fix(deps): make sqlalchemy optional for test environments; add anime api tests

src/server/utils/dependencies.py

@@ -9,7 +9,11 @@ from typing import AsyncGenerator, Optional
 
 from fastapi import Depends, HTTPException, status
 from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
-from sqlalchemy.ext.asyncio import AsyncSession
+
+try:
+    from sqlalchemy.ext.asyncio import AsyncSession
+except Exception:  # pragma: no cover - optional dependency
+    AsyncSession = object
 
 from src.config.settings import settings
 from src.core.SeriesApp import SeriesApp