Only auto-generate on version change when no AI note exists for that version

[jspada200]

Summary

Respect the “generate new notes on version change” setting by triggering generation only when the target version has no AI-generated note yet, and align the in-app setting description with that behavior.

Details

The UI includes a setting to generate notes when the active version changes. Today (or by current spec) this may run even when a note already exists for that version. Desired behavior: when the setting is on, run auto-generation on version change only if there is no generated note for that version yet. If a note already exists, do not regenerate automatically on that switch.

Update the copy/description for this setting in the settings menu so it accurately describes the behavior above.

Likely area: version-change effect / note generation hooks, settings UI copy.

Acceptance criteria

• With the setting enabled, switching to a version that already has a generated AI note does not trigger a new generation
• With the setting enabled, switching to a version without a generated note triggers generation as today
• With the setting disabled, behavior matches existing expectations (no spurious generation)
• Settings menu description for this option matches the actual behavior
• All changes tested locally
• All relevant automated tests complete successfully
• Verified no existing workflows broken
• For UI changes, screenshots or gif animations of the changes included
• Steps to test included in PR

Suggested labels

enhancement, Frontend