openai/gpt-chat-latest → A (3:2)

Side A performs a substantial architectural consolidation by moving browser posting, checking, and redaction into a single POST /ui dispatch path, introducing a shared WebSession resolver to avoid repeated auth lookups, removing the separate web_post module, and updating HTML, routing, and integration tests to use the unified RPC-style interface. Side B fixes a real correctness issue by shortening RwLock read-guard lifetimes to avoid deadlocks in RoomCreate/RoomGrant and adds regression coverage, but its scope is limited to a specific locking bug whereas Side A delivers a broader, lasting simplification of the web API structure.