openai/gpt-chat-latest → B (5:1)

Side B introduces substantial new architecture: it replaces ephemeral Reddit entity updates with persisted `EntityImported` events, stores raw API payloads plus derived views, adds replay support, configurable API/OAuth endpoints, and an explicit user-triggered fetch flow with tests. Side A is a focused correctness fix that skips stickied/pinned subreddit posts during import and adds a targeted regression test, but its scope and long-term impact are much smaller than the persistence and fetch redesign in Side B.