refactor(frontend): canonicalize active panel files

- replace rewrite/clean transitional panel files with canonical filenames

- update imports and navigation architecture notes to match runtime truth

- ignore local .codex_tmp workspace artifacts

frontend/src/ProductionWorkspace.jsx

@@ -9,7 +9,7 @@ import { PanelLoadingBody } from './components/app/AppLoadingFallbacks';
 
 const LazyDinsarProductionPanel = lazy(() => import('./DinsarProductionPanel'));
 const LazyTimeseriesProductionPanel = lazy(() => import('./TimeseriesProductionPanel'));
-const LazyDinsarProductsPanel = lazy(() => import('./DinsarProductsPanel.rewrite'));
+const LazyDinsarProductsPanel = lazy(() => import('./DinsarProductsPanel'));
 const LazyPsinsarCatalogPanel = lazy(() => import('./components/PsinsarCatalogPanel'));
 
 const shellStyle = {