DEVICE-COMMUNICATION.md: exhaustive reference for every phone<->watch
exchange - triggers, wire datapoints, transports (T1-T4), and the internal
structures each side mutates - plus end-to-end sequences and failure modes.
BULLETPROOFING.md: ranked gap analysis (H1-H3 session lifecycle, M1-M4
stranding/stale-UI traps, L-tier) with code evidence, failure scenarios,
fix directions, and a recommended fix order.
Claude-Session: https://claude.ai/code/session_01PVNBVKp5bcq52X722uMjwT
