[codex] Support renamed physical layout subsystem

[cormoran]

Summary

• Prefer the renamed cormoran__physical_layouts Studio RPC subsystem while falling back to legacy zmk__physical_layouts firmware.
• Update the physical layouts proto package/generation and demo transport to the renamed upstream namespace.
• Add hook coverage for current and legacy subsystem discovery.
• Apply Prettier's existing cleanup in TrackballPage.tsx so repo formatting checks pass.

Validation

• npm test -- usePhysicalLayoutModules.test.tsx --runInBand
• npm run lint
• npm test -- --runInBand
• npm run format:check
• npm run build

[github-actions]

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_{Deployed from commit e13be90}