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.

src/server/fastapi_app.py

@@ -17,6 +17,7 @@ from src.config.settings import settings
 
 # Import core functionality
 from src.core.SeriesApp import SeriesApp
+from src.server.api.analytics import router as analytics_router
 from src.server.api.anime import router as anime_router
 from src.server.api.auth import router as auth_router
 from src.server.api.config import router as config_router
@@ -70,6 +71,7 @@ app.include_router(health_router)
 app.include_router(page_router)
 app.include_router(auth_router)
 app.include_router(config_router)
+app.include_router(analytics_router)
 app.include_router(anime_router)
 app.include_router(download_router)
 app.include_router(websocket_router)