- Backend: new /api/v1/feedback/attach endpoint uploads image to
Forgejo as an issue asset, then pins it as a comment so the
screenshot is visible inline on the issue
- Frontend: file input in feedback form (all types, max 5 MB)
with inline thumbnail preview and remove button
- Attach call is non-fatal: if upload fails after issue creation,
the issue is still filed and the user sees success
- Screenshot state clears on modal reset
Closes#82
