Add LLM input logging and UI log pane

- Add log_queue to PipelineOrchestrator and log LLM inputs to UI
- Use entity_name for lore update logs instead of topic
- Pass log_queue into ConfirmationApp to display logs in UI
- Introduce a log pane and left/right pane layout in the UI
- Poll and render log messages via a new poll_log_updates worker
- Run log polling with Textual workers to avoid GC issues
- Fix ListView insertion by wrapping ListItem in a list
- Relax RAG similarity threshold from 0.7 to 0.5

src/rag/manager.py

@@ -162,7 +162,7 @@ class RAGManager:
         nodes = retriever.retrieve(query)
 
         # Filter nodes by similarity score (threshold > 0.7)
-        nodes = [node for node in nodes if node.score >= 0.7]
+        nodes = [node for node in nodes if node.score >= 0.5]
 
         if summarize:
             return self.summarize_results(query, nodes)