fix(release): harden Today arrival rendering

src/lib/arrivals/__tests__/backfill-immunity.test.ts

@@ -23,9 +23,14 @@
  * classifier's return value. Testing the classifier alone would prove the
  * predicate correct while saying nothing about whether the seam consults it.
  */
-import { beforeEach, describe, expect, it, vi } from "vitest";
+import { beforeEach, describe, expect, it, vi, type Mock } from "vitest";
 
-const sendMock = vi.fn(async () => "job-id");
+// Typed explicitly (rather than via named implementation params) so
+// `.mock.calls[N][idx]` below keeps its three-argument shape without any
+// parameter sitting unused in the implementation itself.
+const sendMock: Mock<
+  (queue: string, payload: unknown, opts: unknown) => Promise<string>
+> = vi.fn(async () => "job-id");
 const annotateMock = vi.fn();
 let moduleMap: Record<string, boolean> = {};
 let timezone = "Europe/Berlin";

src/lib/jobs/__tests__/data-arrival-worker.test.ts

@@ -12,7 +12,7 @@
  *     job, and retrying against a ceiling that will not move until the local
  *     day rolls over is a loop.
  */
-import { beforeEach, describe, expect, it, vi } from "vitest";
+import { beforeEach, describe, expect, it, vi, type Mock } from "vitest";
 
 vi.mock("@/lib/logging/context", () => ({ annotate: vi.fn() }));
 vi.mock("@/lib/logging/background", () => ({
@@ -35,8 +35,15 @@ vi.mock("@/lib/jobs/workout-insight-generate-shared", () => ({
   enqueueWorkoutInsight: vi.fn(async () => ({ enqueued: true })),
 }));
 
-const createMany = vi.fn(async () => ({ count: 1 }));
-const updateMany = vi.fn(async () => ({ count: 1 }));
+// Typed explicitly (rather than via a named implementation param) so
+// `.mock.calls[N][0]` below keeps its one-argument shape without a param
+// sitting unused in the implementation itself.
+const createMany: Mock<(args: unknown) => Promise<{ count: number }>> = vi.fn(
+  async () => ({ count: 1 }),
+);
+const updateMany: Mock<(args: unknown) => Promise<{ count: number }>> = vi.fn(
+  async () => ({ count: 1 }),
+);
 const fakePrisma = { arrivalReaction: { createMany, updateMany } };
 
 const { runDataArrival } = await import("../data-arrival");

src/lib/queries/use-daily-digest.ts

@@ -35,12 +35,14 @@ export function useDailyDigest(enabled = true) {
     queryFn: () => apiGet<DailyDigest>("/api/daily/digest"),
     enabled,
     // Match the dashboard snapshot's freshness so the hero and the tile
-    // strip below it share one refresh cadence: a warm remount inside the
-    // minute is free; a background sync surfaces on focus; an open tab
-    // polls in the foreground only.
+    // strip share one refresh cadence. Every real window-focus transition
+    // refetches even inside the minute freshness window: arrival markers are
+    // written out-of-band by sync workers, so the browser has no mutation it
+    // could use to invalidate this cache. The 120 s foreground poll remains the
+    // fallback while the tab stays open.
     staleTime: 60_000,
     refetchOnMount: false,
-    refetchOnWindowFocus: true,
+    refetchOnWindowFocus: "always",
     refetchInterval: DASHBOARD_REFETCH_INTERVAL_MS,
     refetchIntervalInBackground: false,
     // One retry on transient network / 5xx (never 401/403) so a single