Lock hybrid topology, Woo draft+SLAB-UAT-* UAT firebreak, client-authoritative
TECH-SPEC math, and sequenced inference after Gate C. Supersede obsolete
server-pipeline Phase 0 and flag Phase 2 offline/OCR/ruler as out of POC scope.
Rewrite PRD, tech spec, data model, and OpenAPI around the 2026-08-27
decisions: client-side mask/measure/crop, U2Net on demand, Woo as product
source of truth, draft-only local state. Architecture records topology C
through the status machine. Drop the old CONTENT-WOO spec until the
Call 2 prompt review finishes.