The app now port-probes for a live CCS server and, if none is found,
starts the recorded detached server itself (launch.json, with a login-shell
fallback) before connecting, so double-clicking the app works without the
CLI. The offline panel gains a Start CCS action and a starting state. The
dropdown is sized to its measured content up to a screen-aware cap instead
of a fixed maxHeight, so it no longer collapses and clips rows.
Refs #1526, #1527
