fix(hotkeys): make the cheat sheet dismissible after pointer interaction

[tannerlinsley]

The Hotkeys cheat sheet could stay open after a visitor clicked inside it, because focus left the element handling Escape. Its overlay also covered the toggle without providing a pointer dismissal control.

Add a visible Close button and listen for Escape while the sheet is open regardless of focus location. Follow-up to #1400.

AI review notes:
Validation: pnpm test passed. In a local browser fixture using the changed demo component, its real Hotkeys dependency, extracted unchanged LandingWindow wrapper and site CSS, opening the sheet, clicking inside, then pressing Escape dismissed it. Clicking Close also dismissed it. The rendered control was visually inspected. This is component-level browser coverage, not a full-site or physical touch-device test.

Summary by CodeRabbit

• Bug Fixes
  • Updated the cheat sheet’s close shortcut to work with the default keyboard target.
• New Features
  • Added a Close button to dismiss the cheat sheet.

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⚠️ No Changeset found

Latest commit: 956e8b0

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[coderabbitai]

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ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: defaults
• Review profile: CHILL
• Plan: Advanced
• Run ID: ac882ac9-d4e1-43f9-8417-e9c1914028c9

📥 Commits

Reviewing files that changed from the base of the PR and between de24473 and 956e8b0.

📒 Files selected for processing: 1

• src/components/landing/HotkeysLandingDemos.client.tsx

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

📝 Walkthrough

The cheat sheet’s Escape hotkey no longer targets cardRef. A Close button replaces the “Esc to close” hint and closes the cheat sheet when clicked.

Changes: Cheat Sheet Close Controls

Layer / File(s)	Summary
Configure and expose close controls src/components/landing/HotkeysLandingDemos.client.tsx	The Escape hotkey no longer targets cardRef and remains enabled while the cheat sheet is open. A Close button calls setSheetOpen(false).

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~8 minutes

Change: Bug fix

Suggested reviewers: kevinvandy

Merge Risk: ⚪ Minimal · up to 956e8

Visitors can dismiss the cheat sheet with Close or Escape after interacting with it; no concrete product or operational risk remains from this change.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the primary change: making the Hotkeys cheat sheet dismissible after pointer interaction.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches: 💡 1

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