交易流水对账明细导出完成

video-gen-api/app/models/module_generation_step.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 from datetime import datetime
 from typing import Any
 
-from sqlalchemy import Boolean, DateTime, ForeignKey, Index, Integer, JSON, String, Text
+from sqlalchemy import Boolean, DateTime, Float, ForeignKey, Index, Integer, JSON, String, Text
 from sqlalchemy.dialects.postgresql import JSONB
 from sqlalchemy.orm import Mapped, mapped_column
 
@@ -72,3 +72,11 @@ class ModuleGenerationStep(Base, TimestampMixin, SoftDeleteMixin):
     error_message: Mapped[str | None] = mapped_column(Text, nullable=True)
     started_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
     completed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
+
+    # 提词优化成本快照，避免后台/详情页反复解析 output_json.usage。
+    token_usage_id: Mapped[str | None] = mapped_column(String(32), nullable=True, index=True)
+    model_config_id: Mapped[str | None] = mapped_column(String(32), nullable=True, index=True)
+    input_tokens: Mapped[int | None] = mapped_column(Integer, nullable=True)
+    output_tokens: Mapped[int | None] = mapped_column(Integer, nullable=True)
+    total_tokens: Mapped[int | None] = mapped_column(Integer, nullable=True)
+    text_credits_cost: Mapped[float | None] = mapped_column(Float, nullable=True)