完善视频提炼和视频复刻完善提交测试

core/backend/apps/ai/test_video_digest.py

@@ -523,6 +523,53 @@ class VideoDigestApiTests(TestCase):
         self.assertEqual(polled.data["task_id"], str(task.id))
         self.assertEqual(polled.data["file_name"], "参考视频.mp4")
 
+    def test_inflight_without_preview_urls_is_still_restorable(self):
+        """封面/原片直链拿不到(TOS 慢、签名失败)不代表任务死了。
+
+        前端曾拿「有没有预览图」当判活依据,退出再进来时把正在跑的任务直接取消掉,
+        用户看到的就是「任务凭空消失」。这里锁住:没有任何预览 URL 也照样回 processing。
+        """
+        from apps.ai.models import AITask
+
+        task = self._seed_digest_task(status=AITask.Status.SUBMITTED, extra_key="nopreview")
+        task.request_payload = {
+            **task.request_payload,
+            "video_url": "", "cover_url": "", "source_url": "", "source_key": "", "cover_key": "",
+        }
+        task.save(update_fields=["request_payload"])
+
+        listed = self.client.get("/api/ai/video-digest/")
+        self.assertEqual(listed.data["inflight"]["id"], str(task.id))
+        self.assertEqual(listed.data["inflight"]["status"], "processing")
+        self.assertEqual(listed.data["inflight"]["video_url"], "")
+        self.assertEqual(listed.data["inflight"]["cover_url"], "")
+
+        polled = self.client.get(f"/api/ai/video-digest/{task.id}/")
+        self.assertEqual(polled.data["status"], "processing")
+        task.refresh_from_db()
+        self.assertEqual(task.status, AITask.Status.SUBMITTED)   # 只是查看,不该被动到
+
+    def test_second_submit_is_blocked_while_one_is_running(self):
+        """已有提炼在跑时再提交要 409,并把在跑的那条带回去让前端接上。"""
+        from apps.ai.models import AITask
+
+        running = self._seed_digest_task(status=AITask.Status.SUBMITTED, extra_key="busy")
+        resp = self.client.post(
+            "/api/ai/video-digest/",
+            {"reuse_task_id": str(running.id)},
+            format="multipart",
+        )
+        self.assertEqual(resp.status_code, 409)
+        self.assertIn("完成或取消后", resp.json()["detail"])
+        self.assertEqual(resp.json()["inflight"]["id"], str(running.id))
+
+        # 收掉之后放行(这里只验闸门,不验后面的真实提炼)
+        running.status = AITask.Status.CANCELLED
+        running.save(update_fields=["status"])
+        from apps.ai.video_digest import get_inflight_team_digest
+
+        self.assertIsNone(get_inflight_team_digest(team=self.team))
+
     def test_poll_missing_job_returns_404(self):
         missing = self.client.get("/api/ai/video-digest/00000000-0000-0000-0000-000000000099/")
         self.assertEqual(missing.status_code, 404)

core/backend/apps/ai/test_video_replace.py

@@ -172,6 +172,12 @@ class SubmitVideoReplaceTests(TestCase):
         self.assertNotIn("reference_video", roles)     # 参考视频不再发给火山
         self.assertNotIn("video_url", [item.get("type") for item in content])
 
+    def _retire(self, task):
+        """把任务收成终态,好让单飞闸放行下一次提交。"""
+        task.status = AITask.Status.CANCELLED
+        task.save(update_fields=["status", "updated_at"])
+        return task
+
     def _fake_source_file(self):
         """_FileFromPath 会 stat 真实文件,给个空的临时 mp4 顶替 TOS 下载结果。"""
         tmp = tempfile.NamedTemporaryFile(suffix=".mp4", delete=False)
@@ -240,6 +246,38 @@ class SubmitVideoReplaceTests(TestCase):
         # 提炼阶段绝不能掺进商品名,否则拆出来的就不是「这条参考视频原本的样子」
         self.assertNotIn("净颜精华", str(seen["messages"]))
 
+    def test_digest_call_is_recorded_for_admin_task_monitor(self):
+        """复刻里的提炼要在运营后台任务详情的尝试链里看得到,否则出问题无从查起。"""
+        from apps.ai.models import AIModelAttempt
+
+        task = self._run_digest(self._submit())
+        attempts = list(AIModelAttempt.objects.filter(task=task, operation="video_digest").order_by("sequence"))
+        self.assertEqual(len(attempts), 1)
+        self.assertEqual(attempts[0].status, AIModelAttempt.Status.SUCCEEDED)
+        self.assertEqual(attempts[0].capability, "text")
+        self.assertEqual(attempts[0].request_summary.get("for"), "video_replace")
+        self.assertTrue(attempts[0].response_summary.get("shots"))
+        self.assertIsNotNone(attempts[0].finished_at)
+
+    def test_failed_digest_attempts_are_recorded_too(self):
+        """废稿重试也要各留一条,才能看出是「模型抽风」而不是「没跑」。"""
+        from apps.ai import video_digest
+        from apps.ai.models import AIModelAttempt
+
+        task = self._submit()
+        text_model = ModelConfig.objects.filter(capability="text", status="active").first()
+        with patch.object(video_digest, "_download_source_to_temp", return_value=self._fake_source_file()), \
+             patch.object(
+                 video_digest, "digest_input_from_upload",
+                 return_value=(None, [], 8.0, {"width": 720, "height": 1280, "file_name": "参考.mp4"}),
+             ), \
+             patch.object(video_digest, "resolve_digest_model_config", return_value=text_model), \
+             patch("apps.ai.services._collect_extract_text", side_effect=[("", {}), (DIGEST_SAMPLE, {})]):
+            run_replace_digest(task)
+        attempts = list(AIModelAttempt.objects.filter(task=task, operation="video_digest").order_by("sequence"))
+        self.assertEqual([a.status for a in attempts], ["failed", "succeeded"])
+        self.assertTrue(attempts[1].is_retry)
+
     def test_digest_retries_once_before_giving_up(self):
         """Gemini 偶尔吐废稿。复刻失败要用户从头重选素材,所以同模型再试一次。"""
         from apps.ai import video_digest
@@ -278,6 +316,52 @@ class SubmitVideoReplaceTests(TestCase):
         self.assertFalse(self.provider.create_video_task.called)
         self.assertEqual(CreditReservation.objects.filter(task=task).count(), 0)
 
+    def test_second_submit_is_blocked_while_one_is_running(self):
+        """刷新页面时前端拉状态有空档,用户容易以为「没任务」再点一次。
+        后端必须拦住,否则重复建任务、重复扣费。"""
+        from apps.ai.video_replace import VideoReplaceInProgress, get_inflight_video_replace
+
+        first = self._submit()
+        with self.assertRaises(VideoReplaceInProgress) as ctx:
+            self._submit()
+        self.assertEqual(ctx.exception.task.id, first.id)      # 409 要带上在跑的那条
+        self.assertIn("完成或取消后", str(ctx.exception))
+        self.assertEqual(get_inflight_video_replace(self.team).id, first.id)
+
+        # 收掉之后放行
+        self._retire(first)
+        self.assertIsNone(get_inflight_video_replace(self.team))
+        self.assertEqual(self._submit().status, AITask.Status.CREATED)
+
+    def test_replace_api_returns_409_with_inflight(self):
+        """前端拿这个 409 直接切到「进行中」,而不是弹个错就完了。"""
+        from rest_framework.test import APIClient
+
+        from apps.accounts.models import TeamMember
+
+        TeamMember.objects.get_or_create(
+            team=self.team, user=self.user, defaults={"role": "owner", "status": "active"}
+        )
+        client = APIClient()
+        client.force_authenticate(self.user)
+        payload = {
+            "replace_mode": "product",
+            "video_asset_id": str(self.video.id),
+            "product_id": str(self.product.id),
+            "model": STANDARD,
+            "aspect_ratio": "9:16",
+            "resolution": "480p",
+            "duration": 4,
+        }
+        first = client.post("/api/ai/video-replace/", payload, format="json")
+        self.assertEqual(first.status_code, 202)
+        again = client.post("/api/ai/video-replace/", payload, format="json")
+        self.assertEqual(again.status_code, 409)
+        self.assertEqual(again.json()["inflight"]["id"], first.json()["task"]["id"])
+
+        listed = client.get("/api/ai/video-replace/").json()
+        self.assertEqual(listed["inflight"]["id"], first.json()["task"]["id"])
+
     def test_missing_digest_model_is_rejected_at_submit(self):
         """提炼模型没配好要当场 400,不能建了任务、等一轮提炼才告诉用户。"""
 
@@ -340,6 +424,26 @@ class SubmitVideoReplaceTests(TestCase):
         self.assertNotIn("三视图", prompt)
         self.assertIn("@目标商品", prompt)
 
+    def test_triview_only_product_still_fills_target_slot(self):
+        """商品只有三视图、没有实拍图时,三视图要顶上来当 @目标商品 ——
+        否则提示词里的 @目标商品 找不到同名 label,火山收到的是一句没有指代的字面量。"""
+        bare = Product.objects.create(team=self.team, created_by=self.user, title="只有三视图")
+        tri = _asset(self.team, self.user, name="三视图.png", preview="http://tos/only-tri.png")
+        tri.metadata = {"product_id": str(bare.id), "view": "three_view"}
+        tri.save(update_fields=["metadata"])
+
+        task = self._submit(product_id=str(bare.id))
+        labels = [ref["label"] for ref in task.request_payload["references"]]
+        self.assertEqual(labels, ["目标商品"])
+
+        task = self._run_digest(task)
+        self.assertEqual(task.status, AITask.Status.SUBMITTED)
+        prompt = task.request_payload["prompt"]
+        self.assertIn("@目标商品", prompt)
+        self.assertNotIn("@目标商品三视图", prompt)   # 没有第二张图就别点名它
+        api_prompt = task.request_payload.get("api_prompt") or ""
+        self.assertNotIn("@目标商品", api_prompt)      # 已被换成火山认的「图片N」
+
     def test_triview_yields_budget_so_refs_never_exceed_nine(self):
         """三视图占一张名额:商品图要让位,否则火山那边超 9 张直接拒。"""
         from apps.ai.video_replace import MAX_IMAGES
@@ -369,10 +473,51 @@ class SubmitVideoReplaceTests(TestCase):
         self.assertEqual(task.request_payload["replace_mode"], "character")
         self.assertEqual(task.request_payload["subject_name"], "薇薇")
 
