fix(tasks): let the header picker actually rename

[maxkongerskov]

Why

The chat-header task menu advertised double-click to rename, but a single click always closed the menu first. That unmounted the row before dblclick (or a right-click) could start the editor, so the hover copy was a lie.

What

• Delay closing the menu after a switch click (500ms) so a double-click can still land; starting a rename cancels the dismiss.
• Ignore the companion click (detail >= 2) that browsers fire as part of a double-click, so it cannot switch/close the row.
• Right-click and a hover pencil also start the same inline rename.
• Escape cancels without saving (blur after unmount used to commit the cancelled draft).
• renameTask updates local state immediately so the new title does not flash back to the old name while the PATCH/SSE round-trip lands.

Test plan

• pnpm exec vitest run src/components/TaskPicker.test.ts src/state/store.test.ts
• pnpm exec tsc -b
• In the running app with 2+ tasks: open the header picker, double-click a row → inline input appears and the menu stays open past 500ms
• Right-click a row → same input
• Hover pencil → same input
• Escape restores the old title

A bot with only one task still shows the compact Task button (no menu), same as before — rename lives in the switcher once there are two contexts.

Summary by CodeRabbit

• New Features

  • Added task renaming via double-click, right-click, and explicit rename controls.
  • Improved rename input behavior, including selection, character limits, Enter-to-save, and Escape-to-cancel.
  • Added safer handling when dismissing menus, clicking outside, or creating tasks.

• Bug Fixes

  • Renamed tasks now update immediately in the task list while preserving other task titles.

• Tests

  • Added coverage for task picker interactions and task renaming behavior.

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• src/components/TaskPicker.tsx

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• src/components/TaskPicker.tsx

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📝 Walkthrough

Walkthrough

TaskPicker now supports task renaming through pointer gestures, a pencil button, and an enhanced rename input. It delays dismissal and clears rename state during menu actions. The store now updates the matching task title for renameTask.

Changes

Task renaming

Layer / File(s)	Summary
Store rename reducer src/state/store.tsx, src/state/store.test.ts	renameTask updates the matching task title by threadId. Tests verify that other task titles remain unchanged.
TaskPicker rename interactions src/components/TaskPicker.tsx, src/components/TaskPicker.test.ts	TaskPicker adds double-click, right-click, and pencil-button rename controls. It manages delayed dismissal, rename commits, cancellation, input limits, composition handling, and pointer-intent classification. Tests cover the exported intent helper and rename-related constants.

Estimated code review effort: 4 (Complex) | ~45 minutes

Merge Risk: ⚪ Minimal · up to 0d0d2

This localized task-renaming change is merge-ready after normal checks and review; no actionable merge-blocking risk remains.

Sequence Diagram(s)

sequenceDiagram
  actor User
  participant TaskPicker
  participant Store
  User->>TaskPicker: Double-click, right-click, or select rename
  TaskPicker->>TaskPicker: Commit the rename input
  TaskPicker->>Store: Dispatch renameTask with threadId and title
  Store->>Store: Update the matching task title

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🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 33.33% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 4 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the primary change: enabling task renaming from the header picker.
Description check	✅ Passed	The description clearly explains why the change is needed, what changed, and how it was verified. It also lists automated and manual tests. It omits dedicated Screenshots and Checklist sections, but t…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Description check

Explanation

The description clearly explains why the change is needed, what changed, and how it was verified. It also lists automated and manual tests. It omits dedicated Screenshots and Checklist sections, but the core required information is present.

• Fix all pre-merge checks with AI

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests

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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

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Inline comments:
In `@src/components/TaskPicker.tsx`:
- Line 262: Update the rename pencil button’s visibility classes in TaskPicker
so it becomes fully visible when keyboard-focused, while preserving the existing
hidden state and group-hover behavior for other states.

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ℹ️ Review info

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Configuration used: defaults

Review profile: CHILL

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Run ID: 4f29026d-8fac-4590-94c1-bf657cba73c2

📥 Commits

Reviewing files that changed from the base of the PR and between ec7b487 and 1edb576.

📒 Files selected for processing (4)

• src/components/TaskPicker.test.ts
• src/components/TaskPicker.tsx
• src/state/store.test.ts
• src/state/store.tsx

Included review availability: Your plan provides up to 4 included reviews per hour; 3 remain after this review.