feat(viral-video): #2169 接入即梦视觉API，真人参考图方舟50411自动切即梦兜底 (#2169)

Co-authored-by: xiaoxia <dev@xiaoxiajianji.com>
Co-committed-by: xiaoxia <dev@xiaoxiajianji.com>

.env.example

@@ -220,6 +220,20 @@ DOUBAO_MAX_RETRIES=2
 DOUBAO_VISION_MODEL=doubao-1-5-vision-pro-250328
 DOUBAO_VISION_LITE_MODEL=doubao-1-5-vision-lite-250315
 DOUBAO_VISION_USE_LITE=true
+# Embedding 向量化模型（原 large-text-240915 已下线，用多模态 embedding）
+DOUBAO_EMBEDDING_MODEL=doubao-embedding-vision-251215
+
+# ==================== 即梦（Jimeng）视觉 API —— 真人参考图兜底通道 (#2169) ====
+# 方舟 Seedance 走 B 端审核，真人参考图会被 50411 拦截；即梦走 C 端审核，普通真人照片可过审。
+# 需要在火山控制台开通即梦 cvtob 服务，使用 AK/SK（Region=cn-north-1, Service=cv）
+# 留空则真人拦截后直接返回错误提示，不会走即梦兜底。
+JIMENG_AK=
+JIMENG_SK=
+JIMENG_BASE_URL=https://visual.volcengineapi.com
+# 视频3.0 720P 首帧图生视频（1张图，稳定版；1080P标注下线中）
+JIMENG_REQ_KEY=jimeng_i2v_first_v30
+JIMENG_VIDEO_TIMEOUT=600
+JIMENG_VIDEO_POLL_INTERVAL=5
 
 # ==================== 积分/会员系统 (#1895) ====================
 # 积分系统总开关：默认 false（暂停积分系统）。

apps/api/app/api/routes/points.py

@@ -145,19 +145,22 @@ def get_rules(
 def get_packages(
     current_user: AuthenticatedUser = Depends(get_current_user),
 ):
-    """查询可购买的积分包列表。"""
-    packages = []
-    for code, pkg in POINTS_PACKAGES.items():
-        unit_price = f"¥{pkg['price_cents'] / 100 / pkg['points']:.3f}/积分"
-        packages.append(
-            PointsPackageItem(
-                code=code,
-                name=pkg["name"],
-                points=pkg["points"],
-                price_cents=pkg["price_cents"],
-                unit_price=unit_price,
-            )
+    """查询可购买的积分包列表（读管理后台 credit_packages 表真实数据）。
+
+    仅返回 is_active=true；后台改价/启停后最多 30 秒生效。
+    """
+    from packages.application.catalog.admin_catalog import get_points_packages
+
+    packages = [
+        PointsPackageItem(
+            code=row["code"],
+            name=row["name"],
+            points=row["points"],
+            price_cents=row["price_cents"],
+            unit_price=row["unit_price"],
         )
+        for row in get_points_packages()
+    ]
     mt = _member_type(current_user)
     discount = MEMBER_DISCOUNT.get(mt) if mt else None
     return PointsPackagesResponse(packages=packages, user_discount=discount)

apps/api/app/api/routes/subscription.py

@@ -86,33 +86,13 @@ async def get_current_subscription(
 def list_membership_plans(
     current_user: AuthenticatedUser = Depends(get_current_user),
 ) -> dict[str, list[dict[str, Any]]]:
-    """查询所有会员档位（供前端会员购买页展示）。
+    """查询可购买的会员套餐（读管理后台 plans 表真实数据）。
 
-    返回 points 积分体系下的会员档位（月卡/季卡/年卡），含价格、时长、积分折扣等信息。
+    仅返回 is_enabled=true 的套餐；后台启停/改价后最多 30 秒生效。
     """
-    from packages.domain.points_rules import MEMBER_DISCOUNT, MEMBERSHIP_PRICES
+    from packages.application.catalog.admin_catalog import get_membership_plans
 
-    plans: list[dict[str, Any]] = []
-    for plan_id, info in MEMBERSHIP_PRICES.items():
-        days = info["duration_days"]
-        monthly_cents = round(info["price_cents"] * 30 / days)
-        features: dict[str, Any] = {"max_resolution": "1080p"}
-        if plan_id == MembershipType.MONTHLY:
-            features.update({"free_clips_daily": 2})
-        elif plan_id == MembershipType.QUARTERLY:
-            features.update({"free_clips_daily": 5})
-        elif plan_id == MembershipType.YEARLY:
-            features.update({"free_clips_daily": "unlimited"})
-        plans.append({
-            "plan_id": plan_id,
-            "name": info["name"],
-            "price_cents": info["price_cents"],
-            "monthly_price_cents": monthly_cents,
-            "duration_days": days,
-            "points_discount": MEMBER_DISCOUNT.get(plan_id, 1.0),
-            "features": features,
-        })
-    return {"plans": plans}
+    return {"plans": get_membership_plans()}
 
 
 @router.get("/billing-records", response_model=list[BillingRecord])

apps/web/src/pages/ai-avatar/AiAvatarPage.tsx

@@ -80,6 +80,8 @@ const AiAvatarPage: React.FC = () => {
   const [finalizeLoading, setFinalizeLoading] = useState(false)
 
   /* ── 对口型轮询 ── */
+  /** 对口型轮询总时长上限（10分钟）：超过后停止轮询并提示去历史记录查看 */
+  const LIPSYNC_POLL_MAX_MS = 10 * 60 * 1000
   const lipsyncTimerRef = useRef<ReturnType<typeof setInterval> | null>(null)
   /* ── 渲染进度轮询 ── */
   const renderTimerRef = useRef<ReturnType<typeof setInterval> | null>(null)
@@ -270,7 +272,24 @@ const AiAvatarPage: React.FC = () => {
       // 如果是预合成模式，后端会同步把状态置为 submitted（甚至可能已返回 running），
       // 但仍需轮询等 completed
       if (lipsyncTimerRef.current) clearInterval(lipsyncTimerRef.current)
+      // 轮询间隔 5 秒；单请求超时 5 分钟（见 api/aiAvatar.ts）；总轮询上限 10 分钟
+      // 单次请求失败/超时不中断轮询，继续下一轮；超过总上限后停止并提示用户去历史记录查看
       lipsyncTimerRef.current = setInterval(async () => {
+        // 总时长保护：超过 10 分钟停止轮询
+        if (Date.now() - lipsyncStartAtRef.current > LIPSYNC_POLL_MAX_MS) {
+          if (lipsyncTimerRef.current) {
+            clearInterval(lipsyncTimerRef.current)
+            lipsyncTimerRef.current = null
+          }
+          if (lipsyncTickRef.current) {
+            clearInterval(lipsyncTickRef.current)
+            lipsyncTickRef.current = null
+          }
+          setLipsyncStatus("failed")
+          setLipsyncErrorMessage("渲染时间较长，请稍后在历史记录中查看")
+          message.warning("对口型渲染时间较长，已停止自动刷新，请稍后在历史记录中查看")
+          return
+        }
         try {
           const updated = await getLipsyncJob(job.id)
           state.setLipsyncJob(updated)
@@ -296,9 +315,10 @@ const AiAvatarPage: React.FC = () => {
             setLipsyncErrorMessage(updated.error_message || "对口型生成失败")
           }
         } catch (err) {
-          console.error("[对口型] 轮询错误:", err)
+          // 单次轮询失败（含 timeout）：不中断轮询，打印日志后等下一轮
+          console.warn("[对口型] 轮询请求失败，将继续下一轮:", err)
         }
-      }, 3000)
+      }, 5000)
     } catch (err) {
       console.error("[对口型] 创建失败:", {
         status: (err as { response?: { status?: number } })?.response?.status,

apps/web/src/pages/ai-avatar/api/aiAvatar.ts

@@ -72,7 +72,8 @@ export const previewTts = async (data: {
 }
 
 export const getLipsyncJob = async (id: string): Promise<LipsyncJob> => {
-  const response = await apiClient.get<LipsyncJob>(`/lipsync/jobs/${id}`, { timeout: 60000 })
+  // MuseTalk 渲染 8s 视频约 54s + 排队时间，给足 5 分钟超时避免单次轮询 AxiosError 中断
+  const response = await apiClient.get<LipsyncJob>(`/lipsync/jobs/${id}`, { timeout: 300_000 })
   return response.data
 }
 
@@ -91,7 +92,10 @@ export const submitRender = async (data: {
 }
 
 export const getRenderJob = async (jobId: string): Promise<RenderJob> => {
-  const response = await apiClient.get<RenderJob>(`/ai-avatar/render/${jobId}`, { timeout: 60000 })
+  // 渲染链路（对口型+B-roll+标题+合成+上传）耗时较长，给足 5 分钟超时
+  const response = await apiClient.get<RenderJob>(`/ai-avatar/render/${jobId}`, {
+    timeout: 300_000,
+  })
   return response.data
 }
 

apps/worker/worker_app/tasks/viral_video.py

@@ -647,7 +647,7 @@ def _build_products_summary(image_analysis: dict) -> str:
         # 优先 VLM 生成的 summary 段（自然语言，给编导模型看效果最好）
         summary = (p.get("summary") or "").strip()
         if summary and len(summary) >= 30:
-            lines.append(f"- 图{i+1} {name}：{summary}")
+            lines.append(f"- 图{i + 1} {name}：{summary}")
             continue
         # 结构化字段兜底
         brand = p.get("brand") or ""
@@ -669,7 +669,7 @@ def _build_products_summary(image_analysis: dict) -> str:
         feats = p.get("key_features") or p.get("features") or []
         sellings = p.get("selling_points") or []
         scenes = p.get("suitable_scenes") or []
-        parts = [f"图{i+1} {name}"]
+        parts = [f"图{i + 1} {name}"]
         if brand and brand not in ("未知", "无法判断"):
             parts.append(f"品牌={brand}")
         if cat and cat not in ("无法判断", "非产品图"):
@@ -802,7 +802,7 @@ def _validate_and_normalize_script(raw, job: ViralVideoJob) -> dict:
                 continue
             shots.append(
                 {
-                    "time_range": str(s.get("time_range") or f"{i*3}-{(i+1)*3}秒"),
+                    "time_range": str(s.get("time_range") or f"{i * 3}-{(i + 1) * 3}秒"),
                     "shot_type_angle_movement": str(s.get("shot_type_angle_movement") or "中景平视，固定镜头"),
                     "scene_and_dialogue": str(s.get("scene_and_dialogue") or ""),
                     "action_details": str(s.get("action_details") or ""),
@@ -878,8 +878,8 @@ def _step_script_generation(job: ViralVideoJob, intent: dict, image_analysis: di
     style_hint = "无"
     if isinstance(job.style_guide, dict):
         style_hint = (
-            f"节奏{job.style_guide.get('cut_speed','')}、转场{job.style_guide.get('transition','')}、"
-            f"色调{job.style_guide.get('color_grade','')}、能量{job.style_guide.get('energy','')}"
+            f"节奏{job.style_guide.get('cut_speed', '')}、转场{job.style_guide.get('transition', '')}、"
+            f"色调{job.style_guide.get('color_grade', '')}、能量{job.style_guide.get('energy', '')}"
         )
 
     dur = max(5, min(30, int(getattr(job, "duration", 15) or 15)))
@@ -1103,14 +1103,14 @@ def _assemble_seedance_prompt(copy_result: dict, job: ViralVideoJob) -> str:
         ab = s.get("audio_bgm", "")
         t = s.get("transition", "")
         ref = s.get("reference_image_index")
-        lines.append(f"- 镜头{i+1}（{tr}）：")
+        lines.append(f"- 镜头{i + 1}（{tr}）：")
         lines.append(f"  景别/运镜：{cam}")
         lines.append(f"  画面与对白：{sd}")
         lines.append(f"  动作细节：{act}")
         lines.append(f"  音效/BGM：{ab}")
         lines.append(f"  转场：{t}")
         if ref is not None and isinstance(ref, int):
-            lines.append(f"  参考图片：第{ref+1}张产品图")
+            lines.append(f"  参考图片：第{ref + 1}张产品图")
     lines.append("")
     lines.append("【硬性约束】")
     for c in hc:
@@ -1162,6 +1162,7 @@ def _step_render(job: ViralVideoJob, copy_result: dict, tts_audio_url: str | Non
     )
     logger.info("[爆款视频] Seedance prompt (前300字): %s", prompt[:300])
 
+    # 第一次调用：带参考图/首帧/音频/参考视频
     result = call_video_generation(
         prompt=prompt,
         image_url=first_image,
@@ -1175,15 +1176,52 @@ def _step_render(job: ViralVideoJob, copy_result: dict, tts_audio_url: str | Non
         reference_audios=ref_audios,
         reference_videos=ref_videos,
     )
+
+    # #2169: 真人/肖像拦截已由 ai_client 内部自动切即梦（jimeng-3.0）通道重试——
+    # 保留首帧图、不走"去掉参考图纯 t2v 降级"（用户明确要求按参考照片生成）。
+    # 即梦也失败或非拦截类错误时，直接抛错给上层展示用户友好提示。
+    def _check_and_reraise(result):
+        if result and isinstance(result, dict):
+            return result
+        from packages.shared.ai_service import get_last_video_error
+
+        err = get_last_video_error() or {}
+        user_msg = err.get("user_message") or ""
+        detail = err.get("detail") or ""
+        err_code = err.get("error_code") or "unknown"
+        status_code = err.get("status_code", 0)
+        err_provider = err.get("provider") or _mcfg.get("provider", "doubao")
+        err_msg = user_msg or f"视频生成失败（{err_provider} status={status_code} code={err_code}）"
+        logger.error(
+            "[爆款视频] 视频生成失败: provider=%s model=%s code=%s status=%s user_msg=%s detail=%s",
+            err_provider,
+            model or "default",
+            err_code,
+            status_code,
+            user_msg,
+            (detail or "")[:500],
+        )
+        raise RuntimeError(err_msg)
+
     if not result or not isinstance(result, dict):
-        raise RuntimeError("Seedance 视频生成失败：返回为空")
+        _check_and_reraise(result)
     video_path = result.get("video_path") or ""
     usage = result.get("usage")
     if not video_path or not Path(video_path).exists() or Path(video_path).stat().st_size == 0:
-        raise RuntimeError("Seedance 视频生成失败：返回空文件或路径不存在")
-    logger.info(
-        "[爆款视频] Seedance 单次生成完成: %s size=%d usage=%s", video_path, Path(video_path).stat().st_size, usage
-    )
+        raise RuntimeError("视频生成失败：返回空文件或路径不存在")
+    # #2169: 如果实际走了即梦兜底（真人拦截→jimeng），更新 job.video_model 让积分结算用 jimeng-3.0 价格
+    if isinstance(usage, dict):
+        actual_provider = usage.get("provider")
+        actual_model_key = usage.get("model_key")
+        if actual_provider == "jimeng" and actual_model_key:
+            logger.info(
+                "[爆款视频] 实际通过即梦通道生成(原model=%s)，更新video_model=%s 用于积分结算",
+                job.video_model,
+                actual_model_key,
+            )
+            job.video_model = actual_model_key
+    size = Path(video_path).stat().st_size
+    logger.info("[爆款视频] 单次生成完成: path=%s size=%d usage=%s", video_path, size, usage)
     return str(video_path), (usage if isinstance(usage, dict) else None)
 
