[codex] Prune Swift, Get Started, and Distributed surfaces

[0xSero]

What changed

• removed the remaining Swift/iOS lane references from the repo surface, including the old Swift workflow and related hook/install references
• removed the frontend /get-started route and its Hermes helper/tests
• removed the distributed frontend/controller/contracts/docs surface, including routes, stores, OpenAPI entries, controller wiring, event contracts, and recipe fields
• removed generated docs/plans/_site output so the repo keeps only the source markdown plans
• updated docs and sidebar/setup copy so navigation and setup flows no longer reference removed surfaces

Why

This repo had multiple legacy surfaces that no longer belong in the current desktop/web product shape. Keeping them around increased maintenance cost, leaked dead navigation and API contracts, and made the repository heavier than it needs to be.

Impact

• /get-started and /distributed are gone from the built frontend
• distributed controller endpoints and events are gone from the runtime contract
• recipe resources no longer expose the removed distributed executor field
• the repo no longer carries the old Swift/TestFlight deployment lane

Validation

• cd controller && npx tsc --noEmit
• cd controller && bun test --timeout 15000
• cd frontend && npm run test
• cd frontend && npm run build
• cd frontend && PORT=3000 npm run start with route checks: / -> 200, /get-started -> 404, /distributed -> 404
• cd frontend && npm run desktop:dist
• verified canonical install path is /Applications/vLLM Studio.app with bundle id org.vllm.studio.desktop

Known caveats

• Docker staging verification is still blocked locally because the Docker daemon is unavailable on this machine
• after launch, the installed desktop app still mutates its own bundle under /Applications/vLLM Studio.app, which invalidates the installed app code signature; the packaged source app in frontend/dist-desktop/mac-arm64/vLLM Studio.app verifies cleanly before install/launch

[github-actions]

🎉 This PR is included in version 1.17.0 🎉

The release is available on GitHub release

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