-    def test_rejects_video_longer_than_15s(self):
-        long_video = _asset(self.team, self.user, kind=Asset.Type.VIDEO, name="长片.mp4", duration_ms=20000)
+    def test_product_accepts_up_to_60s_but_character_still_caps_at_15s(self):
+        """商品复刻的参考视频只喂提炼模型,不发火山 → 放宽到 60 秒;
+        角色复刻仍直传火山,15 秒是火山硬限制,不能跟着放宽。"""
+        portrait = _asset(self.team, self.user, name="模特.png", preview="http://tos/model.png")
+        model = Model.objects.create(team=self.team, name="薇薇", portrait_asset=portrait)
+        mid = _asset(self.team, self.user, kind=Asset.Type.VIDEO, name="半分钟.mp4", duration_ms=30000)
+        long_ok = _asset(self.team, self.user, kind=Asset.Type.VIDEO, name="一分钟.mp4", duration_ms=60000)
+        too_long = _asset(self.team, self.user, kind=Asset.Type.VIDEO, name="超长.mp4", duration_ms=75000)
+
+        # 商品复刻:30s / 60s 都放行。单飞闸只允许一条在跑,所以每次提交后收掉再试下一条。
+        self.assertEqual(self._retire(self._submit(video_asset_id=str(mid.id))).status, AITask.Status.CANCELLED)
+        self.assertEqual(self._retire(self._submit(video_asset_id=str(long_ok.id))).status, AITask.Status.CANCELLED)
+        with self.assertRaisesMessage(ValueError, "不能超过 60 秒"):
+            self._submit(video_asset_id=str(too_long.id))
+
+        # 角色复刻:超过 15 秒仍然拒
         with self.assertRaisesMessage(ValueError, "不能超过 15 秒"):
-            self._submit(video_asset_id=str(long_video.id))
+            self._submit(
+                replace_mode="character", product_id="", model_id=str(model.id),
+                video_asset_id=str(mid.id),
+            )
+
+    def test_long_source_asks_model_to_condense(self):
+        """60 秒参考稿 + 15 秒成片:必须让模型压缩改编,不然会照着拍到一半戛然而止。"""
+        long_video = _asset(self.team, self.user, kind=Asset.Type.VIDEO, name="一分钟.mp4", duration_ms=58000)
+        # duration=None → 按参考视频推导成片时长(火山单次上限 15 秒),与线上一致
+        task = self._run_digest(self._submit(video_asset_id=str(long_video.id), duration=None))
+        prompt = task.request_payload["prompt"]
+        self.assertIn("压缩改编", prompt)
+        self.assertIn("58 秒", prompt)
+        self.assertIn("15 秒", prompt)
+
+    def test_short_source_skips_condense_note(self):
+        """参考视频和成片时长差不多时别啰嗦。"""
+        task = self._run_digest(self._submit(duration=None))   # setUp 的参考视频 8 秒 → 成片也 8 秒
+        self.assertNotIn("压缩改编", task.request_payload["prompt"])
+
+    def test_prompt_always_pins_character_consistency(self):
+        """上传图里可能有人物(服饰模特图/真人手持图),要锁住人物一致;
+        没有人物时也要说清楚「别从商品图凭空套脸」。"""
+        prompt = self._run_digest(self._submit()).request_payload["prompt"]
+        self.assertIn("自始至终是同一个人", prompt)
+        self.assertIn("不要中途换脸", prompt)
+        self.assertIn("参考图里如果有人物", prompt)
+        self.assertIn("不要从商品图上凭空套一张脸", prompt)
 
     def test_accepts_15s_video_with_probe_slack(self):
         from apps.ai.media_probe import REF_DURATION_MAX

core/backend/apps/ai/video_digest.py

@@ -59,6 +59,14 @@ class VideoDigestError(ValueError):
     """用户可见的失败(文件不合格 / ffmpeg 读不动),一律 400。"""
 
 
+class VideoDigestInProgress(VideoDigestError):
+    """本团队已有提炼在跑。视图转 409,并把在跑的那条带回去让前端接上。"""
+
+    def __init__(self, job: dict):
+        super().__init__("已有一个视频正在提炼中，完成或取消后才能再提交")
+        self.job = job
+
+
 @dataclass(frozen=True)
 class VideoFrame:
     at_seconds: int
@@ -923,6 +931,14 @@ def submit_team_digest(*, team, user, upload=None, reuse_task_id=None, model_con
     from apps.billing.pricing import quote_video_digest
     from apps.billing.services.ledger import reserve_credit
 
+    # 单飞闸:一个团队同时只允许一条提炼在跑。
+    # 刷新页面时前端要异步拉状态,这个空档用户很容易以为「没任务」再传一次 —— 前端加载态
+    # 只是治标,真正兜底在这里。先跑过期回收,死任务不会把人永久锁住。
+    expire_stale_team_digests(team=team)
+    running = get_inflight_team_digest(team=team)
+    if running:
+        raise VideoDigestInProgress(running)
+
     model_config = resolve_digest_model_config(preferred_id=model_config_id)
     if model_config is None:
         raise VideoDigestError("视频提炼需要 Gemini 3.1 Pro(会看图),当前没有启用,请联系管理员")
@@ -1359,6 +1375,9 @@ def digest_asset_video(*, asset, task, model_config_id=None) -> tuple[str, dict]
     复刻本来就是一次收费,拆解是它的内部工序。模型调用的审计仍记在传入的复刻
     task 上(AIModelAttempt),出问题查得到。
     """
+    import time
+
+    from apps.ai.models import AIModelAttempt
     from apps.ai.services import _collect_extract_text, get_text_provider
 
     primary = asset.files.filter(is_primary=True).first() or asset.files.first()
@@ -1408,7 +1427,12 @@ def digest_asset_video(*, asset, task, model_config_id=None) -> tuple[str, dict]
         expected_frames = len(frames) or (24 if video else 0)
         digest = ""
         last_error: Exception | None = None
-        for attempt in range(1, DIGEST_MAX_ATTEMPTS + 1):
+        for attempt_no in range(1, DIGEST_MAX_ATTEMPTS + 1):
+            # 这一步不走 execute_model_call(它要求 task.model_config 就是本次主模型,
+            # 而复刻任务的主模型是 Seedance),所以尝试记录得自己落 —— 不落的话
+            # 运营后台的任务详情看不到这次 Gemini 调用,出问题无从查起。
+            record = _open_digest_attempt(task, model_config, attempt_no, duration, expected_frames, video)
+            started = time.monotonic()
             try:
                 text, _payload = _collect_extract_text(
                     provider,
@@ -1418,12 +1442,19 @@ def digest_asset_video(*, asset, task, model_config_id=None) -> tuple[str, dict]
                     extra_body={"max_tokens": DIGEST_MAX_TOKENS},
                 )
                 digest = validate_digest_text(text, duration=duration, frame_count=expected_frames)
+                _close_digest_attempt(
+                    record, AIModelAttempt.Status.SUCCEEDED, started,
+                    summary={"chars": len(digest), "shots": shot_count(digest)},
+                )
                 break
             except Exception as exc:  # noqa: BLE001 — 空文/废稿/网络抖动都值得再来一次
                 last_error = exc
+                _close_digest_attempt(
+                    record, AIModelAttempt.Status.FAILED, started, error=str(exc),
+                )
                 logger.warning(
                     "replace digest attempt %s/%s failed for task %s: %s",
-                    attempt, DIGEST_MAX_ATTEMPTS, task.id, exc,
+                    attempt_no, DIGEST_MAX_ATTEMPTS, task.id, exc,
                 )
         if not digest:
             raise VideoDigestError(f"参考视频拆解失败：{last_error}")
@@ -1439,3 +1470,73 @@ def digest_asset_video(*, asset, task, model_config_id=None) -> tuple[str, dict]
     finally:
         if local_path:
             Path(local_path).unlink(missing_ok=True)
+
+
+def _open_digest_attempt(task, model_config, attempt_no: int, duration: float, frames: int, video):
+    """给复刻任务补一条「提炼」尝试记录,让运营后台的尝试链能看到这次 Gemini 调用。
+
+    审计失败绝不能拖垮拆解本身,所以整段吞异常、返回 None。
+    """
+    from django.db import transaction
+    from django.db.models import Max
+    from django.utils import timezone
+
+    from apps.ai.models import AIModelAttempt, AITask
+
+    try:
+        with transaction.atomic():
+            AITask.objects.select_for_update().only("id").get(pk=task.pk)
+            sequence = (
+                AIModelAttempt.objects.filter(task_id=task.pk).aggregate(m=Max("sequence"))["m"] or 0
+            ) + 1
+            provider = model_config.provider
+            return AIModelAttempt.objects.create(
+                task_id=task.pk,
+                sequence=sequence,
+                provider=provider,
+                model_config=model_config,
+                provider_name=provider.name,
+                provider_display_name=provider.display_name,
+                model_name=model_config.name,
+                model_display_name=model_config.display_name,
+                public_model_name=model_config.display_name or model_config.name,
+                capability="text",
+                operation="video_digest",
+                status=AIModelAttempt.Status.STARTED,
+                is_retry=attempt_no > 1,
+                started_at=timezone.now(),
+                request_summary={
+                    "for": "video_replace",
+                    "duration_seconds": round(float(duration or 0), 2),
+                    "frame_count": frames,
+                    "input": "native_video" if video is not None else "frames",
+                },
+            )
+    except Exception:  # noqa: BLE001 — 审计写失败不影响出片
+        logger.warning("video replace digest attempt record failed", exc_info=True)
+        return None
+
+
+def _close_digest_attempt(record, status, started_at: float, *, summary: dict | None = None, error: str = ""):
+    import time
+
+    from django.utils import timezone
+
+    if record is None:
+        return
+    try:
+        record.status = status
+        record.finished_at = timezone.now()
+        record.duration_ms = max(0, round((time.monotonic() - started_at) * 1000))
+        if summary:
+            record.response_summary = summary
+        if error:
+            record.error_type = "processing_failed"
+            record.raw_error = error[:2000]
+            record.safe_error_summary = "参考视频拆解未通过校验"
+        record.save(update_fields=[
+            "status", "finished_at", "duration_ms", "response_summary",
+            "error_type", "raw_error", "safe_error_summary", "updated_at",
+        ])
+    except Exception:  # noqa: BLE001
+        logger.warning("video replace digest attempt close failed", exc_info=True)

core/backend/apps/ai/video_replace.py

@@ -43,10 +43,38 @@ LEGACY_PROMPT_PREFIX = "[视频复刻]"
 # 商品三视图在商品库是 standalone Asset(metadata.view=three_view + product_id),
 # 和项目内的 BaseAssetGroup 是两套存储,这里直接取商品库那份。
 TRIVIEW_LABEL = "目标商品三视图"
+# 商品复刻的参考视频不进火山、只喂提炼模型,所以不受火山 15 秒参考视频限制。
+# 半秒容差同 media_probe 的老规矩(60 秒成片常被探成 60.02)。角色复刻仍是 15 秒。
+PRODUCT_REF_DURATION_MAX = 60.5
 REVIEW_UNAVAILABLE = "素材审核服务暂不可用，请稍后重试"
 REVIEW_FAILED = "参考素材未通过真人合规审核，请更换视频或图片后重试"
 REVIEW_SUBMIT_FAILED = "素材提交审核失败，请稍后重试"
 
