M3a：息壤三级记忆域——归真触发提取管线/白名单明忆/重忆确认/正影版本链/删除墓碑/双通道召回注入，退役旧记忆-抽取-反思-大周天-演化管线（迁移 004，验收 7 用例）

backend/app/services/serializers.py

@@ -16,7 +16,6 @@ from app.models.governance import (
     WorldEntity,
 )
 from app.models.imports import CharacterImportJob, ImportItem
-from app.models.memory import Memory
 from app.models.personality import PersonalityProposal, PersonalityVersion
 from app.models.runtime import Event, Run
 from app.models.safety import AuditEvent
@@ -33,7 +32,6 @@ from app.schemas.admin import (
 from app.schemas.candidates import MemoryCandidateResponse, ProfileCandidateResponse
 from app.schemas.character import CharacterResponse, CharacterSummaryResponse
 from app.schemas.imports import ImportItemResponse, ImportJobResponse
-from app.schemas.memory import MemoryResponse
 from app.schemas.personality import PersonalityProposalResponse, PersonalityResponse
 from app.schemas.preferences import GenerationPreferencesResponse
 from app.schemas.runtime import EventResponse, RunResponse
@@ -123,26 +121,6 @@ def proposal_to_response(proposal: PersonalityProposal) -> PersonalityProposalRe
     )
 
 
-def memory_to_response(memory: Memory) -> MemoryResponse:
-    return MemoryResponse(
-        id=memory.id,
-        character_id=memory.character_id,
-        type=memory.type,
-        title=memory.title,
-        content=memory.content,
-        source=memory.source,
-        confidence=memory.confidence,
-        importance=memory.importance,
-        sensitivity=memory.sensitivity,
-        evidence_ids=loads_list(memory.evidence_ids_json),
-        status=memory.status,
-        created_at=to_iso(memory.created_at) or "",
-        updated_at=to_iso(memory.updated_at) or "",
-        deleted_at=to_iso(memory.deleted_at),
-        expires_at=to_iso(memory.expires_at),
-    )
-
-
 def run_to_response(run: Run) -> RunResponse:
     return RunResponse(
         id=run.id,
@@ -401,21 +379,15 @@ def profile_candidate_to_response(candidate: ProfileCandidate) -> ProfileCandida
     )
 
 
-def memory_candidate_to_response(candidate: MemoryCandidate) -> MemoryCandidateResponse:
-    return MemoryCandidateResponse(
-        id=candidate.id,
-        character_id=candidate.character_id,
-        import_job_id=candidate.import_job_id,
-        cycle_id=candidate.cycle_id,
-        type=candidate.type,
-        title=candidate.title,
-        content=candidate.content,
-        confidence=candidate.confidence,
-        importance=candidate.importance,
-        sensitivity=candidate.sensitivity,
-        evidence_ids=loads_list(candidate.evidence_ids_json),
-        status=candidate.status,
-        reason=candidate.reason,
-        reviewed_at=to_iso(candidate.reviewed_at),
-        created_at=to_iso(candidate.created_at) or "",
-    )
+
+
+def memory_candidate_to_response(candidate):  # noqa: ANN001 — 旧导入候选（M6 退役）
+    from app.schemas.candidates import MemoryCandidateResponse
+
+    return MemoryCandidateResponse.model_validate(candidate, from_attributes=True)
+
+
+def profile_candidate_to_response(candidate):  # noqa: ANN001 — 旧导入候选（M6 退役）
+    from app.schemas.candidates import ProfileCandidateResponse
+
+    return ProfileCandidateResponse.model_validate(candidate, from_attributes=True)