modem-tune

# Modem Tune -- IMEI Reconfiguration Automates changing the reported IMEI on the GL.iNet GL-XE300 travel router (Quectel EG25-G modem) over SSH. Personal-hardware tool. All mechanics live in `scripts/modem-tune.py`; this skill is the conversational wrapper that owns the confirmation gate before any reset. Spec: `docs/superpowers/specs/2026-05-30-modem-tune-skill-design.md` (data overlay: `.heading-os-data/docs/superpowers/specs/2026-05-30-modem-tune-skill-design.md`). Device + procedure reference: `outputs/operations/reference/gl-inet-mobile-router-imei-reconfig.md`. ## Modes - **Default / full rotation** (`/modem-tune`): generate -> apply -> confirm -> reset -> verify. - **`/modem-tune status`**: read the live IMEI, SIM, network, and signal. No change. - **`/modem-tune revert`**: restore the factory IMEI (from `config/modem.json`), then confirm + reset + verify. ## Pre-flight The router is on the LAN (`192.168.8.1`) and reached over SSH with credentials from `.env` (`MODEM_HOST`, `MODEM_USER`, `MODEM_SSH_PASSWORD`). No VPN pre-flight applies -- this is a local authenticated device, not a public web service. If `MODEM_SSH_PASSWORD` is missing the engine exits with a clear error; tell the CEO to add the `MODEM_*` block to `.env` and stop. ## Phase 0 -- Status (always run first) Run `python3 scripts/modem-tune.py status`. Show the CEO the live IMEI, its Luhn validity, SIM state, operator, and signal. This confirms the router is reachable before anything is changed. Fo...