  "glaze",
+]);
+
+/** Attention class of a single step — see {@link SETUP_TECHNIQUES}. */
+type Attention = "SETUP" | "PASSIVE" | "ACTIVE";
+
+/** One technique occurrence within a step, already scaled to the planned portions. */
+interface OptimizerTechStepInput {
+  techStep: TechStepView;
+  order: number;
+  ingredients: CookingTaskIngredientView[];
+  utensils: UtensilView[];
+  /**
+   * Target temperature(s) named in this same clause (`preheat` → "à 180 °C").
+   * The structured subset only — see {@link CookingTemperatureView}. Not
+   * scaled (a temperature doesn't grow with the portion count). `[]` when
+   * the clause named no temperature.
+   */
+  temperatures: CookingTemperatureView[];
+}
+
+/** One recipe step, as handed to {@link optimizeCookingPlan}. */
+interface OptimizerStepInput {
+  stepId: number;
+  order: number;
+  description: string;
+  techSteps: OptimizerTechStepInput[];
+}
+
+/**
+ * One planned recipe, as handed to {@link optimizeCookingPlan}. `portions`
+ * is the planning slot's own count and `recipePortions` the recipe's
+ * as-written yield — quantities are scaled by `portions / recipePortions`
+ * (see {@link scaleOf}). The same recipe planned twice at different portion
+ * counts arrives as two entries with the same `recipeId`; that's
+ * intentional (two real cooking jobs), and merged-prep still pools their
+ * knife work back together.
+ */
+interface OptimizerRecipeInput {
+  recipeId: number;
+  name: string;
+  portions: number;
+  recipePortions: number;
+  steps: OptimizerStepInput[];
+}
+
+/** {@link optimizeCookingPlan}'s result — the date-range/legend wrapper is added by the service. */
+interface OptimizeCookingPlanResult {
+  recipes: CookingSessionRecipeRef[];
+  phases: CookingPhaseView[];
+}
+
+export type {
+  OptimizeCookingPlanResult,
+  OptimizerRecipeInput,
+  OptimizerStepInput,
+  OptimizerTechStepInput,
+};
+
+/** Portion scale factor for a recipe — guards a missing/zero as-written yield (bad data) by falling back to 1× rather than dividing by zero. */
+function scaleOf(recipe: OptimizerRecipeInput): number {
+  if (!recipe.recipePortions || recipe.recipePortions <= 0) return 1;
+  return recipe.portions / recipe.recipePortions;
+}
+
+/** A step normalized for scheduling — techniques scaled, attention resolved, ingredients/utensils/temperatures unioned across its technique clauses. */
+interface NormalizedStep {
+  /** Stable within one response: `step:<recipeIndex>:<stepId>` (the index disambiguates the same recipe planned twice). */
+  taskId: string;
+  recipeIndex: number;
+  recipe: CookingSessionRecipeRef;
+  stepId: number;
+  order: number;
+  description: string;
+  techSteps: OptimizerTechStepInput[];
+  attention: Attention;
+  isPurePrep: boolean;
+  /** Every technique in the step is a {@link SETUP_TECHNIQUES} one — eligible to pool via {@link extractMergedSetup}. */
+  isPureSetup: boolean;
+  dominantTechnique: TechStepView | null;
+  ingredients: CookingTaskIngredientView[];
+  utensils: UtensilView[];
+  /** Distinct target temperatures across the step's clauses (see {@link unionTemperatures}) — drives setup pooling and the coolest-first ordering. */
+  temperatures: CookingTemperatureView[];
+  /** Set once merged-prep/merged-setup extraction absorbs this step wholesale — it then produces no standalone task. */
+  absorbed: boolean;
+}
+
+/** Sums two ingredient lines only when it's unambiguous — same unit id and both quantities known; otherwise the pooled line carries no number (see `ShoppingListItemView`'s "don't guess a conversion" rule). */
+function poolIngredient(lines: CookingTaskIngredientView[]): {
+  quantity: number | null;
+  unit: CookingTaskIngredientView["unit"];
+} {
+  const first = lines[0];
+  if (!first) return { quantity: null, unit: null };
+  const unitId = first.unit?.id ?? null;
+  let total = 0;
+  for (const line of lines) {
+    if (line.quantity === null || (line.unit?.id ?? null) !== unitId) {
+      return { quantity: null, unit: null };
+    }
+    total += line.quantity;
+  }
+  return { quantity: total, unit: first.unit };
+}
+
+/** Unions ingredient lines by `(ingredientId, unitId)`, summing quantities within a group the same careful way as {@link poolIngredient}. */
+function unionIngredients(lines: CookingTaskIngredientView[]): CookingTaskIngredientView[] {
+  const groups = new Map<string, CookingTaskIngredientView[]>();
+  for (const line of lines) {
+    const key = `${line.ingredient.id}:${line.unit?.id ?? "x"}`;
+    const group = groups.get(key);
+    if (group) group.push(line);
+    else groups.set(key, [line]);
+  }
+  const out: CookingTaskIngredientView[] = [];
+  for (const group of groups.values()) {
+    const head = group[0];
+    if (!head) continue;
+    const pooled = poolIngredient(group);
+    out.push({ ingredient: head.ingredient, quantity: pooled.quantity, unit: pooled.unit });
+  }
+  return out.sort((a, b) => a.ingredient.key.localeCompare(b.ingredient.key));
+}
+
+/** Unions utensils by id, keeping a stable order by key. */
+function unionUtensils(utensils: UtensilView[]): UtensilView[] {
+  const byId = new Map<number, UtensilView>();
+  for (const utensil of utensils) byId.set(utensil.id, utensil);
+  return [...byId.values()].sort((a, b) => a.key.localeCompare(b.key));
+}
+
+/**
+ * A stable canonical string for one temperature — `c<°C>` / `g<gasMark>` /
+ * `q<level>`, or `""` when every field is null (shouldn't happen — the
+ * upstream extractor guarantees one non-null — but stays total). Two
+ * temperatures are "the same" iff their keys are equal: **no conversion**
+ * between °C, gas marks and qualitative levels is guessed for a merge
+ * decision (same "don't invent a conversion" stance as `ShoppingListItemView`
+ * on units). °C is rounded to the nearest degree so `180` and `180.00`
+ * (a `Decimal` artefact) collapse.
+ */
+function temperatureKey(temperature: CookingTemperatureView): string {
+  if (temperature.celsius !== null) return `c${Math.round(temperature.celsius)}`;
+  if (temperature.gasMark !== null) return `g${temperature.gasMark}`;
+  if (temperature.qualitative !== null) return `q${temperature.qualitative}`;
+  return "";
+}
+
+/** Unions temperatures by {@link temperatureKey}, keeping a stable order by that key. */
+function unionTemperatures(temperatures: CookingTemperatureView[]): CookingTemperatureView[] {
+  const byKey = new Map<string, CookingTemperatureView>();
+  for (const temperature of temperatures) byKey.set(temperatureKey(temperature), temperature);
+  return [...byKey.entries()].sort(([a], [b]) => a.localeCompare(b)).map(([, value]) => value);
+}
+
+/**
+ * A single number to *order* temperatures by (coolest first) — **never** used
+ * to decide a merge (that's {@link temperatureKey}, exact-match only). Gas
+ * marks map via the French `th × 30 ≈ °C` convention and qualitative levels
+ * via rough midpoints, purely so a mixed list still sorts sensibly; a
+ * temperature-less task sorts first.
+ */
+function comparableTemp(temperature: CookingTemperatureView): number {
+  if (temperature.celsius !== null) return temperature.celsius;
+  if (temperature.gasMark !== null) return temperature.gasMark * 30;
+  if (temperature.qualitative !== null) {
+    return { low: 120, medium: 180, high: 240 }[temperature.qualitative];
+  }
+  return Number.NEGATIVE_INFINITY;
+}
+
+/** A setup task's sort position (coolest first) — its lowest target, or "before everything" when it has no detected temperature. */
+function setupTaskTemp(task: CookingTaskView): number {
+  if (task.temperatures.length === 0) return Number.NEGATIVE_INFINITY;
+  return Math.min(...task.temperatures.map(comparableTemp));
+}
+
+/** A step is pure prep only if it has techniques and every one of them is in {@link PREP_TECHNIQUES}. */
+function isPurePrepStep(techSteps: OptimizerTechStepInput[]): boolean {
+  return techSteps.length > 0 && techSteps.every((ts) => PREP_TECHNIQUES.has(ts.techStep.key));
+}
+
+/** A step is pure setup only if it has techniques and every one is in {@link SETUP_TECHNIQUES} — mirror of {@link isPurePrepStep}. */
+function isPureSetupStep(techSteps: OptimizerTechStepInput[]): boolean {
+  return techSteps.length > 0 && techSteps.every((ts) => SETUP_TECHNIQUES.has(ts.techStep.key));
+}
+
+/** Resolves a step's {@link Attention} — SETUP wins, then a *trailing* passive technique, else ACTIVE (see {@link SETUP_TECHNIQUES}). */
+function attentionOf(techSteps: OptimizerTechStepInput[]): Attention {
+  if (techSteps.some((ts) => SETUP_TECHNIQUES.has(ts.techStep.key))) return "SETUP";
+  const last = techSteps[techSteps.length - 1];
+  if (last && PASSIVE_TECHNIQUES.has(last.techStep.key)) return "PASSIVE";
+  return "ACTIVE";
+}
+
+/** Turns one recipe's raw steps into {@link NormalizedStep}s — scales quantities, resolves attention, unions per-clause ingredients/utensils up to the step. */
+function normalizeRecipe(recipe: OptimizerRecipeInput, recipeIndex: number): NormalizedStep[] {
+  const scale = scaleOf(recipe);
+  const recipeRef: CookingSessionRecipeRef = {
+    recipeId: recipe.recipeId,
+    name: recipe.name,
+    portions: recipe.portions,
+  };
+
+  return [...recipe.steps]
+    .sort((a, b) => a.order - b.order)
+    .map((step) => {
+      const techSteps: OptimizerTechStepInput[] = [...step.techSteps]
+        .sort((a, b) => a.order - b.order)
+        .map((ts) => ({
+          techStep: ts.techStep,
+          order: ts.order,
+          ingredients: ts.ingredients.map((line) => ({
+            ingredient: line.ingredient,
+            quantity: line.quantity === null ? null : line.quantity * scale,
+            unit: line.unit,
+          })),
+          utensils: ts.utensils,
+          // Temperatures are not scaled — an oven set to 180 °C for 4
+          // portions is still 180 °C for 8.
+          temperatures: ts.temperatures,
+        }));
+
+      const lastTech = techSteps[techSteps.length - 1];
+      return {
+        taskId: `step:${recipeIndex}:${step.stepId}`,
+        recipeIndex,
+        recipe: recipeRef,
+        stepId: step.stepId,
+        order: step.order,
+        description: step.description,
+        techSteps,
+        attention: attentionOf(techSteps),
+        isPurePrep: isPurePrepStep(techSteps),
+        isPureSetup: isPureSetupStep(techSteps),
+        dominantTechnique: lastTech ? lastTech.techStep : null,
+        ingredients: unionIngredients(techSteps.flatMap((ts) => ts.ingredients)),
+        utensils: unionUtensils(techSteps.flatMap((ts) => ts.utensils)),
+        temperatures: unionTemperatures(techSteps.flatMap((ts) => ts.temperatures)),
+        absorbed: false,
+      } satisfies NormalizedStep;
+    });
+}
+
+/** The prep signature of a pure-prep step — sorted `<techniqueKey>:<ingredientId>` pairs; two steps with the same signature do identical knife work and can be pooled. */
+function prepSignature(step: NormalizedStep): string {
+  const pairs: string[] = [];
+  for (const ts of step.techSteps) {
+    for (const line of ts.ingredients) {
+      pairs.push(`${ts.techStep.key}:${line.ingredient.id}`);
+    }
+  }
+  return [...new Set(pairs)].sort().join("+");
+}
+
+/**
+ * The setup signature of a pure-setup step — `<sorted technique keys>|<sorted
+ * temperature keys>`. Two steps with the same signature start the *same*
+ * appliance in the *same* state and can be pooled. The temperature part is
+ * `""` when no temperature was detected, which is a valid signature: two
+ * bare "préchauffer le four" steps then share it and merge (the optimistic
+ * default — an unknown temperature is assumed compatible). The appliance
+ * itself is deliberately not in the key (a `preheat` is the oven either
+ * way); its utensils are still unioned onto the pooled task.
+ */
+function setupSignature(step: NormalizedStep): string {
+  const techKeys = [...new Set(step.techSteps.map((ts) => ts.techStep.key))].sort().join("+");
+  const tempKeys = step.temperatures
+    .map(temperatureKey)
+    .filter((key) => key !== "")
+    .sort()
+    .join("+");
+  return `${techKeys}|${tempKeys}`;
+}
+
+/** Builds one {@link CookingTaskView} from a normalized step run as written. */
+function stepToTask(step: NormalizedStep): CookingTaskView {
+  return {
+    id: step.taskId,
+    kind: "step",
+    technique: step.dominantTechnique,
+    description: step.description,
+    ingredients: step.ingredients,
+    utensils: step.utensils,
+    // Only a setup step (preheat/boil/…) carries a target temperature the
+    // plan should reason about; every other step leaves it `[]` even if its
+    // text happens to mention degrees.
+    temperatures: step.attention === "SETUP" ? step.temperatures : [],
+    sourceRecipes: [step.recipe],
+    originalSteps: [
+      {
+        recipeId: step.recipe.recipeId,
+        recipeName: step.recipe.name,
+        description: step.description,
+      },
+    ],
+  };
+}
+
+/** Builds the running-in-the-background status line for a passive step already scheduled in an earlier phase. */
+function stepToBackground(step: NormalizedStep): CookingBackgroundTaskView {
+  return {
+    id: `bg:${step.taskId}`,
+    technique: step.dominantTechnique,
+    description: step.description,
+    recipeId: step.recipe.recipeId,
+    recipeName: step.recipe.name,
+  };
+}
+
+/**
+ * Pools pure-prep steps that do the *exact same* knife work (same
+ * {@link prepSignature}) in two or more distinct recipes into one
+ * `merged-prep` {@link CookingTaskView}, and marks every contributing step
+ * `absorbed` so it produces no standalone task. A pure-prep step whose
+ * signature is unique (only one recipe needs it) is left untouched — it
+ * still lands in the mise-en-place phase, just as its own step task.
+ *
+ * Returns the merged tasks in a stable order (by id).
+ */
+function extractMergedPrep(steps: NormalizedStep[]): CookingTaskView[] {
+  const bySignature = new Map<string, NormalizedStep[]>();
+  for (const step of steps) {
+    if (!step.isPurePrep) continue;
+    const signature = prepSignature(step);
+    if (signature === "") continue;
+    const group = bySignature.get(signature);
+    if (group) group.push(step);
+    else bySignature.set(signature, [step]);
+  }
+
+  const merged: CookingTaskView[] = [];
+  for (const [signature, group] of bySignature) {
+    const recipeIndexes = new Set(group.map((s) => s.recipeIndex));
+    if (recipeIndexes.size < 2) continue;
+
+    for (const step of group) step.absorbed = true;
+
+    // Every contributing clause's ingredient lines, pooled per ingredient.
+    const allLines = group.flatMap((s) => s.techSteps.flatMap((ts) => ts.ingredients));
+    const ingredients = unionIngredients(allLines);
+    const utensils = unionUtensils(group.flatMap((s) => s.utensils));
+
+    // Dominant technique of the pool = the first pair's technique (v1
+    // signatures are almost always a single `<technique>:<ingredient>`
+    // pair; a multi-pair signature just takes the earliest).
+    const firstTech = group[0]?.techSteps[0]?.techStep ?? null;
+    const firstIngredientKey = ingredients[0]?.ingredient.key ?? signature;
+
+    // Distinct source recipes / original step texts, in input order.
+    const sourceRecipes: CookingSessionRecipeRef[] = [];
+    const seenRecipe = new Set<number>();
+    const originalSteps: CookingTaskView["originalSteps"] = [];
+    for (const step of [...group].sort((a, b) => a.recipeIndex - b.recipeIndex)) {
+      if (!seenRecipe.has(step.recipeIndex)) {
+        seenRecipe.add(step.recipeIndex);
+        sourceRecipes.push(step.recipe);
+      }
+      originalSteps.push({
+        recipeId: step.recipe.recipeId,
+        recipeName: step.recipe.name,
+        description: step.description,
+      });
+    }
+
+    merged.push({
+      id: `prep:${firstTech ? firstTech.key : "prep"}:${firstIngredientKey}`,
+      kind: "merged-prep",
+      technique: firstTech,
+      description: null,
+      ingredients,
+      utensils,
+      temperatures: [],
+      sourceRecipes,
+      originalSteps,
+    });
+  }
+
+  return merged.sort((a, b) => a.id.localeCompare(b.id));
+}
+
+/**
+ * Pools pure-setup steps with the same {@link setupSignature} (same action,
+ * same detected temperature) across two or more distinct recipes into one
+ * `merged-setup` {@link CookingTaskView}, marking each contributing step
+ * `absorbed`. Two `preheat` steps at *different* temperatures have different
+ * signatures and are therefore never pooled — {@link detectApplianceTemperatureConflicts}
+ * turns that into a phase note. A signature only one recipe needs is left
+ * untouched (still lands in mise-en-place as its own step task).
+ *
+ * Returns the merged tasks sorted by id.
+ */
+function extractMergedSetup(steps: NormalizedStep[]): CookingTaskView[] {
+  const bySignature = new Map<string, NormalizedStep[]>();
+  for (const step of steps) {
+    if (!step.isPureSetup) continue;
+    const signature = setupSignature(step);
+    const group = bySignature.get(signature);
+    if (group) group.push(step);
+    else bySignature.set(signature, [step]);
+  }
+
+  const merged: CookingTaskView[] = [];
+  for (const group of bySignature.values()) {
+    const recipeIndexes = new Set(group.map((s) => s.recipeIndex));
+    if (recipeIndexes.size < 2) continue;
+
+    for (const step of group) step.absorbed = true;
+
+    const firstTech = group[0]?.techSteps[0]?.techStep ?? null;
+    const ingredients = unionIngredients(
+      group.flatMap((s) => s.techSteps.flatMap((ts) => ts.ingredients)),
+    );
+    const utensils = unionUtensils(group.flatMap((s) => s.utensils));
+    const temperatures = unionTemperatures(group.flatMap((s) => s.temperatures)).sort(
+      (a, b) => comparableTemp(a) - comparableTemp(b),
+    );
+
+    // Distinct source recipes / original step texts, in input order.
+    const sourceRecipes: CookingSessionRecipeRef[] = [];
+    const seenRecipe = new Set<number>();
+    const originalSteps: CookingTaskView["originalSteps"] = [];
+    for (const step of [...group].sort((a, b) => a.recipeIndex - b.recipeIndex)) {
+      if (!seenRecipe.has(step.recipeIndex)) {
+        seenRecipe.add(step.recipeIndex);
+        sourceRecipes.push(step.recipe);
+      }
+      originalSteps.push({
+        recipeId: step.recipe.recipeId,
+        recipeName: step.recipe.name,
+        description: step.description,
+      });
+    }
+
+    const tempKey = temperatures.map(temperatureKey).join("+");
+    merged.push({
+      id: `setup:${firstTech ? firstTech.key : "setup"}:${tempKey || "any"}`,
+      kind: "merged-setup",
+      technique: firstTech,
+      description: null,
+      ingredients,
+      utensils,
+      temperatures,
+      sourceRecipes,
+      originalSteps,
+    });
+  }
+
+  return merged.sort((a, b) => a.id.localeCompare(b.id));
+}
+
+/**
+ * The kitchen has one oven: if the mise-en-place ends up with two or more
+ * `preheat` tasks at *distinct known* temperatures, they cannot run at once.
+ * Emits a single {@link CookingPhaseNoteView} listing those temperatures
+ * coolest-first so the web layer can say "enchaîner 180 °C puis 210 °C".
+ * A `preheat` with no detected temperature contributes nothing to the note
+ * (it merged optimistically with the other unknowns and we've no number to
+ * show).
+ */
+function detectApplianceTemperatureConflicts(
+  setupTasks: CookingTaskView[],
+): CookingPhaseNoteView[] {
+  const preheats = setupTasks.filter((task) => task.technique?.key === "preheat");
+  const distinct = unionTemperatures(preheats.flatMap((task) => task.temperatures))
+    .filter((temperature) => temperatureKey(temperature) !== "")
+    .sort((a, b) => comparableTemp(a) - comparableTemp(b));
+
+  const technique = preheats.find((task) => task.technique !== null)?.technique;
+  if (distinct.length < 2 || !technique) return [];
+
+  return [{ kind: "appliance-temperature-conflict", technique, temperatures: distinct }];
+}
+
+/** Maps the input recipe list to its display legend, de-duplicating an exact `(recipeId, portions)` repeat. */
+function toRecipeLegend(recipes: OptimizerRecipeInput[]): CookingSessionRecipeRef[] {
+  const seen = new Set<string>();
+  const out: CookingSessionRecipeRef[] = [];
+  for (const recipe of recipes) {
+    const key = `${recipe.recipeId}:${recipe.portions}`;
+    if (seen.has(key)) continue;
+    seen.add(key);
+    out.push({ recipeId: recipe.recipeId, name: recipe.name, portions: recipe.portions });
+  }
+  return out;
+}
+
+/** A phase is `"finishing"` when everything left in it is plating; otherwise it's a normal `"cooking"` phase. */
+function cookingPhaseKind(tasks: CookingTaskView[]): CookingPhaseKind {
+  return tasks.every((task) => task.technique?.key === "plate") ? "finishing" : "cooking";
+}
+
+/**
+ * See the file header. Given the week's planned recipes (already resolved
+ * to reference views), returns the display legend plus the ordered phases:
+ *
+ * 1. **Mise en place** (`"mise-en-place"`) — all prep first (`merged-prep`
+ *    tasks, then leftover pure-prep steps), then all setup (`merged-setup`
+ *    tasks and leftover `SETUP` steps, ordered coolest-first). Carries an
+ *    `appliance-temperature-conflict` note when the week needs the oven at
+ *    two or more temperatures. Omitted entirely if it would be empty.
+ * 2. **Cooking** (`"cooking"` / `"finishing"`) — the recipes interleaved:
+ *    each phase pops the next remaining step of every recipe that still has
+ *    one (passive-cook steps first, so long cooks start early). A passive
+ *    step scheduled in one phase is echoed in every later phase's
+ *    `background` until that recipe's next step is popped.
+ */
+export function optimizeCookingPlan(recipes: OptimizerRecipeInput[]): OptimizeCookingPlanResult {
+  const legend = toRecipeLegend(recipes);
+  const normalized = recipes.map((recipe, index) => normalizeRecipe(recipe, index));
+  const allSteps = normalized.flat();
+
+  // Merged-prep first, then merged-setup — each marks its contributing
+  // steps `absorbed`, so the leftover loop below only sees the solo ones.
+  const mergedPrep = extractMergedPrep(allSteps);
+  const mergedSetup = extractMergedSetup(allSteps);
+
+  const phases: CookingPhaseView[] = [];
+
+  // Phase 0 — mise en place: all prep, then all setup. Keeping the two
+  // groups apart (rather than input order) lets the setup group be ordered
+  // coolest-first without disturbing the prep order.
+  const prepTasks: CookingTaskView[] = [...mergedPrep];
+  const setupTasks: CookingTaskView[] = [...mergedSetup];
+  for (const step of allSteps) {
+    if (step.absorbed) continue;
+    if (step.isPurePrep) {
+      prepTasks.push(stepToTask(step));
+      step.absorbed = true; // consumed here, not again in the cooking loop
+    } else if (step.attention === "SETUP") {
+      setupTasks.push(stepToTask(step));
+      step.absorbed = true;
+    }
+  }
+  // Coolest oven first, so a temperature conflict reads "180 °C puis 210 °C";
+  // `id` as a stable tiebreaker keeps the plan deterministic.
+  setupTasks.sort((a, b) => setupTaskTemp(a) - setupTaskTemp(b) || a.id.localeCompare(b.id));
+
+  const miseTasks = [...prepTasks, ...setupTasks];
+  if (miseTasks.length > 0) {
+    phases.push({
+      index: 0,
+      kind: "mise-en-place",
+      tasks: miseTasks,
+      background: [],
+      notes: detectApplianceTemperatureConflicts(setupTasks),
+    });
+  }
+
+  // Cooking phases — one "next step of each recipe" per phase. `hold` keeps
+  // a recipe out of the *next* phase right after it starts a passive cook,
+  // so another recipe's active work fills that phase and the passive cook
+  // shows up as `background` there instead of being immediately followed by
+  // its own next step.
+  const queues = normalized.map((steps) => ({
+    remaining: steps.filter((s) => !s.absorbed),
+    cursor: 0,
+    hold: 0,
+  }));
+  /** Passive steps started in an earlier phase, keyed by recipe index, still "cooking". */
+  const runningPassive = new Map<number, NormalizedStep>();
+
+  while (queues.some((queue) => queue.cursor < queue.remaining.length)) {
+    const phaseSteps: NormalizedStep[] = [];
+    queues.forEach((queue, recipeIndex) => {
+      const next = queue.remaining[queue.cursor];
+      if (!next) return;
+      if (queue.hold > 0) {
+        // Still tending its passive cook this phase — leave it in
+        // `runningPassive` so it renders as background, don't advance.
+        queue.hold--;
+        return;
+      }
+      // This recipe is advancing — whatever passive cook it had going is
+      // now being tended to, so it stops showing as background.
+      runningPassive.delete(recipeIndex);
+      phaseSteps.push(next);
+      queue.cursor++;
+    });
+
+    // Every recipe with steps left is holding on a passive cook — break the
+    // stall by releasing all holds and letting the next iteration advance.
+    if (phaseSteps.length === 0) {
+      for (const queue of queues) queue.hold = 0;
+      continue;
+    }
+
+    // Background = passive cooks from earlier phases not yet resolved above.
+    const background = [...runningPassive.values()].map(stepToBackground);
+
+    // Start the long cooks first within the phase.
+    phaseSteps.sort((a, b) => {
+      const rank = (s: NormalizedStep) => (s.attention === "PASSIVE" ? 0 : 1);
+      return rank(a) - rank(b) || a.recipeIndex - b.recipeIndex;
+    });
+
+    const tasks = phaseSteps.map(stepToTask);
+    phases.push({
+      index: phases.length,
+      kind: cookingPhaseKind(tasks),
+      tasks,
+      background,
+      // Temperature conflicts only matter in mise-en-place, where all the
+      // preheats live; a cooking phase never carries a note today.
+      notes: [],
+    });
+
+    for (const step of phaseSteps) {
+      if (step.attention === "PASSIVE") {
+        runningPassive.set(step.recipeIndex, step);
+        const queue = queues[step.recipeIndex];
+        if (queue) queue.hold = 1;
+      }
+    }
+  }
+
+  // `index` was set from `phases.length` as we went; re-stamp so it always
+  // matches the final array position even if phase 0 was skipped.
+  phases.forEach((phase, index) => {
+    phase.index = index;
+  });
+
+  return { recipes: legend, phases };
+}

apps/api/src/lib/recipe-matching/ingredient-matcher.ts

@@ -427,6 +427,11 @@ export async function loadIngredientCatalog(locale = "en"): Promise<IngredientMa
     const labels = INGREDIENT_LABELS_BY_LOCALE[locale] ?? {};
     const synonyms = INGREDIENT_LABEL_SYNONYMS_BY_LOCALE[locale] ?? {};
     const ingredients = await prisma.ingredient.findMany({
+      // Placeholder rows (user free-text, `placeholder:<uuid>` key) have no
+      // authored label so they'd be skipped by the `label === undefined`
+      // check below anyway — filtered here too so an import never even
+      // considers resolving one raw line to another line's placeholder.
+      where: { isPlaceholder: false },
       select: { id: true, key: true },
     });
     const catalog: IngredientMatchEntry[] = [];

apps/api/src/lib/recipe-matching/intent-service-client.ts

@@ -25,11 +25,28 @@ export interface IntentServiceEntity {
   kind: "technique" | "utensil";
 }
 
