fdc32d431d
5 plans across 5 sequential waves covering: Alembic migration 0003 (null-user cleanup, NOT NULL constraint, quota reconciliation), presigned MinIO PUT upload flow with atomic quota enforcement, auth guards on all document/topic endpoints, flat-file settings retirement + per-user AI classification, and frontend quota bar with 3-step XHR upload progress. Verification passed across all 12 dimensions. All 8 phase requirements covered (STORE-03/04/05/06, SEC-04, DOC-03/04/05). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>