feat(append): auto-append on register_consolidation + guard against overwrite

fix(persistence): use cumulative registry count instead of per-turn messages

feat(enrich): Phase 12 — soumission automatique au LLMDrops JDM

feat(phase-11): moteur d'inférence + consolidation + soumission

feat(phase-6 + mcp): JDM enrichment pipeline + expose verify_claim via MCP