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

Side A converts a synchronous fetch action into a proper SSE streaming flow with progress states, error handling, retry/backoff via a oneshot result channel, and improved diagnostic logging in the reddit worker, while also cleaning up module structure (moving fetch UI code into its own module) — a real behavioral improvement with matching test updates. Side B adds a standalone dev CLI (sorterc) that reuses existing server logic for offline compile/lint; it's useful tooling but is additive/peripheral, mostly wrapping existing validate/ranking code without changing core system behavior or fixing bugs.