add Cmd+, shortcut to open Settings, Esc to close

[mrdiin]

Adds a Cmd+, keyboard shortcut to open the Settings panel as an ephemeral block (matching the gear icon behavior). Pressing Escape while focused on Settings or Tips closes the block.

Changes

• frontend/app/store/keymodel.ts: Register Cmd+, global shortcut that calls createBlock with ephemeral flag; extend Escape handler to close waveconfig and tips blocks when focused
• frontend/app/element/quicktips.tsx: Add "Open Settings" (Cmd+,) and "Close Settings / Close Search" (Escape) entries to the Tips block's Main Keybindings section
• docs/docs/keybindings.mdx: Document Cmd+, in the Global Keybindings table

Testing

Open Tips block to see the new shortcuts listed. Press Cmd+, to open Settings, press Escape to close it.

[CLAassistant]

All committers have signed the CLA.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: c63be0a0-a52f-4d6d-9068-14988a12eb7f

📥 Commits

Reviewing files that changed from the base of the PR and between 021db67 and 6e27bbb.

📒 Files selected for processing (3)

• docs/docs/keybindings.mdx
• frontend/app/element/quicktips.tsx
• frontend/app/store/keymodel.ts

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Walkthrough

This PR adds a new Settings keybinding feature for macOS. The implementation adds a global Cmd:, shortcut in keymodel.ts that creates a waveconfig block for the Settings view. The Escape key handler is extended to detect when a waveconfig or tips view is focused and closes it via layoutModel.closeFocusedNode(). The new keybindings are documented in the quicktips UI component and the keybindings reference documentation.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	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 summarizes the main changes: adding a Cmd+, shortcut to open Settings and Escape to close it, which directly matches the primary objective of the pull request.
Description check	✅ Passed	The description is well-related to the changeset, clearly outlining the three files modified and explaining the keyboard shortcut functionality being added, with testing instructions included.
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.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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