fix(web): delay thread shortcut hints by 200 ms

[t3dotgg]

Thread shortcut hints appeared immediately during brief Command presses from dictation and other shortcuts.

Wait 200 ms before showing the hints. Both sidebars now use the existing shared delay.

Made with GPT-5.6 Sol using the Codex harness.

---

Note

Low Risk
Sidebar UI timing only; behavior is covered by existing createThreadJumpHintVisibilityController tests.

Overview
Thread jump shortcut labels in the sidebar no longer flash during brief Command-key presses (e.g. dictation or other chords that momentarily look like “show hints”).

THREAD_JUMP_HINT_SHOW_DELAY_MS is raised from 100ms to 200ms, and the main Sidebar stops toggling hints synchronously with the modifier. It now uses useThreadJumpHintVisibility, which waits for the delay before showing hints, hides immediately on release, and cancels a pending show if the key is released early—the same shared behavior LegacySidebar already relied on.

^{Reviewed by Cursor Bugbot for commit 97d9afd. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Increase THREAD_JUMP_HINT_SHOW_DELAY_MS from 100 to 200 in sidebar

• Raises the thread jump hint display delay from 100 ms to 200 ms to reduce premature hint flashing
• Extracts hint visibility state out of Sidebar into a new useThreadJumpHintVisibility hook, replacing the local useState(showJumpHints)
• Risk: Sidebar now depends on useThreadJumpHintVisibility for showThreadJumpHints and updateThreadJumpHintsVisibility — verify the hook is exported and the useEffect call site in Sidebar.tsx passes the correct boolean

^{Macroscope summarized 97d9afd.}

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[macroscopeapp]

One finding: the jump-hint delay test no longer derives its boundary from THREAD_JUMP_HINT_SHOW_DELAY_MS. The rest of the change (moving Sidebar onto the shared useThreadJumpHintVisibility hook, so both sidebars share one debounce contract) looks consistent.

^{Posted via Macroscope — UI Consistency}

[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	13.3 KiB	13.3 KiB	+30 B (+0.2%)	15.1 KiB	✅
Codex	Thread snapshot wire	6.9 KiB	6.9 KiB	+9 B (+0.1%)	7.3 KiB	✅
Codex	Live turn WebSocket wire	6.4 KiB	6.4 KiB	+21 B (+0.3%)	7.8 KiB	✅
Codex	Live turn WebSocket decoded	55.6 KiB	55.6 KiB	+44 B (+0.1%)	66.4 KiB	✅
Codex	Live turn messages	10	11	+1 (+10.0%)	21	✅
Claude	Total thread wire	13.3 KiB	13.3 KiB	+1 B (+0.0%)	15.1 KiB	✅
Claude	Thread snapshot wire	6.9 KiB	6.9 KiB	+6 B (+0.1%)	7.3 KiB	✅
Claude	Live turn WebSocket wire	6.5 KiB	6.4 KiB	−5 B (−0.1%)	7.8 KiB	✅
Claude	Live turn WebSocket decoded	56.4 KiB	56.4 KiB	0 B (0.0%)	66.4 KiB	✅
Claude	Live turn messages	11	11	0 (0.0%)	21	✅

Baseline: afc8342 · PR result: 97d9afd · Source CI: success

Scenario and decoded snapshot size

10 historical turns, 5 command tools per turn, 878.9 KiB retained MCP result per historical turn, and a 1.05 MiB retained result in the measured turn.

• Codex decoded thread snapshot: 109.4 KiB
• Claude decoded thread snapshot: 110.1 KiB

Updated in place by a trusted workflow. PR artifacts are strictly validated and never executed.

[macroscopeapp]

Approvability

Verdict: Approved at 97d9afd

Macroscope's review found this PR approvable — The PR makes a narrowly scoped sidebar UI timing adjustment, using an existing visibility controller to delay shortcut hints without changing navigation or other workflows. Its runtime impact is limited and self-contained.

Notes:

• No code objects were reviewed. Approvability was decided on eligibility alone.

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