~anthropic/claude-sonnet-latest → B (6:4)

B adds a genuine feature (explicit 'fetch from Reddit' action replacing implicit auto-fetch), refactors reddit.rs to persist the full raw payload and derive views from it (supporting event replay and future domains), adds config flexibility (dotenv, configurable API base) and includes fixture-backed unit and integration tests. A mainly deletes dead demo-counter scaffolding and introduces a settlement worker/caching layer for ranking, which is a reasonable perf improvement but narrower in scope and less tested than B's addition.