[codex] ROY-20: install husky to check biome format and lint.

[0xroylee]

Linear issue: ROY-20

This PR was created by the PIV Loop workflow.

Includes:

• plan + implement session output
• separate review/testing session

[0xroylee]

PIV loop review for ROY-20

Result: PASS

Reviewed the main..HEAD changes on branch codex/roy-20 across CLI parsing, config polling, workflow polling/cancellation flow, Linear integration, and related tests, then executed all required quality gates (bun run check, bun run typecheck, bun test); all checks passed with no failing tests, and I did not find a concrete functional bug or regression in the submitted diff, though cancellation-state resolution still depends on Linear workflow naming/team configuration and is covered primarily by runtime behavior rather than dedicated unit tests.

No bugs found.