Autodetect Go2 startup connectivity

[kezaer]

Stack:

1. Add Go2 local Wi-Fi doctor dimensionalOS/dimos#2378 - Add Go2 local Wi-Fi doctor
2. Add blueprint preflight hooks #1 - Add reusable blueprint/hardware preflight infrastructure
3. This PR - Apply startup preflights to Go2 connectivity
4. feat/go2-teleop-lan-setup - Harden Go2 LAN teleop/browser setup

Summary:

• Split Go2 LAN discovery into a reusable library plus the existing CLI compatibility wrapper.
• Add Go2 connectivity probes used by startup and doctor flows.
• Add owner-scoped Go2 single-robot and fleet startup preflights.
• Wire Go2 preflights into Go2 basic/coordinator/fleet/smart blueprints and direct module lookup entries.
• Keep startup fail-closed: missing single robot_ip can be auto-filled only when exactly one reachable Go2 is found; stale configured IPs fail; fleet runs require explicit robot_ips.
• Skip replay, simulation, mock, fake, and non-WebRTC modes so CI and intentional virtual runs remain offline and deterministic.
• Scope doctor endpoint checks to the running blueprint and avoid recommending image checks before startup.
• Document automatic Go2 startup resolution and fleet safety behavior.

Why:

• This turns the manual doctor from Add Go2 local Wi-Fi doctor dimensionalOS/dimos#2378 into startup safety automation without turning DimOS into a lab-wide robot auto-selector.
• Direct module runs and disabled-module blueprints should get the same safety behavior as normal blueprints.

Validation:

• Middle branch: /Users/kezaer/Git/dimos/.venv/bin/python -m pytest dimos/core/coordination/test_blueprints.py dimos/core/coordination/test_module_coordinator.py dimos/hardware/test_preflight.py dimos/robot/unitree/go2/test_connectivity.py dimos/robot/unitree/go2/test_startup.py dimos/robot/unitree/go2/cli/test_doctor.py -q (146 passed)
• Top of stack: /Users/kezaer/Git/dimos/.venv/bin/python -m pytest dimos/core/coordination/test_blueprints.py dimos/core/coordination/test_module_coordinator.py dimos/hardware/test_preflight.py dimos/robot/unitree/go2/test_connectivity.py dimos/robot/unitree/go2/test_startup.py dimos/robot/unitree/go2/cli/test_doctor.py dimos/teleop/phone/test_blueprints.py dimos/teleop/phone/test_phone_teleop_module.py dimos/teleop/quest/test_blueprints.py dimos/teleop/quest/test_quest_teleop_module.py dimos/web/dimos_interface/api/test_server_certs.py dimos/web/templates/test_rerun_dashboard.py dimos/web/websocket_vis/test_websocket_vis_module.py dimos/robot/cli/test_cli_startup.py -q (175 passed)
• /Users/kezaer/Git/dimos/.venv/bin/ruff check ...
• /Users/kezaer/Git/dimos/.venv/bin/mypy dimos/
• node --check dimos/teleop/quest/web/static/teleop.js
• phone teleop inline module script through node --check
• git diff --check