## Description
Moves the "Discard all" menu item to the last position in
`header_menu_items_new`, so it appears after the AI context and comment
items. This matches the intended UX ordering from
[WAR-7381](https://linear.app/warpdotdev/issue/WAR-7381/discard-all-should-be-the-last-item-in-the-list).
## Testing
Manually verified the ordering logic. No new tests needed — this is a
pure reordering of existing menu items with no behavioral changes.
## Agent Mode
- [x] Warp Agent Mode - This PR was created via Warp's AI Agent Mode
Co-Authored-By: Oz <oz-agent@warp.dev>
Co-authored-by: Oz <oz-agent@warp.dev>
## Description
Adds contextual tooltips to disabled git operation buttons so users
understand why they can't click them. Tooltips are intentionally limited
to **disabled states only** — enabled buttons don't get tooltips since
their labels are self-explanatory.
**Changes:**
- Code review header: "No changes to commit" on the disabled Commit
button; "No git actions available" on the disabled chevron
- Commit dialog: "Enter a commit message" on the disabled Confirm button
(only shown once file changes have loaded — silent during the async load
window)
- Bug fix: the PR #N button in the header was staying greyed out after
transitioning from a disabled Commit mode, because `ViewPr` mode never
called `set_disabled(false)`
Linear:
https://linear.app/warpdotdev/issue/APP-4261/git-buttons-should-all-have-tooltips
Warp conversation:
https://staging.warp.dev/conversation/27f5811f-22ea-4c4b-8d8f-47ff48a5b12b
Loom: https://www.loom.com/share/932cfb22039c4566bcc7a7343b624d81
## Testing
Manually verified:
- Commit button with no changes shows "No changes to commit" on hover
- Chevron with no changes shows "No git actions available" on hover
- Commit dialog Confirm button shows "Enter a commit message" once files
load but message is empty; no tooltip shown during async load
- PR #N button is no longer greyed out after committing all changes
No new automated tests added — these are tooltip strings on existing
button state logic that is already exercised by existing tests.
## Server API dependencies
N/A — client-only change.
## Agent Mode
- [x] Warp Agent Mode - This PR was created via Warp's AI Agent Mode
## Changelog Entries for Stable
CHANGELOG-IMPROVEMENT: Git operation buttons now show tooltips
explaining why they're disabled (e.g. "No changes to commit", "Enter a
commit message").
Co-Authored-By: Oz <oz-agent@warp.dev>
---------
Co-authored-by: Oz <oz-agent@warp.dev>
