diff --git a/src/app/api/workouts/__tests__/batch-create.test.ts b/src/app/api/workouts/__tests__/batch-create.test.ts
index f9bd64a51..bb2c1c809 100644
--- a/src/app/api/workouts/__tests__/batch-create.test.ts
+++ b/src/app/api/workouts/__tests__/batch-create.test.ts
@@ -524,7 +524,19 @@ describe("POST /api/workouts/batch — user source-priority (v1.4.43 W9)", () =>
       }),
     );
     expect(res.status).toBe(200);
-    expect(prisma.user.findUnique).toHaveBeenCalledTimes(1);
+    // Counted by SELECT shape rather than by raw call count: the route also
+    // resolves the user's timezone and module map through the arrival seam,
+    // which are separate cached lookups. The guard here is that the
+    // source-priority blob is read ONCE PER BATCH and never once per workout —
+    // two workouts must still produce exactly one read.
+    const sourcePriorityReads = vi
+      .mocked(prisma.user.findUnique)
+      .mock.calls.filter(
+        (call) =>
+          (call[0] as { select?: Record<string, unknown> })?.select
+            ?.sourcePriorityJson === true,
+      );
+    expect(sourcePriorityReads).toHaveLength(1);
     expect(prisma.user.findUnique).toHaveBeenCalledWith({
       where: { id: "user-1" },
       select: { sourcePriorityJson: true },
diff --git a/src/lib/arrivals/__tests__/backfill-immunity.test.ts b/src/lib/arrivals/__tests__/backfill-immunity.test.ts
index a8229eeef..d04a13f71 100644
--- a/src/lib/arrivals/__tests__/backfill-immunity.test.ts
+++ b/src/lib/arrivals/__tests__/backfill-immunity.test.ts
@@ -25,7 +25,9 @@
  */
 import { beforeEach, describe, expect, it, vi } from "vitest";
 
-const sendMock = vi.fn(async () => "job-id");
+const sendMock = vi.fn(
+  async (_queue: string, _payload: unknown, _opts: unknown) => "job-id",
+);
 const annotateMock = vi.fn();
 let moduleMap: Record<string, boolean> = {};
 let timezone = "Europe/Berlin";
diff --git a/src/lib/jobs/__tests__/data-arrival-worker.test.ts b/src/lib/jobs/__tests__/data-arrival-worker.test.ts
index da2e0ec66..b57980226 100644
--- a/src/lib/jobs/__tests__/data-arrival-worker.test.ts
+++ b/src/lib/jobs/__tests__/data-arrival-worker.test.ts
@@ -29,8 +29,8 @@ vi.mock("@/lib/jobs/reminder/shared", () => ({
   workerLog: vi.fn(),
 }));
 
-const createMany = vi.fn(async () => ({ count: 1 }));
-const updateMany = vi.fn(async () => ({ count: 1 }));
+const createMany = vi.fn(async (_args: unknown) => ({ count: 1 }));
+const updateMany = vi.fn(async (_args: unknown) => ({ count: 1 }));
 const fakePrisma = { arrivalReaction: { createMany, updateMany } };
 
 const { runDataArrival } = await import("../data-arrival");