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/api/v1/tasks.py

@@ -170,16 +170,45 @@ def create_task(
 def list_tasks(
     page: int = 1, page_size: int = 20,
     status: list[str] | None = Query(default=None),
+    date_from: str | None = Query(default=None, description="起始日(YYYY-MM-DD)"),
+    date_to: str | None = Query(default=None, description="结束日(YYYY-MM-DD,含当日)"),
+    product_id: int | None = Query(default=None),
     current_user: Annotated[CurrentUser, Depends(require_write_permission)] = None,
     db: Session = Depends(get_db),
 ):
+    from datetime import datetime, timedelta
+    from app.models.product import Product
     q = db.query(GenerationTask).filter(GenerationTask.workspace_id == current_user.workspace_id)
     if status:
         # 支持多状态(?status=approved&status=rejected)，单值也兼容
         q = q.filter(GenerationTask.status.in_(status))
+    if product_id is not None:
+        q = q.filter(GenerationTask.product_id == product_id)
+    # 日期筛选：date 形参非法 → 40001(不静默吞成全量,防运营误判)
+    try:
+        if date_from:
+            q = q.filter(GenerationTask.created_at >= datetime.fromisoformat(date_from))
+        if date_to:
+            # date_to 含当日：取次日 0 点为开区间上界，覆盖当日全部时刻
+            _end = datetime.fromisoformat(date_to) + timedelta(days=1)
+            q = q.filter(GenerationTask.created_at < _end)
+    except ValueError:
+        from app.core.response import raise_param_error
+        raise_param_error("date_from/date_to 需为 YYYY-MM-DD 格式")
     total = q.count()
     items = q.order_by(GenerationTask.created_at.desc()).offset((page - 1) * page_size).limit(page_size).all()
-    return ok(paginate([_fmt_task(t) for t in items], total, page, page_size))
+    # product_name 一次性批量查(防 N+1)：收集本页 product_id → id→name dict
+    pids = {t.product_id for t in items if t.product_id}
+    name_map: dict[int, str] = {}
+    if pids:
+        for p in db.query(Product.id, Product.name).filter(Product.id.in_(pids)).all():
+            name_map[p.id] = p.name
+    rows = []
+    for t in items:
+        d = _fmt_task(t)
+        d["product_name"] = name_map.get(t.product_id)
+        rows.append(d)
+    return ok(paginate(rows, total, page, page_size))
 
 
 @router.get("/{task_id}")