openai/gpt-5.3-chat → A (9:1)

Side A makes a substantive architectural change: removing EntityImported events and the entire EntityStore, replacing them with ephemeral projection-cached content with TTL eviction and simplifying the event log to structural data only. This reduces log bloat and enforces API policy while adding eviction logic and updating replay semantics, whereas Side B mostly adds initial scaffolding (scripts, UI plumbing, parser, and notes) without clear integration or demonstrated necessity.