Logging & Feedback

/from/hq/kindle/
├── queue/           — docs queued for push
├── pushed/          — docs successfully pushed (symlinks or dated copies)
├── log/
│   ├── pushed.log   — timestamp, doc path, Kindle IP
│   ├── errors.log   — connection failures, timeouts
│   └── status.log   — device state snapshots (battery, awake, KOReader running?)
└── bridge.pid       — agent process PID