feat(api)!: memory single chain — async MemoryService, strict eval closure

Route all memory ingest/retrieve/enrichment/compaction through async MemoryService.
Remove legacy sync memory implementations (ingest/retrieve/compaction); Celery and
memoir Phase2 call asyncio.run into MemoryService-backed helpers.

Memoir Phase1 batch ingest uses MemoryService.ingest_transcripts_batch; drop chapters.
evidence_bundle_json mirror (Alembic 0015). Evaluation uses snapshot/link-only bundles;
raise EvidenceClosureMissing instead of partial/fallback lineage tiers.

Split memoir state into NarrativeCoverageState and InterviewControlState; delete the
_interview_meta_store adapter layer. Remove rolling-query and recent-fact fallback
settings from config and evidence assembly.

Update judges, docs, tests, and PlaygroundPage alignment.

Made-with: Cursor

api/app/features/story/repo.py

@@ -210,7 +210,7 @@ def list_recent_stories_for_evidence_sync(
     query: str | None = None,
     limit: int = 5,
 ) -> list[Story]:
-    """同步会话版 `list_recent_stories_for_evidence`（Celery / retrieve_evidence_sync）。"""
+    """同步会话版 `list_recent_stories_for_evidence`（非 memory evidence 主链）。"""
     stmt = select(Story).where(Story.user_id == user_id).where(Story.status == "active")
     q = (query or "").strip()
     if q: