Clears the remaining no-unused-vars warnings across the dashboard app and
server, desktop main, and engine sources. Dead React state destructures are
collapsed to setter-only, unused props are underscore-prefixed to preserve
API shape, and unreferenced catch bindings are dropped. No behaviour change.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- Update the dashboard dev-server API client for compatibility with multiple backend response shapes
- Refine useDevServer polling and SSE lifecycle handling to improve status/action reliability
- Gate dev server navigation in header/mobile overflow and fix mobile preview header wrapping styles
- Expand DevServerView and useDevServer test coverage with isolated mocks and log/status assertions
- Document the devServerView experimental feature flag in settings reference
- Add DevServerView with command detection, start/stop/restart controls, live logs, and preview URL management
- Implement useDevServer with SSE log streaming, running-state polling, manual URL updates, and candidate detection support
- Extend dashboard API client mappings for dev-server candidate metadata, status fields, and preview URL helpers
- Integrate dev server navigation in header/mobile nav, normalize devserver view state persistence, and add feature-flag wiring
- Add/refresh DevServerView and useDevServer tests and replace legacy dev-server CSS with the new component styles
- Add a durable dev-server store and manager with persisted state/log history, process reconciliation, and SSE event buffering
- Wire new backend lifecycle APIs for status/history/start/stop/restart/stream and initialize/shutdown manager handling in server startup
- Add dashboard Dev Server view, hook-based hydration/stream handling, nav integration, and supporting styles
- Expand coverage with backend persistence/route tests and frontend DevServerView/useDevServer tests
- Document the dev-server persistence architecture in docs/architecture.md
