When pairing fails (e.g. broken Tailscale route, firewall blocking the
WS, expired token, etc.) the mobile app previously got stuck on
'Connecting…' forever with no signal about *where* it stalled.
Adds a structured connection-log stream from the rpc client and renders
it under the 'Connecting…' spinner on both pair-scan and pair-confirm.
Each phase emits a timestamped, color-coded entry: Opening WebSocket,
WebSocket open, Sent e2ee_hello, Received e2ee_ready, Authenticated,
WebSocket closed / Reconnect scheduled / Connect timeout / Handshake
timeout, etc. The log auto-scrolls and stays visible after a failure so
the user can see the last successful step.
Also fixes the silent infinite spinner: pairing now has a 25s overall
timeout — rpc-client retries forever by design (right behaviour for
live sessions), but for the *initial* pair we want a hard ceiling that
surfaces an actionable error with the log visible instead of spinning.
- Adds ConnectionLogEntry / ConnectionLogSink to transport/types.ts
- connect() now accepts { onStateChange, onLog } (legacy fn form kept)
- New ConnectionLog component (mono, level-coloured, +Xs elapsed)
- Pair flows track logs in a ref and render them in connecting/error
- 25s pairing-overall timeout that closes the client and surfaces a
'see log below for where it stalled' error
Co-authored-by: Orca <help@stably.ai>