feat(web): double-click chat header title to rename thread

[UtkarshUsername]

What Changed

Double-clicking the thread title in the chat header now starts renaming, the same way it already does in the sidebar. Right-click > Rename still works, and clicking the chevron next to the title still opens the thread menu instantly.

Why

The sidebar has always offered double-click-to-rename, but the chat header only offered right-click > Rename. This brings the header to parity so renaming works the same way everywhere.

UI Changes

rename.mp4

Checklist

• This PR is small and focused
• I explained what changed and why
• I included a video for animation/interaction changes

Built by ox-alpha (x-preview-f-free) in opencode.

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Note

Low Risk
UI interaction-only change in the chat header; no auth, data, or backend behavior is affected. Desktop single-click menu open is delayed by 500ms, which is the main UX risk.

Overview
Double-clicking the thread title in the chat header now starts inline rename, matching the sidebar. Right-click rename still works; the chevron and keyboard activation still open the action menu immediately.

On desktop, a single click on the title waits 500ms before opening the native menu so a double-click can cancel it first (the native menu swallows the second click). Browser fallback menus open immediately. Pending opens are cleared on blur, thread change, unmount, context menu, or rename start.

useThreadActionMenu now exposes closeMenu so rename can dismiss an already-open native menu.

^{Reviewed by Cursor Bugbot for commit 4969cae. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Add double-click-to-rename to chat header thread title on desktop

• Double-clicking the title text in ChatHeader starts a thread rename and cancels any pending menu open. The chevron icon and keyboard activation are excluded from rename and open the menu immediately.
• On desktop, single-click opens the thread action menu after a 500ms delay (TITLE_MENU_OPEN_DELAY_MS) so a double-click can cancel it. In the browser fallback (no desktopBridge), the menu opens immediately.
• Adds closeMenu to useThreadActionMenu so the header can programmatically dismiss the native context menu when rename starts.
• Pending delayed opens are canceled on blur, thread change, unmount, context menu open, or rename start.
• Behavioral Change: single-clicking the title on desktop now has a 500ms delay before the action menu appears; clicking the chevron avoids this delay.

^{Macroscope summarized 4969cae.}

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[cursor]

Cursor Bugbot has reviewed your changes using high effort and found 2 potential issues.

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^{Reviewed by Cursor Bugbot for commit 39cb0c2. Configure here.}

[macroscopeapp]

Reviewed the thread-title click/double-click arbitration added to ChatHeader. Two findings on the new interaction logic; no styling, primitive, or Tailwind-ownership issues in this diff.

^{Posted via Macroscope — UI Consistency}

[macroscopeapp]

Approvability

Verdict: Not approved

Macroscope's review found this PR not approvable —

^{You can add or adjust custom eligibility rules. Learn more.}

[macroscopeapp]

One remaining gap in the title-menu arbitration: a pending menu-open survives the user moving on to another control. Details inline.

^{Posted via Macroscope — UI Consistency}