feat: add backup dashboard summary endpoint

backend/tests/test_backups.py

@@ -7,6 +7,32 @@ from media_library_viewer_api.main import app
 from media_library_viewer_api.services.settings_store import SettingsStore
 
 
+def test_dashboard_backups():
+    with tempfile.TemporaryDirectory() as tmpdir:
+        db_path = Path(tmpdir) / "test_settings.sqlite"
+        store = SettingsStore(db_path)
+        store.init_schema()
+
+        # Monkey-patch the global store for this test
+        import media_library_viewer_api.auth as auth_module
+        from media_library_viewer_api.services import settings_store
+
+        original_store = settings_store._store
+        settings_store._store = store
+        auth_module._API_KEY = None
+
+        try:
+            client = TestClient(app)
+            response = client.get("/api/dashboard/backups")
+            assert response.status_code == 200
+            data = response.json()
+            assert "total_jobs" in data
+            assert "success_rate_24h" in data
+        finally:
+            settings_store._store = original_store
+            auth_module._API_KEY = None
+
+
 def test_post_backup_report():
     with tempfile.TemporaryDirectory() as tmpdir:
         db_path = Path(tmpdir) / "test_settings.sqlite"