fix: backend improvements (customer health, tests, middleware, corpus)

backend/tests/test_p0_basics.py

@@ -27,8 +27,7 @@ class TestAdminAPI:
         )
         assert response.status_code == 200
         data = response.json()
-        assert "total_users" in data
-        assert "paid_users" in data
+        assert data["users"]["total"] >= 1
 
     async def test_admin_list_users(self, client: AsyncClient, test_user):
         test_user.role = "admin"
@@ -81,15 +80,15 @@ class TestPrivacyTerms:
     async def test_privacy_page_exists(self):
         import os
         path = os.path.join(
-            os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
+            os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))),
             "uni-app", "src", "pages", "agreement", "privacy.vue",
         )
-        assert os.path.exists(path), "privacy.vue not found"
+        assert os.path.exists(path), f"privacy.vue not found at {path}"
 
     async def test_terms_page_exists(self):
         import os
         path = os.path.join(
-            os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
+            os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))),
             "uni-app", "src", "pages", "agreement", "terms.vue",
         )
-        assert os.path.exists(path), "terms.vue not found"
+        assert os.path.exists(path), f"terms.vue not found at {path}"