feat(eval): memoir A/B chapter judging and eval-web parity with dialogue

- Judge baseline excerpt and library chapter separately; build_memoir_compare_summary for gate, nine-dim and leaf deltas.

- Memoir SSE chapter payload: baseline_judge, compare_summary, baseline_judge_error.

- MemoirJudgeOutput: loose score coercion and post-validate clamp; memoir judge prompt caps from settings.

- app-eval-web: two-column MemoirScoreCard layout, MemoirCompareSummary, chapter blocks and CSS.

- Add memoir_compare_summary, log_events, celery_log_context, memoir_pipeline_progress; tests and migration 0014.

- Misc: memory/evidence and enrichment paths, task/orchestrator updates, internal-eval docs, env examples.

api/app/agents/chat/orchestrator.py

@@ -216,7 +216,7 @@ class ChatOrchestrator:
                             messages=responses, skip_tts=False, memory_retrieval_trace=None
                         )
                     except Exception as e:
-                        logger.error(f"资料收集处理失败: {e}", exc_info=True)
+                        logger.exception("资料收集处理失败: {}", e)
                         return AgentChatTurn(
                             messages=["不好意思刚才没接住，你再说一遍好吗？"],
                             skip_tts=False,