feat(api): standardize REST contracts and auth

tests/api/test_leakage_endpoints.py

@@ -5,7 +5,7 @@ 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.include_router(leakage_endpoint.router, prefix="/api/v1")
     app.dependency_overrides[leakage_endpoint.get_current_keycloak_username] = (
         lambda: "tester"
     )
@@ -23,7 +23,7 @@ def test_identify_leakage_success(monkeypatch):
     )
     client = _build_client()
     response = client.post(
-        "/api/v1/leakage/identify/",
+        "/api/v1/leakage-identifications",
         json={
             "network": "demo",
             "scada_start": "2026-01-01T00:00:00+08:00",