存量积累：生图素人感约束+评图分+幂等防重跑+审核回路

- 015-017迁移：image_candidate 文案复审/AI视觉分/重生标记
- constants C7素人感约束(反电商摆拍对齐真实笔记)+C3叠字口子
- celery visibility_timeout=2h 防长任务被误判重投重复烧钱(task75教训)
- image_scorer 评图分(只筛选+展示,真实信号才进飞轮权重)
- storyboard/image_gen/pipeline_io 生图存量
- task_actions/tasks/task_service/flywheel 审核回路+飞轮存量

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

backend/app/api/v1/task_actions.py

@@ -95,22 +95,38 @@ def import_text(
     return ok(_fmt_text(tc))
 
 
+class RegenerateRequest(BaseModel):
+    """R2 重生参数（全 None=整体重生，兼容旧调用）。
+    strategy='A'/'B'/'C' 指定单套；role 指定单张(需配 strategy)；custom_prompt 人工追加提示词。"""
+    strategy: str | None = Field(default=None, pattern="^[ABC]$")
+    role: str | None = None
+    custom_prompt: str | None = Field(default=None, max_length=500)
+
+
 @router.post("/{task_id}/regenerate")
 def regenerate(
     task_id: int,
+    body: RegenerateRequest | None = None,
     current_user: Annotated[CurrentUser, Depends(require_write_permission)] = None,
     db: Session = Depends(get_db),
 ):
-    """重新生成（飞轮信号 regenerate -1）。"""
+    """重新生成（飞轮信号 regenerate -1）。
+    body 全空=整体重生；带 strategy=单套重生；带 strategy+role=单张重生；custom_prompt=人工提示词。"""
     from app.services.flywheel_service import record_signal
     from app.services.task_service import enqueue_generation
     task = _check_task_ownership(
         db.query(GenerationTask).filter(GenerationTask.id == task_id).first(),
         current_user.workspace_id,
     )
+    body = body or RegenerateRequest()
+    # role 必须配 strategy（单张重生需知道是哪套的哪张）
+    if body.role and not body.strategy:
+        raise_state_invalid("指定单张重生(role)时必须同时指定 strategy(套别)")
     record_signal(db, current_user, task, "regenerate")
-    enqueue_generation(task.id)
-    return ok({"task_id": task_id, "status": "regenerating"})
+    enqueue_generation(task.id, regen_strategy=body.strategy,
+                       regen_role=body.role, custom_prompt=body.custom_prompt)
+    scope = "单张" if body.role else ("单套" if body.strategy else "整体")
+    return ok({"task_id": task_id, "status": "regenerating", "scope": scope})
 
 
 @router.post("/{task_id}/submit-review")

backend/app/api/v1/tasks.py

@@ -60,6 +60,10 @@ def _fmt_task(t: GenerationTask) -> dict:
         "id": t.id, "product_id": t.product_id, "theme": t.theme,
         "status": t.status, "text_count": t.text_count, "image_count": t.image_count,
         "track": t.track, "need_product_image": t.need_product_image,
+        # 审核回路：打回原因+审核状态,任务页/历史页展示"为何被打回"(R4-b死链修复,R8历史复用)
+        "review_status": t.review_status,
+        "reject_reason": t.reject_reason,
+        "reviewed_at": t.reviewed_at.isoformat() if t.reviewed_at else None,
         "created_at": t.created_at.isoformat(),
     }
 
@@ -129,6 +133,7 @@ def _fmt_text(tc: TextCandidate) -> dict:
         # AI 评委总评（verdict/summary 存在 content 列，新数据有，旧数据为空字符串降级）
         "verdict": parsed.get("verdict", ""),         # "优秀"|"合格"|"不合格"
         "summary": parsed.get("summary", ""),         # 一句话总评含改进点
+        "edited": tc.edited,                          # D1 改稿标记(飞轮最强信号)
     }
 
 
@@ -136,6 +141,9 @@ def _fmt_image(ic: ImageCandidate) -> dict:
     return {
         "candidate_id": ic.id, "role": ic.role, "url": ic.url,
         "strategy": ic.strategy, "seq": ic.seq, "is_selected": ic.is_selected,
+        "is_regen": getattr(ic, "is_regen", False),   # R2 重生标记(前端同strategy+role去重展示最新)
+        # E12 AI评图分：纯展示+排序,绝不进飞轮权重(eval_score 另留 NULL)
+        "ai_visual_score": ic.ai_visual_score, "ai_visual_note": ic.ai_visual_note,
     }