Merge pull request #34 from caezium/release/v0.2.2

Release v0.2.2 — signed + notarized

Merge pull request #32 from caezium/app-codex-403-fallback

App: surface Codex 403 + auto-fall back to OpenRouter (0.2.1)

Merge pull request #22 from caezium/release-0.2.0

Release 0.2.0 (+ ship nib skill 0.1.1)

Nib 0.1.0