A8多套打包+M4归档+R5多图:存量功能备份

A8 多套交付包(packaging_task.py):
- 修复交付包只打第1条混乱note的bug,按ImageCandidate.strategy分A/B/C组
- 每组生独立note_0N夹(6图+文案.txt),同seq留最新去重,老数据兼容
- task74端到端验:3套各6图,独立agent7项交叉验证全过

M4 归档(tasks.py/exports.py/前端):
- list_tasks加date_from/date_to/product_id筛选+product_name批量填(防N+1)
- 新增exports.py:产品JSON导出+标杆CSV导出(UTF-8 BOM)
- 前端HistoryFilters日期/产品筛选+产品列+打回原因红banner
- response.py加raise_param_error;独立agent验A1/A2/A9通过

R5 产品多图(product_images.py/020迁移/前端):
- product_images表+5端点(上传/列/改场景/设主图/删图)
- 生图按ROLE_SCENE_PREFERENCE选对应场景图,回落primary
- 前端ProductImageManager多图画廊

R6 账号config拆页(settings/):
- 配置页按角色拆/settings(运营+组长+admin)+/config(仅admin)
- Key只显末4位不显余额(守红线)

核销表对齐真实代码状态:D1改稿框/M7裂变/E12评图分纠偏为已完成(曾漏回写)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend/app/models/product.py

@@ -13,7 +13,7 @@ from sqlalchemy import (
 )
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 
-from app.constants.enums import BannedWordLevel, ProductSource
+from app.constants.enums import BannedWordLevel, ProductImageScene, ProductSource
 from app.core.database import Base
 
 
@@ -52,12 +52,45 @@ class Product(Base):
     benchmark_notes: Mapped[list["BenchmarkNote"]] = relationship(
         back_populates="product", lazy="noload"
     )
+    images: Mapped[list["ProductImage"]] = relationship(
+        back_populates="product", lazy="selectin",
+        cascade="all, delete-orphan", order_by="ProductImage.sort_order",
+    )
 
     __table_args__ = (
         Index("idx_products_workspace_id", "workspace_id"),
     )
 
 
+class ProductImage(Base):
+    """产品参考图（R5多图）：一产品多张，每张标 scene 场景类型，生图按分镜role选用。
+
+    product.image_path 仍保留当主图（向后兼容，零破坏）；本表是其超集。
+    """
+    __tablename__ = "product_images"
+
+    id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
+    product_id: Mapped[int] = mapped_column(
+        BigInteger, ForeignKey("products.id", ondelete="CASCADE"), nullable=False
+    )
+    path: Mapped[str] = mapped_column(String(512), nullable=False)  # 绝对路径，worker 直接 open
+    scene: Mapped[str] = mapped_column(
+        Enum(ProductImageScene, values_callable=lambda x: [e.value for e in x]),
+        default=ProductImageScene.PRIMARY, nullable=False,
+    )
+    is_primary: Mapped[bool] = mapped_column(default=False, nullable=False)  # 主图(同步 product.image_path)
+    sort_order: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime, server_default=func.now(), nullable=False
+    )
+
+    product: Mapped["Product"] = relationship(back_populates="images")
+
+    __table_args__ = (
+        Index("idx_product_images_product_id", "product_id"),
+    )
+
+
 class BenchmarkNote(Base):
     """标杆笔记（截图+手填亮点为主通道）"""
     __tablename__ = "benchmark_notes"