fix: align all 212 tests with current API and add CI workflows

Update integration tests to match actual endpoint responses: remove
data wrappers, use snake_case fields, correct HTTP methods (PUT→POST
for directory create), status codes (200→204 for mutations), and
request formats (params→json for 2FA). Fix root-level and unit tests
for DatabaseManager migration, model CRUD patterns, and JWT setup.
Add GitHub Actions and Gitea CI configs with ubuntu-latest + Python 3.13.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/conftest.py

@@ -23,16 +23,20 @@ from sqlalchemy.orm import sessionmaker
 sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
 
 from main import app
-from sqlmodels.database import get_session
+from sqlmodels.database_connection import DatabaseManager
 from sqlmodels.auth_identity import AuthIdentity, AuthProviderType
 from sqlmodels.group import Group, GroupClaims, GroupOptions
 from sqlmodels.migration import migration
 from sqlmodels.object import Object, ObjectType
 from sqlmodels.policy import Policy, PolicyType
 from sqlmodels.user import User, UserStatus
+import utils.JWT as JWT
 from utils.JWT import create_access_token
 from utils.password.pwd import Password
 
+# 设置测试用 JWT 密钥
+JWT.SECRET_KEY = "test_secret_key_for_jwt_token_generation"
+
 
 # ==================== 事件循环 ====================
 
@@ -146,7 +150,7 @@ def override_get_session(db_session: AsyncSession):
     async def _override():
         yield db_session
 
-    app.dependency_overrides[get_session] = _override
+    app.dependency_overrides[DatabaseManager.get_session] = _override
 
 
 # ==================== 测试用户 ====================