🖥️ Agent-project workbench for DeepSeek Harness — sidebar app drawer + dockable split workspace + a live control room watching every project.

Complete Git worktree support for DeepSeek Harness: task-scoped isolated worktrees with per-repo manifests, workspace registration, bring-back to main, direct commit, and durable state. Reference: Qoder / Codex / Claude Code worktrees.