fix(sources): Manger Bouger sans filtre déroule tout le catalogue (#78)

Le parcours « tout voir » (filtre texte vide) de la source Manger Bouger
s'arrêtait après la 1re page (9 recettes) sur le serveur déployé.

Cause : `list()` ajoutait toujours un `&query=` final, même vide. Sur le
serveur déployé, `…/recettes?diet=ALL&page=N&query=` renvoyait la page 1
pour tout `N`, et le garde-fou anti-boucle de #38 (« 0 nouvel externalId
⇒ fin de liste ») coupait le défilement. La requête catalogue nue
`?diet=ALL&page=N` pagine correctement.

- `manger-bouger.ts` `list()` : n'ajoute `&query=` que si le terme de
  recherche est non vide (après `trim`), comme les adaptateurs voisins
  (marmiton / quitoque / ohmonbento). Le chemin filtré ne change pas.
- Commentaires `LIST_URL` / `hasMorePages` corrigés : la pagination
  « vérifiée en direct » ne valait que pour le chemin avec `query` texte.
- Tests `manger-bouger.test.ts` : `list({})` construit une URL sans
  paramètre `query` ; un `query` blanc = pas de filtre ; le catalogue nu
  pagine quand même (`nextCursor`) ; `list({ query: salade })` ajoute
  toujours `&query=salade` (non-régression).

Closes #78.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/api/src/sources/manger-bouger.ts

@@ -18,11 +18,13 @@ const SOURCE_KEY = "mangerBouger";
 // all (unlike marmiton.ts's search page) — but it's server-rendered, and a
 // plain GET carries the exact same Redux state the client hydrates from as
 // a `__NEXT_DATA__` script tag (see `extractNextData` below), which already
-// has everything `list()` needs. Verified live: `?query=<free text>` really
+// has everything `list()` needs. Verified live for the *search* path
-// filters server-side (not just a client-side URL update over an
+// (`?diet=ALL&page=N&query=<free text>`): `query` really filters
-// already-fetched page), and `page`/`hasMorePages` behave as real,
+// server-side (not just a client-side URL update over an already-fetched
-// consistent pagination — the best-behaved of this adapter family's three
+// page), and `page`/`hasMorePages` behave as real, consistent pagination.
-// sources on that front.
+// The *catalogue browse* path (no `query` term) must be the bare
+// `?diet=ALL&page=N` — a trailing empty `&query=` made the deployed server
+// repeat page 1 for every page (issue #78); `list()` below now omits it.
 const LIST_URL = "https://www.mangerbouger.fr/manger-mieux/la-fabrique-a-menus/recettes";
 const DETAIL_BASE_URL = "https://www.mangerbouger.fr/manger-mieux/la-fabrique-a-menus/recettes/";
 
@@ -42,7 +44,7 @@ interface MangerBougerListPageData {
     initialState?: {
       recipes?: {
         list?: MangerBougerListEntry[];
-        /** Whether a further page exists for the current `page`/`query`/`diet` combination — verified live: an out-of-range page comes back `false` with an empty `list` rather than repeating the last page or erroring, a cleaner end-of-results signal than either `marmiton.ts` (infers it from a 404) or `750g.ts` (this search has no real pagination at all). */
+        /** Whether a further page exists for the current `page`/`query`/`diet` combination — verified live on the `query`-term path: an out-of-range page comes back `false` with an empty `list` rather than repeating the last page or erroring, a cleaner end-of-results signal than either `marmiton.ts` (infers it from a 404) or `750g.ts` (this search has no real pagination at all). The catalogue-browse path (no `query`) only paginates when the request URL omits `&query=` entirely — see `LIST_URL` and issue #78. */
         hasMorePages?: boolean;
       };
     };
@@ -284,8 +286,18 @@ export const mangerBougerAdapter: RecipeSourceAdapter<{ html: string; url: strin
   async list(params: RecipeSourceListParams): Promise<RecipeSourceListResult> {
     try {
       const page = params.cursor ? Number(params.cursor) : 1;
-      const query = params.query ?? "";
+      // Only append `&query=` when there's an actual search term. A trailing
-      const listUrl = `${LIST_URL}?diet=ALL&page=${page}&query=${encodeURIComponent(query)}`;
+      // empty `&query=` on the "browse everything" path (filter absent) made
+      // the *deployed* server serve page 1 for every `page=N` — the
+      // infinite scroll then stopped after 9 recipes (issue #38's
+      // "0 new externalIds ⇒ end of list" guard cutting in). The bare
+      // `?diet=ALL&page=N` catalogue request paginates correctly. The
+      // sibling adapters (marmiton/quitoque/ohmonbento) already make their
+      // search param conditional; this one didn't.
+      const query = (params.query ?? "").trim();
+      const listUrl = `${LIST_URL}?diet=ALL&page=${page}${
+        query ? `&query=${encodeURIComponent(query)}` : ""
+      }`;
 
       let response: Response;
       try {

apps/api/test/recipe-sources/manger-bouger.test.ts

@@ -132,6 +132,59 @@ describe("mangerBougerAdapter", () => {
       expect(requestedUrl).to.include("query=cr%C3%A8me%20br%C3%BBl%C3%A9e");
     });
 
+    it("omits the query param entirely on the catalogue-browse path (no filter) — issue #78", async () => {
+      let requestedUrl: string | undefined;
+      globalThis.fetch = (async (url: string) => {
+        requestedUrl = url;
+        return new Response(htmlWithListNextData({ list: [], hasMorePages: true }), {
+          status: 200,
+        });
+      }) as typeof fetch;
+
+      await mangerBougerAdapter.list({});
+
+      expect(requestedUrl).to.equal(
+        "https://www.mangerbouger.fr/manger-mieux/la-fabrique-a-menus/recettes?diet=ALL&page=1",
+      );
+      expect(requestedUrl).not.to.include("query=");
+    });
+
+    it("treats a blank/whitespace query the same as no filter (no query param)", async () => {
+      let requestedUrl: string | undefined;
+      globalThis.fetch = (async (url: string) => {
+        requestedUrl = url;
+        return new Response(htmlWithListNextData({ list: [], hasMorePages: false }), {
+          status: 200,
+        });
+      }) as typeof fetch;
+
+      await mangerBougerAdapter.list({ query: "   " });
+
+      expect(requestedUrl).not.to.include("query=");
+    });
+
+    it("still paginates the catalogue-browse path (nextCursor set when hasMorePages)", async () => {
+      stubFetchHtml(htmlWithListNextData({ list: [], hasMorePages: true }));
+
+      const result = await mangerBougerAdapter.list({});
+
+      expect(result.nextCursor).to.equal("2");
+    });
+
+    it("still appends the query param when a real search term is given", async () => {
+      let requestedUrl: string | undefined;
+      globalThis.fetch = (async (url: string) => {
+        requestedUrl = url;
+        return new Response(htmlWithListNextData({ list: [], hasMorePages: false }), {
+          status: 200,
+        });
+      }) as typeof fetch;
+
+      await mangerBougerAdapter.list({ query: "salade" });
+
+      expect(requestedUrl).to.include("&query=salade");
+    });
+
     it("skips a list entry missing a slug or a name", async () => {
       stubFetchHtml(
         htmlWithListNextData({