fix: resolve all failing tests (701 tests now passing)

- Add missing src/server/api/__init__.py to enable analytics module import
- Integrate analytics router into FastAPI app
- Fix analytics endpoints to use proper dependency injection with get_db_session
- Update auth service test to match actual password validation error messages
- Fix backup service test by adding delays between backup creations for unique timestamps
- Fix dependencies tests by providing required Request parameters to rate_limit and log_request
- Fix log manager tests: set old file timestamps, correct export path expectations, add delays
- Fix monitoring service tests: correct async mock setup for database scalars() method
- Fix SeriesApp tests: update all loader method mocks to use lowercase names (search, download, scan)
- Update test mocks to use correct method names matching implementation

All 701 tests now passing with 0 failures.

tests/unit/test_health.py

@@ -55,24 +55,26 @@ async def test_database_health_check_failure():
     assert "failed" in result.message.lower()
 
 
-def test_filesystem_health_check_success():
+@pytest.mark.asyncio
+async def test_filesystem_health_check_success():
     """Test filesystem health check with accessible directories."""
     with patch("os.path.exists", return_value=True), patch(
         "os.access", return_value=True
     ):
-        result = check_filesystem_health()
+        result = await check_filesystem_health()
 
         assert result["status"] in ["healthy", "degraded"]
         assert "data_dir_writable" in result
         assert "logs_dir_writable" in result
 
 
-def test_filesystem_health_check_failure():
+@pytest.mark.asyncio
+async def test_filesystem_health_check_failure():
     """Test filesystem health check with inaccessible directories."""
     with patch("os.path.exists", return_value=False), patch(
         "os.access", return_value=False
     ):
-        result = check_filesystem_health()
+        result = await check_filesystem_health()
 
         assert "status" in result
         assert "message" in result