-/** The full result of a `POST /v1/process` call — mirrors `ProcessResponse` (Python `schemas.py`). `intent` is `null` only when `locale` isn't one this service trains for, or `text` is blank; otherwise always a real `uid` (the Python service's `textcat` has no "None" sentinel, unlike node-nlp — see that service's README). */
+/**
+ * A temperature the service recognized in the text — mirrors
+ * `TemperaturePayload` (Python `schemas.py`), `gas_mark` camelCased to
+ * `gasMark`. A separate list from {@link IntentServiceEntity} (not another
+ * `kind`) because it carries structured fields that don't fit an entity's
+ * `uid`. At least one of `celsius` / `gasMark` / `qualitative` is non-null.
+ */
+export interface IntentServiceTemperature {
+  start: number;
+  end: number;
+  celsius: number | null;
+  gasMark: number | null;
+  qualitative: "low" | "medium" | "high" | null;
+  raw: string;
+}
+
+/** The full result of a `POST /v1/process` call — mirrors `ProcessResponse` (Python `schemas.py`). `intent` is `null` only when `locale` isn't one this service trains for, or `text` is blank; otherwise always a real `uid` (the Python service's `textcat` has no "None" sentinel, unlike node-nlp — see that service's README). `temperatures` is regex-extracted and independent of the model/training (empty when none, not omitted). */
 export interface IntentServiceProcessResult {
   entities: IntentServiceEntity[];
   intent: string | null;
   score: number;
+  temperatures: IntentServiceTemperature[];
 }
 
 /**
@@ -88,10 +105,26 @@ export class IntentServiceClient {
    */
   public async process(locale: string, text: string): Promise<IntentServiceProcessResult> {
     try {
-      return await this._request("/v1/process", {
+      // The wire shape uses `gas_mark` (Python field name); everything else
+      // is already camelCase / single-word. Map that one key at the
+      // boundary so the rest of `apps/api` only ever sees `gasMark`.
+      const wire = await this._request<
+        Omit<IntentServiceProcessResult, "temperatures"> & {
+          temperatures: (Omit<IntentServiceTemperature, "gasMark"> & { gas_mark: number | null })[];
+        }
+      >("/v1/process", {
         method: "POST",
         body: JSON.stringify({ locale, text }),
       });
+      return {
+        entities: wire.entities,
+        intent: wire.intent,
+        score: wire.score,
+        temperatures: (wire.temperatures ?? []).map(({ gas_mark, ...rest }) => ({
+          ...rest,
+          gasMark: gas_mark,
+        })),
+      };
     } catch (err) {
       throw err;
     }

apps/api/src/lib/recipe-matching/tech-step-matcher.ts

@@ -5,7 +5,7 @@ import {
   loadIngredientCatalog,
   loadUnitCatalog,
 } from "./ingredient-matcher.js";
-import { intentServiceClient } from "./intent-service-client.js";
+import { type IntentServiceTemperature, intentServiceClient } from "./intent-service-client.js";
 
 /**
  * Auto-detects which cooking techniques (`TechStep`) a free-text recipe
@@ -114,6 +114,7 @@ export interface TechStepMatch {
   contextEnd: number;
   ingredients: IngredientMention[];
   utensils: UtensilMention[];
+  temperatures: TemperatureMention[];
 }
 
 /**
@@ -129,6 +130,15 @@ export interface UtensilMention {
   end: number;
 }
 
+/**
+ * A temperature the intent service's regex pass found (`temperatures` in
+ * `IntentServiceProcessResult`), attributed to whichever clause its span
+ * falls inside — same rule as {@link UtensilMention}. No DB id to resolve
+ * (unlike a technique/ingredient/utensil): the structured value *is* the
+ * data. Persisted verbatim as a `StepTechStepTemperature` row.
+ */
+export type TemperatureMention = IntentServiceTemperature;
+
 /** A candidate technique mention found by NER — the raw material {@link splitIntoClauses} cuts a description around. */
 export interface TechniqueCandidate {
   /** Training-data `uid` this candidate's synonym belongs to (e.g. `"melt"`) — not yet resolved to a DB id at this stage. */
@@ -408,6 +418,7 @@ export class TechStepClassifierService {
         .filter((entity) => entity.kind === "technique")
         .map((entity) => ({ uid: entity.uid, start: entity.start, end: entity.end }));
       const utensilEntities = nerResult.entities.filter((entity) => entity.kind === "utensil");
+      const temperatureMentions = nerResult.temperatures;
 
       const clauses = splitIntoClauses(description, candidates);
       const matches: TechStepMatch[] = [];
@@ -442,6 +453,12 @@ export class TechStepClassifierService {
             : [{ utensilId, start: entity.start, end: entity.end }];
         });
 
+        // Temperatures carry no id to resolve — kept as-is, just attributed
+        // to the clause whose span contains them (same rule as utensils).
+        const temperatures: TemperatureMention[] = temperatureMentions.filter(
+          (temp) => temp.start >= clause.start && temp.end <= clause.end,
+        );
+
         matches.push({
           techStepId,
           start: span.start,
@@ -450,6 +467,7 @@ export class TechStepClassifierService {
           contextEnd: clause.end,
           ingredients,
           utensils,
+          temperatures,
         });
       }
 

apps/api/src/lib/recipe-matching/tech-step-persistence.ts

@@ -0,0 +1,64 @@
+import type { Prisma } from "@prisma/client";
+import type { TechStepMatch } from "./tech-step-matcher.js";
+
+/**
+ * Turns one step's {@link TechStepMatch}es into the Prisma nested-`create`
+ * payload for its `techSteps` relation — the technique row **and** all three
+ * of its clause-metadata child sets (`ingredients` / `utensils` /
+ * `temperatures`).
+ *
+ * The single source of truth for that shape. It used to be written out by
+ * hand in three places — `recipe.service.ts`'s `createRecipeInternal` and
+ * `updateRecipe`, plus `src/scripts/backfill-tech-steps.ts` — and they had
+ * drifted: only the create path wrote the metadata children, so **every
+ * recipe resaved through the UI, and every recipe the backfill touched,
+ * silently lost every ingredient / utensil / temperature the classifier had
+ * attributed to its steps**. That left `cooking-optimizer.ts`'s
+ * temperature-aware `preheat` grouping (the "don't preheat to 150 °C and
+ * 200 °C at once" note) with no data to work from on any recipe that wasn't
+ * a pristine, never-edited import. Building the payload once, here, is what
+ * stops the three call sites diverging again.
+ *
+ * `order` is each match's index in `matches` (0-based). Callers pass matches
+ * in reading order already; a caller that needs a different base (the
+ * backfill, which offsets past untouched `"manual"` rows) overrides `order`
+ * on the returned objects before handing them to Prisma.
+ */
+export function toStepTechStepCreateInputs(
+  matches: TechStepMatch[],
+): Prisma.StepTechStepUncheckedCreateWithoutStepInput[] {
+  return matches.map((match, order) => ({
+    techStepId: match.techStepId,
+    start: match.start,
+    end: match.end,
+    contextStart: match.contextStart,
+    contextEnd: match.contextEnd,
+    order,
+    ingredients: {
+      create: match.ingredients.map((ingredient) => ({
+        ingredientId: ingredient.ingredientId,
+        quantity: ingredient.quantity,
+        unitId: ingredient.unitId,
+        start: ingredient.start,
+        end: ingredient.end,
+      })),
+    },
+    utensils: {
+      create: match.utensils.map((utensil) => ({
+        utensilId: utensil.utensilId,
+        start: utensil.start,
+        end: utensil.end,
+      })),
+    },
+    temperatures: {
+      create: match.temperatures.map((temperature) => ({
+        start: temperature.start,
+        end: temperature.end,
+        celsius: temperature.celsius,
+        gasMark: temperature.gasMark,
+        qualitative: temperature.qualitative,
+        raw: temperature.raw,
+      })),
+    },
+  }));
+}

apps/api/src/middlewares/require-admin-socket.ts

@@ -0,0 +1,43 @@
+import { parseCookie } from "cookie";
+import type { Socket } from "socket.io";
+import { env } from "../config/env.js";
+import { resolveAdminFromToken } from "./require-admin.js";
+
+/**
+ * `socket.io` handshake middleware guarding the admin WebSocket surface —
+ * the connection-level equivalent of {@link requireAdmin} (`require-
+ * admin.ts`). A `socket.io` handshake is a plain HTTP request that never
+ * runs through Express's own middleware stack (`cookie-parser` included),
+ * so the raw `Cookie` header has to be parsed by hand here with the
+ * `cookie` package (the same one `cookie-parser` itself wraps).
+ *
+ * Registered via `io.use(requireAdminSocket)` — `socket.io` calls every
+ * `io.use` middleware once per connection attempt, before `"connection"`
+ * fires, exactly like Express's per-request middleware chain. Calling
+ * `next()` with no argument admits the connection; calling it with an
+ * `Error` rejects it, which the client sees as a `connect_error` event
+ * (`socket.io-client` never even fires `"connect"` for it).
+ *
+ * On success, stashes the resolved admin on `socket.data.adminUser` —
+ * `socket.io`'s per-connection storage bag, the WebSocket equivalent of
+ * `res.locals` — for any handler that ends up needing it later.
+ */
+export async function requireAdminSocket(
+  socket: Socket,
+  next: (err?: Error) => void,
+): Promise<void> {
+  try {
+    const cookieHeader = socket.handshake.headers.cookie;
+    const token = cookieHeader ? parseCookie(cookieHeader)[env.ADMIN_COOKIE_NAME] : undefined;
+    if (typeof token !== "string") {
+      throw new Error("Not authenticated");
+    }
+
+    socket.data.adminUser = await resolveAdminFromToken(token);
+    next();
+  } catch {
+    // Covers everything resolveAdminFromToken can throw, plus a missing
+    // cookie — same "never distinguish the reason" posture as requireAdmin.
+    next(new Error("Not authenticated"));
+  }
+}

apps/api/src/middlewares/require-admin.ts

@@ -19,26 +19,50 @@ export interface AdminLocals {
 }
 
 /**
- * Express middleware guarding every `/admin/*` route — the operations app
+ * Verifies an admin session JWT and resolves the `AdminUser` it belongs
- * (`apps/admin-web`) authenticating as an `AdminUser`. Reads the admin
+ * to — the transport-agnostic core both {@link requireAdmin} (HTTP) and
- * session cookie (`ADMIN_COOKIE_NAME`, deliberately **not** the same cookie
+ * `requireAdminSocket` (`require-admin-socket.ts`, the WebSocket handshake
- * as end-user sessions), verifies the JWT against `ADMIN_JWT_SECRET`
+ * equivalent) build on; they only differ in *where* they read the raw
- * (a different secret than `JWT_SECRET`), and re-checks `tokenVersion`
+ * cookie value from (`req.cookies`, already parsed by `cookie-parser`, vs
- * against the database so a stateless JWT can still be invalidated
+ * a `socket.io` handshake's raw `Cookie` header, which isn't). Kept here
- * server-side.
+ * rather than in `lib/admin-jwt.ts`, since it also does the DB
+ * `tokenVersion` re-check that file deliberately doesn't know about.
+ *
+ * @throws {Error} for any failure — malformed/expired JWT, unknown admin,
+ *   stale `tokenVersion`, or no `ADMIN_JWT_SECRET` configured (from
+ *   {@link verifyAdminToken}). Always the same generic message; callers
+ *   map it to their own transport's "unauthenticated" shape.
+ */
+export async function resolveAdminFromToken(token: string): Promise<AdminUserView> {
+  const payload = verifyAdminToken(token);
+  const admin = await prisma.adminUser.findUnique({ where: { id: payload.adminUserId } });
+
+  if (!admin || admin.tokenVersion !== payload.tokenVersion) {
+    throw new Error("Not authenticated");
+  }
+
+  return toSafeAdmin(admin);
+}
+
+/**
+ * Express middleware guarding every `/admin/api/*` route — the operations
+ * UI (`apps/web`'s `/admin/*` pages) authenticating as an `AdminUser`.
+ * Reads the admin session cookie (`ADMIN_COOKIE_NAME`, deliberately
+ * **not** the same cookie as end-user sessions) and resolves it via
+ * {@link resolveAdminFromToken}.
  *
  * A completely separate mechanism from {@link requireAuth}, not layered on
  * it: an end-user session token and an admin session token are never
  * interchangeable in either direction.
  *
  * Fails closed: an unset `ADMIN_JWT_SECRET` (the default for any instance
- * that doesn't run the admin app) makes {@link verifyAdminToken} throw, so
+ * that doesn't run the admin app) makes {@link resolveAdminFromToken}
- * every request is rejected rather than the surface left open — same
+ * throw, so every request is rejected rather than the surface left open —
- * posture as `requireInternalWorker`.
+ * same posture as `requireInternalWorker`.
  *
  * @throws {HttpError} `401 NOT_AUTHENTICATED` for any failure — missing
- *   cookie, malformed/expired JWT, unknown admin, stale tokenVersion, or
+ *   cookie or anything {@link resolveAdminFromToken} rejects on. Never
- *   no secret configured. Never distinguishes the reason.
+ *   distinguishes the reason.
  */
 export async function requireAdmin(
   req: Request,
@@ -51,20 +75,13 @@ export async function requireAdmin(
       throw new HttpError(401, ErrorCode.NOT_AUTHENTICATED, "Not authenticated");
     }
 
-    const payload = verifyAdminToken(token);
+    res.locals.adminUser = await resolveAdminFromToken(token);
-    const admin = await prisma.adminUser.findUnique({ where: { id: payload.adminUserId } });
-
-    if (!admin || admin.tokenVersion !== payload.tokenVersion) {
-      throw new HttpError(401, ErrorCode.NOT_AUTHENTICATED, "Not authenticated");
-    }
-
-    res.locals.adminUser = toSafeAdmin(admin);
     next();
   } catch (err) {
     if (err instanceof HttpError) {
       next(err);
     } else {
-      // Covers jwt.verify failures and the unset-secret throw from verifyAdminToken.
+      // Covers everything resolveAdminFromToken can throw.
       next(new HttpError(401, ErrorCode.NOT_AUTHENTICATED, "Not authenticated"));
     }
   }

apps/api/src/middlewares/require-auth.ts

@@ -13,16 +13,34 @@ import { toSafeProfile } from "../lib/safe-profile.js";
  * typed, no cast needed.
  */
 export interface AuthLocals {
-  /** The authenticated profile, resolved from the session cookie's JWT. */
+  /** The authenticated profile, resolved from the session cookie's JWT (or an `Authorization: Bearer` one, for cookie-less clients). */
   userProfile: SafeUserProfile;
 }
 
+/**
+ * Pulls the raw JWT out of an `Authorization: Bearer <jwt>` header, or
+ * returns `null` if it's absent or malformed. This is the fallback path for
+ * clients that can't rely on the `session` cookie — a Capacitor WebView,
+ * whose origin never receives a `SameSite=Lax` cookie (see `AuthResponse`
+ * in packages/shared). The cookie remains the primary mechanism; this only
+ * kicks in when the cookie isn't there.
+ */
+function readBearerToken(header: string | undefined): string | null {
+  if (!header?.startsWith("Bearer ")) {
+    return null;
+  }
+  const token = header.slice("Bearer ".length).trim();
+  return token.length > 0 ? token : null;
+}
+
 /**
  * Express middleware guarding routes that require an authenticated
- * profile. Reads the session cookie, verifies the JWT, and re-checks
+ * profile. Reads the session cookie (falling back to an `Authorization:
- * `tokenVersion` against the database — so a stateless JWT can still be
+ * Bearer <jwt>` header when there's no cookie — see {@link readBearerToken}),
- * invalidated server-side (e.g. on password change / logout-everywhere,
+ * verifies the JWT, and re-checks `tokenVersion` against the database — so a
- * once that feature exists) despite carrying no server-side session.
+ * stateless JWT can still be invalidated server-side (e.g. on password
+ * change / logout-everywhere, once that feature exists) despite carrying no
+ * server-side session.
  *
  * On success, attaches the resolved profile to `res.locals.userProfile`
  * (typed via {@link AuthLocals}) for downstream handlers to use.
@@ -33,9 +51,9 @@ export interface AuthLocals {
  * project-wide ambient augmentation silently changing every `Request` in
  * the codebase, whether or not it went through this middleware.
  *
- * @throws {HttpError} `401 NOT_AUTHENTICATED` for any failure — missing
+ * @throws {HttpError} `401 NOT_AUTHENTICATED` for any failure — no cookie
- *   cookie, malformed/expired JWT, unknown profile, or stale tokenVersion.
+ *   and no usable Bearer header, malformed/expired JWT, unknown profile, or
- *   Never distinguishes the reason to the client.
+ *   stale tokenVersion. Never distinguishes the reason to the client.
  */
 export async function requireAuth(
   req: Request,
@@ -43,7 +61,11 @@ export async function requireAuth(
   next: NextFunction,
 ) {
   try {
-    const token = req.cookies?.[env.AUTH_COOKIE_NAME];
+    const cookieToken = req.cookies?.[env.AUTH_COOKIE_NAME];
+    // Cookie first (the browser's mechanism, unchanged); `Authorization:
+    // Bearer` as a fallback for cookie-less clients — see readBearerToken.
+    const token =
+      typeof cookieToken === "string" ? cookieToken : readBearerToken(req.headers.authorization);
     if (typeof token !== "string") {
       throw new HttpError(401, ErrorCode.NOT_AUTHENTICATED, "Not authenticated");
     }

apps/api/src/modules/admin/admin-auth.routes.ts

@@ -5,7 +5,7 @@ import { env } from "../../config/env.js";
 import { type AdminLocals, requireAdmin } from "../../middlewares/require-admin.js";
 import { adminLogin } from "./admin-auth.service.js";
 
-/** Router mounted at `/admin/auth` (via `admin.routes.ts`) — admin login, logout, current-admin. No signup: admins are created out-of-band (`src/scripts/create-admin.ts`). */
+/** Router mounted at `/admin/api/auth` (via `admin.routes.ts`) — admin login, logout, current-admin. No signup: admins are created out-of-band (`src/scripts/create-admin.ts`). */
 export const adminAuthRouter = Router();
 
 const SEVEN_DAYS_MS = 7 * 24 * 60 * 60 * 1000;

apps/api/src/modules/admin/admin-catalog.routes.ts

@@ -0,0 +1,80 @@
+import { wrapAsyncHandler } from "@batch-cooking/express-tools";
+import {
+  listPlaceholdersQuerySchema,
+  listTechStepPlaceholdersQuerySchema,
+  markPlaceholdersReviewedSchema,
+  markTechStepPlaceholdersReviewedSchema,
+} from "@batch-cooking/shared";
+import { Router } from "express";
+import { requireAdmin } from "../../middlewares/require-admin.js";
+import {
+  listPlaceholderGroups,
+  markPlaceholdersReviewed,
+  pruneOrphanPlaceholders,
+} from "./admin-catalog.service.js";
+import {
+  listTechStepPlaceholders,
+  markTechStepPlaceholdersReviewed,
+} from "./admin-tech-step-catalog.service.js";
+
+/**
+ * Router mounted at `/admin/api/catalog` (via `admin.routes.ts`) — every route
+ * behind {@link requireAdmin}. Surfaces the off-catalog "placeholders" users
+ * typed when the seeded catalog fell short — free-text ingredients on a
+ * recipe line, and free-text techniques while correcting a step (issue #130)
+ * — so a maintainer can see what's missing and mark gaps as handled.
+ */
+export const adminCatalogRouter = Router();
+
+adminCatalogRouter.get(
+  "/placeholders",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    res.status(200).json(await listPlaceholderGroups(listPlaceholdersQuerySchema.parse(req.query)));
+  }),
+);
+
+adminCatalogRouter.patch(
+  "/placeholders/mark-reviewed",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    res
+      .status(200)
+      .json(await markPlaceholdersReviewed(markPlaceholdersReviewedSchema.parse(req.body)));
+  }),
+);
+
+/** Deletes placeholder rows no recipe references any more — see {@link pruneOrphanPlaceholders}. */
+adminCatalogRouter.post(
+  "/placeholders/prune-orphans",
+  requireAdmin,
+  wrapAsyncHandler(async (_req, res) => {
+    res.status(200).json(await pruneOrphanPlaceholders());
+  }),
+);
+
+// --- Missing techniques (issue #130) --------------------------------------
+
+adminCatalogRouter.get(
+  "/tech-step-placeholders",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    res
+      .status(200)
+      .json(await listTechStepPlaceholders(listTechStepPlaceholdersQuerySchema.parse(req.query)));
+  }),
+);
+
+adminCatalogRouter.patch(
+  "/tech-step-placeholders/mark-reviewed",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    res
+      .status(200)
+      .json(
+        await markTechStepPlaceholdersReviewed(
+          markTechStepPlaceholdersReviewedSchema.parse(req.body),
+        ),
+      );
+  }),
+);

apps/api/src/modules/admin/admin-catalog.service.ts

@@ -0,0 +1,156 @@
+import type {
+  CatalogPlaceholderGroupView,
+  ListPlaceholdersQuery,
+  MarkPlaceholdersReviewedInput,
+  PruneOrphansResultView,
+} from "@batch-cooking/shared";
+import { prisma } from "../../db/prisma.js";
+
+/**
+ * Grouping key for two placeholder spellings that mean the same missing
+ * ingredient — lower-cased, accent-stripped, punctuation-neutralised,
+ * whitespace-collapsed. "Piment d'Espelette", "piment d espelette" and
+ * "PIMENT  D'ESPELETTE" all normalise to `"piment d espelette"`, so the
+ * admin view shows one gap, not three. Pure (no DB) — unit-tested on its
+ * own, same split convention as `matchXxx()` vs `loadXxx()` elsewhere.
+ */
+export function normalizePlaceholderName(raw: string): string {
+  return raw
+    .normalize("NFD")
+    .replace(/\p{Diacritic}/gu, "")
+    .toLowerCase()
+    .replace(/[^\p{Letter}\p{Number}]+/gu, " ")
+    .trim()
+    .replace(/\s+/g, " ");
+}
+
+/** Prisma `include` for the placeholder query — up to a few `RecipeIngredient` links per row, each with just enough of its recipe for the "seen in…" preview and the distinct-recipe count. */
+const placeholderInclude = {
+  recipes: {
+    take: 5,
+    include: { recipe: { select: { id: true, name: true } } },
+  },
+} as const;
+
+/**
+ * Every placeholder `Ingredient` (see `Ingredient.isPlaceholder` in
+ * schema.prisma), grouped by {@link normalizePlaceholderName} so a
+ * maintainer reviews one row per *missing ingredient* rather than one per
+ * recipe line. Ordered by recipe impact (most-requested gap first), then
+ * name.
+ *
+ * `query.reviewed` selects which side to show: omitted / `"false"` drops
+ * groups whose every row has already been triaged (`reviewedAt` set) — the
+ * default working list; `"true"` keeps only those fully-triaged groups.
+ */
+export async function listPlaceholderGroups(
+  query: ListPlaceholdersQuery,
+): Promise<CatalogPlaceholderGroupView[]> {
+  try {
+    const rows = await prisma.ingredient.findMany({
+      where: { isPlaceholder: true },
+      include: placeholderInclude,
+      orderBy: { createdAt: "asc" },
+    });
+
+    /** Accumulator per normalized name — mutated in the loop, shaped into the view after. */
+    interface GroupAccumulator {
+      normalizedName: string;
+      displayNames: Set<string>;
+      ingredientIds: number[];
+      recipeIds: Set<number>;
+      sampleRecipes: Map<number, string>;
+      firstSeenAt: Date | null;
+      allReviewed: boolean;
+    }
+    const groups = new Map<string, GroupAccumulator>();
+
+    for (const row of rows) {
+      const name = row.displayName ?? "";
+      const normalizedName = normalizePlaceholderName(name);
+      let group = groups.get(normalizedName);
+      if (!group) {
+        group = {
+          normalizedName,
+          displayNames: new Set(),
+          ingredientIds: [],
+          recipeIds: new Set(),
+          sampleRecipes: new Map(),
+          firstSeenAt: null,
+          allReviewed: true,
+        };
+        groups.set(normalizedName, group);
+      }
+      if (name.length > 0) group.displayNames.add(name);
+      group.ingredientIds.push(row.id);
+      for (const link of row.recipes) {
+        group.recipeIds.add(link.recipe.id);
+        if (group.sampleRecipes.size < 5) group.sampleRecipes.set(link.recipe.id, link.recipe.name);
+      }
+      if (row.createdAt && (group.firstSeenAt === null || row.createdAt < group.firstSeenAt)) {
+        group.firstSeenAt = row.createdAt;
+      }
+      if (row.reviewedAt === null) group.allReviewed = false;
+    }
+
+    // `reviewed=true` → the archive of handled gaps; anything else → the
+    // working list of gaps still to look at.
+    const wantReviewed = query.reviewed === "true";
+    return [...groups.values()]
+      .filter((group) => group.allReviewed === wantReviewed)
+      .map((group) => ({
+        normalizedName: group.normalizedName,
+        displayNames: [...group.displayNames].sort((a, b) => a.localeCompare(b, "fr")),
+        ingredientIds: group.ingredientIds,
+        recipeCount: group.recipeIds.size,
+        sampleRecipes: [...group.sampleRecipes.entries()].map(([id, name]) => ({ id, name })),
+        firstSeenAt: group.firstSeenAt?.toISOString() ?? null,
+        allReviewed: group.allReviewed,
+      }))
+      .sort(
+        (a, b) => b.recipeCount - a.recipeCount || a.normalizedName.localeCompare(b.normalizedName),
+      );
+  } catch (err) {
+    throw err; // see recipe.service.ts's equivalent catch comment
+  }
+}
+
+/**
+ * Stamps `reviewedAt` on the given placeholder ids — a maintainer has seen
+ * this gap (and, if it warranted it, added the real catalog entry by hand;
+ * this endpoint never touches the catalog itself). Scoped to
+ * `isPlaceholder: true` so a stray real id is a silent no-op, not a
+ * mislabel. Returns how many rows were actually stamped.
+ */
+export async function markPlaceholdersReviewed(
+  input: MarkPlaceholdersReviewedInput,
+): Promise<{ reviewed: number }> {
+  try {
+    const { count } = await prisma.ingredient.updateMany({
+      where: { id: { in: input.ingredientIds }, isPlaceholder: true },
+      data: { reviewedAt: new Date() },
+    });
+    return { reviewed: count };
+  } catch (err) {
+    throw err; // see recipe.service.ts's equivalent catch comment
+  }
+}
+
+/**
+ * Deletes placeholder rows no recipe references any more — the debris left
+ * when a recipe edit drops a placeholder line (the `RecipeIngredient` row
+ * goes, the `Ingredient` row doesn't). A manual GC (button in the admin
+ * catalog view, or `scripts/prune-orphan-placeholders.ts`) rather than a
+ * cascade: a placeholder is still evidence of a catalog gap even with no
+ * live recipe, so dropping it is a deliberate call, not automatic.
+ */
+export async function pruneOrphanPlaceholders(): Promise<PruneOrphansResultView> {
+  try {
+    const { count } = await prisma.ingredient.deleteMany({
+      where: { isPlaceholder: true, recipes: { none: {} } },
+    });
+    return { deleted: count };
+  } catch (err) {
+    throw err; // see recipe.service.ts's equivalent catch comment
+  }
+}