+
+class VideoReplaceInProgress(ValueError):
+    """本团队已有复刻在跑。视图转 409,并把在跑的那条带回去让前端接上。"""
+
+    def __init__(self, task):
+        super().__init__("已有一个视频正在复刻中，完成或取消后才能再提交")
+        self.task = task
+
+
+def get_inflight_video_replace(team):
+    """本团队正在跑的复刻任务(含审核中 / 提炼中)。没有返回 None。"""
+    _reap_stale_free_video_tasks(team=team)
+    return (
+        AITask.objects.filter(
+            team=team,
+            task_type=AITask.Type.FREE_VIDEO,
+            status__in=IN_FLIGHT_STATUSES,
+            is_deleted=False,
+            purged_at__isnull=True,
+        )
+        .filter(video_replace_q())
+        .order_by("-created_at")
+        .first()
+    )
+
 # 商品复刻不再把参考视频直接丢给火山(实测换不动商品,出片跑偏),改走两步:
 # 先用「提炼提示词」那一整套(同一份 SKILL.md + 同一个 Gemini 3.1 Pro)把参考视频拆成
 # 中文分镜稿,再把分镜稿当导演脚本、连同商品图一起交给 Seedance。
@@ -62,8 +90,22 @@ PRODUCT_DIGEST_TAIL = (
     "不要改造型、不要改配色、不要凭空补细节。\n"
     "{triview}"
     "3. 人物、场景、光线、色调、动作和表情按分镜稿保持不变，只换商品。\n"
+    "   · 全片的人物必须自始至终是同一个人：五官、发型、体态和服装在所有镜头里保持一致，"
+    "不要中途换脸、换人或换装。\n"
+    "   · 参考图里如果有人物（例如服饰类的模特图、真人手持商品的图），画面中的人物就以那张参考图为准，"
+    "五官、发型、体态和服装必须与之一致；参考图里只有商品、没有人物时，就按分镜稿描述的人物去演，"
+    "不要从商品图上凭空套一张脸。\n"
     "4. 台词/旁白按分镜稿逐字念出；原文提到旧商品名称的地方，改说「{subject}」。\n"
     "5. 分镜稿里的「字幕」栏只是对原片的记录，不要把这些文字画到画面上。"
+    "{condense}"
+)
+
+# 参考视频比成片长时才追加(火山单次出片上限 15 秒,60 秒参考稿必须压缩改编,
+# 否则模型会照着分镜稿从头拍、拍到 15 秒戛然而止)。
+PRODUCT_CONDENSE_NOTE = (
+    "\n6. 参考视频约 {source} 秒，而本次成片只有 {output} 秒：请按分镜稿的结构和节奏**压缩改编**，"
+    "保留主线、最关键的卖点镜头和结尾收束，可以合并或省略次要镜头；"
+    "不要只拍开头几镜就停，也不要把画面加速成快放。"
 )
 # 商品库里有三视图时才追加这一条(没有就不提,免得模型去找一张不存在的图)。
 PRODUCT_TRIVIEW_NOTE = (
@@ -107,7 +149,14 @@ def compact_digest_for_video(digest_text: str) -> str:
     return "\n".join(line for line in lines if line.strip()).strip()
 
 
-def build_product_replace_prompt(digest_text: str, subject_name: str, *, has_triview: bool = False) -> str:
+def build_product_replace_prompt(
+    digest_text: str,
+    subject_name: str,
+    *,
+    has_triview: bool = False,
+    source_seconds: float = 0,
+    output_seconds: int = 0,
+) -> str:
     """分镜稿 + 商品替换要求 → 交给 Seedance 的完整提示词。
 
     @目标商品 必须与 references 里第一张商品图的 label 对上,否则 build_content_items
@@ -119,9 +168,18 @@ def build_product_replace_prompt(digest_text: str, subject_name: str, *, has_tri
     if not body:
         raise ValueError("参考视频拆解结果为空，请重试")
     subject = (subject_name or "").strip() or "目标商品"
+    source = int(round(float(source_seconds or 0)))
+    output = int(output_seconds or 0)
+    # 差 3 秒以内不啰嗦,模型自己会收;差得多才明确要求压缩改编。
+    condense = (
+        PRODUCT_CONDENSE_NOTE.format(source=source, output=output)
+        if source and output and source - output >= 3
+        else ""
+    )
     tail = PRODUCT_DIGEST_TAIL.format(
         subject=subject,
         triview=PRODUCT_TRIVIEW_NOTE if has_triview else "",
+        condense=condense,
     )
     return enforce_no_embedded_captions(f"{PRODUCT_DIGEST_HEAD}\n\n{body}\n\n{tail}")
 
@@ -190,9 +248,20 @@ def submit_video_replace(*, team, user, params: dict):
         if not has_model and not has_temp:
             raise ValueError("请选择角色或上传角色参考图")
 
+    # 单飞闸:一个团队同时只允许一条复刻在跑。刷新页面时前端拉状态有空档,
+    # 用户容易以为「没任务」再点一次,重复扣费。_reap_stale_free_video_tasks 会先回收
+    # 死任务(CREATED 超 16 分钟等),所以不会被永久锁住。
+    running = get_inflight_video_replace(team)
+    if running is not None:
+        raise VideoReplaceInProgress(running)
+
     video = _team_asset(team, params.get("video_asset_id"), kind=Asset.Type.VIDEO, label="参考视频")
     video_seconds = _asset_duration_seconds(video)
-    if video_seconds > REF_DURATION_MAX:
+    if replace_mode == "product":
+        if video_seconds > PRODUCT_REF_DURATION_MAX:
+            raise ValueError("参考视频不能超过 60 秒，请剪短后重试")
+    elif video_seconds > REF_DURATION_MAX:
+        # 角色复刻把参考视频直传火山,15 秒是火山那边的硬限制,不能跟着放宽。
         raise ValueError("参考视频不能超过 15 秒，请剪短后重试")
 
     if has_product:
@@ -345,7 +414,11 @@ def run_replace_digest(task) -> None:
             (ref or {}).get("label") == TRIVIEW_LABEL for ref in (payload.get("references") or [])
         )
         prompt = build_product_replace_prompt(
-            digest, str(payload.get("subject_name") or ""), has_triview=has_triview
+            digest,
+            str(payload.get("subject_name") or ""),
+            has_triview=has_triview,
+            source_seconds=float(payload.get("digest_source_duration") or 0),
+            output_seconds=int(payload.get("duration") or 0),
         )
     except (VideoDigestError, ValueError) as exc:
         _fail_reviewing_task(task, str(exc), error_code="processing_failed")
@@ -776,10 +849,15 @@ def _product_library_refs(team, product_id: uuid.UUID) -> tuple[str, list, str]:
         assets.append(asset)
         if len(assets) >= image_budget:
             break
-    if not assets and product.cover_asset_id and not product.cover_asset.is_deleted:
+    if not assets and product.cover_asset_id and product.cover_asset_id not in seen and not product.cover_asset.is_deleted:
         assets.append(product.cover_asset)
-    if not assets and triview is None:
-        raise ValueError("这个商品还没有可用图片")
+    if not assets:
+        # 只有三视图、没有任何实拍图时,把三视图顶上来当 @目标商品。
+        # 否则提示词里的 @目标商品 找不到同名 label,火山拿到的是一句没有指代的字面量。
+        if triview is None:
+            raise ValueError("这个商品还没有可用图片")
+        assets = [triview]
+        triview = None
     refs = [_library_image_ref(asset, team=team, label="目标商品" if index == 0 else f"目标商品{index + 1}") for index, asset in enumerate(assets)]
     if triview is not None:
         # 放最后:@目标商品 仍指向第一张实拍图,三视图作为「各面长什么样」的补充证据。

core/backend/apps/ai/views.py

@@ -728,7 +728,7 @@ class VideoDigestView(APIView):
         if upload is None and not reuse_task_id:
             return Response({"detail": "请先上传参考视频"}, status=status.HTTP_400_BAD_REQUEST)
         require_worker_task("apps.ai.tasks.run_video_digest_task")
-        from .video_digest import VideoDigestError, submit_team_digest
+        from .video_digest import VideoDigestError, VideoDigestInProgress, submit_team_digest
 
         team = get_current_team(request.user)
         try:
@@ -739,6 +739,9 @@ class VideoDigestView(APIView):
                 reuse_task_id=reuse_task_id,
                 model_config_id=request.data.get("model_config_id") or None,
             )
+        except VideoDigestInProgress as exc:
+            # 409 + 在跑的那条:前端据此直接切到进行中状态,而不是弹个错就完了
+            return Response({"detail": str(exc), "inflight": exc.job}, status=status.HTTP_409_CONFLICT)
         except VideoDigestError as exc:
             return Response({"detail": str(exc)}, status=status.HTTP_400_BAD_REQUEST)
         except Exception as exc:  # noqa: BLE001 — 模型/网络失败:走统一安全文案
@@ -866,11 +869,21 @@ class VideoReplaceView(APIView):
         # 商品复刻的拆解在 worker 里跑;worker 还是旧镜像的话消息会被静默丢弃 → 永久「提炼中」。
         if str((request.data or {}).get("replace_mode") or "") == "product":
             require_worker_task("apps.ai.tasks.run_video_replace_digest_task")
-        from .video_replace import serialize_video_replace_task, submit_video_replace
+        from .video_replace import (
+            VideoReplaceInProgress,
+            serialize_video_replace_task,
+            submit_video_replace,
+        )
 
         team = get_current_team(request.user)
         try:
             task = submit_video_replace(team=team, user=request.user, params=request.data or {})
+        except VideoReplaceInProgress as exc:
+            # 409 + 在跑的那条:前端据此直接切到进行中状态,而不是弹个错就完了
+            return Response(
+                {"detail": str(exc), "inflight": serialize_video_replace_task(exc.task)},
+                status=status.HTTP_409_CONFLICT,
+            )
         except ValueError as exc:
             message = str(exc)
             internal_kind = (
@@ -906,11 +919,16 @@ class VideoReplaceView(APIView):
         qs = _free_video_list_queryset(team, include_replace=True).order_by("-created_at")
         total = qs.count()
         tasks = list(qs[offset : offset + page_size])
+        from .video_replace import get_inflight_video_replace
+
+        running = get_inflight_video_replace(team) if offset == 0 else None
         return Response(
             {
                 "results": [serialize_video_replace_task(t) for t in tasks],
                 "total": total,
                 "has_more": offset + page_size < total,
+                # 首页才带:前端刷新后据此恢复「进行中」,不必自己在列表里翻状态
+                "inflight": serialize_video_replace_task(running) if running is not None else None,
             }
         )
 
