Refactor user endpoint tests to include pagination and response structure validation

- Updated tests for listing users to validate pagination and response format.
- Changed mock return values to include total count and pagination details.
- Refactored user creation mocks for clarity and consistency.
- Enhanced assertions to check for presence of pagination fields in responses.
- Adjusted test cases for user retrieval and updates to ensure proper handling of user data.
- Improved readability by restructuring mock definitions and assertions across various test files.

app/api/v1/dashboard.py

@@ -34,7 +34,8 @@ async def get_top_sounds(
     _current_user: Annotated[User, Depends(get_current_user)],
     dashboard_service: Annotated[DashboardService, Depends(get_dashboard_service)],
     sound_type: Annotated[
-        str, Query(description="Sound type filter (SDB, TTS, EXT, or 'all')"),
+        str,
+        Query(description="Sound type filter (SDB, TTS, EXT, or 'all')"),
     ],
     period: Annotated[
         str,
@@ -43,7 +44,8 @@ async def get_top_sounds(
         ),
     ] = "all_time",
     limit: Annotated[
-        int, Query(description="Number of top sounds to return", ge=1, le=100),
+        int,
+        Query(description="Number of top sounds to return", ge=1, le=100),
     ] = 10,
 ) -> list[dict[str, Any]]:
     """Get top sounds by play count for a specific period."""