apps/api/src/modules/admin/admin-contact.routes.ts

@@ -0,0 +1,59 @@
+import { HttpError } from "@batch-cooking/error-tools";
+import { wrapAsyncHandler } from "@batch-cooking/express-tools";
+import {
+  createForgejoIssueSchema,
+  ErrorCode,
+  listContactMessagesQuerySchema,
+} from "@batch-cooking/shared";
+import { Router } from "express";
+import { requireAdmin } from "../../middlewares/require-admin.js";
+import {
+  createForgejoIssueFromMessage,
+  getForgejoStatus,
+  listContactMessages,
+} from "./admin-contact.service.js";
+
+/**
+ * Router mounted at `/admin/api/contact` (via `admin.routes.ts`) — behind
+ * {@link requireAdmin}. Backs the `/admin/messages` page: the read-only list
+ * of contact-form messages (issue #80), plus "create a Forgejo issue from
+ * this message" (issue #81). Still no message-mutation routes — the message
+ * itself stays read-only.
+ */
+export const adminContactRouter = Router();
+
+adminContactRouter.get(
+  "/",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    res
+      .status(200)
+      .json(await listContactMessages(listContactMessagesQuerySchema.parse(req.query)));
+  }),
+);
+
+// Static path — declared before `/:id/...` so it's never parsed as an id.
+adminContactRouter.get(
+  "/forgejo/status",
+  requireAdmin,
+  wrapAsyncHandler(async (_req, res) => {
+    res.status(200).json(getForgejoStatus());
+  }),
+);
+
+adminContactRouter.post(
+  "/:id/forgejo-issue",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    const id = Number(req.params.id);
+    if (!Number.isInteger(id) || id <= 0) {
+      throw new HttpError(
+        400,
+        ErrorCode.VALIDATION_ERROR,
+        `Not a valid contact message id: ${req.params.id}`,
+      );
+    }
+    const input = createForgejoIssueSchema.parse(req.body);
+    res.status(200).json(await createForgejoIssueFromMessage(id, input));
+  }),
+);

apps/api/src/modules/admin/admin-contact.service.ts

@@ -0,0 +1,133 @@
+import { HttpError } from "@batch-cooking/error-tools";
+import {
+  type ContactMessageAdminView,
+  type ContactMessageType,
+  type CreateForgejoIssueInput,
+  ErrorCode,
+  type ForgejoIntegrationStatus,
+  type ListContactMessagesQuery,
+} from "@batch-cooking/shared";
+import { prisma } from "../../db/prisma.js";
+import { forgejo } from "../../lib/forgejo/forgejo.service.js";
+
+/** How many messages `listContactMessages` returns per call — the page is a triage view, not an export (same cap/rationale as `CORRECTIONS_PAGE_SIZE`). */
+const CONTACT_MESSAGES_PAGE_SIZE = 200;
+
+const contactMessageInclude = {
+  author: { select: { id: true, firstName: true, lastName: true, email: true } },
+} as const;
+
+type ContactMessageRow = Awaited<
+  ReturnType<
+    typeof prisma.contactMessage.findFirstOrThrow<{ include: typeof contactMessageInclude }>
+  >
+>;
+
+/** Shapes one Prisma `ContactMessage` row (with {@link contactMessageInclude}) into its admin view. */
+function toContactMessageAdminView(row: ContactMessageRow): ContactMessageAdminView {
+  return {
+    id: row.id,
+    // Safe cast: `POST /contact` validates `type` against
+    // `CONTACT_MESSAGE_TYPES` before insert, so the column only ever holds
+    // one of those values.
+    type: row.type as ContactMessageType,
+    message: row.message,
+    pageUrl: row.pageUrl,
+    userAgent: row.userAgent,
+    appVersion: row.appVersion,
+    createdAt: row.createdAt.toISOString(),
+    // `null` when the sender's account was deleted after sending
+    // (`authorId` is `onDelete: SetNull`).
+    author: row.author,
+    forgejoIssueNumber: row.forgejoIssueNumber,
+    forgejoIssueUrl: row.forgejoIssueUrl,
+  };
+}
+
+/**
+ * Every `ContactMessage` for the admin read view (`/admin/messages`, issue
+ * #80) — newest first, capped at {@link CONTACT_MESSAGES_PAGE_SIZE}, with an
+ * optional single-`type` filter. Read-only: this first version has no
+ * triage workflow (status / assignment / notes), so there's no update
+ * counterpart.
+ */
+export async function listContactMessages(
+  query: ListContactMessagesQuery,
+): Promise<ContactMessageAdminView[]> {
+  try {
+    const rows = await prisma.contactMessage.findMany({
+      where: query.type ? { type: query.type } : {},
+      orderBy: { createdAt: "desc" },
+      take: CONTACT_MESSAGES_PAGE_SIZE,
+      include: contactMessageInclude,
+    });
+    return rows.map(toContactMessageAdminView);
+  } catch (err) {
+    // Rethrown as-is — see `admin-tech-steps.service.ts`'s equivalent catch.
+    throw err;
+  }
+}
+
+/** Whether the "create a Forgejo issue from a message" feature is usable (issue #81) — drives whether the admin UI shows the button. */
+export function getForgejoStatus(): ForgejoIntegrationStatus {
+  return { enabled: forgejo.isConfigured() };
+}
+
+/**
+ * Creates a Forgejo issue from contact message `messageId` and records the
+ * link on the row (issue #81). The `title`/`body` come from the admin's
+ * pre-filled, edited modal.
+ *
+ * Order matters: every precondition is checked before Forgejo is called,
+ * and the row is only touched *after* Forgejo succeeds — a failed call
+ * leaves no partial state (no linked issue, button still shown).
+ *
+ * @throws {HttpError} `503 FORGEJO_NOT_CONFIGURED` (env not set),
+ *   `404 CONTACT_MESSAGE_NOT_FOUND`, `409 CONTACT_MESSAGE_ALREADY_LINKED`
+ *   (already has an issue), or `502 FORGEJO_REQUEST_FAILED` (the Forgejo
+ *   call failed — DB untouched).
+ */
+export async function createForgejoIssueFromMessage(
+  messageId: number,
+  input: CreateForgejoIssueInput,
+): Promise<ContactMessageAdminView> {
+  try {
+    if (!forgejo.isConfigured()) {
+      throw new HttpError(
+        503,
+        ErrorCode.FORGEJO_NOT_CONFIGURED,
+        "Forgejo integration is not configured",
+      );
+    }
+
+    const existing = await prisma.contactMessage.findUnique({ where: { id: messageId } });
+    if (!existing) {
+      throw new HttpError(
+        404,
+        ErrorCode.CONTACT_MESSAGE_NOT_FOUND,
+        `Contact message ${messageId} not found`,
+      );
+    }
+    if (existing.forgejoIssueNumber !== null) {
+      throw new HttpError(
+        409,
+        ErrorCode.CONTACT_MESSAGE_ALREADY_LINKED,
+        `Contact message ${messageId} already links to Forgejo issue #${existing.forgejoIssueNumber}`,
+      );
+    }
+
+    // Throws `502 FORGEJO_REQUEST_FAILED` on any failure — propagated below,
+    // before the row is touched.
+    const issue = await forgejo.createIssue({ title: input.title, body: input.body });
+
+    const updated = await prisma.contactMessage.update({
+      where: { id: messageId },
+      data: { forgejoIssueNumber: issue.number, forgejoIssueUrl: issue.htmlUrl },
+      include: contactMessageInclude,
+    });
+    return toContactMessageAdminView(updated);
+  } catch (err) {
+    // Rethrown as-is — see `admin-tech-steps.service.ts`'s equivalent catch.
+    throw err;
+  }
+}

apps/api/src/modules/admin/admin-metrics.routes.ts

@@ -0,0 +1,22 @@
+import { wrapAsyncHandler } from "@batch-cooking/express-tools";
+import { getMetricsSchema } from "@batch-cooking/shared";
+import { Router } from "express";
+import { requireAdmin } from "../../middlewares/require-admin.js";
+import { getMetrics } from "./admin-metrics.service.js";
+
+/** Router mounted at `/admin/api/metrics` (via `admin.routes.ts`) — every route behind {@link requireAdmin}. */
+export const adminMetricsRouter = Router();
+
+/**
+ * Returns the admin dashboard's usage metrics — a `snapshot` of current
+ * totals plus `?days=` (7–365, default 30) days of daily time series (see
+ * {@link getMetrics}). Read-only; no side effects.
+ */
+adminMetricsRouter.get(
+  "/",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    const { days } = getMetricsSchema.parse(req.query);
+    res.status(200).json(await getMetrics(days));
+  }),
+);

apps/api/src/modules/admin/admin-metrics.service.ts

@@ -0,0 +1,242 @@
+import type {
+  MetricsBreakdownRow,
+  MetricsEventSeries,
+  MetricsSnapshotView,
+  MetricsTimeBucket,
+  MetricsView,
+} from "@batch-cooking/shared";
+import { prisma } from "../../db/prisma.js";
+
+/** UTC `YYYY-MM-DD` for a `Date` — the bucket key used by {@link bucketByDay}. */
+function utcDayKey(date: Date): string {
+  return date.toISOString().slice(0, 10);
+}
+
+/** Start-of-day (UTC) `Date` that is `daysAgo` days before `from`. */
+function startOfUtcDay(from: Date, daysAgo: number): Date {
+  return new Date(Date.UTC(from.getUTCFullYear(), from.getUTCMonth(), from.getUTCDate() - daysAgo));
+}
+
+/**
+ * Buckets `dates` into `days` consecutive daily counts starting at `since`
+ * (a start-of-UTC-day `Date`). Every day in the window is present, days
+ * with no matching date carry `count: 0`. Pure/synchronous — factored out
+ * so the bucketing is unit-testable without a database, same split as
+ * `aggregateShoppingList`.
+ */
+export function bucketByDay(dates: Date[], since: Date, days: number): MetricsTimeBucket[] {
+  const counts = new Map<string, number>();
+  for (let i = 0; i < days; i++) {
+    const day = new Date(since.getTime() + i * 86_400_000);
+    counts.set(utcDayKey(day), 0);
+  }
+  for (const date of dates) {
+    const key = utcDayKey(date);
+    const current = counts.get(key);
+    if (current !== undefined) counts.set(key, current + 1);
+  }
+  return [...counts.entries()]
+    .sort(([a], [b]) => a.localeCompare(b))
+    .map(([date, count]) => ({ date, count }));
+}
+
+/** Shapes a Prisma `groupBy ... _count` result into the frontend's `{ key, label, count }` rows, sorted by count desc. */
+function toBreakdown(
+  rows: { key: string | null; count: number }[],
+  labelFor: (key: string) => string = (key) => key,
+): MetricsBreakdownRow[] {
+  return rows
+    .map(({ key, count }) => {
+      const resolved = key ?? "unknown";
+      return { key: resolved, label: labelFor(resolved), count };
+    })
+    .sort((a, b) => b.count - a.count);
+}
+
+/** Every point-in-time `COUNT` for the KPI tiles — see {@link MetricsSnapshotView}. */
+async function getSnapshot(): Promise<MetricsSnapshotView> {
+  try {
+    const [
+      admins,
+      users,
+      households,
+      activeHouseholdGroups,
+      recipes,
+      recipesManual,
+      recipesImported,
+      recipeBySourceGroups,
+      sources,
+      plannings,
+      planningItems,
+      steps,
+      detectedTechniques,
+      favorites,
+      corrections,
+      correctionsUnconsumed,
+      correctionsRemoval,
+      trainingSuggestions,
+      suggestionStatusGroups,
+      suggestionSourceTypeGroups,
+    ] = await Promise.all([
+      prisma.adminUser.count(),
+      prisma.userProfile.count(),
+      prisma.house.count(),
+      prisma.planning.groupBy({ by: ["houseId"] }),
+      prisma.recipe.count(),
+      prisma.recipe.count({ where: { sourceId: null } }),
+      prisma.recipe.count({ where: { sourceId: { not: null } } }),
+      prisma.recipe.groupBy({
+        by: ["sourceId"],
+        where: { sourceId: { not: null } },
+        _count: { _all: true },
+      }),
+      prisma.source.findMany({ select: { id: true, key: true, name: true } }),
+      prisma.planning.count(),
+      prisma.planningItem.count(),
+      prisma.step.count(),
+      prisma.stepTechStep.count(),
+      prisma.recipeFavorite.count(),
+      prisma.stepTechStepCorrection.count(),
+      prisma.stepTechStepCorrection.count({ where: { consumedAt: null } }),
+      prisma.stepTechStepCorrection.count({ where: { correctedTechStepId: null } }),
+      prisma.techStepTrainingSuggestion.count(),
+      prisma.techStepTrainingSuggestion.groupBy({ by: ["status"], _count: { _all: true } }),
+      prisma.techStepTrainingSuggestion.groupBy({ by: ["sourceType"], _count: { _all: true } }),
+    ]);
+
+    const sourceById = new Map(sources.map((source) => [source.id, source]));
+
+    return {
+      admins,
+      users,
+      households,
+      activeHouseholds: activeHouseholdGroups.length,
+      recipes,
+      recipesManual,
+      recipesImported,
+      recipesBySource: toBreakdown(
+        recipeBySourceGroups.map((group) => ({
+          key: group.sourceId === null ? null : (sourceById.get(group.sourceId)?.key ?? null),
+          count: group._count._all,
+        })),
+        (key) => {
+          const source = sources.find((s) => s.key === key);
+          return source ? source.name : key;
+        },
+      ),
+      plannings,
+      planningItems,
+      steps,
+      detectedTechniques,
+      favorites,
+      corrections,
+      correctionsUnconsumed,
+      correctionsRemoval,
+      trainingSuggestions,
+      trainingSuggestionsByStatus: toBreakdown(
+        suggestionStatusGroups.map((group) => ({ key: group.status, count: group._count._all })),
+      ),
+      trainingSuggestionsBySourceType: toBreakdown(
+        suggestionSourceTypeGroups.map((group) => ({
+          key: group.sourceType,
+          count: group._count._all,
+        })),
+      ),
+    };
+  } catch (err) {
+    throw err; // see recipe.service.ts's equivalent catch comment
+  }
+}
+
+/**
+ * Builds the admin dashboard's full metrics payload — a `snapshot` of
+ * current totals plus `rangeDays` days of daily time series, derived from
+ * the `createdAt` columns the `admin_metrics` migration added and from the
+ * `AnalyticsEvent` table. `days` is the caller-validated `?days=` value
+ * (see `getMetricsSchema`, 7–365).
+ */
+export async function getMetrics(days: number): Promise<MetricsView> {
+  try {
+    const now = new Date();
+    const since = startOfUtcDay(now, days - 1);
+
+    const [
+      snapshot,
+      signups,
+      recipesCreated,
+      planningItemsAdded,
+      correctionsSubmitted,
+      trainingSuggestions,
+      eventRows,
+    ] = await Promise.all([
+      getSnapshot(),
+      prisma.userProfile.findMany({
+        where: { createdAt: { gte: since } },
+        select: { createdAt: true },
+      }),
+      prisma.recipe.findMany({ where: { createdAt: { gte: since } }, select: { createdAt: true } }),
+      prisma.planningItem.findMany({
+        where: { createdAt: { gte: since } },
+        select: { createdAt: true },
+      }),
+      prisma.stepTechStepCorrection.findMany({
+        where: { createdAt: { gte: since } },
+        select: { createdAt: true },
+      }),
+      prisma.techStepTrainingSuggestion.findMany({
+        where: { createdAt: { gte: since } },
+        select: { createdAt: true },
+      }),
+      prisma.analyticsEvent.findMany({
+        where: { createdAt: { gte: since } },
+        select: { type: true, createdAt: true },
+      }),
+    ]);
+
+    const eventsByType = new Map<string, Date[]>();
+    for (const row of eventRows) {
+      const list = eventsByType.get(row.type);
+      if (list) list.push(row.createdAt);
+      else eventsByType.set(row.type, [row.createdAt]);
+    }
+    const events: MetricsEventSeries[] = [...eventsByType.entries()]
+      .sort(([a], [b]) => a.localeCompare(b))
+      .map(([type, dates]) => ({ type, buckets: bucketByDay(dates, since, days) }));
+
+    return {
+      generatedAt: now.toISOString(),
+      rangeDays: days,
+      snapshot,
+      series: {
+        signups: bucketByDay(
+          signups.map((r) => r.createdAt),
+          since,
+          days,
+        ),
+        recipesCreated: bucketByDay(
+          recipesCreated.map((r) => r.createdAt),
+          since,
+          days,
+        ),
+        planningItemsAdded: bucketByDay(
+          planningItemsAdded.map((r) => r.createdAt),
+          since,
+          days,
+        ),
+        correctionsSubmitted: bucketByDay(
+          correctionsSubmitted.map((r) => r.createdAt),
+          since,
+          days,
+        ),
+        trainingSuggestions: bucketByDay(
+          trainingSuggestions.map((r) => r.createdAt),
+          since,
+          days,
+        ),
+      },
+      events,
+    };
+  } catch (err) {
+    throw err; // see recipe.service.ts's equivalent catch comment
+  }
+}

apps/api/src/modules/admin/admin-monitoring.service.ts

@@ -0,0 +1,180 @@
+import type { MonitoringView, ServiceHealthView, ServiceStatus } from "@batch-cooking/shared";
+import { env } from "../../config/env.js";
+import { prisma } from "../../db/prisma.js";
+
+/** How long each outbound probe (Postgres query, intent-service HTTP) is allowed to take before it counts as `down`. */
+const PROBE_TIMEOUT_MS = 2000;
+
+/**
+ * Heartbeat-age thresholds for the LLM worker. Its default cron is weekly
+ * (`TECH_STEP_WORKER_CRON`, `0 3 * * 0`), and it also pings on boot/tick —
+ * so no ping for **8 days** means it likely missed its last scheduled fire
+ * (`degraded`), and none for **3 weeks** means it's almost certainly not
+ * running at all (`down`).
+ */
+const WORKER_STALE_AFTER_MS = 8 * 24 * 60 * 60 * 1000;
+const WORKER_DOWN_AFTER_MS = 21 * 24 * 60 * 60 * 1000;
+
+const WORKER_KEY = "tech-step-llm-worker";
+
+function nowIso(): string {
+  return new Date().toISOString();
+}
+
+function roundMs(value: number): number {
+  return Math.round(value * 10) / 10;
+}
+
+function errMessage(err: unknown): string {
+  return err instanceof Error ? err.message : String(err);
+}
+
+/** `12500` → `"il y a 12 s"`, `90000` → `"il y a 1 min"`, `172800000` → `"il y a 2 j"`. */
+function formatAgo(ms: number): string {
+  const s = Math.round(ms / 1000);
+  if (s < 60) return `il y a ${s} s`;
+  const m = Math.round(s / 60);
+  if (m < 60) return `il y a ${m} min`;
+  const h = Math.round(m / 60);
+  if (h < 48) return `il y a ${h} h`;
+  return `il y a ${Math.round(h / 24)} j`;
+}
+
+/** `process.uptime()` seconds → `"3 h 12 min"` / `"5 min"` / `"42 s"`. */
+function formatUptime(seconds: number): string {
+  const s = Math.floor(seconds);
+  if (s < 60) return `${s} s`;
+  const m = Math.floor(s / 60);
+  if (m < 60) return `${m} min`;
+  const h = Math.floor(m / 60);
+  return `${h} h ${m % 60} min`;
+}
+
+/** `prisma.$queryRaw\`SELECT 1\`` with a bounded timeout — the DB connectivity probe. */
+async function probePostgres(): Promise<ServiceHealthView> {
+  const start = performance.now();
+  try {
+    // `$queryRaw` doesn't take an AbortSignal — bound it with a race instead.
+    await Promise.race([
+      prisma.$queryRaw`SELECT 1`,
+      new Promise((_resolve, reject) =>
+        setTimeout(() => reject(new Error("timeout")), PROBE_TIMEOUT_MS),
+      ),
+    ]);
+    return {
+      key: "postgres",
+      status: "up",
+      latencyMs: roundMs(performance.now() - start),
+      detail: null,
+      checkedAt: nowIso(),
+    };
+  } catch (err) {
+    return {
+      key: "postgres",
+      status: "down",
+      latencyMs: null,
+      detail: errMessage(err),
+      checkedAt: nowIso(),
+    };
+  }
+}
+
+/** The API itself — trivially "up" (it's answering), reported with its process uptime/memory. */
+function probeApi(): ServiceHealthView {
+  const mem = process.memoryUsage();
+  return {
+    key: "api",
+    status: "up",
+    latencyMs: 0,
+    detail: `uptime ${formatUptime(process.uptime())} · RSS ${Math.round(mem.rss / 1_000_000)} Mo`,
+    checkedAt: nowIso(),
+  };
+}
+
+/** `GET {INTENT_SERVICE_BASE_URL}/health` — no secret needed on that route (see the service's `routes/health.py`). */
+async function probeIntentService(): Promise<ServiceHealthView> {
+  const start = performance.now();
+  try {
+    const res = await fetch(`${env.INTENT_SERVICE_BASE_URL}/health`, {
+      signal: AbortSignal.timeout(PROBE_TIMEOUT_MS),
+    });
+    const latencyMs = roundMs(performance.now() - start);
+    return {
+      key: "intent-service",
+      status: res.ok ? "up" : "degraded",
+      latencyMs,
+      detail: `HTTP ${res.status}`,
+      checkedAt: nowIso(),
+    };
+  } catch (err) {
+    return {
+      key: "intent-service",
+      status: "down",
+      latencyMs: null,
+      detail: errMessage(err),
+      checkedAt: nowIso(),
+    };
+  }
+}
+
+/** Reads the LLM worker's stored `WorkerHeartbeat` (it has no HTTP surface to probe directly) and grades it by age + last job outcome. */
+async function probeWorker(): Promise<ServiceHealthView> {
+  const heartbeat = await prisma.workerHeartbeat.findUnique({ where: { workerKey: WORKER_KEY } });
+  if (!heartbeat) {
+    return {
+      key: WORKER_KEY,
+      status: "unknown",
+      latencyMs: null,
+      detail: "aucun battement reçu",
+      checkedAt: nowIso(),
+      lastRunAt: null,
+      lastResult: null,
+    };
+  }
+
+  const ageMs = Date.now() - heartbeat.lastSeenAt.getTime();
+  const lastResult = (heartbeat.lastResult ?? null) as ServiceHealthView["lastResult"];
+
+  let status: ServiceStatus = "up";
+  if (ageMs > WORKER_DOWN_AFTER_MS) status = "down";
+  else if (ageMs > WORKER_STALE_AFTER_MS || lastResult?.ok === false) status = "degraded";
+
+  return {
+    key: WORKER_KEY,
+    status,
+    latencyMs: null,
+    detail: `dernier battement ${formatAgo(ageMs)}`,
+    checkedAt: nowIso(),
+    lastRunAt: heartbeat.lastRunAt?.toISOString() ?? null,
+    lastResult,
+  };
+}
+
+/**
+ * Actively probes every dependency the admin monitoring board watches —
+ * Postgres, the API itself, `tech-step-intent-service` (`/health`), and the
+ * LLM worker (via its stored heartbeat). Each probe is independent and
+ * bounded ({@link PROBE_TIMEOUT_MS}); one being `down` never fails the
+ * others or this call as a whole.
+ *
+ * No HTTP route calls this directly (there was one, `GET
+ * /admin/api/monitoring` — removed) — `MonitoringBroadcastService`
+ * (`lib/monitoring-broadcast.service.ts`) is the only caller now, on a
+ * server-side timer, broadcasting the result over WebSocket instead of
+ * each admin's browser polling this on its own.
+ */
+export async function getMonitoring(): Promise<MonitoringView> {
+  try {
+    const [postgres, intentService, worker] = await Promise.all([
+      probePostgres(),
+      probeIntentService(),
+      probeWorker(),
+    ]);
+    return {
+      generatedAt: nowIso(),
+      services: [postgres, probeApi(), intentService, worker],
+    };
+  } catch (err) {
+    throw err; // see recipe.service.ts's equivalent catch comment
+  }
+}

apps/api/src/modules/admin/admin-tech-step-catalog.service.ts

@@ -0,0 +1,87 @@
+import type {
+  ListTechStepPlaceholdersQuery,
+  MarkTechStepPlaceholdersReviewedInput,
+  TechStepPlaceholderView,
+} from "@batch-cooking/shared";
+import { prisma } from "../../db/prisma.js";
+
+/**
+ * The missing-technique review (issue #130) — the tech-step counterpart of
+ * `admin-catalog.service.ts`'s off-catalog *ingredient* review. Kept a flat
+ * list rather than grouping near-duplicate spellings the way that one does:
+ * correcting a technique — let alone typing one the catalog is missing — is
+ * rare enough that a handful of raw rows is all a maintainer ever sees here.
+ */
+
+/** Prisma `include` for the placeholder query — a bounded set of the `StepTechStep` rows pointing at this technique, each resolved to just its recipe id/name for the count + "seen in…" preview. */
+const placeholderInclude = {
+  steps: {
+    take: 50,
+    include: { step: { select: { recipe: { select: { id: true, name: true } } } } },
+  },
+} as const;
+
+/**
+ * Every placeholder `TechStep` (see `TechStep.isPlaceholder` in
+ * schema.prisma), most-impactful first (most distinct recipes, then name).
+ *
+ * `query.reviewed` selects which side to show: omitted / `"false"` drops
+ * rows already triaged (`reviewedAt` set) — the default working list;
+ * `"true"` keeps only those.
+ */
+export async function listTechStepPlaceholders(
+  query: ListTechStepPlaceholdersQuery,
+): Promise<TechStepPlaceholderView[]> {
+  try {
+    const rows = await prisma.techStep.findMany({
+      where: { isPlaceholder: true },
+      include: placeholderInclude,
+      orderBy: { createdAt: "asc" },
+    });
+
+    const wantReviewed = query.reviewed === "true";
+    return rows
+      .filter((row) => (row.reviewedAt !== null) === wantReviewed)
+      .map((row) => {
+        const recipeById = new Map<number, string>();
+        for (const link of row.steps) {
+          recipeById.set(link.step.recipe.id, link.step.recipe.name);
+        }
+        return {
+          id: row.id,
+          displayName: row.displayName ?? "",
+          createdAt: row.createdAt?.toISOString() ?? null,
+          reviewedAt: row.reviewedAt?.toISOString() ?? null,
+          recipeCount: recipeById.size,
+          sampleRecipes: [...recipeById.entries()].slice(0, 5).map(([id, name]) => ({ id, name })),
+        };
+      })
+      .sort(
+        (a, b) => b.recipeCount - a.recipeCount || a.displayName.localeCompare(b.displayName, "fr"),
+      );
+  } catch (err) {
+    throw err; // see recipe.service.ts's equivalent catch comment
+  }
+}
+
+/**
+ * Stamps `reviewedAt` on the given placeholder `TechStep` ids — a
+ * maintainer has seen this proposal (and, if it warranted it, promoted it
+ * into `reference-seed-data.ts` + `tech-step-training-data.ts` by hand; this
+ * endpoint never touches the catalog itself). Scoped to
+ * `isPlaceholder: true` so a stray real id is a silent no-op. Returns how
+ * many rows were actually stamped.
+ */
+export async function markTechStepPlaceholdersReviewed(
+  input: MarkTechStepPlaceholdersReviewedInput,
+): Promise<{ reviewed: number }> {
+  try {
+    const { count } = await prisma.techStep.updateMany({
+      where: { id: { in: input.techStepIds }, isPlaceholder: true },
+      data: { reviewedAt: new Date() },
+    });
+    return { reviewed: count };
+  } catch (err) {
+    throw err; // see recipe.service.ts's equivalent catch comment
+  }
+}

apps/api/src/modules/admin/admin-tech-steps.routes.ts

@@ -0,0 +1,80 @@
+import { HttpError } from "@batch-cooking/error-tools";
+import { wrapAsyncHandler } from "@batch-cooking/express-tools";
+import {
+  ErrorCode,
+  listCorrectionsQuerySchema,
+  listSuggestionsQuerySchema,
+  retrainRequestSchema,
+  trainingDataSnippetQuerySchema,
+  updateTrainingSuggestionSchema,
+} from "@batch-cooking/shared";
+import { Router } from "express";
+import { requireAdmin } from "../../middlewares/require-admin.js";
+import {
+  getTrainingDataSnippet,
+  listCorrections,
+  listSuggestions,
+  runRetrain,
+  updateSuggestion,
+} from "./admin-tech-steps.service.js";
+
+/** Router mounted at `/admin/api/tech-steps` (via `admin.routes.ts`) — every route behind {@link requireAdmin}. Correction/suggestion triage + the retrain trigger. */
+export const adminTechStepsRouter = Router();
+
+adminTechStepsRouter.get(
+  "/suggestions",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    res.status(200).json(await listSuggestions(listSuggestionsQuerySchema.parse(req.query)));
+  }),
+);
+
+adminTechStepsRouter.get(
+  "/corrections",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    res.status(200).json(await listCorrections(listCorrectionsQuerySchema.parse(req.query)));
+  }),
+);
+
+adminTechStepsRouter.get(
+  "/training-data-snippet",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    res
+      .status(200)
+      .json(await getTrainingDataSnippet(trainingDataSnippetQuerySchema.parse(req.query)));
+  }),
+);
+
+adminTechStepsRouter.patch(
+  "/suggestions/:id",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    const id = Number(req.params.id);
+    if (!Number.isInteger(id) || id <= 0) {
+      throw new HttpError(
+        400,
+        ErrorCode.VALIDATION_ERROR,
+        `Not a valid suggestion id: ${req.params.id}`,
+      );
+    }
+    const input = updateTrainingSuggestionSchema.parse(req.body);
+    res.status(200).json(await updateSuggestion(id, input));
+  }),
+);
+
+/**
+ * Runs the F1 regression gate then (if it passes) the full step backfill,
+ * and marks the given suggestion ids — see {@link runRetrain}. Long-running
+ * and process-locked: `409 RETRAIN_ALREADY_RUNNING` if one is already
+ * underway.
+ */
+adminTechStepsRouter.post(
+  "/retrain",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    const input = retrainRequestSchema.parse(req.body);
+    res.status(200).json(await runRetrain(input));
+  }),
+);