@@ -1059,6 +1077,13 @@ _FREE_REF_VIDEO_TYPES = {"video/mp4", "video/quicktime"}
 _FREE_REF_AUDIO_TYPES = {"audio/mpeg", "audio/wav", "audio/x-wav", "audio/wave"}
 _FREE_REF_IMAGE_MAX = 30 * 1024 * 1024
 _FREE_REF_VIDEO_MAX = 50 * 1024 * 1024
+# 视频复刻·商品:参考视频只喂给提炼模型(不发火山),没有 15 秒的硬限制,
+# 按「提炼提示词」页那套放宽到 60 秒 / 200MB。自由创作和角色复刻仍走上面的 15 秒。
+# 拿这个 purpose 传上来的长视频,若被拿去自由创作/角色复刻,下游 build_content_items
+# 与 submit_video_replace 各自还有 15 秒校验兜底,越不过去。
+_REPLACE_SOURCE_PURPOSE = "video_replace_product"
+_REPLACE_SOURCE_VIDEO_MAX = 200 * 1024 * 1024
+_REPLACE_SOURCE_DURATION_MAX = 60.5
 _FREE_REF_AUDIO_MAX = 15 * 1024 * 1024
 
 
@@ -1088,6 +1113,7 @@ class FreeVideoUploadView(APIView):
         team = get_current_team(request.user)
         content_type = (upload.content_type or "").lower()
         size = upload.size or 0
+        long_source = str(request.data.get("purpose") or "").strip() == _REPLACE_SOURCE_PURPOSE
 
         if content_type in _FREE_REF_IMAGE_TYPES:
             kind, asset_type, suffix = "image", Asset.Type.IMAGE, {"image/jpeg": ".jpg", "image/png": ".png", "image/webp": ".webp"}[content_type]
@@ -1095,8 +1121,12 @@ class FreeVideoUploadView(APIView):
                 return Response({"detail": "图片大小不能超过 30MB"}, status=status.HTTP_400_BAD_REQUEST)
         elif content_type in _FREE_REF_VIDEO_TYPES:
             kind, asset_type, suffix = "video", Asset.Type.VIDEO, ".mp4" if content_type == "video/mp4" else ".mov"
-            if size > _FREE_REF_VIDEO_MAX:
-                return Response({"detail": "视频大小不能超过 50MB"}, status=status.HTTP_400_BAD_REQUEST)
+            video_max = _REPLACE_SOURCE_VIDEO_MAX if long_source else _FREE_REF_VIDEO_MAX
+            if size > video_max:
+                return Response(
+                    {"detail": f"视频大小不能超过 {video_max // 1024 // 1024}MB"},
+                    status=status.HTTP_400_BAD_REQUEST,
+                )
         elif content_type in _FREE_REF_AUDIO_TYPES:
             kind, asset_type, suffix = "audio", Asset.Type.AUDIO, ".mp3" if content_type == "audio/mpeg" else ".wav"
             if size > _FREE_REF_AUDIO_MAX:
@@ -1132,9 +1162,16 @@ class FreeVideoUploadView(APIView):
                 duration = probe_duration(str(tmp_path))
                 if duration is None:
                     return Response({"detail": "媒体文件解析失败，请更换文件"}, status=status.HTTP_400_BAD_REQUEST)
-                if not duration_in_ref_range(duration):
-                    label = "视频" if kind == "video" else "音频"
-                    return Response({"detail": f"{label}时长需在 2-15 秒之间"}, status=status.HTTP_400_BAD_REQUEST)
+                from .media_probe import REF_DURATION_MIN
+
+                if long_source and kind == "video":
+                    in_range = REF_DURATION_MIN <= duration <= _REPLACE_SOURCE_DURATION_MAX
+                    range_hint = "视频时长需在 2-60 秒之间"
+                else:
+                    in_range = duration_in_ref_range(duration)
+                    range_hint = f"{'视频' if kind == 'video' else '音频'}时长需在 2-15 秒之间"
+                if not in_range:
+                    return Response({"detail": range_hint}, status=status.HTTP_400_BAD_REQUEST)
                 if kind == "video":
                     poster_bytes = extract_video_poster(str(tmp_path))
 

core/backend/apps/products/serializers.py

@@ -36,6 +36,7 @@ class ProductSerializer(serializers.ModelSerializer):
     images = ProductImageSerializer(many=True, required=False)
     selling_points = ProductSellingPointSerializer(many=True, required=False)
     cover_preview_url = serializers.SerializerMethodField()
+    triview_preview_url = serializers.SerializerMethodField()
 
     class Meta:
         model = Product
@@ -51,6 +52,7 @@ class ProductSerializer(serializers.ModelSerializer):
             "status",
             "cover_asset",
             "cover_preview_url",
+            "triview_preview_url",
             "images",
             "selling_points",
             "created_at",
@@ -61,6 +63,24 @@ class ProductSerializer(serializers.ModelSerializer):
     def get_cover_preview_url(self, obj) -> str:
         return _asset_preview_url(obj.cover_asset)
 
+    def get_triview_preview_url(self, obj) -> str:
+        """商品三视图(白底多角度单张 16:9)。商品库存的是 standalone Asset,不在 images 里,
+        视频复刻要靠它锁商品各面,前端也要能直接告诉用户「这次带了三视图」。"""
+        from apps.assets.models import Asset
+
+        asset = (
+            Asset.objects.filter(
+                team_id=obj.team_id,
+                is_deleted=False,
+                purged_at__isnull=True,
+                metadata__product_id=str(obj.id),
+                metadata__view="three_view",
+            )
+            .order_by("-created_at")
+            .first()
+        )
+        return _asset_preview_url(asset) if asset else ""
+
     def validate(self, attrs):
         # 创建商品必须至少有一张图:无图商品会让下游"商品参考图"彻底落空,故事板/视频退化纯文生图。
         # 例外:本地生活团购是虚拟商品(无实物),允许不传主图,沿用主流程 SOP。

core/backend/apps/products/tests.py

@@ -242,3 +242,43 @@ class ProductBusinessTypeTests(TestCase):
         self.assertIn("火锅套餐", local)
         self.assertNotIn("面膜", local)
 
+
+
+class ProductTriviewFieldTests(TestCase):
+    """商品三视图是 standalone Asset(metadata.view=three_view + product_id),不在 images 里。
+    视频复刻靠它锁商品各面,前端也要能直接告诉用户「这次带了三视图」。"""
+
+    def setUp(self):
+        self.user = User.objects.create_user(username="ptri", password="p")
+        self.team = Team.objects.create(name="PT", owner=self.user)
+        TeamMember.objects.create(team=self.team, user=self.user, role="owner", status="active")
+        self.client = APIClient()
+        self.client.force_authenticate(self.user)
+        self.product = Product.objects.create(team=self.team, created_by=self.user, title="净颜精华")
+
+    def _asset(self, name, preview, metadata=None):
+        asset = Asset.objects.create(
+            team=self.team, created_by=self.user, name=name,
+            asset_type=Asset.Type.IMAGE, source=Asset.Source.AI_GENERATED,
+            category=Asset.Category.UPLOAD, metadata=metadata or {},
+        )
+        AssetFile.objects.create(
+            asset=asset, object_key="k/1", bucket="b", content_type="image/png",
+            size_bytes=1, preview_url=preview, is_primary=True,
+        )
+        return asset
+
+    def test_triview_url_exposed_when_present(self):
+        self._asset("三视图", "http://tos/tri.png", {"product_id": str(self.product.id), "view": "three_view"})
+        data = self.client.get(f"/api/products/{self.product.id}/").json()
+        self.assertEqual(data["triview_preview_url"], "http://tos/tri.png")
+
+    def test_blank_when_no_triview(self):
+        data = self.client.get(f"/api/products/{self.product.id}/").json()
+        self.assertEqual(data["triview_preview_url"], "")
+
+    def test_other_products_triview_does_not_leak(self):
+        other = Product.objects.create(team=self.team, created_by=self.user, title="别的商品")
+        self._asset("三视图", "http://tos/other.png", {"product_id": str(other.id), "view": "three_view"})
+        data = self.client.get(f"/api/products/{self.product.id}/").json()
+        self.assertEqual(data["triview_preview_url"], "")

core/backend/apps/projects/services/quick_create.py

@@ -259,6 +259,29 @@ def _should_mark_project_failed(job: QuickCreateJob) -> bool:
     return True
 
