新增小程序后端代码，包括数据库、路由、服务层等。

小程序前后端打通，包括登录、注册、绑定设备、查询绑定信息，修改小朋友名称等功能。

mini-program/app/middleware/auth.py

@@ -14,7 +14,7 @@ except ModuleNotFoundError:
     from security import auth_error_response, decode_access_token
 
 
-EXCLUDED_PATH_PREFIXES = (
+NO_AUTH_PATH_PREFIXES = (
     "/health",
     "/docs",
     "/redoc",
@@ -22,11 +22,22 @@ EXCLUDED_PATH_PREFIXES = (
     "/auth/login",
 )
 
-logger = logging.getLogger("app.auth")
+
+def _is_no_auth_path(path: str) -> bool:
+    for prefix in NO_AUTH_PATH_PREFIXES:
+        if path == prefix or path.startswith(f"{prefix}/"):
+            return True
+    return False
 
 
 def _is_excluded_path(path: str) -> bool:
-    for prefix in EXCLUDED_PATH_PREFIXES:
+    return _is_no_auth_path(path)
+
+logger = logging.getLogger("app.auth")
+
+
+def _is_no_auth_path(path: str) -> bool:
+    for prefix in NO_AUTH_PATH_PREFIXES:
         if path == prefix or path.startswith(f"{prefix}/"):
             return True
     return False
@@ -39,7 +50,7 @@ def install_auth_middleware(app: FastAPI) -> None:
         call_next: Callable[[Request], Awaitable],
     ):
         path = request.url.path
-        if request.method == "OPTIONS" or _is_excluded_path(path):
+        if request.method == "OPTIONS" or _is_no_auth_path(path):
             return await call_next(request)
 
         auth_header = request.headers.get("Authorization")
@@ -87,9 +98,9 @@ def install_auth_middleware(app: FastAPI) -> None:
                 db.execute(
                     text(
                         """
-                        SELECT id, status
-                        FROM chat_user
-                        WHERE id = :user_id
+                        SELECT user_id, status
+                        FROM parents
+                        WHERE user_id = :user_id
                         LIMIT 1
                         """
                     ),