feat: add background information field to room model

- Add background_information field to Room database table and model
- Create database migration for the new field
- Update API schemas (CreateRoom, UpdateRoom) to handle background_information
- Integrate room context into AI summarization prompts
- Add background_information field to frontend room form
- Update TypeScript types from regenerated OpenAPI spec

The background information will be used to provide context for AI-generated
summaries, helping create more appropriate and relevant meeting summaries.

🤖 Generated with [opencode](https://opencode.ai)

Co-Authored-By: opencode <noreply@opencode.ai>

www/package.json

@@ -55,7 +55,7 @@
   "author": "Andreas <andreas@monadical.com>",
   "license": "All Rights Reserved",
   "devDependencies": {
-    "@hey-api/openapi-ts": "^0.48.0",
+    "@hey-api/openapi-ts": "^0.80.1",
     "@types/react": "18.2.20",
     "prettier": "^3.0.0",
     "vercel": "^37.3.0"