 
+# 编排器活着时会不断推进并保存 job(updated_at 跟着动)。超过这个时长没动过,
+# 基本就是 worker 挂了 —— 不当它在跑,否则一次抽风会把团队永久锁在"有任务进行中"。
+QUICK_CREATE_STALE_AFTER = timedelta(minutes=30)
+
+
+def get_inflight_quick_create(team):
+    """本团队正在跑的一键成片。没有 / 已经僵死的返回 None。"""
+    from django.utils import timezone
+
+    return (
+        QuickCreateJob.objects.select_related("project")
+        .filter(
+            team=team,
+            status__in=(QuickCreateJob.Status.QUEUED, QuickCreateJob.Status.RUNNING),
+            project__is_deleted=False,
+            project__purged_at__isnull=True,
+            updated_at__gte=timezone.now() - QUICK_CREATE_STALE_AFTER,
+        )
+        .order_by("-created_at")
+        .first()
+    )
+
+
 def restore_false_failed_quick_creates(team) -> None:
     jobs = (
         QuickCreateJob.objects.select_related("project")

core/backend/apps/projects/test_quick_create.py

@@ -111,6 +111,55 @@ class QuickCreateApiTests(TestCase):
             {str(image.asset_id) for image in product.images.order_by("sort_order")},
         )
 
+    @patch("apps.projects.services.quick_create.get_quick_script_model", return_value=object())
+    @patch("apps.projects.views.get_default_model")
+    @patch("apps.projects.tasks.advance_quick_create_task.apply_async")
+    @patch("apps.projects.views.require_worker_task")
+    @patch("apps.projects.views._store_uploaded_asset")
+    def test_second_submit_is_blocked_while_one_is_running(self, store_asset, require_worker_task, enqueue, get_model, get_quick_model):
+        """刷新页面时前端拉状态有空档,用户容易以为「没任务」再提交一次 ——
+        那会重复建商品、重复扣费。后端必须拦住,并把在跑的那条带回去。"""
+        store_asset.side_effect = self._uploaded_asset
+        video_model = SimpleNamespace(
+            id=uuid.uuid4(),
+            name="doubao-seedance-2-0-fast-260128",
+            display_name="Seedance 2.0 Fast",
+            metadata={"capabilities": {"resolutions": ["480p", "720p"], "aspect_ratios": ["9:16"], "durations": [15]}},
+        )
+        get_model.side_effect = [object(), video_model, object(), video_model]
+
+        def _post():
+            return self.client.post(
+                "/api/projects/quick-create/",
+                {
+                    "name": "轻醒咖啡",
+                    "images": [SimpleUploadedFile("front.png", b"png-one", content_type="image/png")],
+                    "aspect_ratio": "9:16",
+                    "resolution": "720p",
+                    "total_duration": "15",
+                    "category": "食品饮料",
+                },
+            )
+
+        first = _post()
+        self.assertEqual(first.status_code, 202)
+        job_id = str(QuickCreateJob.objects.get(project__product__title="轻醒咖啡").id)
+
+        again = _post()
+        self.assertEqual(again.status_code, 409)
+        self.assertIn("完成或取消后", again.json()["detail"])
+        self.assertEqual(again.json()["inflight"]["id"], job_id)
+
+        # 历史接口也要把在跑的那条带出来,前端刷新后才能恢复进度
+        listed = self.client.get("/api/projects/quick-create-history/").json()
+        self.assertEqual(listed["inflight"]["id"], job_id)
+
+        # 收成终态后放行
+        QuickCreateJob.objects.filter(id=job_id).update(status=QuickCreateJob.Status.CANCELLED)
+        from apps.projects.services.quick_create import get_inflight_quick_create
+
+        self.assertIsNone(get_inflight_quick_create(self.team))
+
     @patch("apps.projects.services.quick_create.get_quick_script_model", return_value=object())
     @patch("apps.projects.views.get_default_model")
     @patch("apps.projects.tasks.advance_quick_create_task.apply_async")

core/backend/apps/projects/views.py

@@ -485,6 +485,20 @@ class ProjectViewSet(TeamScopedViewSetMixin, ModelViewSet):
     def quick_create(self, request):
         """商品名称 + 1–9 张图 → 新建商品与项目，并启动完整自动生产流水线。"""
         require_worker_task("apps.projects.tasks.advance_quick_create_task")
+        # 单飞闸:一个团队同时只允许一条一键成片。刷新页面时前端拉状态有空档,
+        # 用户容易以为「没任务」再提交一次 —— 那会重复建商品、重复扣费。
+        # get_inflight_quick_create 会跳过 30 分钟没动过的僵尸 job,不至于把人永久锁住。
+        from .services.quick_create import get_inflight_quick_create
+
+        running_job = get_inflight_quick_create(self.get_team())
+        if running_job is not None:
+            return Response(
+                {
+                    "detail": "已有一个一键成片正在进行中，完成或取消后才能再提交",
+                    "inflight": QuickCreateJobSerializer(running_job).data,
+                },
+                status=status.HTTP_409_CONFLICT,
+            )
         name = str(request.data.get("name") or "").strip()
         uploads = request.FILES.getlist("images") or request.FILES.getlist("images[]")
         source_product_id = str(request.data.get("source_product_id") or "").strip()
@@ -775,9 +789,14 @@ class ProjectViewSet(TeamScopedViewSetMixin, ModelViewSet):
             )
             .order_by("-created_at")
         )
+        from .services.quick_create import get_inflight_quick_create
+
+        running = get_inflight_quick_create(self.get_team())
         return Response({
             "count": jobs.count(),
             "results": QuickCreateJobSerializer(jobs[:30], many=True).data,
+            # 进行中的那条:前端刷新/重进页面据此恢复进度,不再显示成空表单
+            "inflight": QuickCreateJobSerializer(running).data if running is not None else None,
         })
 
     @transaction.atomic

core/frontend/src/ai-tools-page.css

@@ -3456,3 +3456,10 @@
   .yz-image .result-panel { height: auto; min-height: 420px; }
   .yz-image .studio-layout { grid-template-columns: 1fr; height: auto; }
 }
+
+/* 参考图可直接拖进输入区 */
+.yz-image .image-composer.is-dragover {
+  outline: 1.5px dashed var(--heat);
+  outline-offset: 4px;
+  border-radius: var(--r-md, 8px);
+}

core/frontend/src/api.ts

@@ -127,11 +127,14 @@ export function setRemember(username: string | null, remember: boolean) {
 
 export class ApiError extends Error {
   status: number;
+  /** 解析成功的响应体。409 这类「冲突」要把在跑的任务带回给调用方接上,只有 message 不够用。 */
+  payload?: Record<string, unknown>;
 
-  constructor(status: number, message: string) {
+  constructor(status: number, message: string, payload?: Record<string, unknown>) {
     super(message);
     this.name = "ApiError";
     this.status = status;
+    this.payload = payload;
   }
 }
 
@@ -169,8 +172,10 @@ async function request<T>(path: string, options: RequestInit = {}): Promise<T> {
     const text = await response.text();
     // DRF 错误体是 JSON({"detail": "..."} 或 {field: ["..."]}),提取人话给 toast,别把原始 JSON 怼到用户脸上
     let message = text || `${response.status} ${response.statusText}`;
+    let payload: Record<string, unknown> | undefined;
     try {
       const data = JSON.parse(text) as Record<string, unknown>;
+      payload = data;
       const first = data.detail ?? data.error ?? data.message ?? Object.values(data)[0];
       if (typeof first === "string") message = first;
       else if (Array.isArray(first) && typeof first[0] === "string") message = first[0];
@@ -191,7 +196,7 @@ async function request<T>(path: string, options: RequestInit = {}): Promise<T> {
     if (response.status === 413) {
       message = "文件太大,服务器没接收。视频请压到 200MB 以内再传";
     }
-    throw new ApiError(response.status, message);
+    throw new ApiError(response.status, message, payload);
   }
   if (response.status === 204) return undefined as T;
   return response.json() as Promise<T>;
@@ -379,7 +384,10 @@ export const api = {
     return request<QuickCreateJob>(`/api/projects/quick-create-retry/${jobId}/`, { method: "POST" });
   },
   quickCreateHistory() {
-    return request<{ count: number; results: QuickCreateJob[] }>("/api/projects/quick-create-history/");
+    // inflight = 正在跑的那条:刷新/重进页面据此恢复进度,不再显示成空表单
+    return request<{ count: number; results: QuickCreateJob[]; inflight?: QuickCreateJob | null }>(
+      "/api/projects/quick-create-history/"
+    );
   },
   // 整体替换 metadata —— 调用方务必先展开现有 project.metadata 再合并,别把别的 key 冲掉
   updateProject(id: string, payload: { name?: string; metadata?: Record<string, unknown> }) {
@@ -932,7 +940,8 @@ export const api = {
     return request<{ task: FreeVideoTask }>("/api/ai/video-replace/", { method: "POST", body: JSON.stringify(payload) });
   },
   videoReplaceTasks(offset = 0, pageSize = 20) {
-    return request<{ results: FreeVideoTask[]; total: number; has_more: boolean }>(
+    // inflight 只在首页返回:刷新/重进页面据此恢复「进行中」,不用自己在列表里翻状态
+    return request<{ results: FreeVideoTask[]; total: number; has_more: boolean; inflight?: FreeVideoTask | null }>(
       `/api/ai/video-replace/?offset=${offset}&page_size=${pageSize}`
     );
   },

core/frontend/src/components/free-create/asset-library-modal.tsx

@@ -5,6 +5,7 @@ import { useCallback, useEffect, useRef, useState } from "react";
 import { createPortal } from "react-dom";
 import { Check, ChevronLeft, FolderPlus, Pencil, Trash2, Upload, Users, X } from "lucide-react";
 import { api } from "../../api";
+import { useFileDrop } from "../use-file-drop";
 import type { FreeAssetGroup, FreeAssetItem, FreeVideoRef } from "../../types";
 import { useBodyScrollLock } from "../overlays";
 
@@ -131,6 +132,17 @@ export function AssetLibraryModal({ open, onClose, onPick, notify }: {
     }
   };
 
+  // 素材库弹窗:整块 body 都能接住拖进来的文件。在组内传素材,在组外快速建图。
+  const libDrop = useFileDrop(
+    (files) => {
+      const file = files[0];
+      if (!file) return;
+      if (activeGroup) void uploadAsset(file);
+      else void quickUploadImage(file);
+    },
+    { disabled: uploading }
+  );
+
   const quickUploadImage = async (file: File) => {
     setQuickUploading(true);
     try {
@@ -278,7 +290,11 @@ export function AssetLibraryModal({ open, onClose, onPick, notify }: {
           </div>
           <button className="x modal-x" type="button" onClick={onClose} aria-label="关闭"><X size={14} /></button>
         </div>
-        <div className="modal-b fc-lib-body" onClick={() => { setConfirmDeleteAssetId(null); setConfirmDeleteGroupId(null); }}>
+        <div
+          className={`modal-b fc-lib-body${libDrop.dragging ? " is-dragover" : ""}`}
+          {...libDrop.dropProps}
+          onClick={() => { setConfirmDeleteAssetId(null); setConfirmDeleteGroupId(null); }}
+        >
           {!activeGroup ? (
             <>
               <div className="fc-lib-toolbar">

core/frontend/src/components/free-create/constants.ts

@@ -137,7 +137,7 @@ function probeImage(file: File): Promise<FileCheck> {
   });
 }
 
