- update npm dependencies, including Vite 8.1.0 and TypeScript 6.0.3
- update bundled Deno engine locks and macOS arm64 binary to 2.8.3
- add npm run check:updates for npm and engine freshness checks
- ignore local agent/planning notes and remove tracked internal docs
- Add backendRegisteredIds and backendDispatchPromises for single dispatch enforcement
- Add detach_download_for_reconfigure to safely modify properties of active downloads
- Add applyProperties logic handling completed, failed, paused, and active queues
- Add extractValidDownloadUrls and fix multi-url paste handling
- Setup vitest and add useDownloadStore unit tests for backend registration lifecycle
NimBold