 

packages/application/catalog/__init__.py

@@ -0,0 +1 @@
+"""应用层：对外展示目录（套餐/积分包）。"""

packages/application/catalog/admin_catalog.py

@@ -0,0 +1,152 @@
+"""读取管理后台配置的会员套餐 / 积分充值包（共享库真实数据）。
+
+替代旧的硬编码 MEMBERSHIP_PRICES / POINTS_PACKAGES。
+短 TTL 缓存（30 秒），后台改价/启停后用户端最多 30 秒可见。
+"""
+
+from __future__ import annotations
+
+import threading
+import time
+from typing import Any
+
+_CACHE_TTL = 30.0
+_lock = threading.Lock()
+_cache: dict[str, tuple[float, Any]] = {}
+
+_QUOTA_LABELS = {
+    "4k": "4K 超清分辨率",
+    "batch_render": "批量渲染",
+    "priority_queue": "优先处理队列",
+    "ai_matting": "AI 智能抠像",
+    "remove_watermark": "去水印",
+}
+
+
+def _cached(key: str, loader):
+    now = time.time()
+    hit = _cache.get(key)
+    if hit and now - hit[0] < _CACHE_TTL:
+        return hit[1]
+    with _lock:
+        hit = _cache.get(key)
+        if hit and time.time() - hit[0] < _CACHE_TTL:
+            return hit[1]
+        value = loader()
+        _cache[key] = (time.time(), value)
+        return value
+
+
+def _quota_features(quotas: dict[str, Any] | None) -> dict[str, Any]:
+    quotas = quotas or {}
+    features: dict[str, Any] = {}
+    for k, v in quotas.items():
+        if k == "credits_per_month":
+            features["credits_per_month"] = v
+        elif k in _QUOTA_LABELS:
+            features[_QUOTA_LABELS[k]] = v
+        else:
+            features[k] = v
+    return features
+
+
+def get_membership_plans() -> list[dict[str, Any]]:
+    """读取 is_enabled=true 的套餐，按年/月周期展开为用户端档位。"""
+
+    def _load() -> list[dict[str, Any]]:
+        from sqlalchemy import text
+
+        from packages.adapters.sqlalchemy_impl.session import SessionLocal
+
+        if SessionLocal is None:
+            return []
+
+        session = SessionLocal()
+        try:
+            rows = session.execute(text("""
+                    SELECT plan_key, name, description, monthly_price, yearly_price,
+                           quotas, display_order
+                    FROM plans
+                    WHERE is_enabled = TRUE
+                    ORDER BY display_order NULLS LAST, created_at
+                    """)).fetchall()
+        finally:
+            session.close()
+
+        plans: list[dict[str, Any]] = []
+        for r in rows:
+            base_features = _quota_features(r.quotas if isinstance(r.quotas, dict) else None)
+            if r.yearly_price and float(r.yearly_price) > 0:
+                plans.append(
+                    {
+                        "plan_id": r.plan_key,
+                        "billing_cycle": "yearly",
+                        "name": r.name,
+                        "description": r.description,
+                        "price_cents": int(round(float(r.yearly_price) * 100)),
+                        "monthly_price_cents": int(round(float(r.yearly_price) * 100 / 12)),
+                        "duration_days": 365,
+                        "features": dict(base_features),
+                    }
+                )
+            if r.monthly_price and float(r.monthly_price) > 0:
+                plans.append(
+                    {
+                        "plan_id": r.plan_key,
+                        "billing_cycle": "monthly",
+                        "name": r.name,
+                        "description": r.description,
+                        "price_cents": int(round(float(r.monthly_price) * 100)),
+                        "monthly_price_cents": int(round(float(r.monthly_price) * 100)),
+                        "duration_days": 30,
+                        "features": dict(base_features),
+                    }
+                )
+        return plans
+
+    return _cached("membership_plans", _load)
+
+
+def get_points_packages() -> list[dict[str, Any]]:
+    """读取 is_active=true 的积分充值包。"""
+
+    def _load() -> list[dict[str, Any]]:
+        from sqlalchemy import text
+
+        from packages.adapters.sqlalchemy_impl.session import SessionLocal
+
+        if SessionLocal is None:
+            return []
+
+        session = SessionLocal()
+        try:
+            rows = session.execute(text("""
+                    SELECT package_key, name, price, credits, bonus_credits,
+                           is_recommended, description, sort_order
+                    FROM credit_packages
+                    WHERE is_active = TRUE
+                    ORDER BY sort_order NULLS LAST, price
+                    """)).fetchall()
+        finally:
+            session.close()
+
+        packages: list[dict[str, Any]] = []
+        for r in rows:
+            total_points = int(r.credits or 0) + int(r.bonus_credits or 0)
+            price_cents = int(round(float(r.price) * 100))
+            unit = (price_cents / 100 / total_points) if total_points else 0
+            packages.append(
+                {
+                    "code": r.package_key,
+                    "name": r.name,
+                    "points": total_points,
+                    "bonus_credits": int(r.bonus_credits or 0),
+                    "price_cents": price_cents,
+                    "unit_price": f"¥{unit:.3f}/积分",
+                    "is_recommended": bool(r.is_recommended),
+                    "description": r.description,
+                }
+            )
+        return packages
+
+    return _cached("points_packages", _load)

packages/config/base.py

@@ -90,15 +90,21 @@ class SharedSettings(BaseSettings):
 
     # ── 豆包大模型（火山引擎方舟） ────────────────────────────────────────
     doubao_api_key: str = ""
-    doubao_model: str = "doubao-seed-1-6-250615"  # 推理模型（通用兜底）
-    doubao_fast_model: str = "doubao-1-5-pro-32k-250115"  # 快速结构化输出模型（编导脚本/意图解析/审核）
+    doubao_model: str = "doubao-seed-2-1-pro-260915"  # 推理模型（Seed 2.1 Pro，深度思考+多模态；原 seed-1-6 已下线）
+    doubao_fast_model: str = (
+        "doubao-seed-2-1-lite-260915"  # 快速模型（Seed 2.1 Lite，高 RPM，编导/审核/VLM lite；原 1-5-pro-32k 已 Retiring）
+    )
     doubao_base_url: str = "https://ark.cn-beijing.volces.com/api/v3"
     doubao_timeout: int = 30
     doubao_max_retries: int = 2
-    doubao_vision_model: str = "doubao-1-5-vision-pro-250328"  # 高精度视觉（备用）
-    doubao_vision_lite_model: str = "doubao-1-5-vision-lite-250315"  # 快速视觉（商品识别默认，速度优先）
+    doubao_vision_model: str = (
+        "doubao-seed-2-1-pro-260915"  # 高精度视觉（Seed 2.1 Pro 原生多模态；原 vision-pro-250328 已下线）
+    )
+    doubao_vision_lite_model: str = (
+        "doubao-seed-2-1-lite-260915"  # 快速视觉（Seed 2.1 Lite 原生多模态；原 vision-lite-250315 不可用）
+    )
     doubao_vision_use_lite: bool = True  # viral-video 图片分析默认用 lite 提速
-    doubao_embedding_model: str = "doubao-embedding-large-text-240915"
+    doubao_embedding_model: str = "doubao-embedding-vision-251215"  # 多模态向量化（原 large-text-240915 已 Retiring）
     doubao_video_model: str = "doubao-seedance-2-5-260628"
     doubao_video_timeout: int = 600  # 视频生成轮询总超时（秒）
     doubao_video_poll_interval: int = 10  # 轮询间隔（秒）
@@ -109,6 +115,17 @@ class SharedSettings(BaseSettings):
     dashscope_video_timeout: int = 900  # Wan 视频任务轮询总超时（秒）
     dashscope_video_poll_interval: int = 10
 
+    # ── 即梦（Jimeng）视觉 API —— 火山引擎 cvtob ──────────────────────────
+    # #2169: 真人参考图在方舟 Seedance 走 B 端审核会被 50411 拦截，
+    # 即梦走 C 端审核链路，普通真人照片可过审，作为参考图场景兜底通道。
+    # 鉴权：AK/SK V4 签名（Region=cn-north-1, Service=cv）
+    jimeng_ak: str = ""
+    jimeng_sk: str = ""
+    jimeng_base_url: str = "https://visual.volcengineapi.com"
+    jimeng_req_key: str = "jimeng_i2v_first_v30"  # 视频3.0 720P 首帧图生视频（1张图，稳定版；1080P 标注下线中）
+    jimeng_video_timeout: int = 600  # 即梦轮询总超时（秒）
+    jimeng_video_poll_interval: int = 5  # 轮询间隔（秒）
+
     # ── MediaKit (火山引擎 AI 媒体工具) ──────────────────────────────────
     mediakit_api_key: str = ""
     mediakit_base_url: str = "https://mediakit.cn-beijing.volces.com/api/v1"

packages/domain/points_rules.py

@@ -31,6 +31,8 @@ VIRAL_VIDEO_MODEL_PRICES: dict[tuple[str, str, bool], float] = {
     ("wan-3.0", "480p", False): 0.3,
     ("wan-3.0", "720p", False): 0.6,
     ("wan-3.0", "1080p", False): 1.2,
+    # #2169: 即梦（Jimeng）视频3.0 720P 首帧图生视频，0.28 元/秒（C 端审核，真人可过）
+    ("jimeng-3.0", "720p", False): 0.28,
 }
 
 # 固定成本（元）：VLM 分析 + LLM 文案 + TTS + OSS + 服务器
@@ -151,6 +153,20 @@ VIRAL_VIDEO_MODEL_CONFIG: dict[str, dict] = {
         "billing_mode": "per_second",
         "is_default": False,
     },
+    # #2169: 即梦视频3.0（内部兜底通道，方舟 Seedance 返回真人拦截 50411 时自动切到即梦重试，
+    # 不暴露给前端让用户直接选择，但需支持计费结算）
+    "jimeng-3.0": {
+        "key": "jimeng-3.0",
+        "display_name": "即梦3.0 — 真人图生视频（兜底）",
+        "model_id": "jimeng_i2v_first_v30",
+        "provider": "jimeng",
+        "supports_audio": False,  # 即梦返回无声视频，音频由后续 ffmpeg 合成 TTS
+        "supported_resolutions": ["720p"],
+        "max_duration": 10,  # 即梦 i2v 首帧最长 10s（frames=241）
+        "billing_mode": "per_second",
+        "is_default": False,
+        "_internal_fallback_only": True,  # 标记：不对外暴露到模型选择列表
+    },
 }
 
 
@@ -173,6 +189,9 @@ def list_viral_video_models(
             continue
         if cfg.get("provider") == "dashscope" and not dashscope_available:
             continue
+        # #2169: 即梦是内部兜底通道，不在前端模型列表展示
+        if cfg.get("_internal_fallback_only"):
+            continue
         out.append(
             {
                 "key": cfg["key"],

packages/shared/ai_client.py

@@ -22,23 +22,34 @@ import httpx
 
 from packages.shared.config import get_shared_settings
 
+# 网络/超时类异常父类集合：覆盖 Timeout/Connect/Network/ReadTimeout/WriteTimeout/PoolTimeout
+_HTTP_NETWORK_ERRORS = ()
+try:
+    _HTTP_NETWORK_ERRORS = (httpx.TimeoutException, httpx.NetworkError)
+except Exception:
+    _HTTP_NETWORK_ERRORS = (Exception,)
+
+_HTTP_STATUS_ERROR = httpx.HTTPStatusError if hasattr(httpx, "HTTPStatusError") else Exception
+
 logger = logging.getLogger(__name__)
 
 
-# 视频模型 ID 解析逻辑（#2159 多模型支持）。
-# 内部使用简短别名（seedance-2.5 / seedance-2.0 / wan-3.0 等）做 PRICING key 和前端选择值；
+# 视频模型 ID 解析逻辑（#2159 多模型支持，#2169 接入即梦）。
+# 内部使用简短别名（seedance-2.5 / seedance-2.0 / wan-3.0 / jimeng-3.0 等）做 PRICING key；
 # 实际调用时按 VIRAL_VIDEO_MODEL_CONFIG（domain/points_rules.py）的 provider/model_id 分发。
-# - provider=doubao → 火山方舟
+# - provider=doubao → 火山方舟 Seedance
 # - provider=dashscope → 阿里云 DashScope（Wan 系列）
+# - provider=jimeng → 火山引擎即梦 cvtob（jimeng_i2v_first_v30，真人参考图走 C 端审核）
 
 
 def _resolve_video_provider_and_id(model: str | None) -> tuple[str, str, dict]:
     """把内部 model key 解析成 (provider, model_id, cfg)。
 
-    - provider: "doubao" | "dashscope"
+    - provider: "doubao" | "dashscope" | "jimeng"
     - model_id: 对应 API 的真实模型 ID
     - cfg: VIRAL_VIDEO_MODEL_CONFIG 条目
-    未识别或空值回落到默认 seedance-2.5。已经是 doubao-/ep- 开头的完整 ID 视为 doubao provider。
+    未识别或空值回落到默认 seedance-2.5。已经是 doubao-/ep- 开头的完整 ID 视为 doubao provider；
+    "jimeng" 开头视为 jimeng provider（内部兜底，不暴露给前端）。
     """
     from packages.domain.points_rules import get_viral_video_model_config
 
@@ -51,6 +62,10 @@ def _resolve_video_provider_and_id(model: str | None) -> tuple[str, str, dict]:
     # 已经是 doubao-/ep- 开头：直接透传，默认视为 doubao provider
     if m.startswith("doubao-") or m.startswith("ep-"):
         return "doubao", m, {"provider": "doubao", "model_id": m, "supports_audio": True}
+    # 显式 jimeng 关键字：路由到即梦（内部兜底通道使用）
+    if m.startswith("jimeng"):
+        cfg = get_viral_video_model_config("jimeng-3.0")
+        return "jimeng", cfg.get("model_id", "jimeng_i2v_first_v30"), cfg
     # 别名 → 从 domain config 查
     cfg = get_viral_video_model_config(m)
     provider = cfg.get("provider", "doubao")
@@ -67,6 +82,93 @@ def _resolve_video_model_id(model: str | None) -> str:
     return mid
 
 
+# ── 视频错误分类（给前端/用户展示友好提示）────────────────────────────
+
+
+def _classify_video_error(status_code: int, body: str, err: Exception | None) -> tuple[str, str]:
+    """根据 HTTP 状态码和响应 body 判断错误类型。
+
+    返回 (error_code, user_message)：
+    - error_code: 机器可读的错误码（"portrait_intercept" / "quota_exceeded" / "model_not_found"
+      / "invalid_param" / "auth_error" / "rate_limit" / "network_error" / "task_failed" / "unknown"）
+    - user_message: 给用户看的中文提示
+    """
+    body_lower = (body or "").lower()
+    code_in_body = ""
+    msg_in_body = ""
+    try:
+        import json as _json
+
+        parsed = _json.loads(body or "{}")
+        if isinstance(parsed, dict):
+            err_obj = parsed.get("error") or {}
+            if isinstance(err_obj, dict):
+                code_in_body = str(err_obj.get("code", "") or "")
+                msg_in_body = str(err_obj.get("message", "") or err_obj.get("msg", "") or "")
+            else:
+                msg_in_body = str(parsed.get("message", "") or "")
+    except Exception:
+        pass
+
+    # 真人肖像/内容安全拦截
+    if (
+        status_code == 400
+        and any(
+            kw in body_lower
+            for kw in ("portrait", "real_face", "human_face", "真人", "肖像", "人脸", "privacy", "real person", "face")
+        )
+    ) or (
+        "content" in body_lower
+        and ("risk" in body_lower or "block" in body_lower or "reject" in body_lower)
+        and status_code == 400
+    ):
+        return (
+            "portrait_intercept",
+            "参考素材包含真人照片被安全策略拦截，AI视频模型暂不支持上传真人照片作为参考图，请移除真人图片后重试。",
+        )
+
+    # 配额/计费问题
+    if status_code in (402, 429) or any(
+        kw in body_lower for kw in ("quota", "billing", "insufficient", "欠费", "余额", "限流", "rate limit")
+    ):
+        if "rate" in body_lower or status_code == 429:
+            return "rate_limit", "视频生成服务当前繁忙（限流），请稍等1-2分钟后重试。"
+        return "quota_exceeded", "视频生成服务配额不足，请联系管理员充值或稍后重试。"
+
+    # 模型/Endpoint 不存在
+    if status_code == 404 or any(
+        kw in body_lower for kw in ("model not found", "endpoint not found", "不存在", "not found", "model_not_exist")
+    ):
+        return "model_not_found", f"视频模型未开通或模型ID无效（{code_in_body or ''}），请联系管理员。"
+
+    # 鉴权失败
+    if status_code in (401, 403):
+        return "auth_error", "视频生成服务鉴权失败（API Key无效或过期），请联系管理员。"
+
+    # 任务本身失败（轮询阶段拿到 status=failed）
+    if err and "task failed" in str(err).lower():
+        detail = msg_in_body or str(err)[:200]
+        # 失败原因里再细分真人拦截
+        if any(kw in detail.lower() for kw in ("portrait", "真人", "肖像", "人脸", "content_risk")):
+            return (
+                "portrait_intercept",
+                "视频内容被安全策略拦截（疑似包含真人肖像），请更换参考图或调整文案后重试。",
+            )
+        return "task_failed", f"视频生成失败：{detail}"
+
+    # 参数错误
+    if status_code == 400:
+        return "invalid_param", f"视频生成参数错误：{msg_in_body or body[:200]}"
+
+    # 网络/连接问题
+    if status_code == 0:
+        return "network_error", "视频生成服务连接失败（网络超时），请稍后重试。"
+
+    # 默认
+    detail = msg_in_body or (str(err) if err else "") or body[:200]
+    return "unknown", f"视频生成失败（HTTP {status_code}）：{detail}"
+
+
 class DoubaoClient:
     """豆包大模型 API 客户端.
 
