## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.
YES
## What kind of change does this PR introduce?
Refactor
## What is the current behavior?
The `/incident-banner` endpoint is implemented using the Pages Router.
## What is the new behavior?
The `/incident-banner` endpoint is moved to the App Router, enabling
caching of the upstream fetch. This does not turn on the querying from
the frontend yet, making that a separate PR so we can revert easily if
needed.
## Additional context
## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.
YES
## What kind of change does this PR introduce?
Refactor
## What is the current behavior?
`/incident-status` is handled via Pages Router.
## What is the new behavior?
`/incident-status` is handled via App Router, enabling use of Vercel
Data Cache to cache the upstream fetch.
## Additional context
Adding the first App Router route handler triggered `next typegen` (run
as `pretypecheck`) to generate `.next/dev/types/validator.ts`, which
imports all route files and expanded the type-checked graph. This
surfaced pre-existing `null`-safety errors in:
- `components/grid/SupabaseGrid.utils.ts` — `useSearchParams()` result
- `components/layouts/ProjectLayout/UpgradingState/index.tsx` —
`useSearchParams()` result
- `pages/project/[ref]/sql/quickstarts.tsx` — `useParams()` result
- `pages/project/[ref]/sql/templates.tsx` — `useParams()` result
These are fixed with optional chaining. The `tsconfig.json` change
(adding `.next/dev/types/**/*.ts` to `include`) is auto-generated by
Next.js and committed as correct behavior.
* Add vercel/ai. Commit additional next types.
* Add a API route in /app for streaming responses.
* Make the components work with streaming response.
* Add a dummy page to /app folder to fix a linking bug.
* Fix the dummy page.
* Fix the dummy page again.
* Add an empty layout to the app folder.
* Make the code snippets in the chat read-only.
* Remove queries and mutations for suggest.
* Reset the chat when closing the panel.
* Make the AI instructions a bit better.
* Don't render empty code blocks.
* Try to use remark for rendering the code. Style fixes for CodeBlock in AI assistant panel.
* Fix the styling of the definitions when sending them to OpenAI.
* Fix the css styling of the messages and code blocks.
* Move the suggest API route from app to pages folder.
* Revert the change for app API routes.
* Make the API route look like the rest of the API routes.
* Use Pre instead of Code because the <code> tags aren't working if between spans.
* Minor leftovers.
* Revert to using app route handlers.
* Change the wording on the diff header.
* Add nextjs types.
* Fix a missing import.
* Move AssistantChatForm back to db-new.
* Fix a build error.
* Rename the suggest route to assistant.
* Fix Joshen's comments.
Charis