B6/B7: failed终态前端可见 + SSE事件链核实

B6 错误态:
- 后端已加 TaskStatus.FAILED + 异常区分重试中/耗尽(014迁移ALTER status ENUM)
- 前端 TaskStatus 类型加 failed
- RecentTasksBar/history STATUS_LABEL 补 failed 标签
- history 页 HISTORY_STATUSES 纳入 failed(否则失败任务前端找不到)
- FatalErrorBanner + useSse error 不再静默丢弃

B7: 核实 SSE(ticket换JWT) + 事件消费链无缺口,标绿

tsc EXIT=0

backend/alembic/versions/014_task_status_failed.py

@@ -0,0 +1,34 @@
+"""014 generation_tasks.status ENUM 补 failed 终态（B6 错误态）
+
+Revision ID: 014
+Revises: 013
+Create Date: 2026-06-16
+
+status 是 MySQL ENUM,原7值无失败终态。Celery生成彻底失败(重试耗尽)时
+要落 failed,区分"没跑(pending)"和"跑挂了(failed)"。不补 ENUM 会 Data truncated。
+"""
+from alembic import op
+
+revision = "014"
+down_revision = "013"
+branch_labels = None
+depends_on = None
+
+_ENUM_WITH_FAILED = (
+    "ENUM('pending','generating','pending_selection','pending_review',"
+    "'approved','rejected','archived','failed') NOT NULL DEFAULT 'pending'"
+)
+_ENUM_ORIG = (
+    "ENUM('pending','generating','pending_selection','pending_review',"
+    "'approved','rejected','archived') NOT NULL DEFAULT 'pending'"
+)
+
+
+def upgrade():
+    op.execute(f"ALTER TABLE generation_tasks MODIFY COLUMN status {_ENUM_WITH_FAILED}")
+
+
+def downgrade():
+    # 回退前先把 failed 行归位到 pending,避免越界
+    op.execute("UPDATE generation_tasks SET status='pending' WHERE status='failed'")
+    op.execute(f"ALTER TABLE generation_tasks MODIFY COLUMN status {_ENUM_ORIG}")

backend/app/constants/enums.py

@@ -23,6 +23,7 @@ class TaskStatus(str, Enum):
     APPROVED = "approved"
     REJECTED = "rejected"
     ARCHIVED = "archived"
+    FAILED = "failed"  # 生成彻底失败终态(重试耗尽):区分"没跑"和"跑挂了"(B6)
 
 
 # ── 审核状态（generation_tasks 平铺字段）──────────────────

backend/app/workers/tasks.py

@@ -140,16 +140,21 @@ def run_generation_pipeline(self, task_id: int) -> dict:
 
     except Exception as exc:
         logger.error("run_generation_pipeline failed: task_id=%s err=%s", task_id, exc)
+        # 重试耗尽才落 FAILED 终态;还能重试则保持 GENERATING(别伪装成"待开始")。
+        # B6:失败要可见,区分"没跑(pending)"和"跑挂了(failed)"。
+        exhausted = self.request.retries >= self.max_retries
         try:
             from app.models.task import GenerationTask as GT
             from app.constants.enums import TaskStatus as TS
             t = db.query(GT).filter(GT.id == task_id).first()
             if t:
-                t.status = TS.PENDING
+                t.status = TS.FAILED if exhausted else TS.GENERATING
                 db.commit()
         except Exception:
             pass
         _push_event_sync(task_id, workspace_id, "error", {"code": 50001, "message": str(exc)}, seq + 1)
+        if exhausted:
+            return {"task_id": task_id, "status": "failed", "error": str(exc)}
         raise self.retry(exc=exc)
     finally:
         db.close()

frontend/src/app/history/components.tsx

@@ -17,6 +17,7 @@ const STATUS_LABEL: Record<string, { text: string; color: string }> = {
   approved: { text: '已通过', color: 'text-green-600 bg-green-50' },
   archived: { text: '已归档', color: 'text-gray-500 bg-gray-100' },
   rejected: { text: '被打回', color: 'text-red-500 bg-red-50' },
+  failed: { text: '生成失败', color: 'text-red-600 bg-red-50' },
 };
 
