Add dashboard error handling, seed data, and Docker host Ollama wiring

- Wrap getDashboardSnapshot in try/catch; return JSON 500 instead of crashing
- Add prisma/seed.ts with realistic Feb + Mar 2026 data: biweekly $2,850 pay
  schedule, $2,430 rent, expenses across all 8 categories
- Update Dockerfile and backup route for host Ollama runtime

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.