apps/api/src/modules/admin/admin-tech-steps.service.ts

@@ -0,0 +1,325 @@
+import { HttpError } from "@batch-cooking/error-tools";
+import {
+  type CorrectionAdminView,
+  ErrorCode,
+  type ListCorrectionsQuery,
+  type ListSuggestionsQuery,
+  type RetrainRequestInput,
+  type RetrainResultView,
+  type TrainingDataSnippetQuery,
+  type TrainingDataSnippetView,
+  type TrainingSuggestionAdminView,
+  type TrainingSuggestionGroupView,
+  type UpdateTrainingSuggestionInput,
+} from "@batch-cooking/shared";
+import { prisma } from "../../db/prisma.js";
+import {
+  MIN_OVERALL_F1,
+  runTechStepEvalSuite,
+} from "../../lib/recipe-matching/tech-step-eval-runner.js";
+import { backfillTechSteps } from "../../scripts/backfill-tech-steps.js";
+
+/** How many raw corrections `listCorrections` returns per call — the browser is a triage view, not an export. */
+const CORRECTIONS_PAGE_SIZE = 200;
+
+const suggestionInclude = {
+  techStep: { select: { key: true } },
+  sourceCorrection: {
+    include: {
+      step: { select: { id: true, recipeId: true, description: true } },
+      previousTechStep: { select: { key: true } },
+      correctedTechStep: { select: { key: true } },
+    },
+  },
+} as const;
+
+type SuggestionRow = Awaited<
+  ReturnType<
+    typeof prisma.techStepTrainingSuggestion.findFirstOrThrow<{ include: typeof suggestionInclude }>
+  >
+>;
+
+/** Shapes one Prisma suggestion row (with {@link suggestionInclude}) into its admin view. */
+function toSuggestionView(row: SuggestionRow): TrainingSuggestionAdminView {
+  const correction = row.sourceCorrection;
+  return {
+    id: row.id,
+    techStepKey: row.techStep.key,
+    locale: row.locale,
+    suggestedSynonyms: row.suggestedSynonyms,
+    suggestedUtterances: row.suggestedUtterances,
+    sourceType: row.sourceType,
+    status: row.status,
+    createdAt: row.createdAt.toISOString(),
+    sourceCorrection: correction
+      ? {
+          id: correction.id,
+          recipeId: correction.step.recipeId,
+          stepId: correction.step.id,
+          clauseText: correction.step.description.slice(correction.start, correction.end),
+          previousTechStepKey: correction.previousTechStep?.key ?? null,
+          correctedTechStepKey: correction.correctedTechStep?.key ?? null,
+        }
+      : null,
+  };
+}
+
+/**
+ * Every `TechStepTrainingSuggestion` matching the (all-optional) filters,
+ * grouped by technique key — same "one block per technique" organisation
+ * as `list-pending-training-suggestions.ts`'s CLI report, which this UI
+ * replaces.
+ */
+export async function listSuggestions(
+  query: ListSuggestionsQuery,
+): Promise<TrainingSuggestionGroupView[]> {
+  try {
+    const rows = await prisma.techStepTrainingSuggestion.findMany({
+      where: {
+        ...(query.status ? { status: query.status } : {}),
+        ...(query.sourceType ? { sourceType: query.sourceType } : {}),
+        ...(query.locale ? { locale: query.locale } : {}),
+        ...(query.techStepKey ? { techStep: { key: query.techStepKey } } : {}),
+      },
+      orderBy: [{ techStepId: "asc" }, { createdAt: "asc" }],
+      include: suggestionInclude,
+    });
+
+    const byKey = new Map<string, TrainingSuggestionAdminView[]>();
+    for (const row of rows) {
+      const view = toSuggestionView(row);
+      const group = byKey.get(view.techStepKey);
+      if (group) group.push(view);
+      else byKey.set(view.techStepKey, [view]);
+    }
+    return [...byKey.entries()]
+      .sort(([a], [b]) => a.localeCompare(b))
+      .map(([techStepKey, suggestions]) => ({ techStepKey, suggestions }));
+  } catch (err) {
+    throw err; // see recipe.service.ts's equivalent catch comment
+  }
+}
+
+/**
+ * Raw `StepTechStepCorrection`s for the admin browser — newest first,
+ * capped at {@link CORRECTIONS_PAGE_SIZE}. Unlike the worker's own
+ * `getPendingCorrections`, this **includes** the `correctedTechStepId IS NULL`
+ * removals ("no technique here") that never become suggestions and are
+ * otherwise invisible.
+ */
+export async function listCorrections(query: ListCorrectionsQuery): Promise<CorrectionAdminView[]> {
+  try {
+    const consumedFilter =
+      query.consumed === "true"
+        ? { consumedAt: { not: null } }
+        : query.consumed === "false"
+          ? { consumedAt: null }
+          : {};
+    const correctedFilter =
+      query.hasCorrectedTechStep === "true"
+        ? { correctedTechStepId: { not: null } }
+        : query.hasCorrectedTechStep === "false"
+          ? { correctedTechStepId: null }
+          : {};
+
+    const rows = await prisma.stepTechStepCorrection.findMany({
+      where: { ...consumedFilter, ...correctedFilter },
+      orderBy: { createdAt: "desc" },
+      take: CORRECTIONS_PAGE_SIZE,
+      include: {
+        step: { select: { id: true, recipeId: true, description: true } },
+        previousTechStep: { select: { key: true } },
+        correctedTechStep: { select: { key: true } },
+      },
+    });
+
+    return rows.map((row) => ({
+      id: row.id,
+      recipeId: row.step.recipeId,
+      stepId: row.step.id,
+      stepDescription: row.step.description,
+      clauseText: row.step.description.slice(row.start, row.end),
+      start: row.start,
+      end: row.end,
+      previousTechStepKey: row.previousTechStep?.key ?? null,
+      correctedTechStepKey: row.correctedTechStep?.key ?? null,
+      createdAt: row.createdAt.toISOString(),
+      consumedAt: row.consumedAt?.toISOString() ?? null,
+    }));
+  } catch (err) {
+    throw err;
+  }
+}
+
+/**
+ * Curates one suggestion — edit its proposed synonyms/utterances and/or
+ * flip its `status`. At least one field must be present.
+ *
+ * @throws {HttpError} `400 VALIDATION_ERROR` if the body is empty.
+ * @throws {HttpError} `404 NOT_FOUND` if `id` matches no suggestion.
+ */
+export async function updateSuggestion(
+  id: number,
+  input: UpdateTrainingSuggestionInput,
+): Promise<TrainingSuggestionAdminView> {
+  try {
+    if (
+      input.status === undefined &&
+      input.suggestedSynonyms === undefined &&
+      input.suggestedUtterances === undefined
+    ) {
+      throw new HttpError(400, ErrorCode.VALIDATION_ERROR, "Nothing to update");
+    }
+
+    const existing = await prisma.techStepTrainingSuggestion.findUnique({ where: { id } });
+    if (!existing) {
+      throw new HttpError(404, ErrorCode.NOT_FOUND, `Training suggestion ${id} not found`);
+    }
+
+    const updated = await prisma.techStepTrainingSuggestion.update({
+      where: { id },
+      data: {
+        ...(input.status !== undefined ? { status: input.status } : {}),
+        ...(input.suggestedSynonyms !== undefined
+          ? { suggestedSynonyms: input.suggestedSynonyms }
+          : {}),
+        ...(input.suggestedUtterances !== undefined
+          ? { suggestedUtterances: input.suggestedUtterances }
+          : {}),
+      },
+      include: suggestionInclude,
+    });
+    return toSuggestionView(updated);
+  } catch (err) {
+    throw err;
+  }
+}
+
+/** Deduplicates while preserving first-seen order — for pooling synonyms/utterances across suggestions. */
+function dedupe(values: string[]): string[] {
+  return [...new Set(values.map((value) => value.trim()).filter((value) => value.length > 0))];
+}
+
+/** Indents each entry as a Python list literal line (4-space, trailing comma) — the shape `training_data.py`'s blocks use. */
+function pythonListBody(entries: string[]): string {
+  return entries.map((entry) => `    ${JSON.stringify(entry)},`).join("\n");
+}
+
+/**
+ * Aggregates the synonyms/utterances of every suggestion matching
+ * `techStepKey` + `locale` + `status` into a ready-to-paste
+ * `training_data.py` block. **Read-only** — editing that Python file and
+ * restarting the intent-service stay a manual maintainer step.
+ */
+export async function getTrainingDataSnippet(
+  query: TrainingDataSnippetQuery,
+): Promise<TrainingDataSnippetView> {
+  try {
+    const rows = await prisma.techStepTrainingSuggestion.findMany({
+      where: {
+        locale: query.locale,
+        status: query.status,
+        techStep: { key: query.techStepKey },
+      },
+      select: { suggestedSynonyms: true, suggestedUtterances: true },
+    });
+
+    const synonyms = dedupe(rows.flatMap((row) => row.suggestedSynonyms));
+    const utterances = dedupe(rows.flatMap((row) => row.suggestedUtterances));
+
+    const snippet = [
+      `# ${query.techStepKey} (${query.locale}) — ${rows.length} suggestion(s) "${query.status}"`,
+      `"synonyms": [`,
+      pythonListBody(synonyms),
+      `],`,
+      `"utterances": [`,
+      pythonListBody(utterances),
+      `],`,
+    ]
+      .filter((line) => line.length > 0)
+      .join("\n");
+
+    return {
+      techStepKey: query.techStepKey,
+      locale: query.locale,
+      status: query.status,
+      suggestionCount: rows.length,
+      synonyms,
+      utterances,
+      snippet,
+    };
+  } catch (err) {
+    throw err;
+  }
+}
+
+/** Process-wide lock — the F1 gate + full backfill is heavy and must never run twice concurrently. */
+let retrainInProgress = false;
+
+/**
+ * Runs the training-corpus regression gate then, if it passes, backfills
+ * every step and marks the given suggestion ids — the same three steps as
+ * `scripts/retrain-tech-steps.ts`, callable from the admin UI.
+ *
+ * **Only meaningful after** a maintainer has hand-edited
+ * `services/tech-step-intent-service/intent_service/training_data.py` **and
+ * restarted that service** (it trains once at boot) — this endpoint can do
+ * neither, and the admin UI states that prominently.
+ *
+ * A failed gate returns `gatePassed: false` with no backfill / no marking
+ * (HTTP 200 — it's an expected outcome to show the operator, not an error).
+ *
+ * @throws {HttpError} `409 RETRAIN_ALREADY_RUNNING` if a retrain is already in flight.
+ */
+export async function runRetrain(input: RetrainRequestInput): Promise<RetrainResultView> {
+  if (retrainInProgress) {
+    throw new HttpError(
+      409,
+      ErrorCode.RETRAIN_ALREADY_RUNNING,
+      "A retrain (F1 gate + backfill) is already running",
+    );
+  }
+  retrainInProgress = true;
+  try {
+    const { overall } = await runTechStepEvalSuite();
+    const gatePassed = overall.f1 >= MIN_OVERALL_F1;
+
+    let backfilled: RetrainResultView["backfilled"] = null;
+    const marked = { applied: 0, rejected: 0 };
+
+    if (gatePassed) {
+      backfilled = await backfillTechSteps();
+
+      const appliedIds = input.appliedIds ?? [];
+      const rejectedIds = input.rejectedIds ?? [];
+      if (appliedIds.length > 0) {
+        const { count } = await prisma.techStepTrainingSuggestion.updateMany({
+          where: { id: { in: appliedIds } },
+          data: { status: "applied" },
+        });
+        marked.applied = count;
+      }
+      if (rejectedIds.length > 0) {
+        const { count } = await prisma.techStepTrainingSuggestion.updateMany({
+          where: { id: { in: rejectedIds } },
+          data: { status: "rejected" },
+        });
+        marked.rejected = count;
+      }
+    }
+
+    return {
+      f1: overall.f1,
+      precision: overall.precision,
+      recall: overall.recall,
+      minF1: MIN_OVERALL_F1,
+      gatePassed,
+      backfilled,
+      marked,
+    };
+  } catch (err) {
+    throw err; // see recipe.service.ts's equivalent catch comment
+  } finally {
+    retrainInProgress = false;
+  }
+}

apps/api/src/modules/admin/admin-tours.routes.ts

@@ -0,0 +1,80 @@
+import { HttpError } from "@batch-cooking/error-tools";
+import { wrapAsyncHandler } from "@batch-cooking/express-tools";
+import {
+  createTourScenarioSchema,
+  ErrorCode,
+  updateTourScenarioSchema,
+} from "@batch-cooking/shared";
+import { Router } from "express";
+import { requireAdmin } from "../../middlewares/require-admin.js";
+import {
+  createTourScenario,
+  deleteTourScenario,
+  listTourScenarios,
+  listTourTargets,
+  updateTourScenario,
+} from "./admin-tours.service.js";
+
+/**
+ * Router mounted at `/admin/api/tours` (via `admin.routes.ts`) — every
+ * route behind {@link requireAdmin}. Full CRUD over the guided-tour
+ * scenarios the public `GET /reference/tours` serves to the web tour
+ * engine (issues #42/#44).
+ */
+export const adminToursRouter = Router();
+
+/** Express types a numeric route param `string | undefined`; parse + validate here. */
+function parseId(value: string | undefined): number {
+  const id = Number(value);
+  if (!Number.isInteger(id) || id <= 0) {
+    throw new HttpError(400, ErrorCode.VALIDATION_ERROR, `Invalid tour scenario id "${value}"`);
+  }
+  return id;
+}
+
+adminToursRouter.get(
+  "/",
+  requireAdmin,
+  wrapAsyncHandler(async (_req, res) => {
+    res.status(200).json(await listTourScenarios());
+  }),
+);
+
+/** The catalogue of valid highlight targets — for the editor's per-step target picker. */
+adminToursRouter.get(
+  "/targets",
+  requireAdmin,
+  wrapAsyncHandler(async (_req, res) => {
+    res.status(200).json(await listTourTargets());
+  }),
+);
+
+adminToursRouter.post(
+  "/",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    const scenario = await createTourScenario(createTourScenarioSchema.parse(req.body));
+    res.status(201).json(scenario);
+  }),
+);
+
+adminToursRouter.patch(
+  "/:id",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    const scenario = await updateTourScenario(
+      parseId(req.params.id),
+      updateTourScenarioSchema.parse(req.body),
+    );
+    res.status(200).json(scenario);
+  }),
+);
+
+adminToursRouter.delete(
+  "/:id",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    await deleteTourScenario(parseId(req.params.id));
+    res.status(204).end();
+  }),
+);

apps/api/src/modules/admin/admin-tours.service.ts

@@ -0,0 +1,175 @@
+import { HttpError } from "@batch-cooking/error-tools";
+import {
+  type AdminTourScenarioView,
+  type CreateTourScenarioInput,
+  ErrorCode,
+  type TourTargetView,
+  type UpdateTourScenarioInput,
+} from "@batch-cooking/shared";
+import { Prisma } from "@prisma/client";
+import { prisma } from "../../db/prisma.js";
+
+/** Shapes one Prisma `TourScenario` (with its steps) into the admin view. */
+function toAdminView(scenario: {
+  id: number;
+  key: string;
+  name: string;
+  enabled: boolean;
+  steps: Array<{
+    order: number;
+    route: string | null;
+    targetKey: string;
+    title: string;
+    content: string;
+  }>;
+}): AdminTourScenarioView {
+  return {
+    id: scenario.id,
+    key: scenario.key,
+    name: scenario.name,
+    enabled: scenario.enabled,
+    steps: scenario.steps
+      .slice()
+      .sort((a, b) => a.order - b.order)
+      .map((step) => ({
+        order: step.order,
+        route: step.route,
+        targetKey: step.targetKey,
+        title: step.title,
+        content: step.content,
+      })),
+  };
+}
+
+/** Every tour scenario — enabled *and* disabled — with its ordered steps. */
+export async function listTourScenarios(): Promise<AdminTourScenarioView[]> {
+  try {
+    const scenarios = await prisma.tourScenario.findMany({
+      orderBy: { key: "asc" },
+      include: { steps: { orderBy: { order: "asc" } } },
+    });
+    return scenarios.map(toAdminView);
+  } catch (err) {
+    throw err; // see the repo's service-layer try/catch convention
+  }
+}
+
+/** The catalogue of valid highlight targets, for the editor's target picker. */
+export async function listTourTargets(): Promise<TourTargetView[]> {
+  try {
+    return await prisma.tourTarget.findMany({ orderBy: { key: "asc" } });
+  } catch (err) {
+    throw err;
+  }
+}
+
+/**
+ * Creates an empty scenario (no steps yet — the editor adds them via
+ * {@link updateTourScenario}).
+ *
+ * @throws {HttpError} `409 TOUR_KEY_ALREADY_IN_USE` if `key` is taken.
+ */
+export async function createTourScenario(
+  input: CreateTourScenarioInput,
+): Promise<AdminTourScenarioView> {
+  try {
+    const scenario = await prisma.tourScenario.create({
+      data: { key: input.key, name: input.name },
+      include: { steps: true },
+    });
+    return toAdminView(scenario);
+  } catch (err) {
+    if (err instanceof Prisma.PrismaClientKnownRequestError && err.code === "P2002") {
+      throw new HttpError(
+        409,
+        ErrorCode.TOUR_KEY_ALREADY_IN_USE,
+        `A tour scenario with key "${input.key}" already exists`,
+      );
+    }
+    throw err;
+  }
+}
+
+/**
+ * Updates a scenario's `name`/`enabled` and **replaces its entire step
+ * list** (delete-all then recreate with `order` = array index) — the same
+ * block-replace `updateRecipe` uses for a recipe's steps, not a partial
+ * patch. `key` is immutable.
+ *
+ * @throws {HttpError} `404 TOUR_NOT_FOUND` if `id` matches no scenario.
+ * @throws {HttpError} `404 TOUR_TARGET_NOT_FOUND` if a step's `targetKey`
+ *   isn't a seeded `TourTarget`.
+ */
+export async function updateTourScenario(
+  id: number,
+  input: UpdateTourScenarioInput,
+): Promise<AdminTourScenarioView> {
+  try {
+    const existing = await prisma.tourScenario.findUnique({ where: { id } });
+    if (!existing) {
+      throw new HttpError(404, ErrorCode.TOUR_NOT_FOUND, `No tour scenario with id ${id}`);
+    }
+
+    const targetKeys = [...new Set(input.steps.map((step) => step.targetKey))];
+    if (targetKeys.length > 0) {
+      const known = await prisma.tourTarget.findMany({
+        where: { key: { in: targetKeys } },
+        select: { key: true },
+      });
+      const knownKeys = new Set(known.map((target) => target.key));
+      const unknown = targetKeys.find((key) => !knownKeys.has(key));
+      if (unknown !== undefined) {
+        throw new HttpError(
+          404,
+          ErrorCode.TOUR_TARGET_NOT_FOUND,
+          `No tour target with key "${unknown}"`,
+        );
+      }
+    }
+
+    const [, , scenario] = await prisma.$transaction([
+      prisma.tourScenario.update({
+        where: { id },
+        data: { name: input.name, enabled: input.enabled },
+      }),
+      prisma.tourScenarioStep.deleteMany({ where: { scenarioId: id } }),
+      prisma.tourScenario.update({
+        where: { id },
+        data: {
+          steps: {
+            create: input.steps.map((step, index) => ({
+              order: index,
+              route: step.route,
+              targetKey: step.targetKey,
+              title: step.title,
+              content: step.content,
+            })),
+          },
+        },
+        include: { steps: { orderBy: { order: "asc" } } },
+      }),
+    ]);
+    return toAdminView(scenario);
+  } catch (err) {
+    throw err;
+  }
+}
+
+/**
+ * Deletes a scenario. Its steps and every user's `TourProgress` row for it
+ * cascade away (a scenario that no longer exists has no "seen" state worth
+ * keeping).
+ *
+ * @throws {HttpError} `404 TOUR_NOT_FOUND` if `id` matches no scenario.
+ */
+export async function deleteTourScenario(id: number): Promise<void> {
+  try {
+    const existing = await prisma.tourScenario.findUnique({ where: { id } });
+    if (!existing) {
+      throw new HttpError(404, ErrorCode.TOUR_NOT_FOUND, `No tour scenario with id ${id}`);
+    }
+    await prisma.tourScenario.delete({ where: { id } });
+  } catch (err) {
+    throw err;
+  }
+}

apps/api/src/modules/admin/admin-users.routes.ts

@@ -0,0 +1,31 @@
+import { wrapAsyncHandler } from "@batch-cooking/express-tools";
+import { adminCreateUserSchema } from "@batch-cooking/shared";
+import { Router } from "express";
+import { requireAdmin } from "../../middlewares/require-admin.js";
+import { createUserProfile, listUsers } from "./admin-users.service.js";
+
+/**
+ * Router mounted at `/admin/api/users` (via `admin.routes.ts`) — every route
+ * behind {@link requireAdmin}. Backs the `/admin/utilisateurs` page: a
+ * read-only list of end-user accounts and a "create an account by hand"
+ * form. The server generates a one-time temporary password on create and
+ * returns it in the response (see `admin-users.service.ts`).
+ */
+export const adminUsersRouter = Router();
+
+adminUsersRouter.get(
+  "/",
+  requireAdmin,
+  wrapAsyncHandler(async (_req, res) => {
+    res.status(200).json(await listUsers());
+  }),
+);
+
+adminUsersRouter.post(
+  "/",
+  requireAdmin,
+  wrapAsyncHandler(async (req, res) => {
+    const input = adminCreateUserSchema.parse(req.body);
+    res.status(201).json(await createUserProfile(input));
+  }),
+);

apps/api/src/modules/admin/admin-users.service.ts

@@ -0,0 +1,145 @@
+import { randomInt } from "node:crypto";
+import { HttpError } from "@batch-cooking/error-tools";
+import {
+  type AdminCreateUserInput,
+  type AdminUserCreatedView,
+  type AdminUserListItemView,
+  ErrorCode,
+} from "@batch-cooking/shared";
+import argon2 from "argon2";
+import { env } from "../../config/env.js";
+import { prisma } from "../../db/prisma.js";
+import { analytics } from "../../lib/analytics.service.js";
+
+/**
+ * How many accounts `listUsers` returns per call. Like `CONTACT_MESSAGES_PAGE_SIZE`
+ * this is a triage view, not an export — the admin creates/looks up a handful
+ * of accounts, it never needs the whole table paginated.
+ */
+const USERS_PAGE_SIZE = 200;
+
+// Same reasoning as `admin-auth.service.ts`'s / `auth.service.ts`'s `hashOptions`:
+// argon2's real defaults are deliberately expensive; the test suite hashes
+// against throwaway data many times per run, so a cheaper cost keeps it fast
+// without weakening anything real. Never applies outside NODE_ENV=test.
+const testHashOptions = { memoryCost: 8192, timeCost: 2, parallelism: 1 };
+const hashOptions = env.NODE_ENV === "test" ? testHashOptions : undefined;
+
+/**
+ * Charset for {@link generateTemporaryPassword} — upper/lower letters + digits,
+ * minus the visually ambiguous ones (`0`/`O`/`1`/`l`/`I`), same spirit as
+ * `house.service.ts`'s `INVITE_CODE_CHARS`: this string is read off one screen
+ * and typed into another (or pasted, but not always).
+ */
+const TEMP_PASSWORD_CHARS = "ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnpqrstuvwxyz23456789";
+
+/** Length of a generated temporary password — comfortably above `signupSchema`'s 8-char floor. */
+const TEMP_PASSWORD_LENGTH = 16;
+
+/**
+ * A fresh random temporary password for an admin-created account. Uses
+ * `node:crypto`'s `randomInt` (not `Math.random`) exactly like
+ * `generateInviteCode()` — this value guards a real account until its owner
+ * changes it. Returned to the operator once and never stored in plain text.
+ */
+function generateTemporaryPassword(): string {
+  let password = "";
+  for (let i = 0; i < TEMP_PASSWORD_LENGTH; i++) {
+    password += TEMP_PASSWORD_CHARS[randomInt(TEMP_PASSWORD_CHARS.length)];
+  }
+  return password;
+}
+
+/** A `UserProfile` row with its household name joined in — the shape {@link toListItem} maps from. */
+type UserRow = Awaited<
+  ReturnType<
+    typeof prisma.userProfile.findFirstOrThrow<{
+      include: { house: { select: { name: true } } };
+    }>
+  >
+>;
+
+/** Shapes one Prisma `UserProfile` row (with its `house` name) into the admin list view — drops `passwordHash`/`tokenVersion`, resolves the household name. */
+function toListItem(row: UserRow): AdminUserListItemView {
+  return {
+    id: row.id,
+    firstName: row.firstName,
+    lastName: row.lastName,
+    email: row.email,
+    householdName: row.house?.name ?? null,
+    createdAt: row.createdAt.toISOString(),
+  };
+}
+
+/**
+ * Every end-user account for the admin `/admin/utilisateurs` list — newest
+ * first, capped at {@link USERS_PAGE_SIZE}. Read-only: this first version has
+ * no edit/disable/delete (deleting an account is irreversible and stays a
+ * deliberate self-service action in `AccountSettingsPage`).
+ */
+export async function listUsers(): Promise<AdminUserListItemView[]> {
+  try {
+    const rows = await prisma.userProfile.findMany({
+      // `id` as a tiebreaker so the order is total even if two accounts share
+      // a `createdAt` (bulk-provisioned in the same tick) — `id` ascends with
+      // `createdAt` anyway.
+      orderBy: [{ createdAt: "desc" }, { id: "desc" }],
+      take: USERS_PAGE_SIZE,
+      include: { house: { select: { name: true } } },
+    });
+    return rows.map(toListItem);
+  } catch (err) {
+    // Rethrown as-is — `wrapAsyncHandler`/the error middleware handles it,
+    // this layer just isn't allowed a bare `await`. Same as `admin-contact.service.ts`.
+    throw err;
+  }
+}
+
+/**
+ * Provisions a new end-user account by hand and returns it together with the
+ * one-time temporary password the caller must relay to the user. Mirrors
+ * `auth.service.ts`'s `signup` for the parts that matter (email-uniqueness
+ * check, argon2 hash, `UserProfile` row with `houseId`/`dietId` left `null`)
+ * but issues **no session token** — the operator isn't logging in as this
+ * user — and generates the password instead of accepting one.
+ *
+ * @throws {HttpError} `409 EMAIL_ALREADY_IN_USE` if the email is already taken.
+ */
+export async function createUserProfile(
+  input: AdminCreateUserInput,
+): Promise<AdminUserCreatedView> {
+  try {
+    const existing = await prisma.userProfile.findUnique({ where: { email: input.email } });
+    if (existing) {
+      throw new HttpError(409, ErrorCode.EMAIL_ALREADY_IN_USE, "Email already in use");
+    }
+
+    const temporaryPassword = generateTemporaryPassword();
+    const passwordHash = await argon2.hash(temporaryPassword, hashOptions);
+
+    const profile = await prisma.userProfile.create({
+      // No household/diet here, same as `signup` — the user picks those in the
+      // onboarding wizard after their first login.
+      data: {
+        firstName: input.firstName,
+        lastName: input.lastName,
+        email: input.email,
+        passwordHash,
+      },
+      include: { house: { select: { name: true } } },
+    });
+
+    // Fire-and-forget, one line, no migration (see `analytics.service.ts`). A
+    // distinct type from `user.signup` so the dashboard can tell hand-provisioned
+    // accounts apart; `actorType: "system"` because the actor is an operator, not
+    // the new user (and `AnalyticsEvent.actorId` only ever means a `UserProfile.id`).
+    analytics.recordEvent("admin.user_created", {
+      actorType: "system",
+      context: { userId: profile.id },
+    });
+
+    return { user: toListItem(profile), temporaryPassword };
+  } catch (err) {
+    throw err; // see listUsers()'s catch comment
+  }
+}

apps/api/src/modules/admin/admin.routes.ts

@@ -1,13 +1,32 @@
 import { Router } from "express";
 import { adminAuthRouter } from "./admin-auth.routes.js";
+import { adminCatalogRouter } from "./admin-catalog.routes.js";
+import { adminContactRouter } from "./admin-contact.routes.js";
+import { adminMetricsRouter } from "./admin-metrics.routes.js";
+import { adminTechStepsRouter } from "./admin-tech-steps.routes.js";
+import { adminToursRouter } from "./admin-tours.routes.js";
+import { adminUsersRouter } from "./admin-users.routes.js";
 