 // --- DownloadButton --- 触发打包→轮询→下载 zip

frontend/src/app/history/page.tsx

@@ -11,9 +11,9 @@ import { getErrorAction } from '@/types/errors';
 import { clsx } from 'clsx';
 import { HistoryTable, HistorySkeleton, Pagination } from './components';
 
-const HISTORY_STATUSES = ['approved', 'archived', 'rejected'];
+const HISTORY_STATUSES = ['approved', 'archived', 'rejected', 'failed'];
 const STATUS_LABELS: Record<string, string> = {
-  approved: '已通过', archived: '已归档', rejected: '被打回',
+  approved: '已通过', archived: '已归档', rejected: '被打回', failed: '生成失败',
 };
 const PAGE_SIZE = 20;
 

frontend/src/app/tasks/[id]/images/page.tsx

@@ -7,6 +7,7 @@ import { ImageProgressCardSkeleton } from '@/components/tasks/ImageProgressCard'
 import { ImageProgressHeader } from '@/components/tasks/ImageProgressHeader';
 import { ImageActionBar } from '@/components/tasks/ImageActionBar';
 import { SseStatusBar } from '@/components/tasks/SseStatusBar';
+import { FatalErrorBanner } from '@/components/tasks/FatalErrorBanner';
 import { useSse } from '@/hooks/useSse';
 import { useGenerationStore } from '@/stores/generationStore';
 import { useTaskStore } from '@/stores/taskStore';
@@ -50,6 +51,7 @@ export default function ImageSelectionPage() {
       )}
       <SseStatusBar status={connectionStatus} attempt={reconnectAttempt} />
       <div className="p-6 flex-1 overflow-auto">
+        <FatalErrorBanner />
         <ImageProgressHeader imageTotal={imageTotal} imageDone={imageDone} pendingCount={pendingCount} />
         {/* 图片网格（谁好谁先冒） */}
         <div className="grid grid-cols-3 xl:grid-cols-5 gap-3">

frontend/src/app/tasks/[id]/text/page.tsx

@@ -6,6 +6,7 @@ import { ProgressBar } from '@/components/layout/ProgressBar';
 import { FlywheelBannerFromSse } from '@/components/FlywheelBanner';
 import { TextCandidateCard, TextCandidateCardSkeleton } from '@/components/tasks/TextCandidateCard';
 import { SseStatusBar } from '@/components/tasks/SseStatusBar';
+import { FatalErrorBanner } from '@/components/tasks/FatalErrorBanner';
 import { useSse } from '@/hooks/useSse';
 import { useGenerationStore } from '@/stores/generationStore';
 import { useTaskStore } from '@/stores/taskStore';
@@ -50,6 +51,9 @@ export default function TextSelectionPage() {
           <SseStatusBar status={connectionStatus} attempt={reconnectAttempt} />
         </div>
 
+        {/* 任务级失败提示(B6):生成彻底失败时明确反馈,不再无限转圈 */}
+        <FatalErrorBanner />
+
         {/* SSE 进度提示（生成中且无内容时） */}
         {showSkeleton && (
           <div className="mb-4 bg-brand-cream border border-brand-orange/20 rounded-xl px-4 py-3 text-sm text-text-secondary"

