Layer 1 — Digest & retrieval
Compressed incident patterns: symptoms, how they were recognized, and proven resolutions. Seeded from historical incidents so new issues can be matched quickly.
- layer1-digest.json — digest records (pattern → what to check → resolution).
- tag-index.json — tag and keyword routing into those records (hundreds of index entries).
In Claude Code, check Layer 1 before improvising: if the issue matches a digest entry, follow that path.