-function probeMedia(file: File, kind: "video" | "audio"): Promise<FileCheck> {
+function probeMedia(file: File, kind: "video" | "audio", maxSeconds = MAX_VIDEO_TOTAL_SECONDS): Promise<FileCheck> {
   return new Promise((resolve) => {
     const url = URL.createObjectURL(file);
     const el = document.createElement(kind);
@@ -146,24 +146,34 @@ function probeMedia(file: File, kind: "video" | "audio"): Promise<FileCheck> {
       URL.revokeObjectURL(url);
       const duration = el.duration;
       if (!isFinite(duration)) resolve({ ok: true, type: kind });
-      else if (duration < 2 - 0.05 || duration > MAX_VIDEO_TOTAL_SECONDS + VIDEO_DURATION_SLACK) {
-        resolve({ ok: false, error: `${kind === "video" ? "视频" : "音频"}时长需在 2-15 秒之间` });
-      } else resolve({ ok: true, type: kind, duration: Math.min(MAX_VIDEO_TOTAL_SECONDS, Math.round(duration * 10) / 10) });
+      else if (duration < 2 - 0.05 || duration > maxSeconds + VIDEO_DURATION_SLACK) {
+        resolve({ ok: false, error: `${kind === "video" ? "视频" : "音频"}时长需在 2-${maxSeconds} 秒之间` });
+      } else resolve({ ok: true, type: kind, duration: Math.min(maxSeconds, Math.round(duration * 10) / 10) });
     };
     el.onerror = () => { URL.revokeObjectURL(url); resolve({ ok: false, error: "媒体文件解析失败,请更换文件" }); };
     el.src = url;
   });
 }
 
-export async function checkRefFile(file: File): Promise<FileCheck> {
+/** 参考素材前置校验。
+ *  默认按自由创作那套(15 秒 / 50MB)——参考视频要直传火山,是火山的硬限制。
+ *  视频复刻·商品这类「视频只喂给提炼模型、不进火山」的入口,用 options 放宽。 */
+export async function checkRefFile(
+  file: File,
+  options?: { maxSeconds?: number; maxVideoBytes?: number }
+): Promise<FileCheck> {
   const type = (file.type || "").toLowerCase();
+  const maxSeconds = options?.maxSeconds ?? MAX_VIDEO_TOTAL_SECONDS;
+  const maxVideoBytes = options?.maxVideoBytes ?? VIDEO_MAX_BYTES;
   if (IMAGE_TYPES.includes(type)) {
     if (file.size > IMAGE_MAX_BYTES) return { ok: false, error: "图片大小不能超过 30MB" };
     return probeImage(file);
   }
   if (VIDEO_TYPES.includes(type)) {
-    if (file.size > VIDEO_MAX_BYTES) return { ok: false, error: "视频大小不能超过 50MB" };
-    return probeMedia(file, "video");
+    if (file.size > maxVideoBytes) {
+      return { ok: false, error: `视频大小不能超过 ${Math.round(maxVideoBytes / 1024 / 1024)}MB` };
+    }
+    return probeMedia(file, "video", maxSeconds);
   }
   if (AUDIO_TYPES.includes(type)) {
     if (file.size > AUDIO_MAX_BYTES) return { ok: false, error: "音频大小不能超过 15MB" };

core/frontend/src/components/model-library.tsx

@@ -2,6 +2,7 @@ import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import { createPortal } from "react-dom";
 import type { CSSProperties } from "react";
 import { api } from "../api";
+import { useFileDrop } from "./use-file-drop";
 import type { Asset, ModelEntity } from "../types";
 import { useBodyScrollLock, MediaLightbox } from "./overlays";
 
@@ -94,6 +95,11 @@ export function ModelLibrary({ open, mode, initialStudio, onClose, onPick, onGen
     } finally { setBusy(false); }
   }
   // 本地上传 → 直接作为选中立绘进右侧栏
+  const candidateDrop = useFileDrop(
+    (files) => { void uploadCandidate(files[0]); },
+    { disabled: busy, accept: (f) => f.type.startsWith("image/") }
+  );
+
   async function uploadCandidate(file?: File | null) {
     if (!file) return;
     setBusy(true);
@@ -156,9 +162,9 @@ export function ModelLibrary({ open, mode, initialStudio, onClose, onPick, onGen
                 ) : (
                   <div className="actorlib-studio-upload">
                     <div className="muted mono" style={{ fontSize: 12, marginBottom: 6, letterSpacing: ".04em" }}>1 上传本地模特形象图 → 右侧命名并保存</div>
-                    <div className="actorlib-drop" role="button" tabIndex={0} onClick={() => fileRef.current?.click()} onKeyDown={(e) => { if (e.key === "Enter" || e.key === " ") { e.preventDefault(); fileRef.current?.click(); } }}>
+                    <div className={`actorlib-drop${candidateDrop.dragging ? " is-dragover" : ""}`} {...candidateDrop.dropProps} role="button" tabIndex={0} onClick={() => fileRef.current?.click()} onKeyDown={(e) => { if (e.key === "Enter" || e.key === " ") { e.preventDefault(); fileRef.current?.click(); } }}>
                       <svg width="28" height="28" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" /><path d="M17 8l-5-5-5 5" /><path d="M12 3v12" /></svg>
-                      <div style={{ marginTop: 10, fontSize: 13 }}>{busy ? "上传中…" : "点击选择本地模特图片上传"}</div>
+                      <div style={{ marginTop: 10, fontSize: 13 }}>{busy ? "上传中…" : candidateDrop.dragging ? "松开即可上传" : "点击或拖拽本地模特图片上传"}</div>
                       <div className="mono" style={{ fontSize: 12, color: "var(--black-alpha-48)", marginTop: 4 }}>JPG / PNG / WEBP</div>
                     </div>
                     <input ref={fileRef} type="file" accept="image/*" style={{ display: "none" }} onChange={(e) => { void uploadCandidate(e.target.files?.[0]); e.currentTarget.value = ""; }} />

core/frontend/src/components/use-file-drop.ts

@@ -0,0 +1,53 @@
+import { useCallback, useRef, useState } from "react";
+
+/** 全站上传区共用的拖拽投放。各页只管拿 dragging 加自己的高亮类,逻辑不再各写一份。 */
+export function useFileDrop(
+  onFiles: (files: File[]) => void,
+  options?: { disabled?: boolean; accept?: (file: File) => boolean }
+) {
+  const [dragging, setDragging] = useState(false);
+  // 拖过子元素时浏览器会连发 dragenter/dragleave,只看 leave 会让高亮疯狂闪。用进出计数兜住。
+  const depth = useRef(0);
+  const disabled = Boolean(options?.disabled);
+  const accept = options?.accept;
+
+  const reset = useCallback(() => {
+    depth.current = 0;
+    setDragging(false);
+  }, []);
+
+  const hasFiles = (event: React.DragEvent) =>
+    Array.from(event.dataTransfer?.types || []).includes("Files");
+
+  const onDragEnter = useCallback((event: React.DragEvent) => {
+    if (disabled || !hasFiles(event)) return;
+    event.preventDefault();
+    depth.current += 1;
+    setDragging(true);
+  }, [disabled]);
+
+  const onDragOver = useCallback((event: React.DragEvent) => {
+    if (disabled || !hasFiles(event)) return;
+    // 不 preventDefault 浏览器会把文件当导航打开,drop 根本不触发
+    event.preventDefault();
+    if (event.dataTransfer) event.dataTransfer.dropEffect = "copy";
+  }, [disabled]);
+
+  const onDragLeave = useCallback((event: React.DragEvent) => {
+    if (disabled) return;
+    event.preventDefault();
+    depth.current = Math.max(0, depth.current - 1);
+    if (depth.current === 0) setDragging(false);
+  }, [disabled]);
+
+  const onDrop = useCallback((event: React.DragEvent) => {
+    if (disabled) return;
+    event.preventDefault();
+    reset();
+    const files = Array.from(event.dataTransfer?.files || []);
+    const picked = accept ? files.filter(accept) : files;
+    if (picked.length) onFiles(picked);
+  }, [disabled, accept, onFiles, reset]);
+
+  return { dragging, dropProps: { onDragEnter, onDragOver, onDragLeave, onDrop } };
+}

core/frontend/src/free-create-page.css

@@ -1052,3 +1052,10 @@
   .fc-player-nav.prev { left: 6px; }
   .fc-player-nav.next { right: 6px; }
 }
+
+/* 素材库弹窗:整块 body 接住拖进来的文件 */
+.fc-lib-body.is-dragover {
+  outline: 1.5px dashed var(--heat);
+  outline-offset: -8px;
+  background: var(--heat-8);
+}

core/frontend/src/models-page.css

@@ -338,3 +338,16 @@
   .model-detail-b { grid-template-columns: 1fr; padding: 20px; }
   .model-detail-left { width: min(100%, 320px); margin: 0 auto; }
 }
+
+/* 拖图进列表即添加模特 */
+.models-page .ml-grid.is-dragover {
+  outline: 1.5px dashed var(--heat);
+  outline-offset: 8px;
+  border-radius: var(--r-md, 8px);
+}
+
+/* 模特详情:拖图替换形象图 */
+.model-detail-portrait.is-dragover {
+  outline: 1.5px solid var(--heat);
+  outline-offset: 2px;
+}

core/frontend/src/pipeline-page.css

@@ -2187,3 +2187,10 @@
 .chat-model-menu.chip-menu .mi.selected .mi-check {
   color: var(--klein) !important;
 }
+
+/* 模特立绘上传区:拖拽投放高亮 */
+.actorlib-drop.is-dragover {
+  border-style: solid;
+  border-color: var(--heat);
+  background: var(--heat-8);
+}

