feat(auth)!: migrate customer metadata auth

Remove local auth and user-management endpoints in favor of Keycloak-backed metadata users, project context, admin metadata APIs, and agent auth context.

app/infra/audit/middleware.py

@@ -33,8 +33,6 @@ class AuditMiddleware(BaseHTTPMiddleware):
 
     # 需要审计的路径前缀
     AUDIT_PATHS = [
-        # "/api/v1/auth/",
-        # "/api/v1/users/",
         # "/api/v1/projects/",
         # "/api/v1/networks/",
     ]
@@ -193,20 +191,14 @@ class AuditMiddleware(BaseHTTPMiddleware):
             return None
         sub = None
         try:
-            key = (
-                settings.KEYCLOAK_PUBLIC_KEY.replace("\\n", "\n")
-                if settings.KEYCLOAK_PUBLIC_KEY
-                else settings.SECRET_KEY
-            )
-            algorithms = (
-                [settings.KEYCLOAK_ALGORITHM]
-                if settings.KEYCLOAK_PUBLIC_KEY
-                else [settings.ALGORITHM]
-            )
+            if not settings.KEYCLOAK_PUBLIC_KEY:
+                return None
+
+            key = settings.KEYCLOAK_PUBLIC_KEY.replace("\\n", "\n")
             payload = jwt.decode(
                 token,
                 key,
-                algorithms=algorithms,
+                algorithms=[settings.KEYCLOAK_ALGORITHM],
                 audience=settings.KEYCLOAK_AUDIENCE or None,
             )
             sub = payload.get("sub")
@@ -221,7 +213,7 @@ class AuditMiddleware(BaseHTTPMiddleware):
                 keycloak_id = UUID(sub)
                 user = await repo.get_user_by_keycloak_id(keycloak_id)
             except ValueError:
-                user = await repo.get_user_by_username(sub)
+                return None
             if user and user.is_active:
                 return user.id
         return None