refactor(eval+memoir)：精简内部评测路由与服务，composite/对话摘要与 judge 能力补强

- 访谈：新增 interview_state_hints，联动 orchestrator 与提示词
- 回忆录：story_pipeline_sync/state/memory/post_commit 与 Celery 任务调整
- 基建：开发用 celery broker、compose/development 脚本、依赖注入
- eval-web：移除数据集/实验/版本等页面与流式轮询，突出 Playground
- 文档与单测同步

api/app/features/evaluation/memoir_readiness_service.py

@@ -6,11 +6,12 @@ from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.features.conversation.models import Conversation, Segment
+from app.features.conversation.ws.pipeline import background_runner
 from app.features.evaluation.errors import (
     EvaluationBadRequestError,
     EvaluationNotFoundError,
 )
-from app.features.evaluation.schemas import MemoirPhase1ReadyOut
+from app.features.evaluation.schemas import MemoirPhase1ReadyOut, MemoirSubmitOut
 
 
 class MemoirReadinessService:
@@ -55,3 +56,44 @@ class MemoirReadinessService:
             checked_segment_ids=ids,
             pending_segment_ids=pending,
         )
+
+    async def submit_memoir_phase1_for_conversation(
+        self,
+        *,
+        conversation_id: str,
+    ) -> MemoirSubmitOut:
+        """本会话内尚待 Phase1 的 segment 合并提交 Celery（与对话结束 flush 语义对齐）。"""
+        cid = (conversation_id or "").strip()
+        if not cid:
+            raise EvaluationBadRequestError("conversation_id is required")
+        conv = await self._db.get(Conversation, cid)
+        if not conv or conv.deleted_at is not None:
+            raise EvaluationNotFoundError("conversation not found")
+        uid = str(conv.user_id)
+        stmt = (
+            select(Segment.id)
+            .where(
+                Segment.conversation_id == cid,
+                Segment.processed.is_(False),
+                Segment.topic_category.is_(None),
+            )
+            .order_by(Segment.created_at.asc())
+        )
+        result = await self._db.execute(stmt)
+        segment_ids = [str(i) for i in result.scalars().all()]
+        if not segment_ids:
+            return MemoirSubmitOut(
+                conversation_id=cid,
+                user_id=uid,
+                segment_ids=[],
+                celery_task_id=None,
+            )
+        task_id = await background_runner.flush_pending(
+            uid, extra_segment_ids=segment_ids
+        )
+        return MemoirSubmitOut(
+            conversation_id=cid,
+            user_id=uid,
+            segment_ids=segment_ids,
+            celery_task_id=task_id,
+        )