feat(frontend): add experimental Cmd/Ctrl+K command palette

[achalbajpai]

Fixes: #2694

What was done - Added an experimental Cmd/Ctrl+K command palette for quick navigation and safe actions (projects, sessions, PRs, new task, open orchestrator, toggle theme, new project). Also wired Sidebar → Settings → Search to the same palette.

Note: Enabled in dev + nightly builds only. Destructive actions are intentionally not exposed from the palette.

Dark Mode	Light Mode

Demo

Screen.Recording.2026-07-14.at.6.35.35.PM.mov

Tests

Manual testing

• End-to-end manual testing done on macOS
• Windows - need help verifying Ctrl+K and the same flows
• Linux - needs help verifying Ctrl+K and the same flows

[illegalcall]

Review against issue #2694 and the repository standards.

One finding cannot be attached to a code line: all four commits omit the conventional prefixes required by AGENTS.md (feat:, fix:, docs:, test:, or chore:). Please squash or reword them before merge.

Local verification: the renderer production build and typecheck passed, the frontend suite passed 614/614 tests, and the merge-tree against current main is clean.

[somewherelostt]

Thanks for contributing to Agent Orchestrator.

This PR is being picked up by the current external contributor on-call pair:

• @neversettle17-101
• @somewherelostt

If someone is already working on this, please continue as usual.
The on-call pair is added for visibility, tracking, and support, not to take over the work.
If you need help with review, direction, reproduction, or next steps, please tag @neversettle17-101 and @somewherelostt here.

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[illegalcall]

Requesting changes based on the current cca474201 head.

The blocking issue is the removed aoBridge import: after renderer route generation, npm run typecheck fails with TS2304 at both restart-to-update handlers, and those buttons would throw at runtime.

Commit hygiene also needs cleanup: 481c2c912, 8727b24e5, 349e50d69, and 1a77d4aed do not use the Conventional Commit prefixes required by AGENTS.md.

Local verification: 638/638 frontend tests passed and the renderer production build passed; typecheck failed only on the two missing-aoBridge references.