refactor(api): quarantine legacy container routes

apps/api/app/api/routes/__init__.py

@@ -1,5 +1,17 @@
-"""Compatibility exports for the canonical API router module."""
+"""API route package.
+
+The canonical aggregated router lives in `app.api.router`. This package must not
+import route modules at package-import time, otherwise importing any sub-route can
+trigger circular imports and optional infrastructure dependencies.
+"""
+
+
+def __getattr__(name: str):
+    if name in {"api_router", "health_router"}:
+        from app.api.router import api_router, health_router
+
+        return {"api_router": api_router, "health_router": health_router}[name]
+    raise AttributeError(name)
 
-from app.api.router import api_router, health_router
 
 __all__ = ["api_router", "health_router"]

apps/api/app/api/routes/auth.py

@@ -1,6 +1,14 @@
 """
-认证 API 路由
+Legacy full-auth API route skeleton.
+
+This module is intentionally disabled until the DI container/auth ports are rebuilt.
+Do not mount it directly; use `auth_simple.py` only as the current compatibility route.
 """
+
+raise RuntimeError(
+    "apps.api.app.api.routes.auth is disabled: rebuild DI container before mounting full auth routes"
+)
+
 from fastapi import APIRouter, HTTPException, status, Depends, Request
 from pydantic import BaseModel, EmailStr
 

apps/api/app/api/routes/workspaces.py

@@ -1,6 +1,14 @@
 """
-Workspace API 路由（完整实现）
+Legacy workspace API route skeleton.
+
+This module depends on the removed DI container and is intentionally disabled until
+workspace use cases are wired through the canonical API composition root.
 """
+
+raise RuntimeError(
+    "apps.api.app.api.routes.workspaces is disabled: rebuild DI container before mounting workspace routes"
+)
+
 from fastapi import APIRouter, HTTPException, status, Depends
 from pydantic import BaseModel, EmailStr
 from typing import List