openai/gpt-chat-latest → B (3:2)

Side B fixes a functional import bug by introducing `apply_entity_under_parent` so Reddit child imports attach directly under the fetched parent instead of creating unintended `/comments/...` path structure, and updates the ranking panel to display imported titles for unranked children by passing the global tree into `ranking_panel`. Its integration tests also verify both self and children fetch flows with SSE morphs and rendered output, whereas Side A mainly changes vote URLs to use display paths and strengthens end-to-end testing of pool ranking behavior.