@@ -84,6 +186,9 @@ class DoubaoClient:
         self.vision_model: str = settings.doubao_vision_model
         self.vision_lite_model: str = settings.doubao_vision_lite_model
         self.fast_model: str = settings.doubao_fast_model
+        self.embedding_model: str = settings.doubao_embedding_model
+        # 最近一次视频生成的详细错误（error_code + user_message + raw detail），供上层读取后展示给用户
+        self.last_video_error: dict = {}
 
     def embed_text(self, text: str, timeout: int | None = None) -> list[float] | None:
         """调用豆包文本 Embedding API，返回浮点向量；失败返回 None。"""
@@ -96,7 +201,7 @@ class DoubaoClient:
             "Content-Type": "application/json",
         }
         payload: dict[str, Any] = {
-            "model": getattr(self, "embedding_model", None) or "doubao-embedding-large-text-240915",
+            "model": self.embedding_model,
             "input": text.strip(),
             "encoding_format": "float",
         }
@@ -307,7 +412,8 @@ class DoubaoClient:
         """调用 Seedance 2.5 生视频（异步任务→轮询→下载）。
 
         成功返回 {"video_path": str, "usage": dict | None}，失败返回 None。
-        usage 是 Seedance 返回的计费信息（含 completion_tokens）。
+        失败时把详细错误信息（HTTP状态码、响应 body、分类后的用户提示）写入 self.last_video_error，
+        上层可通过 get_last_video_error() 读取并展示给用户，不再笼统显示"返回为空"。
 
         【v1.6.1 修复】严格按官方 content 数组协议构造请求：
         - 所有参考（图/音/视）必须放进 content 数组并带 role 字段，不能放顶层 reference_audios/reference_videos（非官方字段，会被忽略或导致异常）。
@@ -315,9 +421,24 @@ class DoubaoClient:
           判定：传了参考音频/视频或 ≥1 张多参考图时，走 omni_reference（首张图 role=reference_image）；纯首帧无参考时走 first_frame（ratio 强制 adaptive）。
         - 创建任务若因 ratio 报错（HTTP 400），自动回退到 ratio=adaptive 重试一次。
         """
+        # 每次调用前清空上次错误
+        self.last_video_error = {}
+
         if not self.is_available:
+            self.last_video_error = {
+                "error_code": "auth_error",
+                "user_message": "视频生成服务未配置（API Key 缺失），请联系管理员。",
+                "status_code": 0,
+                "detail": "DoubaoClient not available (api_key empty)",
+            }
             return None
         if not prompt or not prompt.strip():
+            self.last_video_error = {
+                "error_code": "invalid_param",
+                "user_message": "视频生成提示词不能为空。",
+                "status_code": 0,
+                "detail": "empty prompt",
+            }
             return None
 
         settings = get_shared_settings()
@@ -331,10 +452,20 @@ class DoubaoClient:
 
             ds = get_dashscope_client()
             if ds is None:
-                logger.error("DashScope client 不可用（未配置 DASHSCOPE_API_KEY），video_model=%s", model)
+                err_msg = "DashScope client 不可用（未配置 DASHSCOPE_API_KEY）"
+                logger.error("%s, video_model=%s", err_msg, model)
+                self.last_video_error = {
+                    "error_code": "auth_error",
+                    "user_message": "Wan 3.0 视频模型未配置 API Key，请联系管理员。",
+                    "status_code": 0,
+                    "detail": err_msg,
+                }
                 return None
             try:
-                return ds.video_generation(
+                # DashScope 客户端也设置 last_video_error 语义（如果它支持）
+                if hasattr(ds, "last_video_error"):
+                    ds.last_video_error = {}
+                result = ds.video_generation(
                     prompt=prompt,
                     image_url=image_url,
                     duration=duration,
@@ -343,10 +474,31 @@ class DoubaoClient:
                     output_dir=output_dir,
                     model=video_model,
                 )
+                if not result and hasattr(ds, "last_video_error") and ds.last_video_error:
+                    self.last_video_error = dict(ds.last_video_error)
+                return result
             except Exception as de:
                 logger.error("DashScope video_generation 异常: %s", de, exc_info=True)
+                self.last_video_error = {
+                    "error_code": "unknown",
+                    "user_message": f"Wan 3.0 视频生成异常：{de!s}"[:200],
+                    "status_code": 0,
+                    "detail": str(de),
+                }
                 return None
 
+        if provider == "jimeng":
+            # #2169: 即梦 cvtob（jimeng_i2v_first_v30）— 真人参考图兜底通道
+            return self._call_jimeng_video_generation(
+                prompt=prompt,
+                image_url=image_url,
+                duration=duration,
+                ratio=ratio,
+                resolution=resolution,
+                output_dir=output_dir,
+                generate_audio=generate_audio,
+            )
+
         ref_audios = [u for u in (reference_audios or [])[:10] if u and isinstance(u, str)]
         ref_videos = [u for u in (reference_videos or [])[:3] if u and isinstance(u, str)]
         ref_imgs = [u for u in (reference_images or [])[:9] if u and isinstance(u, str)]
@@ -370,7 +522,7 @@ class DoubaoClient:
                     }
                 )
             else:
-                # 纯首帧：不带 role，服务端识别为 first_frame（或显式 role=first_frame）
+                # 纯首帧：显式 role=first_frame
                 content.append(
                     {
                         "type": "image_url",
@@ -411,22 +563,38 @@ class DoubaoClient:
             len(ref_audios),
             len(ref_videos),
         )
+        # 打印完整 payload 便于排查（截断 prompt）
+        debug_payload = dict(create_payload)
+        if "content" in debug_payload:
+            dbg_content = []
+            for item in debug_payload["content"]:
+                item_copy = dict(item)
+                if item_copy.get("type") == "text" and isinstance(item_copy.get("text"), str):
+                    item_copy["text"] = item_copy["text"][:200] + ("..." if len(item_copy["text"]) > 200 else "")
+                dbg_content.append(item_copy)
+            debug_payload["content"] = dbg_content
+        logger.info("Seedance 创建任务 payload: %s", json_safe_dumps(debug_payload))
 
         def _do_create(payload: dict) -> tuple[str | None, Exception | None, int, str]:
             """返回 (task_id, last_err, status_code, body_text)。"""
             last_err: Exception | None = None
+            last_sc = 0
+            last_body = ""
             for attempt in range(self.max_retries + 1):
                 try:
                     resp = httpx.post(create_url, headers=headers, json=payload, timeout=self.timeout)
                     sc = int(getattr(resp, "status_code", 0) or 0)
-                    body = (getattr(resp, "text", "") or "")[:1500]
+                    body = (getattr(resp, "text", "") or "")[:2000]
+                    last_sc = sc
+                    last_body = body
                     if sc >= 400:
                         logger.error("Seedance 创建任务 HTTP %d: body=%s", sc, body)
                         try:
                             resp.raise_for_status()
                         except Exception as ee:
                             last_err = ee
-                            if attempt < self.max_retries:
+                            if attempt < self.max_retries and sc >= 500:
+                                # 仅 5xx 重试，4xx 不重试（参数/鉴权/配额错误重试无意义）
                                 time.sleep(0.5 * (2**attempt))
                                 continue
                             return None, last_err, sc, body
@@ -435,9 +603,19 @@ class DoubaoClient:
                     if tid:
                         return tid, None, sc, body
                     last_err = RuntimeError(f"create ok but no id: {str(data)[:300]}")
+                except _HTTP_NETWORK_ERRORS as ne:
+                    last_err = ne
+                    last_sc = 0
+                    last_body = f"network error: {ne}"
+                    logger.warning(
+                        "Seedance 创建网络异常（%s），重试 %d/%d", type(ne).__name__, attempt + 1, self.max_retries + 1
+                    )
+                    if attempt < self.max_retries:
+                        time.sleep(0.5 * (2**attempt))
+                        continue
                 except Exception as e:
                     last_err = e
-                    if attempt < self.max_retries:
+                    if attempt < self.max_retries and not isinstance(e, _HTTP_STATUS_ERROR):
                         wait = 0.5 * (2**attempt)
                         logger.warning(
                             "Seedance 创建任务失败，%.1fs 后重试 (%d/%d): %s",
@@ -447,7 +625,7 @@ class DoubaoClient:
                             e,
                         )
                         time.sleep(wait)
-            return None, last_err, 0, ""
+            return None, last_err, last_sc, last_body
 
         # 第一次尝试
         task_id, last_err, sc, body = _do_create(create_payload)
@@ -466,18 +644,53 @@ class DoubaoClient:
             logger.warning("Seedance 创建因 ratio 失败，回退 ratio=adaptive 重试")
             create_payload["ratio"] = "adaptive"
             task_id, last_err, sc2, body2 = _do_create(create_payload)
+            if task_id:
+                sc, body = sc2, body2
+            else:
+                # 保留第二次的错误信息
+                sc, body = sc2, body2
 
         if not task_id:
+            err_code, user_msg = _classify_video_error(sc, body, last_err)
+            self.last_video_error = {
+                "error_code": err_code,
+                "user_message": user_msg,
+                "status_code": sc,
+                "detail": (body or "")[:500] or (str(last_err) if last_err else ""),
+                "model": video_model,
+                "base_url": self.base_url,
+            }
             logger.error(
-                "Seedance 创建任务最终失败: model=%s base_url=%s err=%s body=%s  【排查】"
-                "1) 方舟控制台已开通 %s；2) API Key 有该模型权限；"
-                "3) DOUBAO_BASE_URL=https://ark.cn-beijing.volces.com/api/v3；4) 参考素材 URL 公网可访问。",
+                "Seedance 创建任务最终失败: model=%s base_url=%s status=%d code=%s err=%s body=%s",
                 video_model,
                 self.base_url,
+                sc,
+                err_code,
                 last_err,
                 (body or "")[:500],
-                video_model,
             )
+            # #2169: 方舟返回 portrait_intercept 且有参考图 → 自动切即梦重试一次（保留首帧图）
+            if err_code == "portrait_intercept" and image_url:
+                logger.warning(
+                    "[viral-video] Seedance 真人拦截(code=%s)，自动切即梦通道重试(首帧图) img=%s",
+                    err_code,
+                    bool(image_url),
+                )
+                jm_result = self._call_jimeng_video_generation(
+                    prompt=prompt,
+                    image_url=image_url,
+                    duration=duration,
+                    ratio=ratio,
+                    resolution=resolution,
+                    output_dir=output_dir,
+                    generate_audio=False,  # 即梦 i2v 不带音频，音频由后续 ffmpeg 合成
+                    _portrait_fallback=True,
+                )
+                if jm_result is not None:
+                    return jm_result
+                # 即梦也失败了，保留即梦的 last_video_error（已经由 _call_jimeng 设置）
+                logger.error("[viral-video] 即梦通道重试也失败: %s", self.last_video_error)
+                return None
             return None
 
         logger.info("Seedance 任务已创建: task_id=%s ratio=%s", task_id, create_payload["ratio"])
@@ -489,15 +702,21 @@ class DoubaoClient:
         usage: dict | None = None
         last_status: str = "queued"
         poll_count = 0
+        last_poll_body: str = ""
+        last_poll_sc: int = 0
         while time.time() < deadline:
             poll_count += 1
             try:
                 resp = httpx.get(poll_url, headers=headers, timeout=self.timeout)
-                try:
-                    if int(getattr(resp, "status_code", 200)) >= 400:
-                        resp.raise_for_status()
-                except (TypeError, ValueError):
-                    pass
+                last_poll_sc = int(getattr(resp, "status_code", 200) or 200)
+                last_poll_body = (getattr(resp, "text", "") or "")[:1500]
+                if last_poll_sc >= 400:
+                    logger.warning("Seedance 轮询 HTTP %d: %s", last_poll_sc, last_poll_body[:300])
+                    if poll_count < 3:
+                        time.sleep(poll_interval)
+                        continue
+                    last_err = RuntimeError(f"poll HTTP {last_poll_sc}: {last_poll_body[:200]}")
+                    break
                 data = resp.json()
                 status = data.get("status", "")
                 last_status = status
@@ -508,13 +727,22 @@ class DoubaoClient:
                     if video_url:
                         logger.info("Seedance 任务成功: task_id=%s polls=%d usage=%s", task_id, poll_count, usage)
                         break
-                    last_err = RuntimeError(f"task succeeded but no video_url: {str(data)[:300]}")
-                    logger.error("Seedance succeeded 但无 video_url: %s", last_err)
+                    # 成功但没 video_url：记录完整响应便于排查
+                    logger.error(
+                        "Seedance succeeded 但无 video_url: task_id=%s full_response=%s",
+                        task_id,
+                        str(data)[:1000],
+                    )
+                    last_err = RuntimeError("task succeeded but no video_url in response")
+                    last_poll_body = str(data)[:1000]
                     break
                 if status == "failed":
                     err = data.get("error") or {}
-                    last_err = RuntimeError(f"task failed: code={err.get('code','')} msg={err.get('message','')}")
-                    logger.error("Seedance 任务失败 task_id=%s: %s", task_id, last_err)
+                    err_code = str(err.get("code", "") or "")
+                    err_msg = str(err.get("message", "") or err.get("msg", "") or "")
+                    last_err = RuntimeError(f"task failed: code={err_code} msg={err_msg}")
+                    logger.error("Seedance 任务失败 task_id=%s code=%s msg=%s", task_id, err_code, err_msg)
+                    last_poll_body = str(data)[:1000]
                     break
                 if status in ("expired", "cancelled"):
                     last_err = RuntimeError(f"task {status}")
@@ -525,18 +753,39 @@ class DoubaoClient:
                     logger.info("Seedance 轮询中: task_id=%s status=%s polls=%d", task_id, status, poll_count)
             except httpx.HTTPStatusError as e:
                 last_err = e
-                logger.warning("Seedance 轮询 HTTP %d: %s", e.response.status_code, (e.response.text or "")[:300])
+                last_poll_sc = e.response.status_code
+                last_poll_body = (e.response.text or "")[:500]
+                logger.warning("Seedance 轮询 HTTP %d: %s", e.response.status_code, last_poll_body[:300])
             except Exception as e:
                 last_err = e
                 logger.debug("Seedance 轮询异常: %s", e)
             time.sleep(poll_interval)
 
