M2b：删除旧 chat 体系——线性会话/叩心/情绪/纪念日模型与页面退役（迁移 003 双向验证），runs 去会话外键，测试全量修剪

backend/app/api/v1/endpoints/runs.py

@@ -38,7 +38,6 @@ router = APIRouter(prefix="/runs", tags=["runs"])
 @router.get("", response_model=Page[RunResponse])
 async def list_runs(
     character_id: str | None = Query(default=None, description="按人物过滤。"),
-    session_id: str | None = Query(default=None, description="按会话过滤。"),
     status: str | None = Query(default=None, description="按状态过滤。"),
     page: int = Query(default=1, ge=1),
     page_size: int = Query(default=20, ge=1, le=100),
@@ -46,7 +45,6 @@ async def list_runs(
     """Run 列表（按创建时间倒序）；归档页运行时间河数据源。"""
     return await list_runs_response(
         character_id=character_id,
-        session_id=session_id,
         status=status,
         page=page,
         page_size=page_size,