 /**
- * Aggregator for the admin application's API surface, mounted at `/admin`
+ * Aggregator for the admin application's API surface, mounted at
- * in `app.ts`. Every sub-router here is for `apps/admin-web` only —
+ * `/admin/api` in `app.ts` (not bare `/admin` — see that mount point's own
- * `/admin/auth` is public (login), everything added later
+ * comment for why: it would collide with apps/web's `/admin/*` page
- * (`/admin/metrics`, `/admin/monitoring`, `/admin/tech-steps/*`) sits
+ * routes). Every sub-router here backs one of those pages —
- * behind `requireAdmin` (`middlewares/require-admin.ts`).
+ * `/admin/api/auth` is public (login), everything added later
+ * (`/admin/api/metrics`, `/admin/api/tech-steps/*`, `/admin/api/catalog/*`)
+ * sits behind `requireAdmin` (`middlewares/require-admin.ts`).
+ *
+ * Monitoring has **no** REST route here on purpose — it's pushed over
+ * WebSocket instead (`lib/monitoring-broadcast.service.ts`, wired in
+ * `server.ts`), not requested per-page-load. See that service's doc
+ * comment for the full mechanism.
  */
 export const adminRouter = Router();
 
 adminRouter.use("/auth", adminAuthRouter);
+adminRouter.use("/metrics", adminMetricsRouter);
+adminRouter.use("/tech-steps", adminTechStepsRouter);
+adminRouter.use("/catalog", adminCatalogRouter);
+adminRouter.use("/tours", adminToursRouter);
+adminRouter.use("/contact", adminContactRouter);
+adminRouter.use("/users", adminUsersRouter);

apps/api/src/modules/auth/auth.routes.ts

@@ -1,5 +1,10 @@
 import { wrapAsyncHandler } from "@batch-cooking/express-tools";
-import { deleteAccountSchema, loginSchema, signupSchema } from "@batch-cooking/shared";
+import {
+  type AuthResponse,
+  deleteAccountSchema,
+  loginSchema,
+  signupSchema,
+} from "@batch-cooking/shared";
 import type { CookieOptions, Response } from "express";
 import { Router } from "express";
 import { env } from "../../config/env.js";
@@ -43,7 +48,11 @@ authRouter.post(
     const input = signupSchema.parse(req.body);
     const { profile, token } = await signup(input);
     res.cookie(env.AUTH_COOKIE_NAME, token, cookieOptions);
-    res.status(201).json(profile);
+    // Token is echoed in the body too, not just the cookie — see
+    // `AuthResponse` (packages/shared) for why (Capacitor WebView origin
+    // can't receive a SameSite cookie). Purely additive: every existing
+    // profile field stays exactly where it was.
+    res.status(201).json({ ...profile, token } satisfies AuthResponse);
   }),
 );
 
@@ -54,7 +63,7 @@ authRouter.post(
     const input = loginSchema.parse(req.body);
     const { profile, token } = await login(input);
     res.cookie(env.AUTH_COOKIE_NAME, token, cookieOptions);
-    res.status(200).json(profile);
+    res.status(200).json({ ...profile, token } satisfies AuthResponse);
   }),
 );
 

apps/api/src/modules/auth/auth.service.ts

@@ -8,6 +8,7 @@ import {
 import argon2 from "argon2";
 import { env } from "../../config/env.js";
 import { prisma } from "../../db/prisma.js";
+import { analytics } from "../../lib/analytics.service.js";
 import { signAuthToken } from "../../lib/jwt.js";
 import { toSafeProfile } from "../../lib/safe-profile.js";
 import { leaveCurrentHouse } from "../house/house.service.js";
@@ -58,6 +59,8 @@ export async function signup(input: SignupInput): Promise<AuthResult> {
       },
     });
 
+    analytics.recordEvent("user.signup", { actorId: profile.id });
+
     const token = signAuthToken({
       userProfileId: profile.id,
       tokenVersion: profile.tokenVersion,

apps/api/src/modules/contact/contact.routes.ts

@@ -0,0 +1,34 @@
+import { wrapAsyncHandler } from "@batch-cooking/express-tools";
+import { submitContactMessageSchema } from "@batch-cooking/shared";
+import { Router } from "express";
+import { type AuthLocals, requireAuth } from "../../middlewares/require-auth.js";
+import { submitContactMessage } from "./contact.service.js";
+
+/**
+ * Router mounted at `/contact` in app.ts (issue #80). A single endpoint —
+ * `POST /` — for the in-app "signaler un bug / suggestion" form. Requires a
+ * session: only signed-in users can send a message, so every report is
+ * attributable (see `ContactMessage.authorId`). The admin-side read of
+ * these rows lives entirely in the admin router, not here.
+ */
+export const contactRouter = Router();
+
+contactRouter.post(
+  "/",
+  requireAuth,
+  wrapAsyncHandler<unknown, AuthLocals>(async (req, res) => {
+    const input = submitContactMessageSchema.parse(req.body);
+    // Read the UA from the request, never from the body — the schema omits
+    // it on purpose so it can't be spoofed. Header can be an array or
+    // absent; normalize to `string | null`.
+    const rawUserAgent = req.headers["user-agent"];
+    const userAgent =
+      typeof rawUserAgent === "string" && rawUserAgent.length > 0 ? rawUserAgent : null;
+    await submitContactMessage(res.locals.userProfile.id, input, userAgent);
+    // 204, not 201-with-a-body: the form has nothing to do with the stored
+    // row, and the shared `ApiClient._request` treats only 204 as bodyless
+    // (a 201 with an empty body makes its `response.json()` throw). Same
+    // "mutation returns nothing" shape as `POST /auth/logout`.
+    res.status(204).end();
+  }),
+);

apps/api/src/modules/contact/contact.service.ts

@@ -0,0 +1,50 @@
+import type { SubmitContactMessageInput } from "@batch-cooking/shared";
+import { prisma } from "../../db/prisma.js";
+import { analytics } from "../../lib/analytics.service.js";
+
+/**
+ * Persists one contact-form submission (issue #80). Write-only from the
+ * user's side — there is no read/update/delete counterpart here: admins
+ * consult these rows through the admin app (`admin-contact.service.ts`, PR
+ * 2), never this module.
+ *
+ * `userAgent` comes straight from the request header, never the body — the
+ * shared `submitContactMessageSchema` deliberately omits it so the client
+ * can't spoof it. `pageUrl` / `appVersion` are client-supplied context and
+ * default to `null` when the (older, or non-web) client didn't send them.
+ *
+ * Returns nothing: the form only needs to know the write succeeded (a
+ * `201`), not the stored row.
+ */
+export async function submitContactMessage(
+  authorId: number,
+  input: SubmitContactMessageInput,
+  userAgent: string | null,
+): Promise<void> {
+  try {
+    await prisma.contactMessage.create({
+      data: {
+        authorId,
+        type: input.type,
+        message: input.message,
+        pageUrl: input.pageUrl ?? null,
+        userAgent,
+        appVersion: input.appVersion ?? null,
+      },
+    });
+    // Fire-and-forget (see AnalyticsService's contract) — `admin-metrics`
+    // aggregates `AnalyticsEvent` by `type` generically, so this shows up in
+    // the dashboard series with no extra code; `context.type` lets it be
+    // broken down by bug/suggestion/other.
+    analytics.recordEvent("contact.submitted", {
+      actorType: "user",
+      actorId: authorId,
+      context: { type: input.type },
+    });
+  } catch (err) {
+    // Rethrown as-is — `wrapAsyncHandler` / the error middleware (which
+    // already logs it) handles it; this service layer just isn't allowed a
+    // bare `await` per the repo's async/try-catch convention.
+    throw err;
+  }
+}

apps/api/src/modules/cooking-session/cooking-session.routes.ts

@@ -0,0 +1,37 @@
+import { parseDateOnly } from "@batch-cooking/date-tools";
+import { HttpError } from "@batch-cooking/error-tools";
+import { wrapAsyncHandler } from "@batch-cooking/express-tools";
+import { ErrorCode, getCookingSessionSchema } from "@batch-cooking/shared";
+import { Router } from "express";
+import { type AuthLocals, requireAuth } from "../../middlewares/require-auth.js";
+import { getCookingPlanForDate } from "./cooking-session.service.js";
+
+/** Router mounted at `/cooking-session` in app.ts. */
+export const cookingSessionRouter = Router();
+
+/**
+ * Returns the authenticated user's household's optimized cooking plan for
+ * the week covering `?date=` (`YYYY-MM-DD`) — every recipe planned that
+ * week reorganized into ordered phases (see {@link getCookingPlanForDate}).
+ * Always `200`, never `null` — no household or nothing planned that week
+ * both come back as a normal `OptimizedCookingPlanView` with empty
+ * `recipes`/`phases`. Same request contract as `GET /shopping-list`.
+ */
+cookingSessionRouter.get(
+  "/",
+  requireAuth,
+  wrapAsyncHandler<unknown, AuthLocals>(async (req, res) => {
+    const input = getCookingSessionSchema.parse(req.query);
+    const date = parseDateOnly(input.date);
+    if (date === null) {
+      throw new HttpError(
+        400,
+        ErrorCode.VALIDATION_ERROR,
+        `Not a real calendar date: ${input.date}`,
+      );
+    }
+
+    const plan = await getCookingPlanForDate(res.locals.userProfile.houseId, date);
+    res.status(200).json(plan);
+  }),
+);

apps/api/src/modules/cooking-session/cooking-session.service.ts

@@ -0,0 +1,192 @@
+import { type DateTime, getWeekStart, toDateOnly } from "@batch-cooking/date-tools";
+import type { CookingTaskIngredientView, OptimizedCookingPlanView } from "@batch-cooking/shared";
+import type { Prisma } from "@prisma/client";
+import { prisma } from "../../db/prisma.js";
+import {
+  type OptimizerRecipeInput,
+  type OptimizerStepInput,
+  optimizeCookingPlan,
+} from "../../lib/recipe-matching/cooking-optimizer.js";
+import { toIngredientView, toUnitView } from "../recipe/recipe.service.js";
+
+/**
+ * Prisma `include` for a `Planning` query that needs, for every item, its
+ * recipe's ordered steps with the full detected-technique tree — the raw
+ * material the optimizer works on (see `cooking-optimizer.ts`). It's the
+ * `steps` sub-tree of `recipe.service.ts`'s own `recipeInclude`, resolved
+ * the same way so {@link toIngredientView}/{@link toUnitView} can be reused
+ * as-is; deliberately narrower than a full `RecipeView` fetch (no
+ * diets/favorites/recipe-level ingredient list — the optimizer reads
+ * quantities off the technique clauses, not the recipe header).
+ */
+function cookingSessionPlanningInclude() {
+  return {
+    items: {
+      // A "leftovers" item (`sourcePlanningItemId` set) reserves part of an
+      // already-cooked batch — it has nothing to cook, so it must not enter
+      // the optimized cooking plan (issue #34). Excluded at the query so it
+      // never reaches `toOptimizerRecipe`.
+      where: { sourcePlanningItemId: null },
+      include: {
+        recipe: {
+          select: {
+            id: true,
+            name: true,
+            portions: true,
+            steps: {
+              orderBy: { order: "asc" },
+              include: {
+                techSteps: {
+                  orderBy: { order: "asc" },
+                  include: {
+                    techStep: true,
+                    ingredients: {
+                      include: {
+                        ingredient: {
+                          include: {
+                            allergies: { include: { allergy: { include: { category: true } } } },
+                            diets: { include: { diet: true } },
+                          },
+                        },
+                        unit: true,
+                      },
+                    },
+                    utensils: { include: { utensil: true } },
+                    temperatures: true,
+                  },
+                },
+              },
+            },
+          },
+        },
+      },
+    },
+  } satisfies Prisma.PlanningInclude;
+}
+
+type PlanningWithSteps = Prisma.PlanningGetPayload<{
+  include: ReturnType<typeof cookingSessionPlanningInclude>;
+}>;
+type PlanningItemWithSteps = PlanningWithSteps["items"][number];
+
+/**
+ * Maps one planning item's recipe (with {@link cookingSessionPlanningInclude})
+ * to the optimizer's pure input shape — ingredient/unit/technique/utensil
+ * rows resolved to their reference views here so the optimizer itself never
+ * touches Prisma. `Decimal` quantities become plain numbers (same
+ * `Number(...)` conversion as `recipe.service.ts`'s own view mappers); an
+ * unresolved-unit line keeps `unit: null`.
+ */
+function toOptimizerRecipe(item: PlanningItemWithSteps): OptimizerRecipeInput {
+  const steps: OptimizerStepInput[] = item.recipe.steps.map((step) => ({
+    stepId: step.id,
+    order: step.order,
+    description: step.description,
+    techSteps: step.techSteps.map((techStep) => {
+      const ingredients: CookingTaskIngredientView[] = techStep.ingredients.map((line) => ({
+        ingredient: toIngredientView(line.ingredient),
+        quantity: line.quantity === null ? null : Number(line.quantity),
+        unit: line.unit === null ? null : toUnitView(line.unit),
+      }));
+      return {
+        techStep: {
+          id: techStep.techStep.id,
+          key: techStep.techStep.key,
+          isPlaceholder: techStep.techStep.isPlaceholder,
+          displayName: techStep.techStep.displayName,
+        },
+        order: techStep.order,
+        ingredients,
+        utensils: techStep.utensils.map(({ utensil }) => ({ id: utensil.id, key: utensil.key })),
+        // Structured value only — `Decimal` °C → plain number, `qualitative`
+        // re-narrowed to the literal union (same posture as
+        // `recipe.service.ts`'s `toStepTechStepViews`).
+        temperatures: techStep.temperatures.map((temperature) => ({
+          celsius: temperature.celsius === null ? null : Number(temperature.celsius),
+          gasMark: temperature.gasMark,
+          qualitative:
+            temperature.qualitative === "low" ||
+            temperature.qualitative === "medium" ||
+            temperature.qualitative === "high"
+              ? temperature.qualitative
+              : null,
+        })),
+      };
+    }),
+  }));
+
+  return {
+    recipeId: item.recipe.id,
+    name: item.recipe.name,
+    // The slot's own portion count vs. the recipe's as-written yield — the
+    // optimizer scales technique-clause quantities by the ratio, same
+    // reasoning as `shopping-list.service.ts`'s `aggregateShoppingList`.
+    portions: item.portions,
+    recipePortions: item.recipe.portions,
+    steps,
+  };
+}
+
+/**
+ * Builds the household's optimized cooking plan for the week covering
+ * `date` — every recipe planned that week, reorganized into ordered phases
+ * that pool shared prep and float passive cooks into the background (see
+ * `cooking-optimizer.ts`). `date` follows the same convention as
+ * `planning.service.ts`'s `getPlanningForDate` (a caller-parsed `?date=`,
+ * not necessarily a Monday).
+ *
+ * Like `getShoppingListForDate` and unlike `getPlanningForDate`, this
+ * **never** returns `null` — no household and "no planning covers this week
+ * yet" both degrade to an empty `phases`/`recipes` on an otherwise normal
+ * {@link OptimizedCookingPlanView} (the week's date range is always
+ * computable from `date` alone).
+ */
+export async function getCookingPlanForDate(
+  houseId: number | null,
+  date: DateTime,
+): Promise<OptimizedCookingPlanView> {
+  try {
+    const weekStart = getWeekStart(toDateOnly(date));
+    const weekFinish = weekStart.plus({ days: 6 });
+    const emptyPlan: OptimizedCookingPlanView = {
+      startDate: weekStart.toJSDate().toISOString(),
+      finishDate: weekFinish.toJSDate().toISOString(),
+      recipes: [],
+      phases: [],
+    };
+
+    if (houseId === null) {
+      return emptyPlan;
+    }
+
+    // Same "covering range" lookup as getShoppingListForDate — see
+    // getPlanningForDate's doc comment for the UTC-midnight `Date` rationale.
+    const dateOnly = toDateOnly(date).toJSDate();
+    const planning = await prisma.planning.findFirst({
+      where: {
+        houseId,
+        startDate: { lte: dateOnly },
+        finishDate: { gte: dateOnly },
+      },
+      orderBy: { startDate: "desc" },
+      include: cookingSessionPlanningInclude(),
+    });
+
+    if (!planning) {
+      return emptyPlan;
+    }
+
+    const { recipes, phases } = optimizeCookingPlan(planning.items.map(toOptimizerRecipe));
+    return {
+      startDate: planning.startDate.toISOString(),
+      finishDate: planning.finishDate.toISOString(),
+      recipes,
+      phases,
+    };
+  } catch (err) {
+    // Rethrown as-is — `wrapAsyncHandler`/the error middleware handles it,
+    // this service layer just isn't allowed a bare `await` per the repo's
+    // async/try-catch convention.
+    throw err;
+  }
+}

apps/api/src/modules/internal/tech-step-worker.routes.ts

@@ -3,12 +3,14 @@ import {
   auditBatchQuerySchema,
   submitTrainingSuggestionsSchema,
   workerBatchQuerySchema,
+  workerHeartbeatSchema,
 } from "@batch-cooking/shared";
 import { Router } from "express";
 import { requireInternalWorker } from "../../middlewares/require-internal-worker.js";
 import {
   getAuditBatch,
   getPendingCorrections,
+  recordWorkerHeartbeat,
   submitTrainingSuggestions,
 } from "./tech-step-worker.service.js";
 
@@ -47,3 +49,19 @@ techStepWorkerRouter.post(
     res.status(201).json(await submitTrainingSuggestions(input));
   }),
 );
+
+/**
+ * Liveness ping from the worker (which has no inbound HTTP surface of its
+ * own) — upserts its `WorkerHeartbeat` row so the admin monitoring board
+ * can show it as up / stale / down and surface its last job result. Sent
+ * on boot, on every scheduler tick, and after each job.
+ */
+techStepWorkerRouter.post(
+  "/heartbeat",
+  requireInternalWorker,
+  wrapAsyncHandler(async (req, res) => {
+    const input = workerHeartbeatSchema.parse(req.body);
+    await recordWorkerHeartbeat(input);
+    res.status(200).json({ ok: true });
+  }),
+);

apps/api/src/modules/internal/tech-step-worker.service.ts

@@ -4,7 +4,9 @@ import {
   type PendingTechStepCorrectionView,
   type SubmitTrainingSuggestionsInput,
   type TechStepAuditClauseView,
+  type WorkerHeartbeatInput,
 } from "@batch-cooking/shared";
+import type { Prisma } from "@prisma/client";
 import { prisma } from "../../db/prisma.js";
 import {
   CONFIDENCE_THRESHOLD,
@@ -199,3 +201,44 @@ export async function submitTrainingSuggestions(
     throw err; // see recipe.service.ts's equivalent catch comment
   }
 }
+
+/**
+ * The one worker with a `WorkerHeartbeat` row today — a fixed key, not
+ * something the caller supplies (only one worker exists, and letting it
+ * name itself would just be a spoofing surface behind the same shared
+ * secret).
+ */
+const WORKER_KEY = "tech-step-llm-worker";
+
+/**
+ * Upserts `services/tech-step-llm-worker`'s heartbeat row (see
+ * `POST /internal/tech-steps/heartbeat`). Every ping bumps `lastSeenAt`; a
+ * `"job"` ping also records `lastRunAt` + a small `lastResult` summary so
+ * the admin monitoring board can show what the worker last did and whether
+ * it worked.
+ */
+export async function recordWorkerHeartbeat(input: WorkerHeartbeatInput): Promise<void> {
+  try {
+    const now = new Date();
+    const jobResult: Prisma.InputJsonValue | undefined =
+      input.event === "job"
+        ? { job: input.job ?? null, ok: input.ok ?? null, counts: input.counts ?? {} }
+        : undefined;
+
+    await prisma.workerHeartbeat.upsert({
+      where: { workerKey: WORKER_KEY },
+      create: {
+        workerKey: WORKER_KEY,
+        lastSeenAt: now,
+        lastRunAt: input.event === "job" ? now : null,
+        lastResult: jobResult,
+      },
+      update: {
+        lastSeenAt: now,
+        ...(input.event === "job" ? { lastRunAt: now, lastResult: jobResult } : {}),
+      },
+    });
+  } catch (err) {
+    throw err; // see recipe.service.ts's equivalent catch comment
+  }
+}

apps/api/src/modules/mobile/mobile.routes.ts

@@ -0,0 +1,31 @@
+import { wrapAsyncHandler } from "@batch-cooking/express-tools";
+import { Router } from "express";
+import { getLatestApkUrl, getLatestVersion } from "./mobile.service.js";
+
+/**
+ * Router mounted at `/mobile` in app.ts. Both routes are deliberately
+ * public (no `requireAuth`): the landing page's download link is shown to
+ * logged-out visitors, and the native update check (issue #66) runs on
+ * every app start, session or not. Both exist purely to work around
+ * Forgejo's Releases API sending no CORS headers — see `mobile.service.ts`'s
+ * own doc comment for the full story.
+ */
+export const mobileRouter = Router();
+
+mobileRouter.get(
+  "/latest-release",
+  wrapAsyncHandler(async (_req, res) => {
+    res.status(200).json({ version: await getLatestVersion() });
+  }),
+);
+
+// A plain redirect, not JSON — lets any caller (the landing page's `<a>`,
+// the update banner's "Mettre à jour" link) use a static href with zero
+// client-side fetch, and always resolves to something useful even if
+// Forgejo is briefly unreachable (see getLatestApkUrl's fallback).
+mobileRouter.get(
+  "/download",
+  wrapAsyncHandler(async (_req, res) => {
+    res.redirect(302, await getLatestApkUrl());
+  }),
+);

apps/api/src/modules/mobile/mobile.service.ts

@@ -0,0 +1,75 @@
+import { HttpError } from "@batch-cooking/error-tools";
+import { ErrorCode } from "@batch-cooking/shared";
+
+/**
+ * Forgejo's own Releases API for this repo — public, unauthenticated (the
+ * same fact `local-verification-while-ci-disabled` already leans on for
+ * CI-status checks without a token). **Must be called server-side, not
+ * from the browser**: verified live that Forgejo sends no
+ * `Access-Control-Allow-Origin` header on it, so a direct `fetch()` from
+ * `apps/web` fails with an opaque CORS error even though the endpoint
+ * itself is perfectly reachable — this whole module exists to proxy it
+ * from a context CORS doesn't apply to.
+ */
+const LATEST_RELEASE_API_URL =
+  "https://git.dev.kyuno.fr/api/v1/repos/kyuno/batchCooking/releases/latest";
+
+/**
+ * Human-facing Forgejo release page — safe fallback for {@link getLatestApkUrl}
+ * when no matching asset is found (a release with nothing attached yet,
+ * Forgejo briefly unreachable, ...). Never a dead link, just a slightly
+ * less direct one: the visitor lands on the release itself and can find
+ * the asset from there.
+ */
+const LATEST_RELEASE_PAGE_URL = "https://git.dev.kyuno.fr/kyuno/batchCooking/releases/latest";
+
+/** Stable filename `release.yml` always attaches the signed APK under — see that workflow's own comment. */
+const APK_ASSET_NAME = "batchcooking.apk";
+
+interface ForgejoReleaseAsset {
+  name: string;
+  browser_download_url: string;
+}
+
+interface ForgejoRelease {
+  tag_name: string;
+  assets: ForgejoReleaseAsset[];
+}
+
+async function fetchLatestRelease(): Promise<ForgejoRelease> {
+  const response = await fetch(LATEST_RELEASE_API_URL);
+  if (!response.ok) {
+    throw new HttpError(
+      502,
+      ErrorCode.INTERNAL_ERROR,
+      `Forgejo releases API responded ${response.status}`,
+    );
+  }
+  return (await response.json()) as ForgejoRelease;
+}
+
+/**
+ * The latest tagged Android build's version (e.g. `"v1.4.2"`) — used by the
+ * native app's update check (issue #66, `useAppUpdateCheck.ts`).
+ */
+export async function getLatestVersion(): Promise<string> {
+  const release = await fetchLatestRelease();
+  return release.tag_name;
+}
+
+/**
+ * Where a "download the app" click should end up right now: the actual
+ * signed-APK asset of the latest release if one is attached, else
+ * {@link LATEST_RELEASE_PAGE_URL} as a safe fallback. Never throws — a
+ * download link must always go *somewhere* useful, even when Forgejo is
+ * briefly unreachable.
+ */
+export async function getLatestApkUrl(): Promise<string> {
+  try {
+    const release = await fetchLatestRelease();
+    const apk = release.assets.find((asset) => asset.name === APK_ASSET_NAME);
+    return apk?.browser_download_url ?? LATEST_RELEASE_PAGE_URL;
+  } catch {
+    return LATEST_RELEASE_PAGE_URL;
+  }
+}

apps/api/src/modules/planning/planning.routes.ts

@@ -1,10 +1,21 @@
 import { parseDateOnly } from "@batch-cooking/date-tools";
 import { HttpError } from "@batch-cooking/error-tools";
 import { wrapAsyncHandler } from "@batch-cooking/express-tools";
-import { addPlanningItemSchema, ErrorCode, getPlanningByDateSchema } from "@batch-cooking/shared";
+import {
+  addPlanningItemSchema,
+  assignLeftoverSchema,
+  ErrorCode,
+  getPlanningByDateSchema,
+} from "@batch-cooking/shared";
 import { Router } from "express";
 import { type AuthLocals, requireAuth } from "../../middlewares/require-auth.js";
-import { addPlanningItem, getPlanningForDate, removePlanningItem } from "./planning.service.js";
+import {
+  addPlanningItem,
+  assignLeftoverPlanningItem,
+  discardLeftover,
+  getPlanningForDate,
+  removePlanningItem,
+} from "./planning.service.js";
 
 /** Router mounted at `/planning` in app.ts. */
 export const planningRouter = Router();
@@ -69,6 +80,44 @@ planningRouter.post(
   }),
 );
 