         if not video_url:
+            # 区分轮询超时 vs 任务失败
+            if last_status in ("queued", "running", "pending") and poll_count > 0 and time.time() >= deadline:
+                err_code, user_msg = (
+                    "network_error",
+                    f"视频生成超时（>{total_timeout}s），任务仍在排队，请稍后重试或联系管理员。",
+                )
+                detail = f"timeout after {total_timeout}s, polls={poll_count}, last_status={last_status}"
+            else:
+                err_code, user_msg = _classify_video_error(last_poll_sc, last_poll_body, last_err)
+                detail = (last_poll_body or "")[:500] or (str(last_err) if last_err else f"last_status={last_status}")
+            self.last_video_error = {
+                "error_code": err_code,
+                "user_message": user_msg,
+                "status_code": last_poll_sc,
+                "detail": detail,
+                "task_id": task_id,
+                "last_status": last_status,
+            }
             logger.error(
-                "Seedance 任务未成功: task_id=%s last_status=%s polls=%d err=%s (总等待 %.0fs)",
+                "Seedance 任务未成功: task_id=%s last_status=%s polls=%d code=%s err=%s (总等待 %.0fs)",
                 task_id,
                 last_status,
                 poll_count,
+                err_code,
                 last_err,
                 total_timeout,
             )
@@ -567,12 +816,135 @@ class DoubaoClient:
                     os.remove(local_path)
                 except Exception:
                     pass
+                self.last_video_error = {
+                    "error_code": "unknown",
+                    "user_message": "视频生成成功但下载文件为空，请稍后重试。",
+                    "status_code": 0,
+                    "detail": f"downloaded 0 bytes from {video_url[:120]}",
+                }
                 return None
             return {"video_path": local_path, "usage": usage}
         except Exception as e:
             logger.error("Seedance 视频下载失败: %s", e, exc_info=True)
+            self.last_video_error = {
+                "error_code": "network_error",
+                "user_message": f"视频下载失败：{e!s}"[:200],
+                "status_code": 0,
+                "detail": str(e),
+            }
             return None
 
+    def _call_jimeng_video_generation(
+        self,
+        *,
+        prompt: str,
+        image_url: str | None,
+        duration: int,
+        ratio: str | None,
+        resolution: str,
+        output_dir: str | None,
+        generate_audio: bool = False,
+        _portrait_fallback: bool = False,
+    ) -> dict | None:
+        """#2169: 调用即梦 cvtob 客户端做图生视频（真人参考图兜底通道）。
+
+        - 即梦 i2v 首帧接口只接受 1 张图、无原生音频（返回无声视频，音频由 ffmpeg 后合）。
+        - 成功返回 {"video_path": str, "usage": {...}}；失败写 self.last_video_error 并返回 None。
+        - _portrait_fallback=True 时在日志里标注是从方舟拦截切过来的。
+        """
+        from packages.shared.jimeng_client import get_jimeng_client
+
+        jm = get_jimeng_client()
+        if jm is None:
+            detail = "即梦 client 不可用（JIMENG_AK/SK 未配置）"
+            if _portrait_fallback:
+                # 从真人拦截切过来但即梦没配，仍把错误归到 portrait_intercept，让上层提示用户
+                self.last_video_error = {
+                    "error_code": "portrait_intercept",
+                    "user_message": "参考素材包含真人照片被安全策略拦截，即梦兜底通道未启用，请联系管理员配置 JIMENG_AK/SK。",
+                    "status_code": 0,
+                    "detail": detail,
+                    "provider": "jimeng",
+                }
+            else:
+                self.last_video_error = {
+                    "error_code": "auth_error",
+                    "user_message": "即梦视频通道未配置（JIMENG_AK/SK 缺失），请联系管理员。",
+                    "status_code": 0,
+                    "detail": detail,
+                    "provider": "jimeng",
+                }
+            logger.error("[jimeng] %s, portrait_fallback=%s", detail, _portrait_fallback)
+            return None
+        if not image_url:
+            self.last_video_error = {
+                "error_code": "invalid_param",
+                "user_message": "即梦图生视频必须提供参考图片。",
+                "status_code": 0,
+                "detail": "empty image_url for jimeng i2v",
+                "provider": "jimeng",
+            }
+            return None
+        # 即梦 i2v 无声视频，generate_audio 强制 False
+        jm.last_video_error = {}
+        tag = "[portrait-fallback→jimeng]" if _portrait_fallback else "[jimeng-direct]"
+        logger.info("%s 调用即梦: dur=%s ratio=%s res=%s img=%s", tag, duration, ratio, resolution, bool(image_url))
+        try:
+            result = jm.video_generation(
+                prompt=prompt,
+                image_url=image_url,
+                duration=duration,
+                ratio=ratio,
+                resolution=resolution,
+                output_dir=output_dir,
+                generate_audio=False,
+            )
+        except Exception as je:
+            logger.error("%s 即梦 video_generation 异常: %s", tag, je, exc_info=True)
+            self.last_video_error = {
+                "error_code": "unknown",
+                "user_message": f"即梦视频生成异常：{je!s}"[:200],
+                "status_code": 0,
+                "detail": str(je),
+                "provider": "jimeng",
+            }
+            return None
+        if not result and jm.last_video_error:
+            # 透传即梦错误；如果即梦也返回 portrait_intercept，说明图片真的有问题，直接给用户
+            jm_err = dict(jm.last_video_error)
+            jm_err["provider"] = "jimeng"
+            if _portrait_fallback and jm_err.get("error_code") == "portrait_intercept":
+                jm_err["user_message"] = (
+                    "参考素材真人肖像审核未通过（方舟+即梦双通道均被拦截），请更换非真人或授权清晰的照片后重试。"
+                )
+            self.last_video_error = jm_err
+            return None
+        if result:
+            # 补充 usage 里的 provider 标记
+            u = result.get("usage") or {}
+            u.setdefault("provider", "jimeng")
+            u.setdefault("model_key", "jimeng-3.0")
+            result["usage"] = u
+            logger.info("%s 即梦生成成功: %s", tag, result.get("video_path"))
+        return result
+
+    def get_last_video_error(self) -> dict:
+        """返回最近一次 video_generation 失败的详细错误。空 dict 表示上次成功或未调用。"""
+        return dict(self.last_video_error or {})
+
+
+def json_safe_dumps(obj: Any, max_len: int = 2000) -> str:
+    """安全 json 序列化，失败则 fallback 到 repr，超长截断。"""
+    try:
+        import json as _json
+
+        s = _json.dumps(obj, ensure_ascii=False, default=str)
+    except Exception:
+        s = repr(obj)
+    if len(s) > max_len:
+        s = s[:max_len] + f"...(truncated, total {len(s)})"
+    return s
+
 
 # ── 单例 ─────────────────────────────────────────────────────────────────────
 

packages/shared/ai_service.py

@@ -618,20 +618,23 @@ def call_video_generation(
     reference_audios: list[str] | None = None,
     reference_videos: list[str] | None = None,
 ) -> dict | None:
-    """调用 Seedance 2.5 生成视频（v1.6.1 单次出片版）。
+    """调用 Seedance / Wan 视频生成（v1.6.2 多模型版）。
 
     成功返回 {"video_path": str, "usage": dict | None}（usage 含 completion_tokens），失败返回 None。
-
-    v1.6.1 关键约束（避免 20min 卡死）：
-    - 参考音频/视频/多图全部放进 content 数组并带 role=reference_audio/reference_video/reference_image；
-    - 纯首帧无参考时（first_frame 模式），Seedance 2.5 强制 ratio=adaptive；
-      传了参考音/视/多图时走 omni_reference 模式，ratio 可指定为 9:16（客户端内部自动判断）。
-    - ratio 默认 9:16（竖屏），客户端会根据是否有参考自动在 first_frame/adaptive 与 omni/9:16 间切换；
-      若创建任务因 ratio 报错（HTTP 400），客户端会自动回退到 adaptive 再试一次。
+    失败时错误详情会写入 client.last_video_error，可通过 get_last_video_error() 读取：
+      {"error_code": str, "user_message": str, "status_code": int, "detail": str, ...}
     """
     client = get_doubao_client()
     if not client.is_available:
-        logger.warning("[ai_service] 豆包客户端未配置，跳过视频生成")
+        msg = "豆包客户端未配置（DOUBAO_API_KEY 缺失），跳过视频生成"
+        logger.warning("[ai_service] %s", msg)
+        # 写入 last_video_error 供上层读取
+        client.last_video_error = {
+            "error_code": "auth_error",
+            "user_message": "视频生成服务未配置，请联系管理员。",
+            "status_code": 0,
+            "detail": msg,
+        }
         return None
     effective_ratio = ratio or "9:16"
     try:
@@ -653,4 +656,21 @@ def call_video_generation(
         return client.video_generation(**kwargs)
     except Exception as e:
         logger.error("[ai_service] call_video_generation 异常: %s", e, exc_info=True)
+        client.last_video_error = {
+            "error_code": "unknown",
+            "user_message": f"视频生成异常：{e!s}"[:200],
+            "status_code": 0,
+            "detail": str(e),
+        }
         return None
+
+
+def get_last_video_error() -> dict:
+    """读取最近一次视频生成失败的详细错误（含 error_code/user_message/status_code/detail）。
+    成功或未调用过返回空 dict。
+    """
+    try:
+        client = get_doubao_client()
+        return client.get_last_video_error() if hasattr(client, "get_last_video_error") else {}
+    except Exception:
+        return {}

packages/shared/dashscope_client.py

@@ -21,11 +21,59 @@ import httpx
 
 from packages.shared.config import get_shared_settings
 
+# 网络/超时类异常父类集合：覆盖 Timeout/Connect/Network/ReadTimeout/WriteTimeout/PoolTimeout
+_HTTP_NETWORK_ERRORS = ()
+try:
+    _HTTP_NETWORK_ERRORS = (httpx.TimeoutException, httpx.NetworkError)
+except Exception:
+    _HTTP_NETWORK_ERRORS = (Exception,)
+
+_HTTP_STATUS_ERROR = httpx.HTTPStatusError if hasattr(httpx, "HTTPStatusError") else Exception
+
 logger = logging.getLogger(__name__)
 
 _DASHSCOPE_CLIENT_SINGLETON: "DashScopeClient | None" = None
 
 
+def _classify_dashscope_error(status_code: int, body: str, task_msg: str = "") -> tuple[str, str]:
+    """DashScope 错误分类，返回 (error_code, user_message)。"""
+    body_lower = (body or "").lower()
+    msg_in_body = task_msg or ""
+    try:
+        import json as _json
+
+        parsed = _json.loads(body or "{}")
+        if isinstance(parsed, dict):
+            msg_in_body = msg_in_body or str(parsed.get("message", "") or "")
+    except Exception:
+        pass
+
+    if status_code in (401, 403):
+        return "auth_error", "Wan 3.0 服务鉴权失败（DASHSCOPE_API_KEY 无效或过期），请联系管理员。"
+    if status_code == 429 or "rate" in body_lower or "throttl" in body_lower:
+        return "rate_limit", "Wan 3.0 服务繁忙（限流），请稍等1-2分钟后重试。"
+    if status_code == 400 and any(
+        kw in body_lower for kw in ("portrait", "真人", "人脸", "肖像", "content_violation", "risk", "blocked")
+    ):
+        return (
+            "portrait_intercept",
+            "参考素材包含真人照片或违规内容被安全策略拦截，请移除真人图片或调整文案后重试。",
+        )
+    if status_code == 404 or ("not found" in body_lower) or ("model" in body_lower and "not exist" in body_lower):
+        return "model_not_found", "Wan 3.0 模型未开通或模型ID无效，请联系管理员。"
+    if status_code in (402, 400) and ("quota" in body_lower or "billing" in body_lower or "insufficient" in body_lower):
+        return "quota_exceeded", "Wan 3.0 服务配额不足，请联系管理员充值或稍后重试。"
+    if status_code == 400:
+        return "invalid_param", f"Wan 3.0 参数错误：{msg_in_body or body[:200]}"
+    if status_code == 0:
+        return "network_error", "Wan 3.0 服务连接失败（网络超时），请稍后重试。"
+    # 任务内失败
+    if task_msg and any(kw in task_msg.lower() for kw in ("portrait", "真人", "人脸", "violation", "blocked")):
+        return "portrait_intercept", "Wan 3.0 视频内容被安全策略拦截，请调整文案或参考图后重试。"
+    detail = msg_in_body or body[:200]
+    return "unknown", f"Wan 3.0 视频生成失败（HTTP {status_code}）：{detail}"
+
+
 class DashScopeClient:
     """阿里云 DashScope 异步 API 客户端（Wan 3.0 等视频生成）。"""
 
@@ -38,11 +86,24 @@ class DashScopeClient:
         self.poll_interval: int = int(getattr(settings, "dashscope_video_poll_interval", 10) or 10)
         self.total_timeout: int = int(getattr(settings, "dashscope_video_timeout", 900) or 900)
         self.max_retries: int = 2
+        self.last_video_error: dict = {}
 
     @property
     def is_available(self) -> bool:
         return bool(self.api_key)
 
+    def get_last_video_error(self) -> dict:
+        return dict(self.last_video_error or {})
+
+    def _set_error(self, error_code: str, user_message: str, status_code: int = 0, detail: str = "", **extra) -> None:
+        self.last_video_error = {
+            "error_code": error_code,
+            "user_message": user_message,
+            "status_code": status_code,
+            "detail": detail[:500] if detail else "",
+            **extra,
+        }
+
     def video_generation(
         self,
         prompt: str,
@@ -57,12 +118,15 @@ class DashScopeClient:
     ) -> dict | None:
         """调用 DashScope 异步视频合成接口，轮询完成后下载到本地。
 
-        返回 {"video_path": str, "usage": dict | None}；失败返回 None。
+        返回 {"video_path": str, "usage": dict | None}；失败返回 None，错误详情写入 self.last_video_error。
         """
+        self.last_video_error = {}
         if not self.is_available:
+            self._set_error("auth_error", "Wan 3.0 API key 未配置，请联系管理员。", detail="dashscope api_key empty")
             logger.error("[dashscope] API key 未配置，无法调用视频生成")
             return None
         if not prompt or not prompt.strip():
+            self._set_error("invalid_param", "视频生成提示词不能为空。", detail="empty prompt")
             return None
 
         # DashScope 分辨率参数：720P / 1080P / 480P（大写 P）
@@ -106,18 +170,27 @@ class DashScopeClient:
             ds_res,
             bool(image_url),
         )
+        logger.info("[dashscope] 创建任务 payload: model=%s params=%s", model, params)
 
