router stabilization pass

Add split-shipping, Slack-first support UX, and router corpus updates

Recover KB eval quality over 92 and sync UI/docs

Ingest EX400 RX400 ER815 IR624 and Balance310X docs

Improve router MSRP/verizon parsing and parsec evidence; rerun evals

Complete 10-step router/pots normalization and deterministic resolver rollout

Remove Dan McDuffie assets and add FAQ fast-lane matching workflow

Integrate rag8 corpus and POTS intake template into canonical KB

Sync pending app, RAG, and evaluation updates

Import rag7 corpus docs into canonical RAG KB and rebuild ingestion artifacts

Import rag6 corpus into canonical RAG and rebuild ingestion artifacts

Update router RAG corpus, ingestion artifacts, and gap reports