## What kind of change does this PR introduce?
Bug fix.
## What is the current behavior?
Vercel install and project-link failures use transient toasts.
## What is the new behavior?
Failures remain visible below the relevant action and clear when the
user retries or changes a selection.
The Vercel mutation hooks expose errors without choosing their
presentation. Interstitial callers render them inline, while existing
non-interstitial callers explicitly retain their toasts.
| Before | After |
| --- | --- |
| <img width="1024" height="759" alt="Install Vercel Integration
Supabase"
src="https://github.com/user-attachments/assets/6348cdd2-220a-4ad8-89f9-7fc51de36a3c"
/> | <img width="1024" height="759" alt="Install Vercel Integration
Supabase"
src="https://github.com/user-attachments/assets/ecc50c4e-daab-4f6d-bf86-7282e2aff92c"
/> |
## To test
1. Switch to `dnywh/inline-vercel-errors` (this branch).
2. Open `apps/studio/pages/integrations/vercel/install.tsx`.
3. Find the `actionError` assignment immediately below
`useVercelIntegrationCreateMutation` and replace the whole assignment
with:
```tsx
const actionError = 'Creating Vercel integration failed: Test error'
```
4. With local Studio running and while signed in, open
`http://localhost:8082/integrations/vercel/install?code=test&configurationId=test&source=marketplace`
5. Confirm the error remains visible below **Install integration**. No
Vercel installation or real authorisation code is required.
6. Revert the temporary edit.
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
## Bug Fixes
* Improved error handling across Vercel project connection and
installation flows.
* Validation, duplicate-connection, and connection failures now appear
inline in the relevant setup steps.
* Errors clear automatically when the selected project or organization
changes.
* Notifications remain available in supported flows, including new
project creation and side-panel setup.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Danny White
9b3e0a9060