- Add besu hostname-prefix exclusions and JSON Schema for matrix rows - Generate 94-row matrix from committed live_inventory (non-besu guests) - Enrich VMIDs from deploy-targets descriptions (7804, 5000, 7801, …) - Python generate/validate; shell wrapper; hook validate-config-files.sh - Docs: task status, matrix doc links, MASTER_INDEX Co-authored-by: Cursor <cursoragent@cursor.com>