frontend/src/components/tasks/FatalErrorBanner.tsx

@@ -0,0 +1,30 @@
+'use client';
+// FatalErrorBanner — 任务级致命错误提示(B6)。生成彻底失败时给用户明确反馈,
+// 不再让页面无限转圈。从 generationStore.fatalError 读。
+import { useGenerationStore } from '@/stores/generationStore';
+
+export function FatalErrorBanner() {
+  const fatalError = useGenerationStore((s) => s.fatalError);
+  if (!fatalError) return null;
+
+  return (
+    <div
+      className="mb-4 bg-red-50 border border-status-error rounded-xl px-4 py-3"
+      role="alert"
+      aria-live="assertive"
+    >
+      <div className="flex items-start gap-2">
+        <span aria-hidden="true" className="text-status-error">⚠️</span>
+        <div className="flex-1 min-w-0">
+          <p className="text-sm font-medium text-status-error">生成失败</p>
+          <p className="text-xs text-text-secondary mt-0.5 break-words">
+            {fatalError.message || '生成过程出错，请重试或联系管理员'}
+          </p>
+          <p className="text-xs text-text-tertiary mt-1">
+            可在任务列表对该任务重新生成；多次失败请检查 key 配置或网络。
+          </p>
+        </div>
+      </div>
+    </div>
+  );
+}

frontend/src/components/tasks/RecentTasksBar.tsx

@@ -19,6 +19,7 @@ const STATUS_LABELS: Record<TaskStatus, { label: string; color: string }> = {
   approved: { label: '已通过', color: 'text-status-success' },
   rejected: { label: '已打回', color: 'text-status-error' },
   archived: { label: '已归档', color: 'text-text-tertiary' },
+  failed: { label: '生成失败', color: 'text-status-error' },
 };
 
 export function RecentTasksBar() {

frontend/src/hooks/useSse.ts

@@ -121,6 +121,10 @@ function handleEvent(
       break;
 
     case 'error':
+      // 任务级致命错误:不再静默丢弃,落 fatalError 让 UI 提示(B6)
+      store.setFatalError(event.data.code, event.data.message);
+      break;
+
     case 'heartbeat':
     case 'analyze_done':
     case 'task_done':

frontend/src/stores/generationStore.ts

@@ -28,6 +28,9 @@ interface GenerationState {
   imageCandidates: ImageCandidate[];
   failedBatches: FailedBatch[];
 
+  // 任务级致命错误(SSE error事件,生成彻底失败)。区别于图片批次级 failedBatches。
+  fatalError: { code: number; message: string } | null;
+
   // 飞轮注入（飞轮隐形，只显注入提示，无"训练AI"按钮）
   flywheelInjected: {
     recentPreference: string;
@@ -41,6 +44,7 @@ interface GenerationState {
   setImageProgress: (done: number, total: number) => void;
   addImageCandidate: (candidate: ImageCandidate) => void;
   markBatchFailed: (batch: string, reason: string, retryable: boolean) => void;
+  setFatalError: (code: number, message: string) => void;
   setFlywheelInjected: (data: { recentPreference: string; rejectReasons: string[] }) => void;
   hydrateFromTask: (data: {
     textCandidates: TextCandidate[];
@@ -59,6 +63,7 @@ export const useGenerationStore = create<GenerationState>((set) => ({
   imageTotal: 0,
   imageCandidates: [],
   failedBatches: [],
+  fatalError: null,
   flywheelInjected: null,
 
   setConnectionStatus(s, attempt = 0) {
@@ -95,6 +100,10 @@ export const useGenerationStore = create<GenerationState>((set) => ({
     }));
   },
 
+  setFatalError(code, message) {
+    set({ fatalError: { code, message } });
+  },
+
   setFlywheelInjected(data) {
     set({ flywheelInjected: data });
   },
@@ -116,7 +125,7 @@ export const useGenerationStore = create<GenerationState>((set) => ({
       connectionStatus: 'connecting', reconnectAttempt: 0,
       textDone: 0, textTotal: 0, textCandidates: [],
       imageDone: 0, imageTotal: 0, imageCandidates: [],
-      failedBatches: [], flywheelInjected: null,
+      failedBatches: [], fatalError: null, flywheelInjected: null,
     });
   },
 }));