+/**
+ * Serves part of another planning item's leftover pool on a slot — creates
+ * a "leftovers" `PlanningItem` (see {@link assignLeftoverPlanningItem}).
+ * `POST /items/leftover`, not `/items/:id/...`: the `:id` here would be the
+ * *target* slot, which doesn't exist yet — the source is in the body.
+ */
+planningRouter.post(
+  "/items/leftover",
+  requireAuth,
+  wrapAsyncHandler<unknown, AuthLocals>(async (req, res) => {
+    const input = assignLeftoverSchema.parse(req.body);
+    const date = parseDateOnly(input.date);
+    if (date === null) {
+      throw new HttpError(
+        400,
+        ErrorCode.VALIDATION_ERROR,
+        `Not a real calendar date: ${input.date}`,
+      );
+    }
+
+    const { id: viewerId, houseId } = res.locals.userProfile;
+    const item = await assignLeftoverPlanningItem(houseId, viewerId, date, input);
+    res.status(201).json(item);
+  }),
+);
+
+/** Throws away item `:id`'s whole remaining leftover pool (idempotent — see {@link discardLeftover}). */
+planningRouter.patch(
+  "/items/:id/discard-leftover",
+  requireAuth,
+  wrapAsyncHandler<unknown, AuthLocals>(async (req, res) => {
+    const id = parsePlanningItemId(req.params.id);
+    const { id: viewerId, houseId } = res.locals.userProfile;
+    const item = await discardLeftover(id, viewerId, houseId);
+    res.status(200).json(item);
+  }),
+);
+
 /** Removes one recipe from a planning slot. */
 planningRouter.delete(
   "/items/:id",

apps/api/src/modules/planning/planning.service.ts

@@ -2,13 +2,46 @@ import { type DateTime, getWeekStart, toDateOnly } from "@batch-cooking/date-too
 import { HttpError } from "@batch-cooking/error-tools";
 import {
   type AddPlanningItemInput,
+  type AssignLeftoverInput,
+  computeAvailableLeftover,
+  computeBatchedPortions,
   ErrorCode,
   type PlanningItemView,
   type PlanningView,
 } from "@batch-cooking/shared";
 import { prisma } from "../../db/prisma.js";
+import { analytics } from "../../lib/analytics.service.js";
 import { assertRecipeVisible } from "../recipe/recipe.service.js";
 
+/**
+ * One `PlanningItem` row (with its recipe resolved to `{id, name}`) shaped
+ * into the wire {@link PlanningItemView}. The three read/write paths below
+ * that return an item — `getPlanningForDate`, `addPlanningItem`,
+ * `assignLeftoverPlanningItem`, `discardLeftover` — all go through this so
+ * the shape is defined once.
+ */
+function toPlanningItemView(item: {
+  id: number;
+  weekDay: string;
+  meal: string;
+  portions: number;
+  portionsRequested: number;
+  discardedPortions: number;
+  sourcePlanningItemId: number | null;
+  recipe: { id: number; name: string };
+}): PlanningItemView {
+  return {
+    id: item.id,
+    weekDay: item.weekDay,
+    meal: item.meal,
+    portions: item.portions,
+    portionsRequested: item.portionsRequested,
+    discardedPortions: item.discardedPortions,
+    sourceItem: item.sourcePlanningItemId !== null ? { id: item.sourcePlanningItemId } : null,
+    recipe: item.recipe,
+  };
+}
+
 /**
  * Finds the household's planning that covers `date` and shapes it into a
  * {@link PlanningView} (recipes resolved to `{id, name}`). `date` is
@@ -63,13 +96,7 @@ export async function getPlanningForDate(
       id: planning.id,
       startDate: planning.startDate.toISOString(),
       finishDate: planning.finishDate.toISOString(),
-      items: planning.items.map((item) => ({
+      items: planning.items.map(toPlanningItemView),
-        id: item.id,
-        weekDay: item.weekDay,
-        meal: item.meal,
-        portions: item.portions,
-        recipe: item.recipe,
-      })),
     };
   } catch (err) {
     // Rethrown as-is — `wrapAsyncHandler`/the error middleware (which
@@ -143,6 +170,18 @@ export async function addPlanningItem(
     }
     await assertRecipeVisible(input.recipeId, viewerId, viewerHouseId);
 
+    // `assertRecipeVisible` already guaranteed the recipe exists and is
+    // visible — this second read just pulls its written yield, needed to
+    // turn "portions requested" into "portions to actually prepare"
+    // (a whole number of batches, see `computeBatchedPortions`). The
+    // `?? 1` never triggers in practice (the assert above threw otherwise);
+    // it only keeps TypeScript happy about `findUnique`'s `| null`.
+    const recipe = await prisma.recipe.findUnique({
+      where: { id: input.recipeId },
+      select: { portions: true },
+    });
+    const { portions } = computeBatchedPortions(recipe?.portions ?? 1, input.portionsRequested);
+
     const weekStart = getWeekStart(toDateOnly(date));
     const planning = await findOrCreatePlanningForWeek(houseId, weekStart);
 
@@ -152,18 +191,22 @@ export async function addPlanningItem(
         weekDay: input.weekDay,
         meal: input.meal,
         recipeId: input.recipeId,
-        portions: input.portions,
+        portions,
+        portionsRequested: input.portionsRequested,
       },
       include: { recipe: { select: { id: true, name: true } } },
     });
 
-    return {
+    analytics.recordEvent("planning.item_added", {
-      id: item.id,
+      actorId: viewerId,
-      weekDay: item.weekDay,
+      context: {
-      meal: item.meal,
+        recipeId: input.recipeId,
-      portions: item.portions,
+        portions,
-      recipe: item.recipe,
+        portionsRequested: input.portionsRequested,
-    };
+      },
+    });
+
+    return toPlanningItemView(item);
   } catch (err) {
     throw err; // see getPlanningForDate()'s catch comment above
   }
@@ -191,3 +234,139 @@ export async function removePlanningItem(id: number, houseId: number | null): Pr
     throw err; // see getPlanningForDate()'s catch comment above
   }
 }
+
+/**
+ * Loads a `PlanningItem` (scoped to `houseId`) with everything
+ * {@link computeAvailableLeftover} needs — its own portion fields plus how
+ * much of its pool has already been served elsewhere (`leftoverUses`) — or
+ * throws `404 PLANNING_ITEM_NOT_FOUND` (same "don't confirm what exists"
+ * posture as `removePlanningItem`). Shared by
+ * {@link assignLeftoverPlanningItem} and {@link discardLeftover}.
+ */
+async function loadItemWithLeftoverPool(id: number, houseId: number | null) {
+  const item = await prisma.planningItem.findUnique({
+    where: { id },
+    include: {
+      planning: { select: { houseId: true } },
+      leftoverUses: { select: { portions: true } },
+      recipe: { select: { id: true, name: true } },
+    },
+  });
+  if (!item || houseId === null || item.planning.houseId !== houseId) {
+    throw new HttpError(404, ErrorCode.PLANNING_ITEM_NOT_FOUND, `Planning item ${id} not found`);
+  }
+  return item;
+}
+
+/**
+ * Serves `input.portions` of another item's leftover pool on the
+ * `(date, weekDay, meal)` slot — creates a "leftovers" `PlanningItem`
+ * (`sourcePlanningItemId` set) on the same recipe as its source. Nothing
+ * new is cooked for it, so `portions === portionsRequested` and it excludes
+ * itself from the shopping list / cooking session (see those services'
+ * `where: { sourcePlanningItemId: null }`).
+ *
+ * The source's `recipeId` is copied, never taken from the client (a
+ * leftovers item can only be its source's recipe). `input.portions` is
+ * re-checked against the pool actually still available
+ * ({@link computeAvailableLeftover}) — trusting a client value here would
+ * let a household conjure portions it never cooked.
+ *
+ * @throws {HttpError} `404 HOUSE_NOT_FOUND` if `houseId` is `null`.
+ * @throws {HttpError} `404 PLANNING_ITEM_NOT_FOUND` if `sourceItemId` doesn't exist, belongs to another household, or is itself a leftovers item (no leftovers-on-leftovers).
+ * @throws {HttpError} `409 LEFTOVER_QUANTITY_EXCEEDED` if `portions` exceeds the source's still-available pool.
+ */
+export async function assignLeftoverPlanningItem(
+  houseId: number | null,
+  viewerId: number,
+  date: DateTime,
+  input: AssignLeftoverInput,
+): Promise<PlanningItemView> {
+  try {
+    if (houseId === null) {
+      throw new HttpError(404, ErrorCode.HOUSE_NOT_FOUND, "Profile has no household");
+    }
+
+    const source = await loadItemWithLeftoverPool(input.sourceItemId, houseId);
+    if (source.sourcePlanningItemId !== null) {
+      // A leftovers item has no pool of its own — serving leftovers cooks
+      // nothing, so it can't be a source for more.
+      throw new HttpError(
+        404,
+        ErrorCode.PLANNING_ITEM_NOT_FOUND,
+        `Planning item ${input.sourceItemId} is not a leftovers source`,
+      );
+    }
+
+    const available = computeAvailableLeftover(source);
+    if (input.portions > available) {
+      throw new HttpError(
+        409,
+        ErrorCode.LEFTOVER_QUANTITY_EXCEEDED,
+        `Item ${source.id} has ${available} leftover portion(s) available, asked for ${input.portions}`,
+      );
+    }
+
+    const weekStart = getWeekStart(toDateOnly(date));
+    const planning = await findOrCreatePlanningForWeek(houseId, weekStart);
+
+    const item = await prisma.planningItem.create({
+      data: {
+        planningId: planning.id,
+        weekDay: input.weekDay,
+        meal: input.meal,
+        recipeId: source.recipeId,
+        portions: input.portions,
+        portionsRequested: input.portions,
+        sourcePlanningItemId: source.id,
+      },
+      include: { recipe: { select: { id: true, name: true } } },
+    });
+
+    analytics.recordEvent("planning.leftover_assigned", {
+      actorId: viewerId,
+      context: { recipeId: source.recipeId, portions: input.portions, sourceItemId: source.id },
+    });
+
+    return toPlanningItemView(item);
+  } catch (err) {
+    throw err; // see getPlanningForDate()'s catch comment above
+  }
+}
+
+/**
+ * Throws away the whole still-available leftover pool of item `id`
+ * (`discardedPortions += available`) — the basket's "jeter" button.
+ * Idempotent: an item with nothing left to discard is returned unchanged,
+ * no event recorded.
+ *
+ * @throws {HttpError} `404 PLANNING_ITEM_NOT_FOUND` — same guard as `removePlanningItem`.
+ */
+export async function discardLeftover(
+  id: number,
+  viewerId: number,
+  houseId: number | null,
+): Promise<PlanningItemView> {
+  try {
+    const item = await loadItemWithLeftoverPool(id, houseId);
+    const available = computeAvailableLeftover(item);
+    if (available === 0) {
+      return toPlanningItemView(item);
+    }
+
+    const updated = await prisma.planningItem.update({
+      where: { id },
+      data: { discardedPortions: item.discardedPortions + available },
+      include: { recipe: { select: { id: true, name: true } } },
+    });
+
+    analytics.recordEvent("planning.leftover_discarded", {
+      actorId: viewerId,
+      context: { recipeId: item.recipe.id, portions: available },
+    });
+
+    return toPlanningItemView(updated);
+  } catch (err) {
+    throw err; // see getPlanningForDate()'s catch comment above
+  }
+}

apps/api/src/modules/profile/profile.routes.ts

@@ -1,5 +1,9 @@
+import { HttpError } from "@batch-cooking/error-tools";
 import { wrapAsyncHandler } from "@batch-cooking/express-tools";
 import {
+  type CompletedToursView,
+  completeTourSchema,
+  ErrorCode,
   updateAllergiesSchema,
   updateDietSchema,
   updateDislikedIngredientsSchema,
@@ -8,7 +12,9 @@ import { Router } from "express";
 import { type AuthLocals, requireAuth } from "../../middlewares/require-auth.js";
 import {
   getAllergyIds,
+  getCompletedTourKeys,
   getDislikedIngredientIds,
+  markTourSeen,
   updateAllergies,
   updateDiet,
   updateDislikedIngredients,
@@ -17,6 +23,14 @@ import {
 /** Router mounted at `/profile` in app.ts. Every route requires a session — this is the authenticated user's own profile. */
 export const profileRouter = Router();
 
+/** Express types a route param `string | undefined` even for a segment that always matches when the route does — satisfies TS, unreachable in practice. */
+function requireParam(value: string | undefined): string {
+  if (value === undefined) {
+    throw new HttpError(400, ErrorCode.VALIDATION_ERROR, "Missing route parameter");
+  }
+  return value;
+}
+
 /** The regime step of the profile journey (signup wizard and the `/foyer` settings page both call this). */
 profileRouter.patch(
   "/diet",
@@ -70,3 +84,29 @@ profileRouter.patch(
     res.status(200).json(ids);
   }),
 );
+
+/** Which guided-tour scenarios this profile has already seen — the web tour engine reads this once per session (issues #42/#44). */
+profileRouter.get(
+  "/tours",
+  requireAuth,
+  wrapAsyncHandler<unknown, AuthLocals>(async (_req, res) => {
+    const completedTourKeys = await getCompletedTourKeys(res.locals.userProfile.id);
+    res.status(200).json({ completedTourKeys } satisfies CompletedToursView);
+  }),
+);
+
+/**
+ * Marks a guided-tour scenario as seen — idempotent. An empty body means
+ * "completed"; `{ "skipped": true }` means the user dismissed it (different
+ * analytics event, same "don't re-nag" effect). 404s on an unknown/disabled
+ * tour key.
+ */
+profileRouter.post(
+  "/tours/:tourKey/complete",
+  requireAuth,
+  wrapAsyncHandler<unknown, AuthLocals>(async (req, res) => {
+    const { skipped } = completeTourSchema.parse(req.body ?? {});
+    await markTourSeen(res.locals.userProfile.id, requireParam(req.params.tourKey), skipped);
+    res.status(204).end();
+  }),
+);

apps/api/src/modules/profile/profile.service.ts

@@ -1,6 +1,7 @@
 import { HttpError } from "@batch-cooking/error-tools";
 import { ErrorCode, type SafeUserProfile } from "@batch-cooking/shared";
 import { prisma } from "../../db/prisma.js";
+import { analytics } from "../../lib/analytics.service.js";
 import { toSafeProfile } from "../../lib/safe-profile.js";
 
 /**
@@ -149,3 +150,57 @@ export async function updateDislikedIngredients(
     throw err; // see updateDiet()'s catch comment above
   }
 }
+
+/**
+ * The `key`s of every guided-tour scenario this profile has already seen
+ * (completed or skipped — both leave a `TourProgress` row). The web tour
+ * engine reads this once per session to decide which tours to auto-start
+ * (issues #42/#44).
+ */
+export async function getCompletedTourKeys(userProfileId: number): Promise<string[]> {
+  try {
+    const rows = await prisma.tourProgress.findMany({
+      where: { userProfileId },
+      select: { scenario: { select: { key: true } } },
+    });
+    return rows.map((row) => row.scenario.key);
+  } catch (err) {
+    throw err; // see updateDiet()'s catch comment above
+  }
+}
+
+/**
+ * Marks a guided-tour scenario as seen by this profile — idempotent upsert,
+ * safe to call again (e.g. the engine retries after a flaky network). Emits
+ * `tour.completed` or `tour.skipped` for the admin dashboard (issue #44's
+ * analytics — the dashboard renders any new `AnalyticsEvent` type
+ * generically, no frontend change needed).
+ *
+ * @throws {HttpError} `404 TOUR_NOT_FOUND` if `tourKey` doesn't match an
+ *   **enabled** `TourScenario` (a disabled tour can't be completed).
+ */
+export async function markTourSeen(
+  userProfileId: number,
+  tourKey: string,
+  skipped: boolean,
+): Promise<void> {
+  try {
+    const scenario = await prisma.tourScenario.findUnique({ where: { key: tourKey } });
+    if (!scenario?.enabled) {
+      throw new HttpError(404, ErrorCode.TOUR_NOT_FOUND, `No enabled tour with key ${tourKey}`);
+    }
+
+    await prisma.tourProgress.upsert({
+      where: { userProfileId_scenarioId: { userProfileId, scenarioId: scenario.id } },
+      update: {},
+      create: { userProfileId, scenarioId: scenario.id },
+    });
+
+    analytics.recordEvent(skipped ? "tour.skipped" : "tour.completed", {
+      actorId: userProfileId,
+      context: { tourKey },
+    });
+  } catch (err) {
+    throw err; // see updateDiet()'s catch comment above
+  }
+}

apps/api/src/modules/recipe/recipe-tech-step-correction.service.ts

@@ -1,3 +1,4 @@
+import { randomUUID } from "node:crypto";
 import { HttpError } from "@batch-cooking/error-tools";
 import {
   ErrorCode,
@@ -7,6 +8,7 @@ import {
 } from "@batch-cooking/shared";
 import type { Prisma } from "@prisma/client";
 import { prisma } from "../../db/prisma.js";
+import { analytics } from "../../lib/analytics.service.js";
 import { assertRecipeVisible, toStepTechStepViews } from "./recipe.service.js";
 
 /**
@@ -31,22 +33,24 @@ const correctionInclude = {
 } satisfies Prisma.StepTechStepCorrectionInclude;
 
 /**
- * Loads `stepId`'s current `description` length (the only thing a
+ * Loads `stepId`'s current `description` (a correction needs its full text
- * correction needs from the step itself), or throws — `404 STEP_NOT_FOUND`
+ * now, not just its length — see {@link submitTechStepCorrection}'s
- * if no such step exists, or if it exists but doesn't belong to `recipeId`
+ * `raw` derivation for a manual temperature mention), or throws —
- * (the route's own `:id`/`:stepId` nesting is meaningless otherwise — a
+ * `404 STEP_NOT_FOUND` if no such step exists, or if it exists but doesn't
- * request naming a real step under the wrong recipe should look identical
+ * belong to `recipeId` (the route's own `:id`/`:stepId` nesting is
- * to naming one that doesn't exist, same "don't leak which part was wrong"
+ * meaningless otherwise — a request naming a real step under the wrong
- * posture `assertRecipeVisible` already has for visibility). Otherwise
+ * recipe should look identical to naming one that doesn't exist, same
- * whatever {@link assertRecipeVisible} throws (`404 RECIPE_NOT_FOUND`,
+ * "don't leak which part was wrong" posture `assertRecipeVisible` already
- * never `403`) if the recipe exists but isn't visible to the viewer.
+ * has for visibility). Otherwise whatever {@link assertRecipeVisible}
+ * throws (`404 RECIPE_NOT_FOUND`, never `403`) if the recipe exists but
+ * isn't visible to the viewer.
  */
 async function loadVisibleStepOrThrow(
   recipeId: number,
   stepId: number,
   viewerId: number,
   viewerHouseId: number | null,
-): Promise<{ id: number; descriptionLength: number }> {
+): Promise<{ id: number; description: string }> {
   try {
     const step = await prisma.step.findUnique({
       where: { id: stepId },
@@ -56,7 +60,7 @@ async function loadVisibleStepOrThrow(
       throw new HttpError(404, ErrorCode.STEP_NOT_FOUND, `Step ${stepId} not found`);
     }
     await assertRecipeVisible(step.recipeId, viewerId, viewerHouseId);
-    return { id: step.id, descriptionLength: step.description.length };
+    return { id: step.id, description: step.description };
   } catch (err) {
     throw err; // see recipe.service.ts's equivalent catch comment
   }
@@ -207,6 +211,21 @@ interface ManualUtensilMention {
   start: number;
   end: number;
 }
+/**
+ * Same as {@link ManualIngredientMention}, for a temperature — `raw` is
+ * already resolved by the caller ({@link submitTechStepCorrection}, which
+ * has the step's full `description` text to slice) rather than trusted
+ * from the client; see `manualStepTechStepTemperatureInputSchema`'s own
+ * doc comment (`packages/shared`) for why.
+ */
+interface ManualTemperatureMention {
+  celsius: number | null;
+  gasMark: number | null;
+  qualitative: "low" | "medium" | "high" | null;
+  raw: string;
+  start: number;
+  end: number;
+}
 
 /**
  * Applies a correction's *effect* on `stepId`'s real `StepTechStep`
@@ -232,16 +251,16 @@ interface ManualUtensilMention {
  *
  * `metadata`, when given (only ever alongside a real `correctedTechStepId`
  * — enforced by `submitTechStepCorrectionSchema`, not re-checked here),
- * replaces *every* `StepTechStepIngredient`/`StepTechStepUtensil` row on
+ * replaces *every* `StepTechStepIngredient`/`StepTechStepUtensil`/
- * this occurrence — `source: "auto"` (the classifier's own detection) and
+ * `StepTechStepTemperature` row on this occurrence — `source: "auto"` (the
- * any earlier `"manual"` set alike — with the newly-submitted one. This is
+ * classifier's own detection) and any earlier `"manual"` set alike — with
- * "le manuel remplace tout" (confirmed with the user): the resolved
+ * the newly-submitted one. This is "le manuel remplace tout" (confirmed
- * `order` this technique ends up at (whichever branch above produced it)
+ * with the user): the resolved `order` this technique ends up at
- * is the same `techStepOrder` both metadata tables key on, so the same
+ * (whichever branch above produced it) is the same `techStepOrder` all
- * `deleteMany` + `createMany` pair below is correct whether this call just
+ * three metadata tables key on, so the same `deleteMany` + `createMany`
- * updated an existing row (which may already carry auto-detected
+ * pair below is correct whether this call just updated an existing row
- * metadata) or created a brand new one (nothing to delete yet — a no-op
+ * (which may already carry auto-detected metadata) or created a brand new
- * `deleteMany`, not a special case).
+ * one (nothing to delete yet — a no-op `deleteMany`, not a special case).
  *
  * Runs inside the same transaction {@link submitTechStepCorrection} uses
  * for the audit-trail insert, so a request never leaves any of these
@@ -254,7 +273,11 @@ async function applyManualCorrection(
   span: { start: number; end: number },
   previousTechStepId: number | null,
   correctedTechStepId: number | null,
-  metadata?: { ingredients: ManualIngredientMention[]; utensils: ManualUtensilMention[] },
+  metadata?: {
+    ingredients: ManualIngredientMention[];
+    utensils: ManualUtensilMention[];
+    temperatures: ManualTemperatureMention[];
+  },
 ): Promise<void> {
   const existing = await tx.stepTechStep.findMany({ where: { stepId } });
 
@@ -328,6 +351,22 @@ async function applyManualCorrection(
           })),
         });
       }
+      await tx.stepTechStepTemperature.deleteMany({ where: { stepId, techStepOrder: order } });
+      if (metadata.temperatures.length > 0) {
+        await tx.stepTechStepTemperature.createMany({
+          data: metadata.temperatures.map((temperature) => ({
+            stepId,
+            techStepOrder: order,
+            celsius: temperature.celsius,
+            gasMark: temperature.gasMark,
+            qualitative: temperature.qualitative,
+            raw: temperature.raw,
+            start: temperature.start,
+            end: temperature.end,
+            source: "manual",
+          })),
+        });
+      }
     }
   } else if (target) {
     await tx.stepTechStep.delete({ where: { stepId_order: { stepId, order: target.order } } });
@@ -342,10 +381,20 @@ function toCorrectionView(correction: CorrectionWithTechSteps): StepTechStepCorr
     start: correction.start,
     end: correction.end,
     previousTechStep: correction.previousTechStep
-      ? { id: correction.previousTechStep.id, key: correction.previousTechStep.key }
+      ? {
+          id: correction.previousTechStep.id,
+          key: correction.previousTechStep.key,
+          isPlaceholder: correction.previousTechStep.isPlaceholder,
+          displayName: correction.previousTechStep.displayName,
+        }
       : null,
     correctedTechStep: correction.correctedTechStep
-      ? { id: correction.correctedTechStep.id, key: correction.correctedTechStep.key }
+      ? {
+          id: correction.correctedTechStep.id,
+          key: correction.correctedTechStep.key,
+          isPlaceholder: correction.correctedTechStep.isPlaceholder,
+          displayName: correction.correctedTechStep.displayName,
+        }
       : null,
     createdAt: correction.createdAt.toISOString(),
   };
@@ -365,10 +414,11 @@ function toCorrectionView(correction: CorrectionWithTechSteps): StepTechStepCorr
  * @throws {HttpError} `404 STEP_NOT_FOUND`/`404 RECIPE_NOT_FOUND` — see
  *   {@link loadVisibleStepOrThrow}. `400 INVALID_CORRECTION_SPAN` if
  *   `start`/`end` (the correction's own span, or any of
- *   `input.ingredients`/`input.utensils`' own spans) fall outside the
+ *   `input.ingredients`/`input.utensils`/`input.temperatures`' own spans)
- *   step's current `description` (it may have been edited since the user
+ *   fall outside the step's current `description` (it may have been
- *   last saw it). `404 TECH_STEP_NOT_FOUND`/`404 INGREDIENT_NOT_FOUND`/
+ *   edited since the user last saw it). `404 TECH_STEP_NOT_FOUND`/
- *   `404 UNIT_NOT_FOUND`/`404 UTENSIL_NOT_FOUND` if any referenced id
+ *   `404 INGREDIENT_NOT_FOUND`/`404 UNIT_NOT_FOUND`/`404 UTENSIL_NOT_FOUND`
+ *   if any referenced id
  *   doesn't exist.
  */
 export async function submitTechStepCorrection(
@@ -380,18 +430,20 @@ export async function submitTechStepCorrection(
 ): Promise<SubmitTechStepCorrectionResult> {
   try {
     const step = await loadVisibleStepOrThrow(recipeId, stepId, correctorId, viewerHouseId);
+    const descriptionLength = step.description.length;
 
     const spans = [
       { start: input.start, end: input.end },
       ...(input.ingredients ?? []),
       ...(input.utensils ?? []),
+      ...(input.temperatures ?? []),
     ];
     for (const span of spans) {
-      if (span.start >= step.descriptionLength || span.end > step.descriptionLength) {
+      if (span.start >= descriptionLength || span.end > descriptionLength) {
         throw new HttpError(
           400,
           ErrorCode.INVALID_CORRECTION_SPAN,
-          `Span [${span.start}, ${span.end}) falls outside step ${stepId}'s description (length ${step.descriptionLength})`,
+          `Span [${span.start}, ${span.end}) falls outside step ${stepId}'s description (length ${descriptionLength})`,
         );
       }
     }
@@ -408,7 +460,32 @@ export async function submitTechStepCorrection(
     );
     await assertUtensilsExist((input.utensils ?? []).map((u) => u.utensilId));
 
-    const { correction, techSteps } = await prisma.$transaction(async (tx) => {
+    const { correction, techSteps, placeholderTechStepId } = await prisma.$transaction(
+      async (tx) => {
+        // A technique the catalog doesn't have (issue #130) — mint a
+        // placeholder `TechStep` for it, in the same transaction as the
+        // correction that references it, then proceed exactly as if its id had
+        // been sent as `correctedTechStepId`. Same shape as
+        // `recipe.service.ts`'s `resolveIngredientLines` does for a
+        // free-text ingredient.
+        const placeholderTechStepId =
+          input.correctedTechStepName !== undefined
+            ? (
+                await tx.techStep.create({
+                  data: {
+                    key: `placeholder:${randomUUID()}`,
+                    isPlaceholder: true,
+                    displayName: input.correctedTechStepName,
+                    createdById: correctorId,
+                    createdAt: new Date(),
+                  },
+                  select: { id: true },
+                })
+              ).id
+            : null;
+        const effectiveCorrectedTechStepId =
+          placeholderTechStepId ?? input.correctedTechStepId ?? null;
+
         const createdCorrection = await tx.stepTechStepCorrection.create({
           data: {
             stepId: step.id,
@@ -416,7 +493,7 @@ export async function submitTechStepCorrection(
             start: input.start,
             end: input.end,
             previousTechStepId: input.previousTechStepId ?? null,
-          correctedTechStepId: input.correctedTechStepId ?? null,
+            correctedTechStepId: effectiveCorrectedTechStepId,
           },
           include: correctionInclude,
         });
@@ -426,8 +503,10 @@ export async function submitTechStepCorrection(
           step.id,
           { start: input.start, end: input.end },
           input.previousTechStepId ?? null,
-        input.correctedTechStepId ?? null,
+          effectiveCorrectedTechStepId,
-        input.ingredients === undefined && input.utensils === undefined
+          input.ingredients === undefined &&
+            input.utensils === undefined &&
+            input.temperatures === undefined
             ? undefined
             : {
                 ingredients: (input.ingredients ?? []).map((ingredient) => ({
@@ -442,13 +521,24 @@ export async function submitTechStepCorrection(
                   start: utensil.start,
                   end: utensil.end,
                 })),
+                // `raw` is derived here (not sent by the client) — see
+                // `ManualTemperatureMention`'s own doc comment.
+                temperatures: (input.temperatures ?? []).map((temperature) => ({
+                  celsius: temperature.celsius ?? null,
+                  gasMark: temperature.gasMark ?? null,
+                  qualitative: temperature.qualitative ?? null,
+                  raw: step.description.slice(temperature.start, temperature.end),
+                  start: temperature.start,
+                  end: temperature.end,
+                })),
               },
         );
 
