Add TCP alongside serial and BLE as a first-class companion transport, end to
end: discovery/connection/selection learn a tcp: stable_id and host:port target,
--tcp and TCP config profiles reach a WiFi board or network proxy, and a network
companion -- which isn't discoverable -- is rebuilt into the picker from its
remembered endpoint.
Device picker gains the network-device affordances:
- "Add a network device" prompts for host:port, smoke-tests it, and remembers it.
The row is marked "- experimental" in the cautionary hue.
- Delete on a network row opens a chromeless Cancel/Remove confirm (Cancel left,
Remove right and default: Enter removes, Esc cancels), then DeviceStore.forget
prunes it and re-draws the list. Serial/BLE rows stay inert.
- The "Del remove" footer atom now follows the highlight, surfacing on the box's
bottom border only while the cursor sits on a deletable row; the box is sized
to the fullest footer so it never widens mid-navigation.
Folds in the accompanying courier, channels, and config refinements built along
the way. Screens stay readable at 72 cols; full suite green (745 tests).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>