Context
The task confirmation flow checks write capability when the modal opens, but does not recheck it immediately before the submit write.
Expected
Each submission revalidates Vault write capability before mutating a task file.
Acceptance criteria
- Revoked or unavailable write capability prevents the submit write.
- The user receives a clear, non-destructive error.
- Add a regression test for permission changing while the modal remains open.
Context
The task confirmation flow checks write capability when the modal opens, but does not recheck it immediately before the submit write.
Expected
Each submission revalidates Vault write capability before mutating a task file.
Acceptance criteria