apps/web/cypress/e2e/planning-page.cy.ts

@@ -182,6 +182,49 @@ describe("Planning grid", () => {
     cy.contains("Semaine du 10 au 16 août 2026").should("be.visible");
   });
 
+  // Issue #110 — a slot with many recipes used to stretch its `<td>`, and
+  // with it the whole row and the table, past `.planning-grid-wrapper`
+  // into a vertical scroll (the other cells of that row just gaining dead
+  // space). The chip list now scrolls inside its own cell instead.
+  it("keeps a heavy slot's recipes scrolling inside the cell, not stretching the grid", () => {
+    cy.intercept("GET", /\/planning\?/, {
+      statusCode: 200,
+      body: {
+        id: 1,
+        startDate: "2026-08-17T00:00:00.000Z",
+        finishDate: "2026-08-23T00:00:00.000Z",
+        items: Array.from({ length: 14 }, (_, i) => ({
+          id: i + 1,
+          weekDay: "lundi",
+          meal: "dejeuner",
+          portions: 2,
+          recipe: { id: i + 1, name: `Recette ${i + 1}` },
+        })),
+      },
+    });
+
+    cy.visit("/");
+    cy.get(".recipe-chip").should("have.length", 14);
+
+    // The busy cell's own recipe list is now the scroller: it's capped and
+    // scrolls its own overflow instead of stretching the `<td>` (and with
+    // it the whole row, then the table past `.planning-grid-wrapper` into a
+    // tall vertical scroll).
+    cy.get(".meal-cell__recipes").should(($lists) => {
+      const list = [...$lists].find(
+        (el) => el.querySelectorAll(".recipe-chip").length === 14,
+      ) as HTMLElement;
+      expect(list, "the 14-recipe cell's list").to.exist;
+      expect(getComputedStyle(list).overflowY).to.be.oneOf(["auto", "scroll"]);
+      expect(list.scrollHeight).to.be.greaterThan(list.clientHeight);
+      expect(list.clientHeight).to.be.lessThan(200);
+    });
+
+    cy.get(".planning-grid-wrapper").should(($w) => {
+      expect($w[0].scrollHeight).to.be.lessThan($w[0].clientHeight * 1.25);
+    });
+  });
+
   it("jumps to an arbitrary week by picking a day in the calendar popover", () => {
     cy.intercept("GET", /\/planning\?/, { statusCode: 200, body: null }).as("getPlanning");
 

apps/web/src/pages/planning/planning-page.scss

@@ -84,6 +84,18 @@ table.planning-grid {
   border-collapse: collapse;
   table-layout: fixed;
 
+  // Share the wrapper's height evenly across the five meal rows instead of
+  // letting each row size to its own content. A `height` on a table row is
+  // a minimum the browser then stretches to absorb the table's leftover
+  // height; an equal tiny value on every row spreads that leftover evenly,
+  // so the grid genuinely fills the screen rather than being only as tall
+  // as its busiest column (with dead space under the short ones). The
+  // per-cell scroll below is what then keeps a heavy slot from pushing its
+  // row past that share.
+  tbody tr {
+    height: 1px;
+  }
+
   th,
   td {
     border: 1px solid var(--color-border);
@@ -178,12 +190,32 @@ table.planning-grid {
   flex-direction: column;
   gap: var(--space-xs);
   height: 100%;
+  // The content must not be what defines the row's height: a slot with
+  // several recipes would otherwise stretch its `<td>`, and with it the
+  // whole row (every other day's cell gaining the same dead height under
+  // `vertical-align: top`), then the table past the wrapper into a
+  // vertical scroll. `min-height: 0` lets this flex column shrink to its
+  // share of the row so `.meal-cell__recipes` below can take over the
+  // scrolling.
+  min-height: 0;
 }
 
 .meal-cell__recipes {
   display: flex;
   flex-direction: column;
   gap: var(--space-xs);
+  // A slot only ever holds a handful of recipes in real use; past that the
+  // list scrolls inside the cell instead of stretching the `<td>` (and
+  // with it the whole row, then the table past `.planning-grid-wrapper`
+  // into a vertical scroll — issue #110). A `rem` cap rather than a `%` of
+  // the cell: percentage heights against a `<td>` don't resolve
+  // consistently across engines. `flex: 1` still lets the list use the
+  // row's spare height up to that cap. `.add-recipe-btn` is a flex sibling
+  // (outside this box), so it stays pinned just below, always reachable.
+  flex: 1;
+  min-height: 0;
+  max-height: 8.5rem;
+  overflow-y: auto;
 }
 
 .recipe-chip {