Fix E2E test reliability issues and stale data bugs

- Fix race conditions: Set workers: 1 since all tests share test user state
- Fix stale data: GET /api/user and /api/cycle/current now fetch fresh data
  from database instead of returning stale PocketBase auth store cache
- Fix timing: Replace waitForTimeout with retry-based Playwright assertions
- Fix mobile test: Use exact heading match to avoid strict mode violation
- Add test user setup: Include notificationTime and update rule for users

All 1014 unit tests and 190 E2E tests pass.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/app/api/cycle/current/route.test.ts

@@ -9,9 +9,29 @@ import type { User } from "@/types";
 // Module-level variable to control mock user in tests
 let currentMockUser: User | null = null;
 
+// Create mock PocketBase getOne function that returns fresh user data
+const mockPbGetOne = vi.fn().mockImplementation(() => {
+  if (!currentMockUser) {
+    throw new Error("User not found");
+  }
+  return Promise.resolve({
+    id: currentMockUser.id,
+    email: currentMockUser.email,
+    lastPeriodDate: currentMockUser.lastPeriodDate?.toISOString(),
+    cycleLength: currentMockUser.cycleLength,
+  });
+});
+
+// Create mock PocketBase client
+const mockPb = {
+  collection: vi.fn(() => ({
+    getOne: mockPbGetOne,
+  })),
+};
+
 // Mock PocketBase client for database operations
 vi.mock("@/lib/pocketbase", () => ({
-  createPocketBaseClient: vi.fn(() => ({})),
+  createPocketBaseClient: vi.fn(() => mockPb),
   loadAuthFromCookies: vi.fn(),
   isAuthenticated: vi.fn(() => currentMockUser !== null),
   getCurrentUser: vi.fn(() => currentMockUser),
@@ -24,7 +44,7 @@ vi.mock("@/lib/auth-middleware", () => ({
       if (!currentMockUser) {
         return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
       }
-      return handler(request, currentMockUser);
+      return handler(request, currentMockUser, mockPb);
     };
   }),
 }));

src/app/api/cycle/current/route.ts

@@ -40,9 +40,18 @@ function getDaysUntilNextPhase(cycleDay: number, cycleLength: number): number {
   return nextPhaseStart - cycleDay;
 }
 
-export const GET = withAuth(async (_request, user) => {
+export const GET = withAuth(async (_request, user, pb) => {
+  // Fetch fresh user data from database to get latest values
+  // The user param from withAuth is from auth store cache which may be stale
+  const freshUser = await pb.collection("users").getOne(user.id);
+
   // Validate user has required cycle data
-  if (!user.lastPeriodDate) {
+  const lastPeriodDate = freshUser.lastPeriodDate
+    ? new Date(freshUser.lastPeriodDate as string)
+    : null;
+  const cycleLength = (freshUser.cycleLength as number) || 28;
+
+  if (!lastPeriodDate) {
     return NextResponse.json(
       {
         error:
@@ -53,20 +62,16 @@ export const GET = withAuth(async (_request, user) => {
   }
 
   // Calculate current cycle position
-  const cycleDay = getCycleDay(
-    user.lastPeriodDate,
-    user.cycleLength,
-    new Date(),
-  );
-  const phase = getPhase(cycleDay, user.cycleLength);
+  const cycleDay = getCycleDay(lastPeriodDate, cycleLength, new Date());
+  const phase = getPhase(cycleDay, cycleLength);
   const phaseConfig = getPhaseConfig(phase);
-  const daysUntilNextPhase = getDaysUntilNextPhase(cycleDay, user.cycleLength);
+  const daysUntilNextPhase = getDaysUntilNextPhase(cycleDay, cycleLength);
 
   return NextResponse.json({
     cycleDay,
     phase,
     phaseConfig,
     daysUntilNextPhase,
-    cycleLength: user.cycleLength,
+    cycleLength,
   });
 });