core/frontend/src/product-detail-page.css

@@ -939,3 +939,11 @@
     .task-stats { grid-template-columns: repeat(2, 1fr); }
   }
 }
+
+/* 拖拽投放高亮:实线 + 主橙,和 hover 区分 */
+.img-upload.is-dragover {
+  border-style: solid;
+  border-color: var(--heat);
+  color: var(--heat);
+  background: var(--heat-8);
+}

core/frontend/src/quick-create-page.css

@@ -66,6 +66,18 @@
 .quick-create-page .quick-create-shell.is-generating .quick-form-panel { opacity: .82; }
 .quick-create-page .quick-create-shell.is-generating .quick-form-footer { pointer-events: auto; opacity: 1; }
 .quick-create-page .quick-status-panel { position: relative; display: grid; place-items: center; min-height: 0; padding: 34px; background: radial-gradient(circle at 50% 45%,rgba(0,47,167,.075),transparent 34%),rgba(250,251,253,.88); }.quick-create-page .quick-state { width: min(560px,100%); display: none; }.quick-create-page .quick-state-ready { display: grid; justify-items: center; text-align: center; }
+/* 读取任务状态:确认完之前不给看空表单,左侧整块也不能操作 —— 否则用户以为没任务又提交一次 */
+.quick-create-page .quick-create-shell.is-restoring .quick-state-restoring { display: grid; }
+.quick-create-page .quick-create-shell.is-restoring .quick-state-ready,
+.quick-create-page .quick-create-shell.is-restoring .quick-state-generating,
+.quick-create-page .quick-create-shell.is-restoring .quick-state-complete,
+.quick-create-page .quick-create-shell.is-restoring .quick-state-failed { display: none; }
+.quick-create-page .quick-state-restoring { width: min(460px,100%); justify-items: center; text-align: center; gap: 14px; }
+.quick-create-page .quick-state-restoring h2 { margin: 0; font-size: 23px; }
+.quick-create-page .quick-state-restoring p { margin: 0; color: var(--quick-muted); font-size: 13px; line-height: 1.7; }
+.quick-create-page .quick-restoring-spinner { width: 34px; height: 34px; border-radius: 50%; border: 2px solid rgba(0,47,167,.16); border-top-color: var(--quick-blue); animation: quick-spinner-rotate 0.8s linear infinite; }
+.quick-create-page .quick-form-panel.is-locked { pointer-events: none; opacity: .55; filter: saturate(.85); transition: opacity 160ms ease; }
+
 .quick-create-page .quick-create-shell.is-generating .quick-state-ready,.quick-create-page .quick-create-shell.is-complete .quick-state-ready,.quick-create-page .quick-create-shell.is-failed .quick-state-ready { display: none; }
 .quick-create-page .quick-create-shell.is-generating .quick-state-generating { display: grid; }
 .quick-create-page .quick-create-shell.is-complete .quick-state-complete { display: grid; }
@@ -149,3 +161,10 @@
 @media (max-width: 1400px) { .quick-create-page .quick-create-shell { grid-template-columns: minmax(0,.9fr) minmax(0,1.1fr); }.quick-create-page .quick-form-panel,.quick-create-page .quick-status-panel { padding: 24px; } }
 @media (max-width: 980px) { .quick-create-page { padding-inline: 18px; }.quick-create-page .quick-create-shell { grid-template-columns: 1fr; }.quick-create-page .quick-create-panel { min-height: 620px; }.quick-create-page .quick-result-actions { grid-template-columns: 1fr; } }
 @media (max-width: 620px) { .quick-create-page .quick-parameter-grid { grid-template-columns: 1fr; }.quick-create-page .quick-upload-filled { width: min(100%,240px); grid-template-columns: 1fr; }.quick-create-page .quick-upload-more { min-height: 148px; } }
+
+/* 拖拽投放高亮 */
+.quick-upload.is-dragover {
+  border-style: solid;
+  border-color: var(--heat);
+  background: var(--heat-8);
+}

core/frontend/src/routes/ai-tools.tsx

@@ -29,6 +29,7 @@ import {
 } from "lucide-react";
 import type { AITask, Asset, ImageConversation, ImageConversationTask, ModelConfig, ModelEntity, Product, WorkbenchTask } from "../types";
 import { api } from "../api";
+import { useFileDrop } from "../components/use-file-drop";
 import { imageModelPickerOptions } from "../model-display";
 import { ModelLibrary } from "../components/model-library";
 import { SkeletonRows, SystemLoading } from "../components/loading";
@@ -711,14 +712,19 @@ export function ImageWorkbenchPage({
     // YYX#14:无真封面时回退到按商品名匹配的 mock 图,与商品库一致显图,不再露灰占位
     return p.cover_preview_url || primary?.preview_url || productMockCoverUrl(p.title);
   };
-  function pickReference(event: ChangeEvent<HTMLInputElement>) {
-    const files = Array.from(event.target.files || []);
+  function acceptReferences(files: File[]) {
     if (!files.length) return;
     // 追加到已选(支持多次点 + 累加),逐张生成本地预览;file 留着提交时上传
     setRefImages((prev) => [...prev, ...files.map((f) => ({ name: f.name, url: URL.createObjectURL(f), file: f }))]);
+  }
+
+  function pickReference(event: ChangeEvent<HTMLInputElement>) {
+    acceptReferences(Array.from(event.target.files || []));
     event.target.value = "";
   }
 
+  const refDrop = useFileDrop(acceptReferences, { accept: (f) => f.type.startsWith("image/") });
+
   const imageModels = modelConfigs.filter((model) => model.capability.includes("image"));
   // 团队价格系数(差异化调价):预估所见即所扣;拉不到按标准价 1
   const [priceMultiplier, setPriceMultiplier] = useState(1);
@@ -1741,7 +1747,7 @@ export function ImageWorkbenchPage({
                 </div>
               )}
             </div>
-            <div className="image-composer">
+            <div className={`image-composer${refDrop.dragging ? " is-dragover" : ""}`} {...refDrop.dropProps}>
               <div className="image-composer-main">
                 <div>
                   <button type="button" className="image-reference-button" title="上传参考图" onClick={() => refInputRef.current?.click()}>

core/frontend/src/routes/models.tsx

@@ -3,6 +3,7 @@ import type { ChangeEvent, CSSProperties, KeyboardEvent } from "react";
 import { createPortal } from "react-dom";
 import { Check, RefreshCw, Settings2, Trash2, Upload, User, UserPlus, X } from "lucide-react";
 import { api } from "../api";
+import { useFileDrop } from "../components/use-file-drop";
 import { generationErrorText } from "../generation-error";
 import type { ModelEntity } from "../types";
 import { SystemLoading } from "../components/loading";
@@ -120,6 +121,11 @@ function ModelDetailModal({ model, close, onZoom, onSaved, onNotify, onBillingCh
       setSaving(false);
     }
   }
+  const portraitDrop = useFileDrop(
+    (files) => selectPortrait(files[0]),
+    { disabled: saving, accept: (f) => f.type.startsWith("image/") }
+  );
+
   function selectPortrait(file?: File) {
     if (!file || currentModel.is_official || saving) return;
     clearPendingPortrait();
@@ -203,7 +209,8 @@ function ModelDetailModal({ model, close, onZoom, onSaved, onNotify, onBillingCh
             </div>
             <input ref={portraitFileRef} type="file" accept="image/*" hidden onChange={(event) => { const file = event.target.files?.[0]; event.target.value = ""; selectPortrait(file); }} />
             <div
-              className={`placeholder model-detail-portrait${portraitUrl ? " has-mock-media" : ""}`}
+              className={`placeholder model-detail-portrait${portraitUrl ? " has-mock-media" : ""}${portraitDrop.dragging ? " is-dragover" : ""}`}
+              {...(model.is_official ? {} : portraitDrop.dropProps)}
               style={portraitUrl ? mediaStyle(portraitUrl) : undefined}
               role={portraitUrl ? "button" : undefined}
               tabIndex={portraitUrl ? 0 : undefined}
@@ -307,9 +314,18 @@ export function ModelsPage({ onNotify, onBillingChanged }: {
 
   useEffect(() => { setSelected(new Set()); }, [tab]);
 
+  const modelDrop = useFileDrop(
+    (files) => { void acceptModelFile(files[0]); },
+    { disabled: uploading, accept: (f) => f.type.startsWith("image/") }
+  );
+
   async function onPick(e: ChangeEvent<HTMLInputElement>) {
     const file = e.target.files?.[0];
     e.target.value = "";
+    await acceptModelFile(file);
+  }
+
+  async function acceptModelFile(file?: File | null) {
     if (!file) return;
     setUploading(true);
     try {
@@ -357,7 +373,7 @@ export function ModelsPage({ onNotify, onBillingChanged }: {
           </button>
           <button className="ml-primary" type="button" disabled={uploading} onClick={() => fileRef.current?.click()}>
             <UserPlus />
-            <span>{uploading ? "上传中…" : "添加模特"}</span>
+            <span>{uploading ? "上传中…" : modelDrop.dragging ? "松开即可添加" : "添加模特"}</span>
           </button>
           <input ref={fileRef} type="file" accept="image/*" hidden onChange={onPick} />
         </div>
@@ -388,7 +404,7 @@ export function ModelsPage({ onNotify, onBillingChanged }: {
           <span>点右上「添加模特」上传一张形象图，或在图片/视频流程里生成</span>
         </div>
       ) : (
-        <div className="ml-grid">
+        <div className={`ml-grid${modelDrop.dragging ? " is-dragover" : ""}`} {...modelDrop.dropProps}>
           {items.map((m) => {
             const selectable = !m.is_official;
             const isSelected = selected.has(m.id);

