Add a unit test for the useCommandPalette open/close and shortcut handling

[Baskarayelu]

Closes #982

Summary

• Add src/hooks/__tests__/useCommandPalette.test.ts with 6 focused test cases
• Covers open/close via programmatic API (open(), close())
• Asserts Cmd+K (metaKey) and Ctrl+K (ctrlKey) both toggle the palette
• Asserts plain K key (no modifier) does not open the palette
• Verifies the keydown listener is registered and removed on unmount
• Validates repeated toggle correctness across multiple key presses

Test plan

• Run pnpm test — all useCommandPalette tests pass
• Run pnpm lint — no lint errors introduced
• No regressions in existing test suites

🤖 Generated with Claude Code

[vercel]

@Baskarayelu is attempting to deploy a commit to the 1nonly's projects Team on Vercel.

A member of the Team first needs to authorize it.