dsh-ros2 v0.10.0

New: ros2_install — FishROS one-click ROS2 install (interactive)

When the host has no ROS2, the agent can — after user confirmation via approval — launch the FishROS one-click installer (http://fishros.com/install) and drive it interactively to completion.

• 38th tool ros2_install (L2, approval-gated):
  • check: probes ROS2 state — usable / installed-but-not-sourced (detects /opt/ros setup.bash, advises rosSetup, prevents accidental re-install) / absent
  • start (approval): launches the installer in an interactive PTY session (supports sudo password prompts and numeric menus)
  • send / status / stop: drive menus, watch progress, cancel anytime
• scripts/pty_session.py: pure-stdlib PTY session manager (daemonized; non-blocking master).
• installer param allows local path / file:// overrides (mirrors, offline, tests).
• Tests: 83 pass incl. end-to-end mock-installer menu flow; machine smoke verifies installed-but-not-sourced refusal. Docs + skill updated.