Initial commit: iOS Build Server

- FastAPI backend with build queue, WebSocket logs, task management
- Vue 3 frontend with build/config/history views
- Xcode project build automation with IPA export
- Fix: initialize build_dir before try block to ensure cleanup on early failure

tests/test_api_health.py

@@ -0,0 +1,8 @@
+"""健康检查测试"""
+
+
+def test_health(client):
+    resp = client.get("/api/health")
+    assert resp.status_code == 200
+    data = resp.json()
+    assert data["status"] == "ok"