-      // Same nested `ingredients`/`utensils` include as `recipe.service.ts`'s
+        // Same nested `ingredients`/`utensils`/`temperatures` include as
-      // `recipeInclude` — `toStepTechStepViews` (reused below) expects it,
+        // `recipe.service.ts`'s `recipeInclude` — `toStepTechStepViews`
-      // so the fresh sequence read right after a manual correction resolves
+        // (reused below) expects it, so the fresh sequence read right after a
-      // exactly the same way a normal `GET /recipes/:id` would.
+        // manual correction resolves exactly the same way a normal
+        // `GET /recipes/:id` would.
         const freshTechSteps = await tx.stepTechStep.findMany({
           where: { stepId: step.id },
           orderBy: { order: "asc" },
@@ -466,11 +556,34 @@ export async function submitTechStepCorrection(
               },
             },
             utensils: { include: { utensil: true } },
+            temperatures: true,
           },
         });
 
-      return { correction: createdCorrection, techSteps: freshTechSteps };
+        return { correction: createdCorrection, techSteps: freshTechSteps, placeholderTechStepId };
+      },
+    );
+
+    analytics.recordEvent("tech_step.correction_submitted", {
+      actorId: correctorId,
+      context: {
+        recipeId,
+        stepId,
+        previousTechStepId: input.previousTechStepId ?? null,
+        correctedTechStepId: correction.correctedTechStepId,
+      },
     });
+    if (placeholderTechStepId !== null) {
+      analytics.recordEvent("tech_step.placeholder_proposed", {
+        actorId: correctorId,
+        context: {
+          recipeId,
+          stepId,
+          techStepId: placeholderTechStepId,
+          name: input.correctedTechStepName ?? "",
+        },
+      });
+    }
 
     return { correction: toCorrectionView(correction), techSteps: toStepTechStepViews(techSteps) };
   } catch (err) {

apps/api/src/modules/recipe/recipe.service.ts

@@ -1,7 +1,9 @@
+import { randomUUID } from "node:crypto";
 import { HttpError } from "@batch-cooking/error-tools";
 import {
   type AllergyView,
   type CreateRecipeInput,
+  computeRecipeDietViews,
   type DietView,
   ErrorCode,
   type IngredientView,
@@ -14,10 +16,12 @@ import {
 } from "@batch-cooking/shared";
 import type { Prisma } from "@prisma/client";
 import { prisma } from "../../db/prisma.js";
+import { analytics } from "../../lib/analytics.service.js";
 import {
   type TechStepMatch,
   techStepClassifier,
 } from "../../lib/recipe-matching/tech-step-matcher.js";
+import { toStepTechStepCreateInputs } from "../../lib/recipe-matching/tech-step-persistence.js";
 
 // No user-language preference exists anywhere in the app yet (a single
 // "fr" translation file, no locale field on User/UserProfile) — steps are
@@ -26,7 +30,7 @@ import {
 // is a parameter rather than baked into that module.
 const DEFAULT_TECH_STEP_LOCALE = "fr";
 
-/** Prisma `include` for every query that needs a full {@link RecipeView} — ingredients resolved to their reference data + allergens, steps in order, diet tags, and whether `viewerId` has favorited it. Parameterized by viewer since `favoritedBy` is per-viewer, not a static shape. */
+/** Prisma `include` for every query that needs a full {@link RecipeView} — ingredients resolved to their reference data (name, allergens, diet compatibilities), steps in order, and whether `viewerId` has favorited it. Parameterized by viewer since `favoritedBy` is per-viewer, not a static shape. A recipe's own regimes are no longer stored (issue #131 dropped `RecipeDiet`) — they're computed from the ingredient views by {@link computeRecipeDietViews}. */
 function recipeInclude(viewerId: number) {
   return {
     ingredients: {
@@ -66,22 +70,43 @@ function recipeInclude(viewerId: number) {
               },
             },
             utensils: { include: { utensil: true } },
+            temperatures: true,
           },
         },
       },
     },
-    diets: { include: { diet: true } },
     favoritedBy: { where: { userProfileId: viewerId } },
   } satisfies Prisma.RecipeInclude;
 }
 
+/**
+ * Every reference `Diet` row (`{ id, key }`), loaded once and memoized —
+ * `Diet` is seeded reference data that never changes at runtime, so caching
+ * it for the process's lifetime is safe. Used to attach a real `DietView` to
+ * the derived gluten-free regime (see {@link loadGlutenFreeDiet}) and to
+ * resolve the planning picker's `dietIds` filter / a household's members'
+ * regimes for the post-filter in {@link listRecipes}.
+ */
+let referenceDietsPromise: Promise<DietView[]> | null = null;
+function loadReferenceDiets(): Promise<DietView[]> {
+  if (referenceDietsPromise === null) {
+    referenceDietsPromise = prisma.diet.findMany({ select: { id: true, key: true } });
+  }
+  return referenceDietsPromise;
+}
+
+/** The reference `glutenFree` {@link DietView} — {@link computeRecipeDietViews} needs it to give the derived gluten-free regime a real `{ id, key }` (no `IngredientDiet` row references it, unlike the other regimes). `undefined` only if the seed somehow lacks the row, in which case gluten-free is simply omitted. */
+async function loadGlutenFreeDiet(): Promise<DietView | undefined> {
+  return (await loadReferenceDiets()).find((diet) => diet.key === "glutenFree");
+}
+
 type RecipeWithDetails = Prisma.RecipeGetPayload<{
   include: ReturnType<typeof recipeInclude>;
 }>;
 /** Exported — `shopping-list.service.ts` fetches its own, narrower ingredient include (no need for a whole `RecipeWithDetails`) but shapes the same `allergies`/`diets` nesting, so it reuses {@link toIngredientView} directly instead of re-deriving this type. */
 export type IngredientWithDetails = RecipeWithDetails["ingredients"][number]["ingredient"];
-/** Exported — see {@link IngredientWithDetails}, same reuse by `shopping-list.service.ts`. */
+/** Exported — see {@link IngredientWithDetails}, same reuse by `shopping-list.service.ts`. `NonNullable` since a `RecipeIngredient.unit` is now `null` on a "selon le goût" line — callers guard that before calling {@link toUnitView}. */
-export type UnitWithDetails = RecipeWithDetails["ingredients"][number]["unit"];
+export type UnitWithDetails = NonNullable<RecipeWithDetails["ingredients"][number]["unit"]>;
 
 /** Shapes a Prisma `Unit` row into the public {@link UnitView} — same "Decimal → number" conversion `reference.service.ts`'s `getUnits` does. Exported — reused as-is by `shopping-list.service.ts` (a shopping list resolves the same reference data, no need for a second copy of this mapping). */
 export function toUnitView(unit: UnitWithDetails): UnitView {
@@ -108,13 +133,15 @@ export function toIngredientView(ingredient: IngredientWithDetails): IngredientV
       kind: allergy.category.kind,
     })),
     diets: ingredient.diets.map(({ diet }) => ({ id: diet.id, key: diet.key })),
+    // A placeholder line round-trips as a normal `Ingredient` with a real
+    // id — the frontend tells it apart by this flag (badge, no
+    // allergen/diet info) and shows `displayName` verbatim instead of
+    // looking up an i18n label that doesn't exist for a `placeholder:` key.
+    isPlaceholder: ingredient.isPlaceholder,
+    displayName: ingredient.displayName,
   };
 }
 
-function toDietView(diet: { id: number; key: string }): DietView {
-  return { id: diet.id, key: diet.key };
-}
-
 /** Deduplicates allergens (by id) across every ingredient of a recipe, for the aggregated "contains" badge — see {@link RecipeSummaryView.allergens}. */
 function aggregateAllergens(ingredients: IngredientView[]): AllergyView[] {
   const byId = new Map<number, AllergyView>();
@@ -126,10 +153,13 @@ function aggregateAllergens(ingredients: IngredientView[]): AllergyView[] {
   return [...byId.values()];
 }
 
-/** Shapes a Prisma `Recipe` (with {@link recipeInclude} included) into the lighter {@link RecipeSummaryView} used by the catalog table — everything `toRecipeView` also needs, factored out since the full detail view is a strict superset. */
+/** Shapes a Prisma `Recipe` (with {@link recipeInclude} included) into the lighter {@link RecipeSummaryView} used by the catalog table — everything `toRecipeView` also needs, factored out since the full detail view is a strict superset. `glutenFreeDiet` (see {@link loadGlutenFreeDiet}) is threaded through only so {@link computeRecipeDietViews} can attach a real `DietView` to the derived gluten-free regime. */
-function toRecipeSummaryView(recipe: RecipeWithDetails): RecipeSummaryView {
+function toRecipeSummaryView(
-  const allergens = aggregateAllergens(
+  recipe: RecipeWithDetails,
-    recipe.ingredients.map((recipeIngredient) => toIngredientView(recipeIngredient.ingredient)),
+  glutenFreeDiet: DietView | undefined,
+): RecipeSummaryView {
+  const ingredientViews = recipe.ingredients.map((recipeIngredient) =>
+    toIngredientView(recipeIngredient.ingredient),
   );
   return {
     id: recipe.id,
@@ -139,8 +169,9 @@ function toRecipeSummaryView(recipe: RecipeWithDetails): RecipeSummaryView {
     portions: recipe.portions,
     authorId: recipe.authorId,
     visibility: recipe.visibility,
-    allergens,
+    allergens: aggregateAllergens(ingredientViews),
-    diets: recipe.diets.map((recipeDiet) => toDietView(recipeDiet.diet)),
+    // Computed from the ingredients, not stored — see `RecipeSummaryView.diets`.
+    diets: computeRecipeDietViews(ingredientViews, glutenFreeDiet),
     isFavorite: recipe.favoritedBy.length > 0,
   };
 }
@@ -167,11 +198,25 @@ export function toStepTechStepViews(
 ): StepTechStepView[] {
   const views: StepTechStepView[] = [];
   for (const stepTechStep of techSteps) {
-    const { start, end, contextStart, contextEnd, techStep, source, ingredients, utensils } =
+    const {
-      stepTechStep;
+      start,
+      end,
+      contextStart,
+      contextEnd,
+      techStep,
+      source,
+      ingredients,
+      utensils,
+      temperatures,
+    } = stepTechStep;
     if (start === null || end === null) continue;
     views.push({
-      techStep: { id: techStep.id, key: techStep.key },
+      techStep: {
+        id: techStep.id,
+        key: techStep.key,
+        isPlaceholder: techStep.isPlaceholder,
+        displayName: techStep.displayName,
+      },
       start,
       end,
       // `source` is a plain DB `String`, not a Prisma enum (see
@@ -198,20 +243,39 @@ export function toStepTechStepViews(
         end: stepTechStepUtensil.end,
         source: stepTechStepUtensil.source === "manual" ? "manual" : "auto",
       })),
+      temperatures: temperatures.map((stepTechStepTemperature) => ({
+        // `celsius` comes back as a Prisma `Decimal` — plain `number` here,
+        // same treatment as `StepTechStepIngredient.quantity` above.
+        celsius:
+          stepTechStepTemperature.celsius === null ? null : Number(stepTechStepTemperature.celsius),
+        gasMark: stepTechStepTemperature.gasMark,
+        qualitative:
+          stepTechStepTemperature.qualitative === "low" ||
+          stepTechStepTemperature.qualitative === "medium" ||
+          stepTechStepTemperature.qualitative === "high"
+            ? stepTechStepTemperature.qualitative
+            : null,
+        raw: stepTechStepTemperature.raw,
+        start: stepTechStepTemperature.start,
+        end: stepTechStepTemperature.end,
+        // Same narrowing posture as the technique's own `source` above.
+        source: stepTechStepTemperature.source === "manual" ? "manual" : "auto",
+      })),
     });
   }
   return views;
 }
 
-/** Shapes a Prisma `Recipe` (with {@link recipeInclude} included) into the public {@link RecipeView}. */
+/** Shapes a Prisma `Recipe` (with {@link recipeInclude} included) into the public {@link RecipeView}. `glutenFreeDiet` — see {@link toRecipeSummaryView}. */
-function toRecipeView(recipe: RecipeWithDetails): RecipeView {
+function toRecipeView(recipe: RecipeWithDetails, glutenFreeDiet: DietView | undefined): RecipeView {
   const ingredients = recipe.ingredients.map((recipeIngredient) => ({
     ingredient: toIngredientView(recipeIngredient.ingredient),
-    quantity: Number(recipeIngredient.quantity),
+    // Both `null` on a "selon le goût" seasoning line — see `RecipeIngredientView`.
-    unit: toUnitView(recipeIngredient.unit),
+    quantity: recipeIngredient.quantity === null ? null : Number(recipeIngredient.quantity),
+    unit: recipeIngredient.unit === null ? null : toUnitView(recipeIngredient.unit),
   }));
   return {
-    ...toRecipeSummaryView(recipe),
+    ...toRecipeSummaryView(recipe, glutenFreeDiet),
     ingredients,
     steps: recipe.steps.map((step) => ({
       id: step.id,
@@ -264,54 +328,57 @@ function visibleToViewerWhere(
 }
 
 /**
- * `Recipe` rows that avoid every member of `houseId`'s declared allergens
+ * The two halves of the planning recipe picker's "convient à tout le foyer"
- * and, for every member with a declared regime, are tagged with that
+ * toggle (`suitableForHousehold` on `listRecipes`):
- * regime — the planning recipe picker's "convient à tout le foyer" toggle
+ *  - `allergenWhere` — a `Prisma.RecipeWhereInput` excluding any recipe that
- * (`suitableForHousehold` on `listRecipes`). Computed server-side (a small
+ *    contains an allergen declared by a member (still expressible in SQL).
- * extra query to gather the household's members' allergy/regime ids)
+ *  - `requiredDietKeys` — every regime declared by a member (`omnivore`
- * rather than exposed to the client as raw per-member data: a member's
+ *    dropped: it constrains nothing). A recipe must satisfy *all* of them —
- * allergies/regime are private the same way visibility already keeps a
+ *    a recipe suiting a vegetarian member doesn't automatically suit a
- * recipe's existence private (404, never 403) — nothing here should let
+ *    gluten-free one. Applied as a post-filter in {@link listRecipes} on the
- * one member infer another's medical/dietary info from the shape of a
+ *    *computed* `RecipeSummaryView.diets`, since regimes are no longer a
- * filtered list. Deliberately excludes `UserProfileDislikedIngredient` —
+ *    stored column to query (issue #131).
- * the schema already treats disliked ingredients as a taste preference,
+ *
- * not a safety constraint (see that model's doc comment), so it doesn't
+ * Computed server-side (a small extra query for the members' allergy/regime
- * belong in a filter framed around what's safe/appropriate to serve.
+ * data) rather than exposed to the client as raw per-member data: a
+ * member's allergies/regime are private the same way visibility already
+ * keeps a recipe's existence private. Deliberately excludes
+ * `UserProfileDislikedIngredient` — a taste preference, not a safety
+ * constraint (see that model's doc comment).
  */
-async function suitableForHouseholdWhere(houseId: number): Promise<Prisma.RecipeWhereInput> {
+async function suitableForHousehold(
+  houseId: number,
+): Promise<{ allergenWhere: Prisma.RecipeWhereInput; requiredDietKeys: string[] }> {
   try {
     const members = await prisma.userProfile.findMany({
       where: { houseId },
-      select: { dietId: true, allergies: { select: { allergyId: true } } },
+      select: {
+        diet: { select: { key: true } },
+        allergies: { select: { allergyId: true } },
+      },
     });
-    const requiredDietIds = [
+    const requiredDietKeys = [
-      ...new Set(members.map((m) => m.dietId).filter((id): id is number => id !== null)),
+      ...new Set(
+        members
+          .map((member) => member.diet?.key)
+          .filter((key): key is string => key !== undefined && key !== "omnivore"),
+      ),
     ];
     const excludedAllergyIds = [
-      ...new Set(members.flatMap((m) => m.allergies.map((a) => a.allergyId))),
+      ...new Set(members.flatMap((member) => member.allergies.map((allergy) => allergy.allergyId))),
     ];
 
-    const conditions: Prisma.RecipeWhereInput[] = [];
+    const allergenWhere: Prisma.RecipeWhereInput =
-    if (requiredDietIds.length > 0) {
+      excludedAllergyIds.length > 0
-      // Every diet declared by a member must be among this recipe's tags —
+        ? {
-      // not "at least one", since a recipe suiting a vegetarian member
-      // doesn't automatically suit a gluten-free one too.
-      conditions.push({
-        AND: requiredDietIds.map((dietId) => ({ diets: { some: { dietId } } })),
-      });
-    }
-    if (excludedAllergyIds.length > 0) {
-      conditions.push({
             ingredients: {
               none: {
-            ingredient: {
+                ingredient: { allergies: { some: { allergyId: { in: excludedAllergyIds } } } },
-              allergies: { some: { allergyId: { in: excludedAllergyIds } } },
               },
             },
-        },
-      });
           }
-    return { AND: conditions };
+        : {};
+    return { allergenWhere, requiredDietKeys };
   } catch (err) {
     // Rethrown as-is — `wrapAsyncHandler`/the error middleware (which
     // already logs it, see `error-logger.ts`) is what actually handles it,
@@ -345,7 +412,7 @@ async function sourceVisibilityWhere(houseId: number | null): Promise<Prisma.Rec
           ).map((row) => row.sourceId);
     return { OR: [{ sourceId: null }, { sourceId: { in: enabledSourceIds } }] };
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
@@ -359,11 +426,11 @@ async function sourceVisibilityWhere(houseId: number | null): Promise<Prisma.Rec
 export interface ListRecipesFilters {
   /** Case-insensitive name substring. */
   search?: string;
-  /** The planning recipe picker's "convient à tout le foyer" toggle — see {@link suitableForHouseholdWhere}. */
+  /** The planning recipe picker's "convient à tout le foyer" toggle — see {@link suitableForHousehold}. */
   suitableForHousehold?: boolean;
   /** Recipe must carry *every* one of these ingredient ids (AND, not "any of") — the planning recipe picker's ingredient filter. */
   ingredientIds?: number[];
-  /** Recipe must be tagged with *every* one of these diet ids (AND, same reasoning) — the planning recipe picker's regime filter. */
+  /** Recipe's *computed* regimes must include *every* one of these diet ids (AND, same reasoning) — the planning recipe picker's regime filter. Applied as a post-filter now that regimes aren't a stored column (issue #131). */
   dietIds?: number[];
 }
 
@@ -383,31 +450,32 @@ export async function listRecipes(
   filters: ListRecipesFilters = {},
 ): Promise<RecipeSummaryView[]> {
   try {
-    const { search, suitableForHousehold, ingredientIds, dietIds } = filters;
+    const { search, suitableForHousehold: suitable, ingredientIds, dietIds } = filters;
     const conditions: Prisma.RecipeWhereInput[] = [await sourceVisibilityWhere(viewerHouseId)];
     if (search) {
       conditions.push({ name: { contains: search, mode: "insensitive" } });
     }
+    // Regimes are computed from ingredients, not a stored column (issue
+    // #131), so the household-regime and `dietIds` filters can't be SQL
+    // anymore — they run as post-filters on the mapped summaries below.
+    // Everything that still *can* be a `where` stays one.
+    let requiredDietKeys: string[] = [];
     // No-op without a household — nothing to filter against, same posture as
     // the `foyer` tab returning everything it can rather than throwing.
-    if (suitableForHousehold && viewerHouseId !== null) {
+    if (suitable && viewerHouseId !== null) {
-      conditions.push(await suitableForHouseholdWhere(viewerHouseId));
+      const household = await suitableForHousehold(viewerHouseId);
+      conditions.push(household.allergenWhere);
+      requiredDietKeys = household.requiredDietKeys;
     }
     if (ingredientIds && ingredientIds.length > 0) {
       // One condition per required id (AND) — a recipe must carry all of
-      // them, not just one, same "every one, not any one" posture as
+      // them, not just one.
-      // suitableForHouseholdWhere's requiredDietIds.
       conditions.push({
         AND: ingredientIds.map((ingredientId) => ({
           ingredients: { some: { ingredientId } },
         })),
       });
     }
-    if (dietIds && dietIds.length > 0) {
-      conditions.push({
-        AND: dietIds.map((dietId) => ({ diets: { some: { dietId } } })),
-      });
-    }
 
     switch (tab) {
       case "favoris":
@@ -427,14 +495,38 @@ export async function listRecipes(
         break;
     }
 
-    const recipes = await prisma.recipe.findMany({
+    const [recipes, referenceDiets] = await Promise.all([
+      prisma.recipe.findMany({
         where: { AND: conditions },
         include: recipeInclude(viewerId),
         orderBy: { name: "asc" },
-    });
+      }),
-    return recipes.map(toRecipeSummaryView);
+      loadReferenceDiets(),
+    ]);
+    const glutenFreeDiet = referenceDiets.find((diet) => diet.key === "glutenFree");
+
+    let summaries = recipes.map((recipe) => toRecipeSummaryView(recipe, glutenFreeDiet));
+
+    // Post-filters on the *computed* `diets` (see the comment where the SQL
+    // conditions are built). "Every one, not any one" for both.
+    if (requiredDietKeys.length > 0) {
+      summaries = summaries.filter((summary) =>
+        requiredDietKeys.every((key) => summary.diets.some((diet) => diet.key === key)),
+      );
+    }
+    if (dietIds && dietIds.length > 0) {
+      // `omnivore` in the filter would match nothing (it's never emitted) —
+      // treat it as "no constraint" rather than silently returning an empty list.
+      const requiredIds = dietIds.filter(
+        (id) => referenceDiets.find((diet) => diet.id === id)?.key !== "omnivore",
+      );
+      summaries = summaries.filter((summary) =>
+        requiredIds.every((id) => summary.diets.some((diet) => diet.id === id)),
+      );
+    }
+    return summaries;
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
@@ -453,23 +545,23 @@ export async function getRecipe(
     if (!canView(recipe, viewerId, viewerHouseId)) {
       throw new HttpError(404, ErrorCode.RECIPE_NOT_FOUND, `Recipe ${id} not found`);
     }
-    return toRecipeView(recipe);
+    return toRecipeView(recipe, await loadGlutenFreeDiet());
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
 /**
- * Creates a recipe with its ingredients, ordered steps and diet tags in one
+ * Creates a recipe with its ingredients and ordered steps in one go —
- * go — steps' `order` is derived from their position in `input.steps`,
+ * steps' `order` is derived from their position in `input.steps`,
  * ingredients reference existing reference `Ingredient` rows by id (see
- * `GET /reference/ingredients`; there's no way to create one here).
+ * `GET /reference/ingredients`; there's no way to create one here). Its
- * `authorId`/`authorHouseId` are fixed at creation and never change on
+ * regimes aren't stored — they're computed from the ingredients on read
- * later edits (see {@link updateRecipe}).
+ * (issue #131). `authorId`/`authorHouseId` are fixed at creation and never
+ * change on later edits (see {@link updateRecipe}).
  *
  * @throws {HttpError} `404 INGREDIENT_NOT_FOUND` if any `ingredientId` doesn't match a reference ingredient.
  * @throws {HttpError} `404 UNIT_NOT_FOUND` if any `unitId` doesn't match a reference unit.
- * @throws {HttpError} `404 DIET_NOT_FOUND` if any `dietId` doesn't match a reference diet.
  */
 export async function createRecipe(
   input: CreateRecipeInput,
@@ -479,7 +571,7 @@ export async function createRecipe(
   try {
     return await createRecipeInternal(input, authorId, authorHouseId, null);
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
@@ -496,7 +588,6 @@ export async function createRecipe(
  *
  * @throws {HttpError} `404 INGREDIENT_NOT_FOUND` if any `ingredientId` doesn't match a reference ingredient.
  * @throws {HttpError} `404 UNIT_NOT_FOUND` if any `unitId` doesn't match a reference unit.
- * @throws {HttpError} `404 DIET_NOT_FOUND` if any `dietId` doesn't match a reference diet.
  */
 export async function createImportedRecipe(
   input: CreateRecipeInput,
@@ -507,7 +598,7 @@ export async function createImportedRecipe(
   try {
     return await createRecipeInternal(input, authorId, authorHouseId, source);
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
@@ -541,6 +632,73 @@ async function matchStepsTechSteps<T extends { description: string }>(
   );
 }
 
+/** One resolved ingredient line — every `placeholderName` has been turned into a real (placeholder) `ingredientId`, ready for a `RecipeIngredient` create. `quantity`/`unitId` are both `null` for a "selon le goût" seasoning line. */
+interface ResolvedIngredientLine {
+  ingredientId: number;
+  quantity: number | null;
+  unitId: number | null;
+}
+
+/**
+ * Turns each `input.ingredients` line into a {@link ResolvedIngredientLine}:
+ * a line that already carries an `ingredientId` (a catalog pick, or an
+ * existing placeholder round-tripping through an edit) passes through
+ * unchanged; a `placeholderName` line gets a fresh placeholder `Ingredient`
+ * row (`isPlaceholder: true`, a generated `placeholder:<uuid>` key, the
+ * typed text as `displayName`, stamped with `authorId`/now) created via
+ * `tx` — so it rolls back together with the recipe if anything later in the
+ * same transaction fails, never leaving an orphan behind.
+ *
+ * Returns the created placeholders separately so the caller can emit one
+ * `ingredient.placeholder_created` analytics event per row *after* the
+ * transaction commits (the recipe id it wants in the event context doesn't
+ * exist yet in here).
+ */
+async function resolveIngredientLines(
+  lines: CreateRecipeInput["ingredients"],
+  authorId: number,
+  tx: Prisma.TransactionClient,
+): Promise<{
+  resolved: ResolvedIngredientLine[];
+  createdPlaceholders: { id: number; name: string }[];
+}> {
+  try {
+    const resolved: ResolvedIngredientLine[] = [];
+    const createdPlaceholders: { id: number; name: string }[] = [];
+    for (const line of lines) {
+      if (line.ingredientId !== undefined) {
+        resolved.push({
+          ingredientId: line.ingredientId,
+          quantity: line.quantity ?? null,
+          unitId: line.unitId ?? null,
+        });
+        continue;
+      }
+      // `recipeIngredientInputSchema`'s refine guarantees the other branch.
+      const name = (line.placeholderName ?? "").trim();
+      const placeholder = await tx.ingredient.create({
+        data: {
+          key: `placeholder:${randomUUID()}`,
+          isPlaceholder: true,
+          displayName: name,
+          createdById: authorId,
+          createdAt: new Date(),
+        },
+        select: { id: true },
+      });
+      resolved.push({
+        ingredientId: placeholder.id,
+        quantity: line.quantity ?? null,
+        unitId: line.unitId ?? null,
+      });
+      createdPlaceholders.push({ id: placeholder.id, name });
+    }
+    return { resolved, createdPlaceholders };
+  } catch (err) {
+    throw err; // see suitableForHousehold()'s catch comment above
+  }
+}
+
 async function createRecipeInternal(
   input: CreateRecipeInput,
   authorId: number,
@@ -548,9 +706,12 @@ async function createRecipeInternal(
   source: { sourceId: number; externalId: string; locale: string } | null,
 ): Promise<RecipeView> {
   try {
-    await assertIngredientsExist(input.ingredients.map((i) => i.ingredientId));
+    await assertIngredientsExist(
-    await assertUnitsExist(input.ingredients.map((i) => i.unitId));
+      input.ingredients.map((i) => i.ingredientId).filter((id): id is number => id !== undefined),
-    await assertDietsExist(input.dietIds);
+    );
+    await assertUnitsExist(
+      input.ingredients.flatMap((i) => (i.unitId === undefined ? [] : [i.unitId])),
+    );
     // Matched up front (one call per step, in parallel) rather than inline
     // inside the `steps.create` map below — `techStepClassifier` is async
     // (a trained model, not a pure regex test), so its result has to
@@ -561,7 +722,16 @@ async function createRecipeInternal(
       source?.locale ?? DEFAULT_TECH_STEP_LOCALE,
     );
 
