Fix garmin status showing stale connection state

Fetch fresh user data from database in status endpoint instead of
relying on auth store cookie, which may be stale after token save.

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

src/app/api/garmin/status/route.test.ts

@@ -9,11 +9,26 @@ import type { User } from "@/types";
 // Module-level variable to control mock user in tests
 let currentMockUser: User | null = null;
 
+// Create a mock PocketBase client that returns the current mock user
+const createMockPb = () => ({
+  collection: vi.fn(() => ({
+    getOne: vi.fn(() =>
+      Promise.resolve(
+        currentMockUser
+          ? {
+              ...currentMockUser,
+              garminTokenExpiresAt:
+                currentMockUser.garminTokenExpiresAt?.toISOString(),
+            }
+          : null,
+      ),
+    ),
+  })),
+});
+
 // Mock PocketBase
 vi.mock("@/lib/pocketbase", () => ({
-  createPocketBaseClient: vi.fn(() => ({
-    collection: vi.fn(),
-  })),
+  createPocketBaseClient: vi.fn(() => createMockPb()),
 }));
 
 // Mock the auth-middleware module
@@ -23,7 +38,8 @@ vi.mock("@/lib/auth-middleware", () => ({
       if (!currentMockUser) {
         return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
       }
-      return handler(request, currentMockUser);
+      const mockPb = createMockPb();
+      return handler(request, currentMockUser, mockPb);
     };
   }),
 }));