         # 创建任务
         task_id: str | None = None
-        last_err: Exception | None = None
+        last_sc = 0
+        last_body = ""
         for attempt in range(self.max_retries + 1):
             try:
                 resp = httpx.post(create_url, headers=headers, json=payload, timeout=60)
                 sc = int(getattr(resp, "status_code", 0) or 0)
-                body_text = (getattr(resp, "text", "") or "")[:1500]
+                body_text = (getattr(resp, "text", "") or "")[:2000]
+                last_sc = sc
+                last_body = body_text
                 if sc >= 400:
                     logger.error("[dashscope] 创建任务 HTTP %d: %s", sc, body_text)
-                    resp.raise_for_status()
+                    if sc >= 500 and attempt < self.max_retries:
+                        time.sleep(0.5 * (2**attempt))
+                        continue
+                    err_code, user_msg = _classify_dashscope_error(sc, body_text)
+                    self._set_error(err_code, user_msg, sc, body_text, model=model)
+                    return None
                 data = resp.json()
                 tid = (data.get("output") or {}).get("task_id")
                 if tid:
@@ -126,17 +199,34 @@ class DashScopeClient:
                 # 部分情况下 code != 错误
                 code = data.get("code")
                 if code and code != "":
-                    last_err = RuntimeError(f"dashscope create failed: {body_text[:300]}")
+                    err_code, user_msg = _classify_dashscope_error(400, body_text, str(code))
+                    self._set_error(err_code, user_msg, sc, body_text, model=model)
+                    return None
                 else:
-                    last_err = RuntimeError(f"create ok but no task_id: {str(data)[:300]}")
-            except Exception as e:
-                last_err = e
+                    self._set_error("unknown", "Wan 3.0 响应格式异常，未返回任务ID", sc, str(data)[:500], model=model)
+                    return None
+            except _HTTP_NETWORK_ERRORS as ne:
+                last_sc = 0
+                last_body = f"network error: {ne}"
+                logger.warning(
+                    "[dashscope] 网络异常 %s，重试 %d/%d", type(ne).__name__, attempt + 1, self.max_retries + 1
+                )
                 if attempt < self.max_retries:
                     time.sleep(0.5 * (2**attempt))
                     continue
-                logger.error("[dashscope] 创建任务最终失败: %s", last_err)
+                self._set_error("network_error", "Wan 3.0 服务连接失败（网络超时），请稍后重试。", 0, str(ne))
+                return None
+            except Exception as _e:
+                if attempt < self.max_retries:
+                    time.sleep(0.5 * (2**attempt))
+                    continue
+                logger.error("[dashscope] 创建任务最终失败: %s", _e)
+                self._set_error("unknown", f"Wan 3.0 创建任务异常：{_e!s}"[:200], 0, str(_e))
                 return None
         if not task_id:
+            if not self.last_video_error:
+                err_code, user_msg = _classify_dashscope_error(last_sc, last_body)
+                self._set_error(err_code, user_msg, last_sc, last_body, model=model)
             return None
 
         # 轮询任务
@@ -144,16 +234,26 @@ class DashScopeClient:
         deadline = time.time() + self.total_timeout
         video_url: str | None = None
         usage: dict | None = None
+        poll_count = 0
+        last_status = ""
         while time.time() < deadline:
+            poll_count += 1
             try:
                 r = httpx.get(poll_url, headers=headers, timeout=30)
-                if int(getattr(r, "status_code", 0) or 0) >= 400:
-                    logger.warning("[dashscope] 轮询 HTTP %d", r.status_code)
-                    time.sleep(self.poll_interval)
-                    continue
+                psc = int(getattr(r, "status_code", 0) or 0)
+                pbody = (getattr(r, "text", "") or "")[:1500]
+                if psc >= 400:
+                    logger.warning("[dashscope] 轮询 HTTP %d: %s", psc, pbody[:300])
+                    if poll_count < 3:
+                        time.sleep(self.poll_interval)
+                        continue
+                    err_code, user_msg = _classify_dashscope_error(psc, pbody)
+                    self._set_error(err_code, user_msg, psc, pbody, task_id=task_id)
+                    return None
                 d = r.json()
                 out = d.get("output") or {}
                 task_status = out.get("task_status") or d.get("task_status") or ""
+                last_status = task_status
                 if task_status == "SUCCEEDED":
                     video_url = out.get("video_url") or ""
                     usage = d.get("usage")
@@ -165,22 +265,41 @@ class DashScopeClient:
                     if video_url:
                         logger.info("[dashscope] 任务 %s 完成: %s", task_id, video_url[:120])
                         break
-                    logger.error("[dashscope] 任务 %s SUCCEEDED 但无 video_url", task_id)
+                    logger.error("[dashscope] 任务 %s SUCCEEDED 但无 video_url: %s", task_id, str(d)[:500])
+                    self._set_error(
+                        "unknown",
+                        "Wan 3.0 任务成功但未返回视频URL，请联系管理员。",
+                        200,
+                        str(d)[:500],
+                        task_id=task_id,
+                    )
                     return None
                 if task_status in ("FAILED", "FAILED_WITH_ERROR", "ERROR"):
-                    msg = out.get("message") or d.get("message") or "unknown error"
+                    msg = out.get("message") or d.get("message") or out.get("error_msg") or "unknown error"
                     logger.error("[dashscope] 任务 %s 失败: %s", task_id, msg)
+                    err_code, user_msg = _classify_dashscope_error(200, "", msg)
+                    self._set_error(err_code, user_msg, 200, msg, task_id=task_id, last_status=task_status)
                     return None
                 if task_status in ("CANCELED", "CANCELLED"):
                     logger.warning("[dashscope] 任务 %s 被取消", task_id)
+                    self._set_error("unknown", "Wan 3.0 任务被取消。", 200, "task cancelled", task_id=task_id)
                     return None
                 # PENDING / RUNNING / SUSPENDED → 继续轮询
-                logger.debug("[dashscope] 任务 %s 状态 %s，继续轮询", task_id, task_status)
+                if poll_count % 5 == 0:
+                    logger.info("[dashscope] 轮询中 task=%s status=%s polls=%d", task_id, task_status, poll_count)
             except Exception as e:
                 logger.warning("[dashscope] 轮询异常: %s", e)
             time.sleep(self.poll_interval)
         if not video_url:
             logger.error("[dashscope] 任务 %s 轮询超时（%ds）", task_id, self.total_timeout)
+            self._set_error(
+                "network_error",
+                f"Wan 3.0 视频生成超时（>{self.total_timeout}s），任务仍在排队，请稍后重试。",
+                0,
+                f"timeout after {self.total_timeout}s, polls={poll_count}, last_status={last_status}",
+                task_id=task_id,
+                last_status=last_status,
+            )
             return None
 
         # 下载视频
@@ -193,19 +312,23 @@ class DashScopeClient:
         out_path = os.path.join(out_dir, f"wan_{safe_tid}{suffix}")
         try:
             with httpx.stream("GET", video_url, timeout=300, follow_redirects=True) as resp:
-                if int(getattr(resp, "status_code", 0) or 0) >= 400:
-                    logger.error("[dashscope] 下载 HTTP %d", resp.status_code)
+                dsc = int(getattr(resp, "status_code", 0) or 0)
+                if dsc >= 400:
+                    logger.error("[dashscope] 下载 HTTP %d", dsc)
+                    self._set_error("network_error", "Wan 3.0 视频下载失败（HTTP错误），请稍后重试。", dsc)
                     return None
                 with open(out_path, "wb") as f:
                     for chunk in resp.iter_bytes(chunk_size=1024 * 256):
                         if chunk:
                             f.write(chunk)
         except Exception as e:
-            logger.error("[dashscope] 下载视频失败: %s", e)
+            logger.error("[dashscope] 下载视频失败: %s", e, exc_info=True)
+            self._set_error("network_error", f"Wan 3.0 视频下载失败：{e!s}"[:200], 0, str(e))
             return None
         size = os.path.getsize(out_path) if os.path.exists(out_path) else 0
         if size < 1024:
             logger.error("[dashscope] 下载文件过小: %d bytes", size)
+            self._set_error("unknown", "Wan 3.0 视频下载文件过小，请稍后重试。", 0, f"downloaded only {size} bytes")
             return None
         logger.info("[dashscope] 视频已下载: %s (%d bytes)", out_path, size)
         return {"video_path": out_path, "usage": usage}

