v0.15.6: Baked schema expert — no DESCRIBE at runtime, domain mastery 38/38
Expert knows the full eras2_production schema cold:
- All PKs, FKs, column names verified from DESCRIBE
- Junction tables: objektkunde (kunden↔objekte), objektadressen, kundenadressen
- Exact JOIN patterns baked into prompt
- No DESCRIBE/SHOW at runtime — plan once, execute
- Domain language responses (not SQL dumps)
Simplified ExpertNode.execute():
- Removed iterative DESCRIBE→re-plan loop
- Single plan+execute pass (schema is known)
- Faster: 1 LLM call for plan instead of 2-3
Domain mastery test (eras_domain.md): 38/38
- Customer overview, junction table JOINs, full hierarchy traversal
- Address lookup, Verbrauchsdaten, domain language, no DESCRIBE check
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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