feat: 添加 API 路由（公告/爬取/微信回调/调度器）+ 健康检查测试

tests/test_api/test_health.py

@@ -0,0 +1,12 @@
+import pytest
+from httpx import AsyncClient, ASGITransport
+from app.main import app
+
+
+@pytest.mark.asyncio
+async def test_health():
+    transport = ASGITransport(app=app)
+    async with AsyncClient(transport=transport, base_url="http://test") as client:
+        response = await client.get("/health")
+        assert response.status_code == 200
+        assert response.json() == {"status": "ok"}