packages/shared/jimeng_client.py

@@ -0,0 +1,526 @@
+"""即梦（Jimeng）视觉 API 客户端 —— 火山引擎 cvtob。
+
+#2169: 真人参考图在方舟 Seedance 走 B 端审核会被 50411 拦截，
+即梦走 C 端审核链路，普通真人照片可过审。接入即梦 i2v 作为参考图场景兜底通道。
+
+接口协议（jimeng_i2v_first_v30 —— 视频3.0 720P 首帧图生视频）：
+- 接口地址：https://visual.volcengineapi.com
+- 鉴权：火山 V4 签名（Region=cn-north-1, Service=cv），使用 AK/SK
+- 提交任务：POST ?Action=CVSync2AsyncSubmitTask&Version=2022-08-31
+  body: {"req_key": "jimeng_i2v_first_v30", "image_urls": ["<url>"], "prompt": "...", "seed": -1, "frames": 121}
+  -> {"code": 10000, "data": {"task_id": "..."}}
+- 查询任务：POST ?Action=CVSync2AsyncGetResult&Version=2022-08-31
+  body: {"req_key": "jimeng_i2v_first_v30", "task_id": "..."}
+  -> {"code": 10000, "data": {"status": "in_queue|generating|done", "video_url": "..."}}
+- 视频 URL 有效期 1 小时，必须立即下载到本地。
+"""
+
+from __future__ import annotations
+
+import hashlib
+import hmac
+import json
+import logging
+import os
+import time
+import uuid
+from datetime import datetime, timezone
+from pathlib import Path
+from typing import Any
+from urllib.parse import quote, urlparse
+
+import httpx
+
+from packages.shared.config import get_shared_settings
+
+# 网络/超时类异常父类集合
+_HTTP_NETWORK_ERRORS = ()
+try:
+    _HTTP_NETWORK_ERRORS = (httpx.TimeoutException, httpx.NetworkError)
+except Exception:
+    _HTTP_NETWORK_ERRORS = (Exception,)
+
+logger = logging.getLogger(__name__)
+
+_JIMENG_CLIENT_SINGLETON: "JimengClient | None" = None
+
+# ── V4 签名常量 ────────────────────────────────────────────────────────
+_JIMENG_REGION = "cn-north-1"
+_JIMENG_SERVICE = "cv"
+_JIMENG_VERSION = "2022-08-31"
+_ACTION_SUBMIT = "CVSync2AsyncSubmitTask"
+_ACTION_POLL = "CVSync2AsyncGetResult"
+_CONTENT_TYPE = "application/json"
+_SIGNED_HEADERS_LIST = ["content-type", "host", "x-content-sha256", "x-date"]
+_SIGNED_HEADERS_STR = ";".join(_SIGNED_HEADERS_LIST)
+
+
+def _norm_query(params: dict[str, str]) -> str:
+    """构造规范查询串：按 key 排序，URL 编码（safe=-_.~），空格->%20。"""
+    parts = []
+    for k in sorted(params.keys()):
+        v = params[k]
+        ek = quote(str(k), safe="-_.~")
+        ev = quote(str(v), safe="-_.~").replace("+", "%20")
+        parts.append(f"{ek}={ev}")
+    return "&".join(parts)
+
+
+def _hmac_sha256(key: bytes, msg: str) -> bytes:
+    return hmac.new(key, msg.encode("utf-8"), hashlib.sha256).digest()
+
+
+def _sha256_hex(data: bytes) -> str:
+    return hashlib.sha256(data).hexdigest()
+
+
+def _sign_v4(
+    ak: str,
+    sk: str,
+    method: str,
+    host: str,
+    query: dict[str, str],
+    body_bytes: bytes,
+    x_date: str,
+) -> dict[str, str]:
+    """火山 V4 签名，返回需要附加到请求的 headers 字典。
+
+    x_date 形如 "20260101T120000Z"（UTC）。
+    short_date = x_date[:8]（YYYYMMDD）。
+    """
+    short_date = x_date[:8]
+    payload_hash = _sha256_hex(body_bytes)
+    canon_uri = "/"
+    canon_query = _norm_query(query)
+    canon_headers = f"content-type:{_CONTENT_TYPE}\nhost:{host}\nx-content-sha256:{payload_hash}\nx-date:{x_date}\n"
+    canon_request = f"{method}\n{canon_uri}\n{canon_query}\n{canon_headers}\n{_SIGNED_HEADERS_STR}\n{payload_hash}"
+    credential_scope = f"{short_date}/{_JIMENG_REGION}/{_JIMENG_SERVICE}/request"
+    string_to_sign = f"HMAC-SHA256\n{x_date}\n{credential_scope}\n{_sha256_hex(canon_request.encode('utf-8'))}"
+    k_date = _hmac_sha256(sk.encode("utf-8"), short_date)
+    k_region = _hmac_sha256(k_date, _JIMENG_REGION)
+    k_service = _hmac_sha256(k_region, _JIMENG_SERVICE)
+    k_signing = _hmac_sha256(k_service, "request")
+    signature = hmac.new(k_signing, string_to_sign.encode("utf-8"), hashlib.sha256).hexdigest()
+    authorization = (
+        f"HMAC-SHA256 Credential={ak}/{credential_scope}, SignedHeaders={_SIGNED_HEADERS_STR}, Signature={signature}"
+    )
+    return {
+        "Content-Type": _CONTENT_TYPE,
+        "Host": host,
+        "X-Content-Sha256": payload_hash,
+        "X-Date": x_date,
+        "Authorization": authorization,
+    }
+
+
+# ── 错误分类 ──────────────────────────────────────────────────────────
+
+# 即梦业务码 -> 是否可重试映射
+_JIMENG_RETRYABLE_CODES = {50511, 50516, 50429, 50430, 50500, 50501}
+_JIMENG_NON_RETRYABLE_CODES = {50411, 50412, 50413, 50512, 50513, 50514}
+
+
+def _classify_jimeng_error(status_code: int, body: str, biz_code: int | None = None) -> tuple[str, str, bool]:
+    """即梦错误分类，返回 (error_code, user_message, is_retryable)。"""
+    code = biz_code if biz_code is not None else 0
+    body_lower = (body or "").lower()
+
+    # 业务码优先
+    if code == 50411:
+        return (
+            "portrait_intercept",
+            "即梦通道：参考图片前审核未通过（Pre Img Risk Not Pass），请更换参考图后重试。",
+            False,
+        )
+    if code == 50511:
+        return "task_failed", "即梦通道：输出图片后审核未通过，可稍后重试。", True
+    if code in (50412, 50413, 50512):
+        return "invalid_param", "即梦通道：提示词或文本审核不通过，请调整文案后重试。", False
+    if code == 50516:
+        return "task_failed", "即梦通道：输出视频后审核未通过，可稍后重试。", True
+    if code in (50429, 50430):
+        return "rate_limit", "即梦通道：QPS/并发超限，请稍等 1-2 分钟后重试。", True
+    if code in (50500, 50501):
+        return "network_error", "即梦通道：服务内部错误，可稍后重试。", True
+
+    # HTTP 层兜底
+    if status_code in (401, 403):
+        return "auth_error", "即梦通道：AK/SK 鉴权失败，请联系管理员检查 JIMENG_AK/SK 配置。", False
+    if status_code == 429:
+        return "rate_limit", "即梦通道：服务限流，请稍后重试。", True
+    if status_code == 404:
+        return "model_not_found", "即梦通道：接口不存在（req_key 或 Action 错误），请联系管理员。", False
+    if status_code in (402, 400) and any(kw in body_lower for kw in ("quota", "billing", "insufficient", "余额")):
+        return "quota_exceeded", "即梦通道：账户余额/配额不足，请联系管理员充值。", False
+    if status_code == 400:
+        msg = ""
+        try:
+            msg = str(json.loads(body or "{}").get("message", "") or "")
+        except Exception:
+            pass
+        return "invalid_param", f"即梦通道：参数错误：{msg or body[:200]}", False
+    if status_code == 0:
+        return "network_error", "即梦通道：网络连接失败，请稍后重试。", True
+    # 任务内失败
+    if code and code != 10000:
+        return "unknown", f"即梦通道：视频生成失败（错误码 {code}），请稍后重试。", code in _JIMENG_RETRYABLE_CODES
+    detail = body[:200]
+    return "unknown", f"即梦通道：视频生成失败（HTTP {status_code}）：{detail}", False
+
+
+# ── 即梦客户端 ────────────────────────────────────────────────────────
+
+
+class JimengClient:
+    """火山引擎即梦视觉 API（cvtob）异步客户端，支持图生视频首帧（jimeng_i2v_first_v30）。"""
+
+    def __init__(self) -> None:
+        settings = get_shared_settings()
+        self.ak: str = getattr(settings, "jimeng_ak", "") or os.getenv("JIMENG_AK", "")
+        self.sk: str = getattr(settings, "jimeng_sk", "") or os.getenv("JIMENG_SK", "")
+        self.base_url: str = (getattr(settings, "jimeng_base_url", "") or "https://visual.volcengineapi.com").rstrip(
+            "/"
+        )
+        self.req_key: str = getattr(settings, "jimeng_req_key", "") or "jimeng_i2v_first_v30"
+        self.poll_interval: int = int(getattr(settings, "jimeng_video_poll_interval", 5) or 5)
+        self.total_timeout: int = int(getattr(settings, "jimeng_video_timeout", 600) or 600)
+        self.max_retries: int = 2
+        self.last_video_error: dict = {}
+        # 解析 base_url 里的 host（用于签名 Host 头）
+        parsed = urlparse(self.base_url)
+        self.host: str = parsed.netloc or "visual.volcengineapi.com"
+
+    @property
+    def is_available(self) -> bool:
+        return bool(self.ak and self.sk)
+
+    def get_last_video_error(self) -> dict:
+        return dict(self.last_video_error or {})
+
+    def _set_error(self, error_code: str, user_message: str, status_code: int = 0, detail: str = "", **extra) -> None:
+        self.last_video_error = {
+            "error_code": error_code,
+            "user_message": user_message,
+            "status_code": status_code,
+            "detail": detail[:500] if detail else "",
+            "provider": "jimeng",
+            **extra,
+        }
+
+    # ── 内部 HTTP：签名 + 请求 ──────────────────────────────────────
+
+    def _signed_request(
+        self,
+        method: str,
+        action: str,
+        body_obj: dict[str, Any],
+        timeout: float = 60.0,
+    ) -> tuple[int, str, dict]:
+        """发送一次带 V4 签名的请求，返回 (status_code, body_text, parsed_json)。"""
+        body_bytes = json.dumps(body_obj, ensure_ascii=False).encode("utf-8")
+        query = {"Action": action, "Version": _JIMENG_VERSION}
+        x_date = datetime.now(timezone.utc).strftime("%Y%m%dT%H%M%SZ")
+        headers = _sign_v4(self.ak, self.sk, method, self.host, query, body_bytes, x_date)
+        url = f"{self.base_url}/?{_norm_query(query)}"
+        resp = httpx.request(
+            method,
+            url,
+            headers=headers,
+            content=body_bytes,
+            timeout=timeout,
+        )
+        sc = int(getattr(resp, "status_code", 0) or 0)
+        text = getattr(resp, "text", "") or ""
+        try:
+            data = resp.json()
+        except Exception:
+            data = {}
+        return sc, text, data
+
+    # ── 提交任务 ────────────────────────────────────────────────────
+
+    def _submit_task(
+        self,
+        prompt: str,
+        image_url: str,
+        frames: int = 121,
+        seed: int = -1,
+    ) -> str | None:
+        """提交图生视频任务，成功返回 task_id；失败写 last_video_error 并返回 None。"""
+        body: dict[str, Any] = {
+            "req_key": self.req_key,
+            "prompt": prompt.strip()[:800],
+            "image_urls": [image_url],
+            "seed": int(seed) if seed and seed > 0 else -1,
+            "frames": int(frames),
+        }
+        last_sc = 0
+        last_body = ""
+        for attempt in range(self.max_retries + 1):
+            try:
+                sc, text, data = self._signed_request("POST", _ACTION_SUBMIT, body, timeout=60.0)
+                last_sc, last_body = sc, text
+                if sc >= 400:
+                    logger.error("[jimeng] 提交 HTTP %d: %s", sc, text[:500])
+                    if sc >= 500 and attempt < self.max_retries:
+                        time.sleep(0.8 * (2**attempt))
+                        continue
+                    biz_code = data.get("code") if isinstance(data, dict) else None
+                    err_code, user_msg, _ = _classify_jimeng_error(sc, text, biz_code)
+                    self._set_error(err_code, user_msg, sc, text, req_key=self.req_key)
+                    return None
+                code = data.get("code") if isinstance(data, dict) else None
+                if code == 10000:
+                    d = data.get("data") or {}
+                    tid = d.get("task_id")
+                    if tid:
+                        return str(tid)
+                err_code, user_msg, retry = _classify_jimeng_error(sc, text, code)
+                logger.error(
+                    "[jimeng] 提交业务错误 code=%s msg=%s",
+                    code,
+                    (data.get("message") if isinstance(data, dict) else ""),
+                )
+                if retry and attempt < self.max_retries:
+                    time.sleep(0.8 * (2**attempt))
+                    continue
+                self._set_error(err_code, user_msg, sc, text, req_key=self.req_key, biz_code=code)
+                return None
+            except _HTTP_NETWORK_ERRORS as ne:
+                last_sc, last_body = 0, f"network error: {ne}"
+                logger.warning(
+                    "[jimeng] 提交网络异常 %s，重试 %d/%d", type(ne).__name__, attempt + 1, self.max_retries + 1
+                )
+                if attempt < self.max_retries:
+                    time.sleep(0.8 * (2**attempt))
+                    continue
+                self._set_error("network_error", "即梦通道：提交任务网络异常，请稍后重试。", 0, str(ne))
+                return None
+            except Exception as e:
+                last_sc, last_body = 0, f"exception: {e}"
+                logger.error("[jimeng] 提交异常: %s", e, exc_info=True)
+                if attempt < self.max_retries:
+                    time.sleep(0.8 * (2**attempt))
+                    continue
+                self._set_error("unknown", f"即梦通道：提交任务异常：{e!s}"[:200], 0, str(e))
+                return None
+        if not self.last_video_error:
+            err_code, user_msg, _ = _classify_jimeng_error(last_sc, last_body)
+            self._set_error(err_code, user_msg, last_sc, last_body)
+        return None
+
+    # ── 轮询结果 ────────────────────────────────────────────────────
+
+    def _poll_result(self, task_id: str) -> str | None:
+        """轮询任务直到 done/failed/expired/timeout，成功返回 video_url。"""
+        deadline = time.time() + self.total_timeout
+        poll_count = 0
+        last_status = ""
+        poll_body = {"req_key": self.req_key, "task_id": task_id}
+        while time.time() < deadline:
+            poll_count += 1
+            try:
+                sc, text, data = self._signed_request("POST", _ACTION_POLL, poll_body, timeout=30.0)
+                if sc >= 400:
+                    logger.warning("[jimeng] 轮询 HTTP %d: %s", sc, text[:300])
+                    if poll_count < 3:
+                        time.sleep(self.poll_interval)
+                        continue
+                    err_code, user_msg, _ = _classify_jimeng_error(sc, text)
+                    self._set_error(err_code, user_msg, sc, text, task_id=task_id)
+                    return None
+                code = data.get("code") if isinstance(data, dict) else None
+                d = data.get("data") if isinstance(data, dict) else None
+                if code != 10000 or not isinstance(d, dict):
+                    err_code, user_msg, retry = _classify_jimeng_error(sc, text, code)
+                    logger.error(
+                        "[jimeng] 轮询业务错误 task=%s code=%s msg=%s",
+                        task_id,
+                        code,
+                        (data.get("message") if isinstance(data, dict) else ""),
+                    )
+                    if retry and poll_count < 3:
+                        time.sleep(self.poll_interval)
+                        continue
+                    self._set_error(err_code, user_msg, sc, text, task_id=task_id, biz_code=code)
+                    return None
+                status = d.get("status", "") or ""
+                last_status = status
+                if status == "done":
+                    video_url = d.get("video_url") or ""
+                    if video_url:
+                        logger.info("[jimeng] 任务 %s 完成 polls=%d", task_id, poll_count)
+                        return str(video_url)
+                    logger.error("[jimeng] 任务 %s done 但无 video_url: %s", task_id, str(d)[:500])
+                    self._set_error(
+                        "unknown",
+                        "即梦通道：任务成功但未返回视频URL，请联系管理员。",
+                        200,
+                        str(d)[:500],
+                        task_id=task_id,
+                    )
+                    return None
+                if status in ("not_found", "expired"):
+                    logger.error("[jimeng] 任务 %s 状态 %s", task_id, status)
+                    self._set_error(
+                        "network_error" if status == "expired" else "unknown",
+                        f"即梦通道：任务{'已过期' if status == 'expired' else '未找到'}，请重新提交。",
+                        200,
+                        f"task {status}",
+                        task_id=task_id,
+                    )
+                    return None
+                if poll_count % 6 == 0:
+                    logger.info("[jimeng] 轮询中 task=%s status=%s polls=%d", task_id, status, poll_count)
+            except _HTTP_NETWORK_ERRORS as ne:
+                logger.warning("[jimeng] 轮询网络异常 %s", ne)
+            except Exception as e:
+                logger.debug("[jimeng] 轮询异常: %s", e)
+            time.sleep(self.poll_interval)
+        logger.error(
+            "[jimeng] 任务 %s 轮询超时（%ds）polls=%d last_status=%s",
+            task_id,
+            self.total_timeout,
+            poll_count,
+            last_status,
+        )
+        self._set_error(
+            "network_error",
+            f"即梦通道：视频生成超时（>{self.total_timeout}s），任务仍在排队，请稍后重试。",
+            0,
+            f"timeout after {self.total_timeout}s, polls={poll_count}, last_status={last_status}",
+            task_id=task_id,
+            last_status=last_status,
+        )
+        return None
+
+    # ── 下载视频 ────────────────────────────────────────────────────
+
+    def _download_video(self, video_url: str, output_dir: str, task_id: str) -> str | None:
+        os.makedirs(output_dir, exist_ok=True)
+        suffix = Path(urlparse(video_url).path).suffix or ".mp4"
+        if suffix.lower() not in (".mp4", ".mov", ".webm"):
+            suffix = ".mp4"
+        safe_tid = "".join(c if c.isalnum() or c in "-_" else "_" for c in task_id)[:40]
+        out_path = os.path.join(output_dir, f"jimeng_{safe_tid}_{uuid.uuid4().hex[:8]}{suffix}")
+        try:
+            with httpx.stream("GET", video_url, timeout=180, follow_redirects=True) as resp:
+                dsc = int(getattr(resp, "status_code", 0) or 0)
+                if dsc >= 400:
+                    logger.error("[jimeng] 下载 HTTP %d", dsc)
+                    self._set_error("network_error", "即梦通道：视频下载失败（HTTP错误），请稍后重试。", dsc)
+                    return None
+                with open(out_path, "wb") as f:
+                    for chunk in resp.iter_bytes(chunk_size=1024 * 256):
+                        if chunk:
+                            f.write(chunk)
+        except Exception as e:
+            logger.error("[jimeng] 下载视频失败: %s", e, exc_info=True)
+            self._set_error("network_error", f"即梦通道：视频下载失败：{e!s}"[:200], 0, str(e))
+            return None
+        size = os.path.getsize(out_path) if os.path.exists(out_path) else 0
+        if size < 1024:
+            logger.error("[jimeng] 下载文件过小: %d bytes", size)
+            self._set_error("unknown", "即梦通道：视频下载文件过小，请稍后重试。", 0, f"downloaded only {size} bytes")
+            try:
+                os.remove(out_path)
+            except Exception:
+                pass
+            return None
+        logger.info("[jimeng] 视频已下载: %s (%d bytes)", out_path, size)
+        return out_path
+
+    # ── 对外主入口 ──────────────────────────────────────────────────
+
+    def video_generation(
+        self,
+        prompt: str,
+        *,
+        image_url: str,
+        duration: int = 5,
+        ratio: str | None = "9:16",
+        resolution: str = "720p",
+        output_dir: str | None = None,
+        generate_audio: bool = False,
+    ) -> dict | None:
+        """即梦图生视频主入口。
+
+        成功返回 {"video_path": str, "usage": {"provider","duration_seconds","frames","req_key","billing_mode"}}；
+        失败返回 None，详情在 self.last_video_error。
+
+        注意：jimeng_i2v_first_v30 不支持原生音频（generate_audio 被忽略，返回无声视频），
+        音频由后续 ffmpeg 合成阶段叠加 TTS。
+        支持时长：5s(frames=121)/10s(frames=241)，>10s 截断并打 warning。
+        分辨率固定 720P；ratio 对首帧 i2v 无效（自动按图片比例）。
+        """
+        self.last_video_error = {}
+        if not self.is_available:
+            self._set_error(
+                "auth_error",
+                "即梦通道未配置（JIMENG_AK/SK 缺失），请联系管理员。",
+                detail="jimeng ak/sk empty",
+            )
+            logger.error("[jimeng] AK/SK 未配置，无法调用")
+            return None
+        if not prompt or not prompt.strip():
+            self._set_error("invalid_param", "视频生成提示词不能为空。", detail="empty prompt")
+            return None
+        if not image_url or not image_url.strip():
+            self._set_error("invalid_param", "即梦图生视频必须提供参考图片。", detail="empty image_url")
+            return None
+
+        dur = int(duration or 5)
+        if dur <= 5:
+            frames = 121
+            real_dur = 5
+        elif dur <= 10:
+            frames = 241
+            real_dur = 10
+        else:
+            logger.warning("[jimeng] 请求时长 %ds 超出即梦 i2v 上限 10s，截断到 10s（frames=241）", dur)
+            frames = 241
+            real_dur = 10
+
+        out_dir = output_dir or "/tmp"
+        logger.info(
+            "[jimeng] 提交任务: req_key=%s dur=%ds(frames=%d) ratio=%s res=%s gen_audio=%s img=%s",
+            self.req_key,
+            real_dur,
+            frames,
+            ratio,
+            resolution,
+            generate_audio,
+            bool(image_url),
+        )
+
+        task_id = self._submit_task(prompt=prompt, image_url=image_url, frames=frames, seed=-1)
+        if not task_id:
+            return None
+        logger.info("[jimeng] 任务已提交: task_id=%s", task_id)
+
+        video_url = self._poll_result(task_id)
+        if not video_url:
+            return None
+
+        local_path = self._download_video(video_url, out_dir, task_id)
+        if not local_path:
+            return None
+
+        usage = {
+            "provider": "jimeng",
+            "duration_seconds": real_dur,
+            "frames": frames,
+            "req_key": self.req_key,
+            "billing_mode": "per_second",
+        }
+        return {"video_path": local_path, "usage": usage}
+
+
+def get_jimeng_client() -> "JimengClient | None":
+    """返回即梦客户端单例；未配置 AK/SK 时返回 None。"""
+    global _JIMENG_CLIENT_SINGLETON
+    if _JIMENG_CLIENT_SINGLETON is None:
+        _JIMENG_CLIENT_SINGLETON = JimengClient()
+    if not _JIMENG_CLIENT_SINGLETON.is_available:
+        return None
+    return _JIMENG_CLIENT_SINGLETON

