fix(workouts): order the list newest-first; show the year on past-year dates

The canonical picker re-sorts its output to startedAt ASC for its rollup callers, so the list route sliced the oldest page and recent workouts never surfaced on a long history — re-establish newest-first after the pick. And a workout from a previous year now shows its year so it is not read as this year's.

src/app/api/workouts/__tests__/canonical-dedup.test.ts

@@ -147,6 +147,28 @@ describe("GET /api/workouts — canonical dedup", () => {
     expect(body.data.meta.droppedDuplicates).toBe(1);
   });
 
+  it("returns the most recent workouts first", async () => {
+    // The canonical picker re-sorts its output to startedAt ASC (its rollup
+    // contract), so the list route must re-establish newest-first AFTER the
+    // pick — otherwise offset/limit slice the OLDEST page and recent workouts
+    // never surface. These two never cluster (different day + slot).
+    const older = makeRow("w-old", "APPLE_HEALTH", "2026-01-01T07:00:00Z");
+    const newer = makeRow("w-new", "APPLE_HEALTH", "2026-07-01T07:00:00Z");
+    vi.mocked(prisma.workout.findMany).mockResolvedValueOnce([
+      newer,
+      older,
+    ] as never);
+
+    const res = await GET(makeRequest());
+    const body = await res.json();
+
+    expect(res.status).toBe(200);
+    expect(body.data.workouts.map((w: { id: string }) => w.id)).toEqual([
+      "w-new",
+      "w-old",
+    ]);
+  });
+
   it("returns 401 without a session", async () => {
     vi.mocked(getSession).mockResolvedValueOnce(null);
     const res = await GET(makeRequest());

src/app/api/workouts/route.ts

@@ -143,6 +143,17 @@ async function buildWorkoutsResponse(
     userRow?.sourcePriorityJson ?? null,
   );
 
+  // `pickCanonicalWorkoutRows` re-sorts its output to `startedAt ASC` (its
+  // documented contract for the rollup callers). This surface is a
+  // most-recent-first list, so the DB `orderBy startedAt desc` must be
+  // re-established AFTER the pick — otherwise `offset`/`limit` slice the
+  // OLDEST page and a user with a long history never sees recent workouts.
+  canonical.sort((a, b) => {
+    const delta = (b.startedAt?.getTime() ?? 0) - (a.startedAt?.getTime() ?? 0);
+    if (delta !== 0) return delta;
+    return a.id.localeCompare(b.id);
+  });
+
   const page = canonical.slice(offset, offset + limit).map((row) => ({
     id: row.id,
     sportType: row.sportType,

src/components/insights/workout-list.tsx

@@ -87,10 +87,14 @@ function formatDate(
   timeFormat: TimeFormatPreference,
 ): string {
   const d = new Date(iso);
+  // Show the year whenever the workout is not from the current year, so a
+  // "Do., 16. Dez." from a previous year is never mistaken for this year's.
+  const showYear = d.getFullYear() !== new Date().getFullYear();
   return getDateTimeFormat(locale, {
     weekday: "short",
     day: "2-digit",
     month: "short",
+    ...(showYear ? { year: "numeric" as const } : {}),
     hour: "2-digit",
     minute: "2-digit",
     ...hourCycleOptions(timeFormat),