Before:

1. Agent tries to edit unsaved file
2. Tool call fails with error telling the agent to ask the user to save
or discard edits
3. User types save/restore
4. Agent uses save/restore tool


https://github.com/user-attachments/assets/c94dd361-e8e0-48ee-be31-da8afe594419

After:

1. Agent tries to edit unsaved file
2. User is prompted to save/restore file
3. User accepts/rejects or saves/discards file manually


https://github.com/user-attachments/assets/1d98a0c4-4420-4426-94f2-42355de230be

Release Notes:

- agent: Improved UX when agent tries to edit unsaved buffer

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Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>