重构漏损识别请求，添加用户验证和输入准备

tests/api/test_leakage_endpoints.py

@@ -1,5 +1,6 @@
 from fastapi import FastAPI
 from fastapi.testclient import TestClient
+from types import SimpleNamespace
 
 from app.api.v1.endpoints import leakage as leakage_endpoint
 
@@ -7,12 +8,16 @@ from app.api.v1.endpoints import leakage as leakage_endpoint
 def _build_client() -> TestClient:
     app = FastAPI()
     app.include_router(leakage_endpoint.router, prefix="/api/v1/leakage")
+    app.dependency_overrides[leakage_endpoint.get_current_user] = lambda: SimpleNamespace(
+        username="tester"
+    )
     return TestClient(app)
 
 
 def test_identify_leakage_success(monkeypatch):
     def fake_run_leakage_identification(**kwargs):
         assert kwargs["network"] == "demo"
+        assert kwargs["username"] == "tester"
         return {"rows": [], "area_count": 0}
 
     monkeypatch.setattr(