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3c5eace220
Implements fcntl.flock() based locking for serial transport to prevent USB serial conflicts when collect_companion and collect_repeater run simultaneously. This addresses Ofelia's limitation where no-overlap only prevents a job from overlapping with itself, not other jobs. Key changes: - Add connect_with_lock() async context manager to meshcore_client.py - Use non-blocking LOCK_NB with async polling to avoid freezing event loop - Only lock for serial transport (TCP/BLE don't need it) - 60s timeout with clear error message if lock cannot be acquired - Update collector scripts to use new context manager - Remove external flock from cron examples (now handled in Python) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>