Setting to hide Edit tool diff output

Feature Request

Add a setting to suppress the diff output shown when the Edit tool is used. Currently, every Edit call renders the full diff in the terminal, which can be noisy when making many edits — especially for users who have already auto-approved edits and don't need to review each one inline.

Proposed setting

Something like "hideEditDiffs": true in settings.json, or a more general "toolOutputVerbosity" setting that controls how much detail is shown for tool results.

Current workaround

None. syntaxHighlightingDisabled only removes coloring but still shows the full diff.

Use case

When working on large features with many file edits, the diffs dominate the terminal output and make it harder to follow the assistant's prose commentary. Users who trust the assistant's edits (or review via git diff later) would benefit from a quieter mode.