Spin up an isolated agent to work a GitHub issue of kube-coder or any other repo checked out in the workspace. Given an issue number, pulls the issue text and launches a background Claude task that is BORN inside its own git worktree, branched from a freshly-fetched origin default branch, so it cannot work in the shared clone. Use whenever the user wants to "work on issue N", "start an agent on issue N", or set up a per-issue worktree. Also lists issue worktrees and their task status.
