openai/gpt-chat-latest → A (9:1)

Side A implements a substantive architectural change: it removes persistent Reddit payloads from the event log (`EntityImported` and `EntityStore`), replaces them with ephemeral projection-cached content plus TTL eviction, updates replay/journaling accordingly, and adds tests verifying the new behavior. Side B is an unfocused seed commit containing planning documents, scripts, large new modules, and even pasted terminal output in source files, with little evidence of a coherent, production-ready change compared to A's deliberate redesign.