frontend/src/types/dto.tasks.ts

@@ -3,7 +3,7 @@
 // 任务
 export type TaskStatus =
   | 'pending' | 'generating' | 'pending_selection'
-  | 'pending_review' | 'approved' | 'rejected' | 'archived';
+  | 'pending_review' | 'approved' | 'rejected' | 'archived' | 'failed';
 
 export interface TaskListItem {
   id: number;

plans/总核销表.md

@@ -43,11 +43,11 @@ KR1链路连通 + KR2质量达标 + KR3自主可验 + KR4引擎补全(第2环+
 ### 桶A 必须做（主链可用性，最先修）
 | ID | 任务 | 根据 | 状态 |
 |----|------|------|------|
-| A1 | Sidebar 4个死链路由(/tasks /images /tasks/build /tasks/list 全不存在) | Sidebar.tsx确证 | □ |
+| A1 | Sidebar 4个死链路由(/tasks /images /tasks/build /tasks/list 全不存在) | Sidebar.tsx确证 | ✅ 2026-06-16 删4死链+补回/review审核台(限supervisor+admin),tsc全量EXIT0,commit 77f52e7 |
-| D1 | 改稿进飞轮(SignalType.text_edit + TextCandidate.edited + 改稿端点走task_actions) | 最强真实信号 | □ |
+| D1 | 改稿进飞轮(SignalType.text_edit + TextCandidate.edited + 改稿端点走task_actions) | 最强真实信号 | ◐ 后端✅2026-06-16端到端真跑(edited False→True+飞轮信号落库weight=5,实测抓出ENUM未同步bug已修,commit e3fb6f2)。**前端改稿框入口攒批做(倩倩姐2026-06-16:后端先串完前端攒批)** |
-| C2 | 审核界面显分(读score_json总分,不读eval_score NULL列) | 审核可判断 | □ |
+| C2 | 审核界面显分(读score_json总分,不读eval_score NULL列) | 审核可判断 | ✅ 2026-06-16 review.py复用_score_array_to_obj算总分+7维,ReviewCard接ScoreDimBars(passLine=80红线),端到端验task40返回total=83,新旧维度兼容,commit ea423e8 |
-| B7 | 事件处理补齐(SSE/轮询状态流转) | 前端诊断 | □ |
+| B7 | 事件处理补齐(SSE/轮询状态流转) | 前端诊断 | ✅ 2026-06-16 核实已做无缺口:SSE签ticket换JWT(?ticket=合规红线)+useSse消费progress/done/error全链+轮询兜底,后端事件发布到位,标绿 |
-| B6 | 错误态呈现(status=failed前端可见) | 前端诊断 | □ |
+| B6 | 错误态呈现(status=failed前端可见) | 前端诊断 | ✅ 2026-06-16 后端加TaskStatus.FAILED终态+异常区分重试中vs耗尽(耗尽落failed不retry)+014迁移ALTER status ENUM;前端fatalError state+useSse error不再静默丢+FatalErrorBanner提示+failed标签(列表/历史页可见,history纳入HISTORY_STATUSES),tsc EXIT0 |
 
 ### 桶B 飞轮专项（产品最大亮点·做扎实+前端呈现）
 | ID | 任务 | 守的底线 | 状态 |
@@ -81,7 +81,7 @@ KR1链路连通 + KR2质量达标 + KR3自主可验 + KR4引擎补全(第2环+
 ---
 
 ## 🔴 跨模块迁移版本号统一（防三环撞008车）
-008=brand_keyword(第5环) / 009=features_json+analyze_status(第2环) / 010=fission_tasks表(第11环) / 011=benchmark_ids+source_fission_id(第2环S12+第11环合并)
+008=brand_keyword / 009=benchmark_analyze_fields(含features_json) / 010=fission_tasks表 / 011=task_benchmark_fission_fields / 012=product_target_audience / **013=text_candidate edited+signal_type ENUM补text_edit(D1已落)**。下一个可用=014。
 
 ## 总验收（最高门禁）