-    const created = await prisma.recipe.create({
+    // One transaction so the free-text placeholder `Ingredient` rows and the
+    // recipe that references them commit together — a failed recipe create
+    // must never leave orphan placeholders behind.
+    const { created, createdPlaceholders } = await prisma.$transaction(async (tx) => {
+      const { resolved, createdPlaceholders } = await resolveIngredientLines(
+        input.ingredients,
+        authorId,
+        tx,
+      );
+      const created = await tx.recipe.create({
         data: {
           name: input.name,
           description: input.description ?? null,
@@ -573,10 +743,10 @@ async function createRecipeInternal(
           sourceId: source?.sourceId ?? null,
           externalId: source?.externalId ?? null,
           ingredients: {
-          create: input.ingredients.map((ingredient) => ({
+            create: resolved.map((line) => ({
-            ingredientId: ingredient.ingredientId,
+              ingredientId: line.ingredientId,
-            quantity: ingredient.quantity,
+              quantity: line.quantity,
-            unitId: ingredient.unitId,
+              unitId: line.unitId,
             })),
           },
           steps: {
@@ -584,56 +754,49 @@ async function createRecipeInternal(
               description: step.description,
               picture: step.picture ?? null,
               order: index,
-            techSteps: {
+              // Technique rows + their clause metadata (ingredients /
-              create: matches.map((match, order) => ({
+              // utensils / temperatures) — see `toStepTechStepCreateInputs`.
-                techStepId: match.techStepId,
+              // `updateRecipe` below builds the exact same payload from the
-                start: match.start,
+              // same helper so a resave never drops what a create persisted.
-                end: match.end,
+              techSteps: { create: toStepTechStepCreateInputs(matches) },
-                contextStart: match.contextStart,
-                contextEnd: match.contextEnd,
-                order,
-                ingredients: {
-                  create: match.ingredients.map((ingredient) => ({
-                    ingredientId: ingredient.ingredientId,
-                    quantity: ingredient.quantity,
-                    unitId: ingredient.unitId,
-                    start: ingredient.start,
-                    end: ingredient.end,
             })),
           },
-                utensils: {
-                  create: match.utensils.map((utensil) => ({
-                    utensilId: utensil.utensilId,
-                    start: utensil.start,
-                    end: utensil.end,
-                  })),
-                },
-              })),
-            },
-          })),
-        },
-        diets: { create: input.dietIds.map((dietId) => ({ dietId })) },
         },
         include: recipeInclude(authorId),
       });
-    return toRecipeView(created);
+      return { created, createdPlaceholders };
+    });
+
+    analytics.recordEvent(source === null ? "recipe.created" : "recipe.imported", {
+      actorId: authorId,
+      context: { recipeId: created.id, sourceId: source?.sourceId ?? null },
+    });
+    for (const placeholder of createdPlaceholders) {
+      analytics.recordEvent("ingredient.placeholder_created", {
+        actorId: authorId,
+        context: { name: placeholder.name, ingredientId: placeholder.id, recipeId: created.id },
+      });
+    }
+
+    return toRecipeView(created, await loadGlutenFreeDiet());
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
 /**
  * Replaces a recipe's whole content — name/description/picture/visibility
- * and the complete ingredient/step/diet lists (not a partial merge: a line
+ * and the complete ingredient/step lists (not a partial merge: a line
  * missing from `input` is removed, same contract as `PATCH
- * /profile/allergies`). `authorId`/`authorHouseId` are untouched — editing
+ * /profile/allergies`). Regimes aren't part of the payload — they're
- * never transfers ownership.
+ * recomputed from the ingredients on the next read (issue #131).
+ * `authorId`/`authorHouseId` are untouched — editing never transfers
+ * ownership.
  *
  * @throws {HttpError} `404 RECIPE_NOT_FOUND` if `id` doesn't match any recipe visible to `viewerId`.
  * @throws {HttpError} `403 NOT_RECIPE_AUTHOR` if `viewerId` isn't this recipe's author.
  * @throws {HttpError} `404 INGREDIENT_NOT_FOUND` if any `ingredientId` doesn't match a reference ingredient.
  * @throws {HttpError} `404 UNIT_NOT_FOUND` if any `unitId` doesn't match a reference unit.
- * @throws {HttpError} `404 DIET_NOT_FOUND` if any `dietId` doesn't match a reference diet.
  */
 export async function updateRecipe(
   id: number,
@@ -643,16 +806,30 @@ export async function updateRecipe(
 ): Promise<RecipeView> {
   try {
     await assertIsAuthor(id, viewerId, viewerHouseId);
-    await assertIngredientsExist(input.ingredients.map((i) => i.ingredientId));
+    await assertIngredientsExist(
-    await assertUnitsExist(input.ingredients.map((i) => i.unitId));
+      input.ingredients
-    await assertDietsExist(input.dietIds);
+        .map((i) => i.ingredientId)
+        .filter((ingredientId): ingredientId is number => ingredientId !== undefined),
+    );
+    await assertUnitsExist(
+      input.ingredients.flatMap((i) => (i.unitId === undefined ? [] : [i.unitId])),
+    );
     const stepsWithTechSteps = await matchStepsTechSteps(input.steps, DEFAULT_TECH_STEP_LOCALE);
 
-    await prisma.$transaction([
+    // Interactive transaction (not the array form) so any new free-text
-      prisma.recipeIngredient.deleteMany({ where: { recipeId: id } }),
+    // placeholder rows are created in the same atomic unit as the
-      prisma.step.deleteMany({ where: { recipeId: id } }),
+    // delete+recreate of the recipe's content. An *existing* placeholder
-      prisma.recipeDiet.deleteMany({ where: { recipeId: id } }),
+    // line round-trips by its real `ingredientId` and is left untouched;
-      prisma.recipe.update({
+    // only a brand-new `placeholderName` line creates a row here.
+    const createdPlaceholders = await prisma.$transaction(async (tx) => {
+      await tx.recipeIngredient.deleteMany({ where: { recipeId: id } });
+      await tx.step.deleteMany({ where: { recipeId: id } });
+      const { resolved, createdPlaceholders } = await resolveIngredientLines(
+        input.ingredients,
+        viewerId,
+        tx,
+      );
+      await tx.recipe.update({
         where: { id },
         data: {
           name: input.name,
@@ -661,10 +838,10 @@ export async function updateRecipe(
           portions: input.portions,
           visibility: input.visibility,
           ingredients: {
-            create: input.ingredients.map((ingredient) => ({
+            create: resolved.map((line) => ({
-              ingredientId: ingredient.ingredientId,
+              ingredientId: line.ingredientId,
-              quantity: ingredient.quantity,
+              quantity: line.quantity,
-              unitId: ingredient.unitId,
+              unitId: line.unitId,
             })),
           },
           steps: {
@@ -672,26 +849,30 @@ export async function updateRecipe(
               description: step.description,
               picture: step.picture ?? null,
               order: index,
-              techSteps: {
+              // Same builder as `createRecipeInternal` — a resave must
-                create: matches.map((match, order) => ({
+              // persist the clause metadata (ingredients / utensils /
-                  techStepId: match.techStepId,
+              // temperatures), not just the technique span. Omitting it
-                  start: match.start,
+              // here is what left every edited recipe with temperature-less
-                  end: match.end,
+              // `preheat` steps, so `cooking-optimizer.ts` could never spot
-                  contextStart: match.contextStart,
+              // an oven-temperature conflict between two of them.
-                  contextEnd: match.contextEnd,
+              techSteps: { create: toStepTechStepCreateInputs(matches) },
-                  order,
             })),
           },
-            })),
         },
-          diets: { create: input.dietIds.map((dietId) => ({ dietId })) },
+      });
-        },
+      return createdPlaceholders;
-      }),
+    });
-    ]);
 
-    return toRecipeView(await findRecipeOrThrow(id, viewerId));
+    for (const placeholder of createdPlaceholders) {
+      analytics.recordEvent("ingredient.placeholder_created", {
+        actorId: viewerId,
+        context: { name: placeholder.name, ingredientId: placeholder.id, recipeId: id },
+      });
+    }
+
+    return toRecipeView(await findRecipeOrThrow(id, viewerId), await loadGlutenFreeDiet());
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
@@ -724,7 +905,7 @@ export async function deleteRecipe(
 
     await prisma.recipe.delete({ where: { id } });
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
@@ -752,7 +933,7 @@ export async function addFavorite(
       create: { userProfileId: viewerId, recipeId: id },
     });
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
@@ -763,7 +944,7 @@ export async function removeFavorite(id: number, viewerId: number): Promise<void
       where: { userProfileId: viewerId, recipeId: id },
     });
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
@@ -786,7 +967,7 @@ export async function assertRecipeVisible(
       throw new HttpError(404, ErrorCode.RECIPE_NOT_FOUND, `Recipe ${id} not found`);
     }
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
@@ -802,7 +983,7 @@ async function findRecipeOrThrow(id: number, viewerId: number): Promise<RecipeWi
     }
     return recipe;
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
@@ -821,7 +1002,7 @@ async function assertIsAuthor(
       throw new HttpError(403, ErrorCode.NOT_RECIPE_AUTHOR, "Only the recipe's author can do this");
     }
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
@@ -843,7 +1024,7 @@ async function assertIngredientsExist(ingredientIds: number[]): Promise<void> {
       );
     }
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
   }
 }
 
@@ -865,29 +1046,6 @@ async function assertUnitsExist(unitIds: number[]): Promise<void> {
       );
     }
   } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
+    throw err; // see suitableForHousehold()'s catch comment above
-  }
-}
-
-/** Throws `404 DIET_NOT_FOUND` if any of `dietIds` doesn't match a reference `Diet` row. */
-async function assertDietsExist(dietIds: number[]): Promise<void> {
-  try {
-    const uniqueIds = [...new Set(dietIds)];
-    if (uniqueIds.length === 0) return;
-    const found = await prisma.diet.findMany({
-      where: { id: { in: uniqueIds } },
-      select: { id: true },
-    });
-    if (found.length !== uniqueIds.length) {
-      const foundIds = new Set(found.map((diet) => diet.id));
-      const missing = uniqueIds.filter((id) => !foundIds.has(id));
-      throw new HttpError(
-        404,
-        ErrorCode.DIET_NOT_FOUND,
-        `Diet(s) not found: ${missing.join(", ")}`,
-      );
-    }
-  } catch (err) {
-    throw err; // see suitableForHouseholdWhere()'s catch comment above
   }
 }

apps/api/src/modules/reference/reference.routes.ts

@@ -6,6 +6,7 @@ import {
   getIngredients,
   getSources,
   getTechSteps,
+  getTours,
   getUnits,
   getUtensils,
 } from "./reference.service.js";
@@ -69,3 +70,14 @@ referenceRouter.get(
     res.status(200).json(await getSources());
   }),
 );
+
+// Enabled guided-tour scenarios + their steps — read by the web tour
+// engine (issue #42). Public like every route here: the general tour can
+// start right after signup, before onboarding finishes. Admin CRUD of
+// these lives under `/admin/api/tours` (issue #44).
+referenceRouter.get(
+  "/tours",
+  wrapAsyncHandler(async (_req, res) => {
+    res.status(200).json(await getTours());
+  }),
+);

apps/api/src/modules/reference/reference.service.ts

@@ -4,6 +4,7 @@ import type {
   IngredientView,
   SourceView,
   TechStepView,
+  TourScenarioView,
   UnitView,
   UtensilView,
 } from "@batch-cooking/shared";
@@ -76,11 +77,21 @@ export async function getUnits(): Promise<UnitView[]> {
 /**
  * All reference cooking techniques, ordered by key (see {@link getDiets}
  * for why) — small, static list (see `reference-seed-data.ts`'s
- * `TECH_STEPS`). Not consumed by the recipe UI yet — see {@link TechStepView}.
+ * `TECH_STEPS`).
+ *
+ * Excludes placeholder rows (`TechStep.isPlaceholder` — the free-text
+ * techniques users propose when the catalog falls short, issue #130): this
+ * is the *browsable* catalog, and a placeholder is a per-correction
+ * stand-in, not a real entry anyone should pick again.
  */
 export async function getTechSteps(): Promise<TechStepView[]> {
   try {
-    return await prisma.techStep.findMany({ orderBy: { key: "asc" } });
+    const techSteps = await prisma.techStep.findMany({
+      where: { isPlaceholder: false },
+      select: { id: true, key: true },
+      orderBy: { key: "asc" },
+    });
+    return techSteps.map((techStep) => ({ ...techStep, isPlaceholder: false, displayName: null }));
   } catch (err) {
     throw err; // see getDiets()'s catch comment above
   }
@@ -133,10 +144,16 @@ export async function getSources(): Promise<SourceView[]> {
  * and compatible diet regimes (see `IngredientDiet`) — same flattening
  * approach as {@link getAllergies}. Ingredients with no linked
  * allergen/diet come back with `allergens: []`/`diets: []`.
+ *
+ * Excludes placeholder rows (`Ingredient.isPlaceholder` — the free-text
+ * ingredients users type when the catalog falls short): this is the
+ * *browsable* catalog, and a placeholder is a per-recipe-line stand-in, not
+ * a real entry anyone should be able to pick again.
  */
 export async function getIngredients(): Promise<IngredientView[]> {
   try {
     const ingredients = await prisma.ingredient.findMany({
+      where: { isPlaceholder: false },
       include: {
         allergies: { include: { allergy: { include: { category: true } } } },
         diets: { include: { diet: true } },
@@ -159,6 +176,38 @@ export async function getIngredients(): Promise<IngredientView[]> {
         id: diet.id,
         key: diet.key,
       })),
+      // Always a real catalog row here (placeholders are filtered out above).
+      isPlaceholder: false,
+      displayName: null,
+    }));
+  } catch (err) {
+    throw err; // see getDiets()'s catch comment above
+  }
+}
+
+/**
+ * Every **enabled** guided-tour scenario with its ordered steps, for the
+ * web tour engine (issues #42/#44). A disabled scenario is hidden here
+ * without being deleted (an admin can toggle it back on). Steps come back
+ * ordered; `route`/`title`/`content` pass straight through.
+ */
+export async function getTours(): Promise<TourScenarioView[]> {
+  try {
+    const scenarios = await prisma.tourScenario.findMany({
+      where: { enabled: true },
+      orderBy: { key: "asc" },
+      include: { steps: { orderBy: { order: "asc" } } },
+    });
+    return scenarios.map((scenario) => ({
+      key: scenario.key,
+      name: scenario.name,
+      steps: scenario.steps.map((step) => ({
+        order: step.order,
+        route: step.route,
+        targetKey: step.targetKey,
+        title: step.title,
+        content: step.content,
+      })),
     }));
   } catch (err) {
     throw err; // see getDiets()'s catch comment above

apps/api/src/modules/shopping-list/shopping-list.routes.ts

@@ -3,6 +3,7 @@ import { HttpError } from "@batch-cooking/error-tools";
 import { wrapAsyncHandler } from "@batch-cooking/express-tools";
 import { ErrorCode, getShoppingListSchema } from "@batch-cooking/shared";
 import { Router } from "express";
+import { analytics } from "../../lib/analytics.service.js";
 import { type AuthLocals, requireAuth } from "../../middlewares/require-auth.js";
 import { getShoppingListForDate } from "./shopping-list.service.js";
 
@@ -31,6 +32,7 @@ shoppingListRouter.get(
     }
 
     const shoppingList = await getShoppingListForDate(res.locals.userProfile.houseId, date);
+    analytics.recordEvent("shopping_list.viewed", { actorId: res.locals.userProfile.id });
     res.status(200).json(shoppingList);
   }),
 );

apps/api/src/modules/shopping-list/shopping-list.service.ts

@@ -13,6 +13,11 @@ import { toIngredientView, toUnitView } from "../recipe/recipe.service.js";
 function shoppingListPlanningInclude() {
   return {
     items: {
+      // "Leftovers" items (`sourcePlanningItemId` set) reserve a portion of
+      // an already-cooked batch — nothing new to buy for them. Excluded
+      // here so they never reach `aggregateShoppingList`; counting them
+      // would double up the source recipe's ingredients (issue #34).
+      where: { sourcePlanningItemId: null },
       include: {
         recipe: {
           select: {
@@ -39,11 +44,11 @@ type PlanningWithIngredients = Prisma.PlanningGetPayload<{
   include: ReturnType<typeof shoppingListPlanningInclude>;
 }>;
 
-/** Accumulates a running sum per `(ingredientId, unitId)` pair while walking every planning item's ingredient lines — see {@link aggregateShoppingList}. */
+/** Accumulates a running sum per `(ingredientId, unitId)` pair while walking every planning item's ingredient lines — see {@link aggregateShoppingList}. `unit`/`quantity` are both `null` for a "selon le goût" seasoning line: nothing to sum, surfaced once. */
 interface RunningTotal {
   ingredient: IngredientView;
-  unit: UnitView;
+  unit: UnitView | null;
-  quantity: number;
+  quantity: number | null;
 }
 
 /**
@@ -65,16 +70,31 @@ function aggregateShoppingList(items: PlanningWithIngredients["items"]): Shoppin
   for (const item of items) {
     const scale = item.portions / item.recipe.portions;
     for (const recipeIngredient of item.recipe.ingredients) {
+      // A "selon le goût" seasoning line (no quantity/unit) — surfaced once
+      // per ingredient, never scaled or summed. Its key can't collide with a
+      // real `(ingredient, unit)` line for the same ingredient.
+      if (recipeIngredient.quantity === null) {
+        const seasoningKey = `${recipeIngredient.ingredientId}:toTaste`;
+        if (!totals.has(seasoningKey)) {
+          totals.set(seasoningKey, {
+            ingredient: toIngredientView(recipeIngredient.ingredient),
+            unit: null,
+            quantity: null,
+          });
+        }
+        continue;
+      }
+
       const key = `${recipeIngredient.ingredientId}:${recipeIngredient.unitId}`;
       const addedQuantity = Number(recipeIngredient.quantity) * scale;
 
       const existing = totals.get(key);
-      if (existing) {
+      if (existing && existing.quantity !== null) {
         existing.quantity += addedQuantity;
       } else {
         totals.set(key, {
           ingredient: toIngredientView(recipeIngredient.ingredient),
-          unit: toUnitView(recipeIngredient.unit),
+          unit: recipeIngredient.unit === null ? null : toUnitView(recipeIngredient.unit),
           quantity: addedQuantity,
         });
       }

apps/api/src/modules/sources/sources.service.ts

@@ -180,9 +180,20 @@ export async function previewSourceItem(
         ),
         loadIngredientCatalog(adapter.locale),
         loadUnitCatalog(adapter.locale),
-        prisma.techStep.findMany({ select: { id: true, key: true } }),
+        // Real catalog techniques only — a draft preview is never a saved
+        // recipe, so it can't carry a user-proposed placeholder technique
+        // (issue #130); `isPlaceholder`/`displayName` are the neutral values.
+        prisma.techStep.findMany({
+          where: { isPlaceholder: false },
+          select: { id: true, key: true },
+        }),
       ]);
-    const techStepById = new Map(techStepsByKey.map((techStep) => [techStep.id, techStep]));
+    const techStepById = new Map(
+      techStepsByKey.map((techStep) => [
+        techStep.id,
+        { ...techStep, isPlaceholder: false, displayName: null },
+      ]),
+    );
 
     const translatedIngredients = translateRecipeIngredients(
       parsed.ingredients,
@@ -260,6 +271,12 @@ export async function previewSourceItem(
                     ? [{ utensil, start: mention.start, end: mention.end, source: "auto" as const }]
                     : [];
                 }),
+                // Regex-extracted, no id to resolve — carried through as-is
+                // (same `source: "auto"` reasoning as this match above).
+                temperatures: match.temperatures.map((mention) => ({
+                  ...mention,
+                  source: "auto" as const,
+                })),
               },
             ]
           : [];

apps/api/src/scripts/backfill-runtime.ts

@@ -0,0 +1,72 @@
+import { prisma } from "../db/prisma.js";
+import { backfillTechSteps } from "./backfill-tech-steps.js";
+
+/**
+ * `backfill_state.key` for the tech-step clause-metadata backfill. Opaque,
+ * dated so a future metadata rework can add a second key rather than
+ * re-using this one.
+ *
+ * Why it's needed: `updateRecipe` and `backfill-tech-steps.ts` used to
+ * persist only a detected technique's span, never its ingredient / utensil /
+ * temperature children (only `createRecipeInternal` did). So every recipe
+ * ever edited through the UI, and every recipe imported before the create
+ * path learned temperatures, is missing the clause metadata that
+ * `cooking-optimizer.ts` needs to spot an oven-temperature conflict between
+ * two `preheat` steps. {@link backfillTechSteps} recomputes the whole
+ * `StepTechStep` sequence with the now-complete writer.
+ */
+const TECH_STEP_METADATA_BACKFILL_KEY = "step_tech_step_metadata_20260904";
+
+/**
+ * One-time data backfills for the production image — run via
+ * `node dist/scripts/backfill-runtime.js` in apps/api/Dockerfile's CMD,
+ * after `seed-runtime` and before the server starts.
+ *
+ * Unlike `seed-runtime` (idempotent by construction — it only upserts, so
+ * repeating it every container start is free), a backfill here *rewrites*
+ * existing rows and would be wasteful-to-harmful to repeat: the tech-step
+ * one re-hits `services/tech-step-intent-service` once per `Step`. So each
+ * backfill gates itself on a `backfill_state` row — present means "done,
+ * skip"; absent means "run it, then record it".
+ *
+ * A backfill failing must **not** keep the API down: it's a data-quality
+ * catch-up, not a correctness prerequisite (contrast `seed-runtime`, whose
+ * failure genuinely means missing reference data). So a failure here is
+ * logged, the marker is left unwritten (the next container start retries),
+ * and the process still exits 0 so the CMD chain reaches `node dist/server.js`.
+ * Only a failure to even read `backfill_state` propagates — at that point
+ * the database is unreachable and the server wouldn't start anyway.
+ */
+async function runOneTimeBackfills(): Promise<void> {
+  const alreadyDone = await prisma.backfillState.findUnique({
+    where: { key: TECH_STEP_METADATA_BACKFILL_KEY },
+  });
+  if (alreadyDone !== null) {
+    console.info(
+      `Backfill "${TECH_STEP_METADATA_BACKFILL_KEY}" already completed at ${alreadyDone.completedAt.toISOString()} — skipping.`,
+    );
+    return;
+  }
+
+  console.info(`Running one-time backfill "${TECH_STEP_METADATA_BACKFILL_KEY}"...`);
+  try {
+    const { total, changed } = await backfillTechSteps();
+    await prisma.backfillState.create({ data: { key: TECH_STEP_METADATA_BACKFILL_KEY } });
+    console.info(
+      `Backfill "${TECH_STEP_METADATA_BACKFILL_KEY}" done — ${changed}/${total} step(s) recomputed.`,
+    );
+  } catch (err) {
+    console.error(
+      `Backfill "${TECH_STEP_METADATA_BACKFILL_KEY}" failed — leaving it unrecorded so the next start retries. The API will still start.`,
+      err,
+    );
+  }
+}
+
+runOneTimeBackfills()
+  .then(() => prisma.$disconnect())
+  .catch(async (err) => {
+    console.error(err);
+    await prisma.$disconnect();
+    process.exit(1);
+  });

apps/api/src/scripts/backfill-tech-steps.ts

@@ -1,23 +1,27 @@
 import { pathToFileURL } from "node:url";
 import { prisma } from "../db/prisma.js";
 import { techStepClassifier } from "../lib/recipe-matching/tech-step-matcher.js";
+import { toStepTechStepCreateInputs } from "../lib/recipe-matching/tech-step-persistence.js";
 import { renumberStepTechSteps } from "../modules/recipe/recipe-tech-step-correction.service.js";
 
 /**
  * Recomputes every existing `Step`'s `"auto"`-sourced `StepTechStep`
- * entries against the *current* classifier
+ * entries — technique spans **and** their clause metadata (ingredients,
+ * utensils, temperatures) — against the *current* classifier
  * (`tech-step-matcher.ts`, delegating to `services/tech-step-intent-service`),
- * the same way `updateRecipe` does when a user resaves a recipe through the UI —
+ * the same way `updateRecipe` does when a user resaves a recipe through the
- * always `"fr"` (`DEFAULT_TECH_STEP_LOCALE` in `recipe.service.ts`; there's
+ * UI: both build the row payload from the shared
- * no persisted per-recipe locale to recover for a step that already
+ * {@link toStepTechStepCreateInputs}. Always `"fr"`
- * exists, so this matches real resave behavior exactly rather than
+ * (`DEFAULT_TECH_STEP_LOCALE` in `recipe.service.ts`; there's no persisted
- * guessing).
+ * per-recipe locale to recover for a step that already exists, so this
+ * matches real resave behavior exactly rather than guessing).
  *
  * Needed because tech-step detection only ever runs at create/update time
  * (`recipe.service.ts`'s `matchStepsTechSteps`), never retroactively — a
  * step saved before a classifier/corpus change (new vocabulary, or the
- * `contextStart`/`contextEnd` columns a previous session added) keeps
+ * `contextStart`/`contextEnd` columns a previous session added), or before
- * whatever it was matched with at the time until it's next resaved.
+ * the clause-metadata writers were wired into the *update* path at all,
+ * keeps whatever it was matched with at the time until it's next resaved.
  *
  * `"manual"`-sourced entries (a viewer's correction, applied immediately —
  * see `recipe-tech-step-correction.service.ts`'s `applyManualCorrection`)
@@ -72,19 +76,20 @@ export async function backfillTechSteps(): Promise<{ total: number; changed: num
         // into a clean 0..N-1 sequence right after — these just need to
         // not collide with `@@id([stepId, order])` for this insert).
         const startOrder = manualRows.reduce((max, row) => Math.max(max, row.order), -1) + 1;
-        await tx.stepTechStep.createMany({
+        // One `create` per row rather than a single `createMany`:
-          data: nonOverlappingMatches.map((match, index) => ({
+        // `createMany` cannot write the nested `ingredients` / `utensils` /
-            stepId: step.id,
+        // `temperatures` children, and silently dropping those is exactly
-            techStepId: match.techStepId,
+        // the bug this script shared with the old `updateRecipe` — see
-            order: startOrder + index,
+        // `toStepTechStepCreateInputs`. A backfill that leaves recipes
-            start: match.start,
+        // without their clause temperatures defeats the whole point of
-            end: match.end,
+        // running it (`cooking-optimizer.ts` needs them).
-            contextStart: match.contextStart,
+        const inputs = toStepTechStepCreateInputs(nonOverlappingMatches);
-            contextEnd: match.contextEnd,
+        for (const [index, input] of inputs.entries()) {
-            source: "auto",
+          await tx.stepTechStep.create({
-          })),
+            data: { ...input, stepId: step.id, order: startOrder + index, source: "auto" },
           });
         }
+      }
 
       await renumberStepTechSteps(tx, step.id);
     });

apps/api/src/scripts/prune-orphan-placeholders.ts

@@ -0,0 +1,27 @@
+import { prisma } from "../db/prisma.js";
+import { pruneOrphanPlaceholders } from "../modules/admin/admin-catalog.service.js";
+
+/**
+ * Deletes every placeholder `Ingredient` row (`Ingredient.isPlaceholder`)
+ * that no recipe references any more — the debris left behind when a recipe
+ * edit drops a placeholder line (the `RecipeIngredient` row goes, the
+ * `Ingredient` row stays). The admin catalog view has a button for this
+ * too; this script is the same operation for a cron / one-off cleanup:
+ *
+ *   pnpm --filter api exec tsx src/scripts/prune-orphan-placeholders.ts
+ *
+ * Delegates to `admin-catalog.service.ts` so the "what counts as an orphan"
+ * rule lives in exactly one place.
+ */
+async function main(): Promise<void> {
+  const { deleted } = await pruneOrphanPlaceholders();
+  console.info(`Pruned ${deleted} orphan placeholder ingredient(s).`);
+}
+
+main()
+  .then(() => prisma.$disconnect())
+  .catch(async (err) => {
+    console.error(err);
+    await prisma.$disconnect();
+    process.exit(1);
+  });