Workbench v0.1.0

First tagged public release.

• Added a self-hosted browser console and Cloudflare Worker entry point for the Workbench API.
• Added durable SQLite-backed conversations, queued runs, scheduler limits, SSE updates, and Pi/OpenCode runtime adapters.
• Added per-conversation Git worktrees, workspace controls, attachments, notifications, usage reporting, and backup tooling.
• Enabled bubblewrap isolation by default with environment allowlisting, credential masking, path guards, and process cleanup.
• Hardened new-chat workspace selection and transcript scroll behavior, and added staged UI asset validation with atomic promotion.
• Added CI, repository setup guidance, and regression coverage for runtime, security, scheduler, persistence, UI policies, and build assets.

Verification on the release commit: `npm run check`, `npm test`, and the isolated staging build. Live UI/edge E2E checks require a dedicated test service and are not part of CI.