tests/unit/test_ai_client_video.py

@@ -556,3 +556,107 @@ class TestResolveVideoModelId:
         # 未知 model key 会通过 get_viral_video_model_config 回落到 seedance-2.5
         with caplog.at_level(logging.WARNING, logger="shared.ai_client"):
             assert fn("some-random-model") == "doubao-seedance-2-5-260628"
+
+
+# ── #2165 详细错误信息和 last_video_error ─────────────────────────
+
+
+class TestVideoGenerationLastError:
+    def test_create_400_portrait_returns_user_message(self, tmp_path):
+        """#2169: HTTP 400 + 真人拦截关键词 → 自动尝试即梦兜底；即梦未配时返回 portrait_intercept。"""
+        client = _make_client(max_retries=0)
+        create_resp = MagicMock()
+        create_resp.status_code = 400
+        create_resp.text = '{"error":{"code":"ContentRisk","message":"Real person face detected in reference image, portrait blocked"}}'
+        create_resp.json.return_value = {"error": {"code": "ContentRisk", "message": "..."}}
+        create_resp.raise_for_status.side_effect = httpx.HTTPStatusError(
+            "bad", request=MagicMock(), response=create_resp
+        )
+        with (
+            patch("packages.shared.ai_client.httpx.post", return_value=create_resp),
+            patch("packages.shared.ai_client.time.sleep", return_value=None),
+            patch("packages.shared.ai_client.get_shared_settings") as mock_s,
+            # jimeng 未配置，fallback 后仍返回 portrait_intercept（提示用户需要配置即梦）
+            patch("packages.shared.jimeng_client.get_jimeng_client", return_value=None),
+        ):
+            mock_s.return_value = MagicMock(
+                doubao_video_poll_interval=0, doubao_video_timeout=1, doubao_video_model="seedance"
+            )
+            result = client.video_generation("p", output_dir=str(tmp_path), image_url="https://img/x.jpg")
+            assert result is None
+            err = client.get_last_video_error()
+            assert err["error_code"] == "portrait_intercept"
+            # 即梦兜底未启用时提示包含"真人照片"/"即梦"等关键字
+            assert "真人" in err["user_message"] or "肖像" in err["user_message"] or "即梦" in err["user_message"]
+            # 方舟本身 status_code=400（最后一个错误可能被即梦兜底覆盖，但 error_code 不变）
+            assert err["status_code"] in (0, 400)
+
+    def test_create_401_returns_auth_error(self, tmp_path):
+        client = _make_client(max_retries=0)
+        create_resp = MagicMock()
+        create_resp.status_code = 401
+        create_resp.text = '{"error":{"message":"Unauthorized"}}'
+        create_resp.json.return_value = {"error": {"message": "Unauthorized"}}
+        create_resp.raise_for_status.side_effect = httpx.HTTPStatusError(
+            "auth", request=MagicMock(), response=create_resp
+        )
+        with (
+            patch("packages.shared.ai_client.httpx.post", return_value=create_resp),
+            patch("packages.shared.ai_client.time.sleep", return_value=None),
+            patch("packages.shared.ai_client.get_shared_settings") as mock_s,
+        ):
+            mock_s.return_value = MagicMock(
+                doubao_video_poll_interval=0, doubao_video_timeout=1, doubao_video_model="seedance"
+            )
+            result = client.video_generation("p", output_dir=str(tmp_path))
+            assert result is None
+            err = client.get_last_video_error()
+            assert err["error_code"] == "auth_error"
+            assert err["status_code"] == 401
+
+    def test_poll_failed_returns_task_failed_error(self, tmp_path):
+        """轮询 status=failed 时应记录 task_failed 错误并含 detail。"""
+        client = _make_client(max_retries=0)
+        create_resp = MagicMock()
+        create_resp.status_code = 200
+        create_resp.json.return_value = {"id": "t-fail"}
+        create_resp.raise_for_status = MagicMock()
+        poll_resp = MagicMock()
+        poll_resp.status_code = 200
+        poll_resp.json.return_value = {
+            "status": "failed",
+            "error": {"code": "InvalidParam", "message": "resolution invalid"},
+        }
+        poll_resp.raise_for_status = MagicMock()
+        with (
+            patch("packages.shared.ai_client.httpx.post", return_value=create_resp),
+            patch("packages.shared.ai_client.httpx.get", return_value=poll_resp),
+            patch("packages.shared.ai_client.time.sleep", return_value=None),
+            patch("packages.shared.ai_client.time.time", side_effect=_fake_time_factory()),
+            patch("packages.shared.ai_client.get_shared_settings") as mock_s,
+        ):
+            mock_s.return_value = MagicMock(
+                doubao_video_poll_interval=0, doubao_video_timeout=10, doubao_video_model="seedance"
+            )
+            result = client.video_generation("p", output_dir=str(tmp_path))
+            assert result is None
+            err = client.get_last_video_error()
+            assert err["error_code"] == "task_failed"
+            assert "InvalidParam" in err.get("detail", "") or err["status_code"] == 200
+
+
+class TestAiServiceLastVideoError:
+    def test_call_video_generation_returns_none_sets_error(self):
+        """失败后 get_last_video_error 应返回结构化错误信息。"""
+        from packages.shared import ai_service
+
+        mock_client = MagicMock()
+        mock_client.is_available = True
+        mock_client.last_video_error = {"error_code": "unknown", "user_message": "test"}
+        mock_client.get_last_video_error.return_value = {"error_code": "unknown", "user_message": "test"}
+        mock_client.video_generation.return_value = None
+        with patch("packages.shared.ai_service.get_doubao_client", return_value=mock_client):
+            assert ai_service.call_video_generation("p") is None
+            err = ai_service.get_last_video_error()
+            assert err["error_code"] == "unknown"
+            assert "user_message" in err

tests/unit/test_catalog.py

@@ -0,0 +1,198 @@
+"""catalog 应用服务单测：会员套餐 / 积分包从共享库读取与字段映射。"""
+
+from __future__ import annotations
+
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+
+@pytest.fixture(autouse=True)
+def _clear_cache():
+    from packages.application.catalog import admin_catalog
+
+    admin_catalog._cache.clear()
+    yield
+    admin_catalog._cache.clear()
+
+
+def _row(**kw):
+    row = MagicMock()
+    for k, v in kw.items():
+        setattr(row, k, v)
+    return row
+
+
+class TestMembershipPlans:
+    def test_yearly_plan_mapping(self):
+        from packages.application.catalog import admin_catalog
+
+        row = _row(
+            plan_key="premium_yearly",
+            name="高级会员年卡",
+            description="年度订阅",
+            monthly_price=0,
+            yearly_price=399,
+            quotas={"4k": True, "batch_render": True, "credits_per_month": 500},
+            display_order=1,
+        )
+        session = MagicMock()
+        session.execute.return_value.fetchall.return_value = [row]
+        sl = MagicMock(return_value=session)
+
+        with patch("packages.adapters.sqlalchemy_impl.session.SessionLocal", sl, create=True):
+            plans = admin_catalog.get_membership_plans()
+
+        assert len(plans) == 1
+        p = plans[0]
+        assert p["plan_id"] == "premium_yearly"
+        assert p["billing_cycle"] == "yearly"
+        assert p["price_cents"] == 39900
+        assert p["monthly_price_cents"] == 3325
+        assert p["duration_days"] == 365
+        assert p["features"]["4K 超清分辨率"] is True
+        assert p["features"]["credits_per_month"] == 500
+        session.close.assert_called_once()
+
+    def test_monthly_plan_mapping(self):
+        from packages.application.catalog import admin_catalog
+
+        row = _row(
+            plan_key="premium_monthly",
+            name="高级会员月卡",
+            description=None,
+            monthly_price=39,
+            yearly_price=0,
+            quotas=None,
+            display_order=2,
+        )
+        session = MagicMock()
+        session.execute.return_value.fetchall.return_value = [row]
+        sl = MagicMock(return_value=session)
+
+        with patch("packages.adapters.sqlalchemy_impl.session.SessionLocal", sl, create=True):
+            plans = admin_catalog.get_membership_plans()
+
+        assert len(plans) == 1
+        p = plans[0]
+        assert p["billing_cycle"] == "monthly"
+        assert p["price_cents"] == 3900
+        assert p["monthly_price_cents"] == 3900
+        assert p["duration_days"] == 30
+        assert p["features"] == {}
+
+    def test_both_cycles_expanded(self):
+        from packages.application.catalog import admin_catalog
+
+        row = _row(
+            plan_key="premium",
+            name="高级会员",
+            description=None,
+            monthly_price=39,
+            yearly_price=399,
+            quotas={},
+            display_order=1,
+        )
+        session = MagicMock()
+        session.execute.return_value.fetchall.return_value = [row]
+        sl = MagicMock(return_value=session)
+
+        with patch("packages.adapters.sqlalchemy_impl.session.SessionLocal", sl, create=True):
+            plans = admin_catalog.get_membership_plans()
+
+        cycles = {p["billing_cycle"] for p in plans}
+        assert cycles == {"yearly", "monthly"}
+
+    def test_no_session_returns_empty(self):
+        from packages.application.catalog import admin_catalog
+
+        with patch("packages.adapters.sqlalchemy_impl.session.SessionLocal", None, create=True):
+            assert admin_catalog.get_membership_plans() == []
+
+
+class TestPointsPackages:
+    def test_package_mapping_with_bonus(self):
+        from packages.application.catalog import admin_catalog
+
+        row = _row(
+            package_key="pkg_100",
+            name="100元充值包",
+            price=100,
+            credits=1000,
+            bonus_credits=100,
+            is_recommended=True,
+            description="推荐",
+            sort_order=4,
+        )
+        session = MagicMock()
+        session.execute.return_value.fetchall.return_value = [row]
+        sl = MagicMock(return_value=session)
+
+        with patch("packages.adapters.sqlalchemy_impl.session.SessionLocal", sl, create=True):
+            packages = admin_catalog.get_points_packages()
+
+        assert len(packages) == 1
+        pkg = packages[0]
+        assert pkg["code"] == "pkg_100"
+        assert pkg["points"] == 1100
+        assert pkg["price_cents"] == 10000
+        assert pkg["is_recommended"] is True
+        assert pkg["unit_price"] == "¥0.091/积分"
+
+    def test_zero_credits_unit_price_safe(self):
+        from packages.application.catalog import admin_catalog
+
+        row = _row(
+            package_key="pkg_0",
+            name="空包",
+            price=0,
+            credits=0,
+            bonus_credits=0,
+            is_recommended=False,
+            description=None,
+            sort_order=0,
+        )
+        session = MagicMock()
+        session.execute.return_value.fetchall.return_value = [row]
+        sl = MagicMock(return_value=session)
+
+        with patch("packages.adapters.sqlalchemy_impl.session.SessionLocal", sl, create=True):
+            packages = admin_catalog.get_points_packages()
+
+        assert packages[0]["points"] == 0
+        assert packages[0]["price_cents"] == 0
+        assert packages[0]["unit_price"] == "¥0.000/积分"
+
+    def test_no_session_returns_empty(self):
+        from packages.application.catalog import admin_catalog
+
+        with patch("packages.adapters.sqlalchemy_impl.session.SessionLocal", None, create=True):
+            assert admin_catalog.get_points_packages() == []
+
+
+class TestPackagesRoute:
+    def test_get_packages_route_returns_items(self):
+        from app.api.routes.points import get_packages
+
+        cu = MagicMock()
+        cu.user.member_type = None
+        rows = [
+            {
+                "code": "pkg_10",
+                "name": "10元充值包",
+                "points": 100,
+                "price_cents": 1000,
+                "unit_price": "¥0.100/积分",
+            }
+        ]
+        with patch(
+            "packages.application.catalog.admin_catalog.get_points_packages",
+            return_value=rows,
+        ):
+            resp = get_packages(current_user=cu)
+
+        assert len(resp.packages) == 1
+        item = resp.packages[0]
+        assert item.code == "pkg_10"
+        assert item.points == 100
+        assert item.price_cents == 1000

tests/unit/test_dashscope_client.py

@@ -4,6 +4,7 @@ from __future__ import annotations
 
 from unittest.mock import MagicMock, mock_open, patch
 
+import httpx
 import pytest
 
 _SINGLETON = "_DASHSCOPE_CLIENT_SINGLETON"
@@ -157,3 +158,21 @@ class TestDashScopeVideoGeneration:
             c.video_generation(prompt="  ", duration=5, ratio="9:16", resolution="720p", output_dir="/tmp/videos")
             is None
         )
+
+    def test_create_400_sets_last_video_error(self, tmp_path):
+        """创建任务 HTTP 400 时应写 last_video_error。"""
+        from packages.shared import dashscope_client as dc
+
+        dc._DASHSCOPE_CLIENT_SINGLETON = None
+        with patch.dict("os.environ", {"DASHSCOPE_API_KEY": "test-key"}):
+            c = dc.DashScopeClient()
+            r = MagicMock()
+            r.status_code = 401
+            r.text = '{"code":"InvalidApiKey","message":"bad key"}'
+            r.raise_for_status.side_effect = httpx.HTTPStatusError("auth", request=MagicMock(), response=r)
+            with patch.object(dc.httpx, "post", return_value=r), patch.object(dc, "time"):
+                out = c.video_generation("p", output_dir=str(tmp_path))
+                assert out is None
+                err = c.get_last_video_error()
+                assert err["error_code"] == "auth_error"
+                assert c.last_video_error is not None

