Comment on: [Feature Request] Optimize Worker Workspace Size and Enable Headless IPC

Follow-up after a3b124c. The remaining subprocess/headless gap is now narrower: - `SubprocessBackend` now implements runtime delivery for headless workers by queueing the rendered runtime notification into the agent inbox - `runtime inject` therefore works for registered subprocess agents instead of failing with "backend does not support runtime injection" - `runtime watch` now explicitly rejects subprocess agents so we do not create an inbox self-routing loop Validation on 2026-04-15: - `ruff check clawteam tests` - `pytest -q` -> `573 passed` What is still not true: - subprocess does not support live terminal keystroke injection, because there is no interactive TUI to target - delivery is mailbox-based headless IPC, not pane/block injection like tmux/wsh At this point I would describe #45 as: workspace slimming complete, interactive IPC covered for tmux/wsh, and headless subprocess delivery available via inbox-backed runtime queuing. The only remaining part would be a separate ex...