feat: detail page attachments, preview, and file metadata

Add file displayName/sortOrder APIs, result preview with Excel/video support,
unified attachment/link editing, feedback modal, and AuthProvider fix.
Run prisma migrate deploy on Render builds.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/routes/index.ts

@@ -6,6 +6,7 @@ import fileRoutes from './files';
 import kpiRoutes from './kpi';
 import columnRoutes from './columns';
 import milestoneRoutes from './milestones';
+import detailRoutes from './details';
 
 const router = Router();
 
@@ -16,5 +17,6 @@ router.use('/files', fileRoutes);
 router.use('/kpi', kpiRoutes);
 router.use('/columns', columnRoutes);
 router.use('/milestones', milestoneRoutes);
+router.use('/details', detailRoutes);
 
 export default router;