Implements node-facts.sh that emits JSON documents for monitoring and inventory:
- Reads COMPOSE_FILE from .env and iterates only those compose files
- Fails fast with JSON error when .env missing or COMPOSE_FILE empty (exit 2)
- Uses --max-time for all curl calls (5s general, 10s for peers)
- Bounded parallel worker count for node processing
- Supports avalanchego, op-node/kona, beacon REST, geth-family, besu, reth/op-reth
- Includes fixture-only test-node-facts.sh with schema validation
- Adds README entry for the new script
Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>
