~anthropic/claude-sonnet-latest → B (65:35)

Side B implements a substantive architectural improvement: converting entity fetch from fire-and-forget to a proper SSE stream with typed FetchJobResult outcomes, oneshot completion signaling, richer tracing, and updated tests/client JS to consume the stream—this is a real feature/bugfix with lasting design value. Side A is a smaller UI polish commit (vote counts on garden rows, HUD unpin-via-POST instead of link) plus minor test additions, which is useful but more incremental and narrower in scope than B's protocol-level refactor.