Fix 404 error when saving user preferences

Routes using withAuth were creating new unauthenticated PocketBase
clients, causing 404 errors when trying to update records. Modified
withAuth to pass the authenticated pb client to handlers so they can
use it for database operations.

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

src/app/api/today/route.test.ts

@@ -12,24 +12,19 @@ let currentMockUser: User | null = null;
 // Module-level variable to control mock daily log in tests
 let currentMockDailyLog: DailyLog | null = null;
 
-// Mock PocketBase client for database operations
-vi.mock("@/lib/pocketbase", () => ({
-  createPocketBaseClient: vi.fn(() => ({
-    collection: vi.fn(() => ({
-      getFirstListItem: vi.fn(async () => {
-        if (!currentMockDailyLog) {
-          const error = new Error("No DailyLog found");
-          (error as { status?: number }).status = 404;
-          throw error;
-        }
-        return currentMockDailyLog;
-      }),
-    })),
+// Create mock PocketBase client
+const mockPb = {
+  collection: vi.fn(() => ({
+    getFirstListItem: vi.fn(async () => {
+      if (!currentMockDailyLog) {
+        const error = new Error("No DailyLog found");
+        (error as { status?: number }).status = 404;
+        throw error;
+      }
+      return currentMockDailyLog;
+    }),
   })),
-  loadAuthFromCookies: vi.fn(),
-  isAuthenticated: vi.fn(() => currentMockUser !== null),
-  getCurrentUser: vi.fn(() => currentMockUser),
-}));
+};
 
 // Mock the auth-middleware module
 vi.mock("@/lib/auth-middleware", () => ({
@@ -38,7 +33,7 @@ vi.mock("@/lib/auth-middleware", () => ({
       if (!currentMockUser) {
         return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
       }
-      return handler(request, currentMockUser);
+      return handler(request, currentMockUser, mockPb);
     };
   }),
 }));