dashcamd now waits for valid system time + GPS fix + drive gear before
starting a trip. Returns to waiting state on 10-min park timeout or
ignition off. Publishes DashcamState and per-trip DashcamFrames to
memory params. Status window shows stopped/waiting/recording states.
Updated CLAUDE.md with current display mode behavior, OmxEncoder port
details, speed limit warning thresholds, and dashcam param docs.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>