tests/unit/test_jimeng_client.py

@@ -0,0 +1,376 @@
+"""tests for packages/shared/jimeng_client.py (#2169 即梦 i2v 客户端)."""
+
+from __future__ import annotations
+
+import json
+import os
+from unittest.mock import MagicMock, mock_open, patch
+
+import pytest
+
+
+@pytest.fixture(autouse=True)
+def reset_singleton():
+    import packages.shared.jimeng_client as j
+
+    j._JIMENG_CLIENT_SINGLETON = None
+    yield
+    j._JIMENG_CLIENT_SINGLETON = None
+
+
+def _make_settings(ak="test-ak", sk="test-sk", req_key="jimeng_i2v_first_v30", timeout=60, poll_interval=2):
+    return MagicMock(
+        jimeng_ak=ak,
+        jimeng_sk=sk,
+        jimeng_base_url="https://visual.volcengineapi.com",
+        jimeng_req_key=req_key,
+        jimeng_video_timeout=timeout,
+        jimeng_video_poll_interval=poll_interval,
+    )
+
+
+# ── V4 签名单元测试 ──────────────────────────────────────────────────
+
+
+class TestV4Signature:
+    def test_sign_returns_required_headers(self):
+        from packages.shared.jimeng_client import _sign_v4
+
+        headers = _sign_v4(
+            ak="AK_TEST",
+            sk="SK_TEST",
+            method="POST",
+            host="visual.volcengineapi.com",
+            query={"Action": "CVSync2AsyncSubmitTask", "Version": "2022-08-31"},
+            body_bytes=b'{"req_key":"jimeng_i2v_first_v30"}',
+            x_date="20260101T120000Z",
+        )
+        assert headers["Content-Type"] == "application/json"
+        assert headers["Host"] == "visual.volcengineapi.com"
+        assert headers["X-Date"] == "20260101T120000Z"
+        assert "X-Content-Sha256" in headers
+        assert headers["Authorization"].startswith("HMAC-SHA256 Credential=AK_TEST/20260101/cn-north-1/cv/request")
+        assert "SignedHeaders=content-type;host;x-content-sha256;x-date" in headers["Authorization"]
+        assert "Signature=" in headers["Authorization"]
+        # 签名是 64 字符 hex
+        sig = headers["Authorization"].split("Signature=")[-1]
+        assert len(sig) == 64
+        assert all(c in "0123456789abcdef" for c in sig)
+
+    def test_sign_deterministic(self):
+        """相同输入必须产生相同签名（幂等）。"""
+        from packages.shared.jimeng_client import _sign_v4
+
+        kwargs = dict(
+            ak="AK",
+            sk="SK",
+            method="POST",
+            host="h",
+            query={"A": "1", "B": "2"},
+            body_bytes=b"{}",
+            x_date="20260101T000000Z",
+        )
+        h1 = _sign_v4(**kwargs)
+        h2 = _sign_v4(**kwargs)
+        assert h1["Authorization"] == h2["Authorization"]
+        assert h1["X-Content-Sha256"] == h2["X-Content-Sha256"]
+
+    def test_sign_different_body_different_sig(self):
+        from packages.shared.jimeng_client import _sign_v4
+
+        base = dict(ak="AK", sk="SK", method="POST", host="h", query={}, x_date="20260101T000000Z")
+        h1 = _sign_v4(body_bytes=b"a", **base)
+        h2 = _sign_v4(body_bytes=b"b", **base)
+        assert h1["Authorization"] != h2["Authorization"]
+
+    def test_payload_sha256_matches(self):
+        import hashlib
+
+        from packages.shared.jimeng_client import _sign_v4
+
+        body = b'{"prompt":"hello"}'
+        h = _sign_v4("ak", "sk", "POST", "h", {}, body, "20260101T000000Z")
+        expected = hashlib.sha256(body).hexdigest()
+        assert h["X-Content-Sha256"] == expected
+
+    def test_norm_query_sorted_and_encoded(self):
+        from packages.shared.jimeng_client import _norm_query
+
+        q = _norm_query({"B": "2", "A": "1", "C": "a b"})
+        # key 排序 + 空格→%20
+        assert q.startswith("A=1")
+        assert "B=2" in q
+        assert "C=a%20b" in q
+
+
+# ── 可用性 / 单例 ─────────────────────────────────────────────────────
+
+
+class TestAvailability:
+    def test_unavailable_without_ak_sk(self):
+        from packages.shared.jimeng_client import JimengClient, get_jimeng_client
+
+        with patch("packages.shared.jimeng_client.get_shared_settings") as ms:
+            ms.return_value = _make_settings(ak="", sk="")
+            # 重置单例
+            import packages.shared.jimeng_client as j
+
+            j._JIMENG_CLIENT_SINGLETON = None
+            assert get_jimeng_client() is None
+
+    def test_available_with_ak_sk(self):
+        from packages.shared.jimeng_client import get_jimeng_client
+
+        with patch("packages.shared.jimeng_client.get_shared_settings") as ms:
+            ms.return_value = _make_settings()
+            import packages.shared.jimeng_client as j
+
+            j._JIMENG_CLIENT_SINGLETON = None
+            c = get_jimeng_client()
+            assert c is not None
+            assert c.is_available is True
+            assert c.req_key == "jimeng_i2v_first_v30"
+
+
+# ── 错误分类 ────────────────────────────────────────────────────────
+
+
+class TestClassifyError:
+    def test_50411_is_portrait_intercept_non_retryable(self):
+        from packages.shared.jimeng_client import _classify_jimeng_error
+
+        code, msg, retry = _classify_jimeng_error(200, '{"code":50411,"message":"Pre Img Risk"}', 50411)
+        assert code == "portrait_intercept"
+        assert retry is False
+
+    def test_50429_is_rate_limit_retryable(self):
+        from packages.shared.jimeng_client import _classify_jimeng_error
+
+        code, msg, retry = _classify_jimeng_error(200, "", 50429)
+        assert code == "rate_limit"
+        assert retry is True
+
+    def test_50430_is_rate_limit(self):
+        from packages.shared.jimeng_client import _classify_jimeng_error
+
+        code, _, _ = _classify_jimeng_error(200, "", 50430)
+        assert code == "rate_limit"
+
+    def test_50500_is_network_error_retryable(self):
+        from packages.shared.jimeng_client import _classify_jimeng_error
+
+        code, _, retry = _classify_jimeng_error(200, "", 50500)
+        assert code == "network_error"
+        assert retry is True
+
+    def test_50412_is_invalid_param_non_retryable(self):
+        from packages.shared.jimeng_client import _classify_jimeng_error
+
+        code, _, retry = _classify_jimeng_error(200, "", 50412)
+        assert code == "invalid_param"
+        assert retry is False
+
+    def test_401_auth(self):
+        from packages.shared.jimeng_client import _classify_jimeng_error
+
+        code, msg, retry = _classify_jimeng_error(401, "auth fail", None)
+        assert code == "auth_error"
+        assert retry is False
+
+    def test_400_text_audit(self):
+        from packages.shared.jimeng_client import _classify_jimeng_error
+
+        code, _, _ = _classify_jimeng_error(400, "text error", None)
+        assert code == "invalid_param"
+
+
+# ── video_generation 主流程 ──────────────────────────────────────────
+
+
+class TestVideoGenerationHappyPath:
+    def test_missing_ak_returns_none(self):
+        from packages.shared.jimeng_client import JimengClient
+
+        with patch("packages.shared.jimeng_client.get_shared_settings") as ms:
+            ms.return_value = _make_settings(ak="", sk="")
+            c = JimengClient()
+        assert c.video_generation("hi", image_url="http://x/y.jpg") is None
+        err = c.last_video_error
+        assert err["error_code"] == "auth_error"
+
+    def test_empty_prompt_returns_none(self):
+        from packages.shared.jimeng_client import JimengClient
+
+        with patch("packages.shared.jimeng_client.get_shared_settings") as ms:
+            ms.return_value = _make_settings()
+            c = JimengClient()
+        assert c.video_generation("   ", image_url="http://x/y.jpg") is None
+        assert c.last_video_error["error_code"] == "invalid_param"
+
+    def test_empty_image_url_returns_none(self):
+        from packages.shared.jimeng_client import JimengClient
+
+        with patch("packages.shared.jimeng_client.get_shared_settings") as ms:
+            ms.return_value = _make_settings()
+            c = JimengClient()
+        assert c.video_generation("prompt", image_url="") is None
+        assert c.last_video_error["error_code"] == "invalid_param"
+
+    def test_duration_5s_frames_121(self):
+        """5s → frames=121，10s→frames=241，>10s 截断到10s。"""
+        from packages.shared.jimeng_client import JimengClient
+
+        with patch("packages.shared.jimeng_client.get_shared_settings") as ms:
+            ms.return_value = _make_settings(timeout=1, poll_interval=0)
+            c = JimengClient()
+
+        captured = {}
+
+        def fake_submit(prompt, image_url, frames, seed=-1):
+            captured["frames"] = frames
+            return "task-xyz"
+
+        def fake_poll(tid):
+            captured["tid"] = tid
+            return "http://example.com/v.mp4"
+
+        def fake_download(url, out_dir, tid):
+            captured["url"] = url
+            return "/tmp/fake.mp4"
+
+        # 构造一个假文件
+        os.makedirs("/tmp", exist_ok=True)
+        with open("/tmp/fake.mp4", "wb") as f:
+            f.write(b"x" * 2048)
+
+        with (
+            patch.object(c, "_submit_task", side_effect=fake_submit),
+            patch.object(c, "_poll_result", side_effect=fake_poll),
+            patch.object(c, "_download_video", side_effect=fake_download),
+        ):
+            r = c.video_generation("test", image_url="http://x/y.jpg", duration=5, output_dir="/tmp")
+        assert r is not None
+        assert captured["frames"] == 121
+        assert r["usage"]["duration_seconds"] == 5
+        assert r["usage"]["billing_mode"] == "per_second"
+        assert r["usage"]["req_key"] == "jimeng_i2v_first_v30"
+
+    def test_duration_10s_frames_241(self):
+        from packages.shared.jimeng_client import JimengClient
+
+        with patch("packages.shared.jimeng_client.get_shared_settings") as ms:
+            ms.return_value = _make_settings(timeout=1, poll_interval=0)
+            c = JimengClient()
+        captured = {}
+
+        def fake_submit(prompt, image_url, frames, seed=-1):
+            captured["frames"] = frames
+            return "tid"
+
+        def fake_poll(tid):
+            return "http://x/v.mp4"
+
+        def fake_download(url, out_dir, tid):
+            with open("/tmp/fake2.mp4", "wb") as f:
+                f.write(b"x" * 2048)
+            return "/tmp/fake2.mp4"
+
+        with (
+            patch.object(c, "_submit_task", side_effect=fake_submit),
+            patch.object(c, "_poll_result", side_effect=fake_poll),
+            patch.object(c, "_download_video", side_effect=fake_download),
+        ):
+            r = c.video_generation("hi", image_url="http://x/y.jpg", duration=10, output_dir="/tmp")
+        assert captured["frames"] == 241
+        assert r["usage"]["duration_seconds"] == 10
+
+    def test_duration_over_10s_truncates_to_10s(self):
+        from packages.shared.jimeng_client import JimengClient
+
+        with patch("packages.shared.jimeng_client.get_shared_settings") as ms:
+            ms.return_value = _make_settings(timeout=1, poll_interval=0)
+            c = JimengClient()
+        captured = {}
+
+        def fake_submit(prompt, image_url, frames, seed=-1):
+            captured["frames"] = frames
+            return "tid"
+
+        def fake_poll(tid):
+            return "http://x/v.mp4"
+
+        def fake_download(url, out_dir, tid):
+            with open("/tmp/fake3.mp4", "wb") as f:
+                f.write(b"x" * 2048)
+            return "/tmp/fake3.mp4"
+
+        with (
+            patch.object(c, "_submit_task", side_effect=fake_submit),
+            patch.object(c, "_poll_result", side_effect=fake_poll),
+            patch.object(c, "_download_video", side_effect=fake_download),
+        ):
+            r = c.video_generation("hi", image_url="http://x/y.jpg", duration=30, output_dir="/tmp")
+        assert captured["frames"] == 241
+        assert r["usage"]["duration_seconds"] == 10
+
+
+class TestSubmitTaskErrors:
+    def test_submit_50411_writes_portrait_intercept(self):
+        from packages.shared.jimeng_client import JimengClient
+
+        with patch("packages.shared.jimeng_client.get_shared_settings") as ms:
+            ms.return_value = _make_settings()
+            c = JimengClient()
+        fake_resp = MagicMock(status_code=200, text='{"code":50411,"message":"Pre Img Risk Not Pass"}')
+        fake_resp.json.return_value = {"code": 50411, "message": "Pre Img Risk Not Pass"}
+        with patch("packages.shared.jimeng_client.httpx.request", return_value=fake_resp):
+            tid = c._submit_task("p", "http://x/y.jpg", frames=121)
+        assert tid is None
+        assert c.last_video_error["error_code"] == "portrait_intercept"
+
+    def test_submit_returns_task_id(self):
+        from packages.shared.jimeng_client import JimengClient
+
+        with patch("packages.shared.jimeng_client.get_shared_settings") as ms:
+            ms.return_value = _make_settings()
+            c = JimengClient()
+        fake_resp = MagicMock(status_code=200, text='{"code":10000,"data":{"task_id":"abc"}}')
+        fake_resp.json.return_value = {"code": 10000, "data": {"task_id": "abc"}}
+        with patch("packages.shared.jimeng_client.httpx.request", return_value=fake_resp):
+            tid = c._submit_task("p", "http://x/y.jpg", frames=121)
+        assert tid == "abc"
+
+
+class TestPollResult:
+    def test_poll_done_returns_video_url(self):
+        from packages.shared.jimeng_client import JimengClient
+
+        with patch("packages.shared.jimeng_client.get_shared_settings") as ms:
+            ms.return_value = _make_settings(timeout=10, poll_interval=0)
+            c = JimengClient()
+        done_resp = MagicMock(status_code=200)
+        done_resp.json.return_value = {"code": 10000, "data": {"status": "done", "video_url": "http://x/v.mp4"}}
+        with (
+            patch("packages.shared.jimeng_client.httpx.request", return_value=done_resp),
+            patch("packages.shared.jimeng_client.time.sleep"),
+        ):
+            url = c._poll_result("abc")
+        assert url == "http://x/v.mp4"
+
+    def test_poll_timeout_returns_none(self):
+        from packages.shared.jimeng_client import JimengClient
+
+        with patch("packages.shared.jimeng_client.get_shared_settings") as ms:
+            ms.return_value = _make_settings(timeout=1, poll_interval=0)
+            c = JimengClient()
+        queue_resp = MagicMock(status_code=200)
+        queue_resp.json.return_value = {"code": 10000, "data": {"status": "in_queue"}}
+        # time.time 会被调用，模拟超时
+        with (
+            patch("packages.shared.jimeng_client.httpx.request", return_value=queue_resp),
+            patch("packages.shared.jimeng_client.time.sleep"),
+        ):
+            url = c._poll_result("abc")
+        assert url is None
+        assert c.last_video_error["error_code"] == "network_error"
+        assert "超时" in c.last_video_error["user_message"]

tests/unit/test_points_routes.py

@@ -173,33 +173,46 @@ class TestSubscriptionPlans:
         _spec.loader.exec_module(_mod)
         return _mod.list_membership_plans
 
-    def test_plans_endpoint_returns_three_tiers(self):
-        import os  # noqa: F401  (used by _import_plans_fn)
-
+    def test_plans_endpoint_reads_admin_table(self):
+        """/subscription/plans 改读管理后台 plans 表：返回 catalog 服务提供的真实档位。"""
         list_membership_plans = self._import_plans_fn()
-        resp = list_membership_plans(current_user=_make_cu())
+        real_plan = {
+            "plan_id": "premium_yearly",
+            "billing_cycle": "yearly",
+            "name": "高级会员年卡",
+            "description": "高级会员年度订阅，享受全部功能",
+            "price_cents": 39900,
+            "monthly_price_cents": 3325,
+            "duration_days": 365,
+            "features": {
+                "4K 超清分辨率": True,
+                "批量渲染": True,
+                "优先处理队列": True,
+                "credits_per_month": 500,
+            },
+        }
+        with patch(
+            "packages.application.catalog.admin_catalog.get_membership_plans",
+            return_value=[real_plan],
+        ):
+            resp = list_membership_plans(current_user=_make_cu())
         plans = resp["plans"]
-        plan_ids = {p["plan_id"] for p in plans}
-        assert plan_ids == {"monthly", "quarterly", "yearly"}
-        for p in plans:
-            assert p["price_cents"] > 0
-            assert p["duration_days"] in (30, 90, 365)
-            assert 0 < p["points_discount"] <= 1.0
-            assert "max_resolution" in p["features"]
-
-    def test_longer_plans_cheaper_per_month(self):
-        import os  # noqa: F401
+        assert len(plans) == 1
+        p0 = plans[0]
+        assert p0["plan_id"] == "premium_yearly"
+        assert p0["price_cents"] == 39900
+        assert p0["duration_days"] == 365
+        assert p0["features"]["4K 超清分辨率"] is True
 
+    def test_plans_endpoint_empty_when_all_disabled(self):
+        """后台停用全部套餐时，用户端返回空列表。"""
         list_membership_plans = self._import_plans_fn()
-        resp = list_membership_plans(current_user=_make_cu())
-        plans = resp["plans"]
-        monthly = next(p for p in plans if p["plan_id"] == "monthly")
-        quarterly = next(p for p in plans if p["plan_id"] == "quarterly")
-        yearly = next(p for p in plans if p["plan_id"] == "yearly")
-        assert monthly["monthly_price_cents"] == 1990
-        assert quarterly["monthly_price_cents"] < monthly["monthly_price_cents"]
-        assert yearly["monthly_price_cents"] < quarterly["monthly_price_cents"]
-
+        with patch(
+            "packages.application.catalog.admin_catalog.get_membership_plans",
+            return_value=[],
+        ):
+            resp = list_membership_plans(current_user=_make_cu())
+        assert resp["plans"] == []
 
 # ── P1-7: multiplier consistency ──────────────────────────────────────