core/frontend/src/routes/pipeline.tsx

@@ -888,9 +888,33 @@ export function PipelinePage(props: {
       delBusy(busyKey);
     }
   }
-  // 流程步骤4 · 生成人物立绘(App 层自动接力三视图)
-  async function genPersonPortrait(prompt: string, label: string | undefined, busyKey: string) {
-    return await genBaseAsset("person", prompt, label, busyKey);
+  // 流程步骤4 · 生成人物立绘 → 出图后自动接力三视图(用户不必再进详情弹窗手点「AI 生成三视图」;
+  // 弹窗里那个按钮保留,用于重跑 / 补生成)。后端 generate-base-asset 已带 auto_triview 自动接力,
+  // 这里只做「保持转圈 + 兜底」:立绘落库后先确认后端已把三视图任务排上,排上了就把 loading 交给
+  // pending-assets 轮询;真没排上(旧后端 / 接力异常)才补发一次,避免重复出图重复扣费。
+  async function genPersonPortrait(prompt: string, label: string | undefined, busyKey: string, referenceAssetId?: string) {
+    const res = await genBaseAsset("person", prompt, label, busyKey, referenceAssetId);
+    const portraitId = res?.adopted_asset || "";
+    if (!portraitId) return res;
+    // 立绘的 busy 已在 genBaseAsset 里落回,这里立刻把三视图的 busy 顶上,卡片不闪「已就绪」
+    const triKeys = [...new Set([busyKey, ...entityGenKeys("person", label)])].map((k) => `${k}:tri`);
+    triKeys.forEach(addBusy);
+    try {
+      let chained = false;
+      for (let i = 0; i < 3 && !chained; i += 1) {
+        try {
+          const pending = (await api.pendingAssets(project.id)).pending || [];
+          chained = pending.some((p) => p.is_triview && p.triview_of === portraitId);
+        } catch {
+          /* 网络抖动:下一轮再看 */
+        }
+        if (!chained && i < 2) await new Promise((resolve) => window.setTimeout(resolve, 3000));
+      }
+      if (!chained) await onGenerateTriview(portraitId);
+    } finally {
+      triKeys.forEach(delBusy);
+    }
+    return res;
   }
   // ── 流程步骤4 · 实体提取闸门(进资产趴入口):不自动花钱,用户点按钮才提取/生成 ──
   // idle=露三按钮 / running=露 loading;提取后 metadata.script_entities 落库、或已有资产 → 闸门由渲染层自动隐藏
@@ -906,8 +930,7 @@ export function PipelinePage(props: {
     for (const e of entities) {
       const bk = `seed:${e.type === "character" ? "person" : "scene"}:${e.name}`;
       if (e.type === "character") {
-        if (mode === "full") await genPersonPortrait(e.visual_prompt, e.name, bk);
-        else await genBaseAsset("person", e.visual_prompt, e.name, bk);
+        await genPersonPortrait(e.visual_prompt, e.name, bk); // 立绘出完自动接力三视图
       } else {
         await genBaseAsset("scene", e.visual_prompt, e.name, bk);
       }
@@ -2944,6 +2967,7 @@ export function PipelinePage(props: {
     if (activeDot !== 2 && viewStage !== 2) return;
     let stopped = false;
     let timer = 0;
+    let idleTicks = 0; // 连续「无在途」次数:立绘刚出片、后端接力的三视图任务可能晚半拍才入库,别一空就停
     const tick = async () => {
       if (document.hidden) { if (!stopped) timer = window.setTimeout(tick, 4000); return; } // 后台不空跑(纯读),保留心跳回前台即恢复
       try {
@@ -2961,7 +2985,9 @@ export function PipelinePage(props: {
         prevPendingIdsRef.current = list.map((pending) => pending.id);
         setPendingGen(list.map((p) => ({ kind: p.kind, label: p.label, is_triview: p.is_triview, triview_of: p.triview_of })));
         // 没有在途出图、本地也没有生成在跑 → 没什么可等,停轮询;再点生成(genBusy 变)时本 effect 会重订阅恢复。
-        if (list.length === 0 && genBusy.size === 0) { stopped = true; return; }
+        // 连空两轮(~8s)才停:立绘落库瞬间后端才接力建三视图任务,一空就停会把「三视图生成中」整条漏掉。
+        idleTicks = list.length === 0 && genBusy.size === 0 ? idleTicks + 1 : 0;
+        if (idleTicks >= 2) { stopped = true; return; }
       } catch {
         /* 忽略,下一轮再试 */
       }
@@ -3722,7 +3748,7 @@ export function PipelinePage(props: {
                                       {kind === "scene" ? <Image /> : <UsersRound />}
                                       <span>{kind === "scene" ? "场景库替换" : "模特库替换"}</span>
                                     </button>
-                                    <button className="as-ai-btn" type="button" data-stop disabled={busy} onClick={() => { const p = (assetPromptDraft[seedKey] ?? tagPrompt(tag)).trim() || tagPrompt(tag); void genBaseAsset(kind, p, tag, seedKey); }}>
+                                    <button className="as-ai-btn" type="button" data-stop disabled={busy} onClick={() => { const p = (assetPromptDraft[seedKey] ?? tagPrompt(tag)).trim() || tagPrompt(tag); void (kind === "person" ? genPersonPortrait(p, tag, seedKey) : genBaseAsset(kind, p, tag, seedKey)); }}>
                                       <Sparkles /><span>{busy ? "生成中…" : "AI 生成"}</span>
                                     </button>
                                   </div>
@@ -3738,7 +3764,6 @@ export function PipelinePage(props: {
                               const portraitBusy = genKeys.some((k) => isBusy(k)) || (!mainUrl && pendingHas(kind, entity.name));
                               const triBusy = kind === "person" && (genKeys.some((k) => isBusy(`${k}:tri`)) || pendingTriFor(kind, entity));
                               const busy = portraitBusy || triBusy;
-                              const loadingText = kind === "person" && mainUrl ? "三视图生成中…" : "生成中…";
                               const rs = (kind === "person" || kind === "scene") && grp.adopted_asset ? (reviews[grp.adopted_asset] || grp.adopted_asset_review || "") : "";
                               const previewState = `${mainUrl ? " ready" : busy ? " generating" : " pending"}${busy ? " generating" : ""}`;
                               return (
@@ -3763,7 +3788,7 @@ export function PipelinePage(props: {
                                     onKeyDown={(e) => { if (e.key === "Enter" || e.key === " ") { e.preventDefault(); openAssetDetail(kind, entity); } }}
                                   >
                                     {kind === "person" && mainUrl ? <img className="as-gen-photo" src={mainUrl} alt="" /> : null}
-                                    {busy ? <span className={`asset-card-loading${mainUrl ? " veil" : ""}`}><span className="asset-spinner" aria-hidden="true"></span><span>{loadingText}</span></span> : null}
+                                    {busy ? <span className={`asset-card-loading${mainUrl ? " veil" : ""}`}><span className="asset-spinner" aria-hidden="true"></span><span>生成中…</span></span> : null}
                                   </div>
                                   <div className="as-gen-meta">
                                     <h4 onClick={() => openAssetDetail(kind, entity)}>{entity.name}</h4>
@@ -3789,7 +3814,7 @@ export function PipelinePage(props: {
                                       {kind === "scene" ? <Image /> : <UsersRound />}
                                       <span>{kind === "scene" ? "场景库替换" : "模特库替换"}</span>
                                     </button>
-                                    <button className="as-ai-btn" type="button" data-stop disabled={busy} onClick={() => { const p = (assetPromptDraft[entity.key] ?? grp.prompt ?? "").trim() || genPrompt; const ref = kind === "person" && grp.adopted_asset ? grp.adopted_asset : undefined; void genBaseAsset(kind, p, entity.name, entBK, ref); }}>
+                                    <button className="as-ai-btn" type="button" data-stop disabled={busy} onClick={() => { const p = (assetPromptDraft[entity.key] ?? grp.prompt ?? "").trim() || genPrompt; const ref = kind === "person" && grp.adopted_asset ? grp.adopted_asset : undefined; void (kind === "person" ? genPersonPortrait(p, entity.name, entBK, ref) : genBaseAsset(kind, p, entity.name, entBK)); }}>
                                       <Sparkles /><span>{busy ? "生成中…" : mainUrl ? "重新生成" : "AI 生成"}</span>
                                     </button>
                                   </div>
@@ -4743,7 +4768,8 @@ export function PipelinePage(props: {
           // 重跑立绘 → 追加新立绘并自动接力该版三视图。
           // 角色重跑:若该角色已有当前立绘,传它作参考图 → 后端走 image_edit 参考立绘+提示词,保持同一人物一致(不重抽随机人)。
           const ref = isPerson && viewPortraitAsset ? viewPortraitAsset : undefined;
-          await genBaseAsset(isPerson ? "person" : "scene", prompt, entity!.name, pBK, ref);
+          if (isPerson) await genPersonPortrait(prompt, entity!.name, pBK, ref);
+          else await genBaseAsset("scene", prompt, entity!.name, pBK);
           setAdPortraitId(null); setAdTriId(null);
         }
         async function regenTri() {
@@ -4770,7 +4796,7 @@ export function PipelinePage(props: {
                       {/* 同三视图:大图随数据(portraitUrl)走,出图完成即显示,不被在途 busyPortrait 卡转圈 */}
                       <div className={`placeholder ad-lead-img${portraitUrl ? " has-mock-media" : ""}`} style={portraitUrl ? mediaStyle(portraitUrl) : undefined}>
                         {!portraitUrl && (busyPortrait
-                          ? <div style={{ display: "flex", flexDirection: "column", gap: 8, alignItems: "center" }}><span className="spinner" aria-hidden="true"></span><span className="ph-frame">立绘生成中…</span></div>
+                          ? <div style={{ display: "flex", flexDirection: "column", gap: 8, alignItems: "center" }}><span className="spinner" aria-hidden="true"></span><span className="ph-frame">生成中…</span></div>
                           : <span className="ph-frame">立绘</span>)}
                       </div>
                       {portraitUrl && <button className="ad-zoom-btn" type="button" title="查看大图" onClick={() => setPreview({ src: portraitUrl, kind: "image", name: `${entity.name} · 立绘` })}>{zoomSvg}</button>}
@@ -4805,7 +4831,7 @@ export function PipelinePage(props: {
                                 避免「缩略图已出、大图还在转圈」——busyTri 只在「还没任何结果」时显示生成中占位 */}
                             <div className={`placeholder${triUrl ? " has-mock-media" : ""}`} style={triUrl ? mediaStyle(triUrl) : undefined}>
                               {!triUrl && (busyTri
-                                ? <div style={{ display: "flex", flexDirection: "column", gap: 8, alignItems: "center" }}><span className="spinner" aria-hidden="true"></span><span className="ph-frame">三视图生成中…</span></div>
+                                ? <div style={{ display: "flex", flexDirection: "column", gap: 8, alignItems: "center" }}><span className="spinner" aria-hidden="true"></span><span className="ph-frame">生成中…</span></div>
                                 : <span className="ph-frame">正 / 侧 / 背 · 三视图</span>)}
                               {triUrl && busyTri && <span className="sb-gen-veil" aria-hidden="true"><span className="spinner" /></span>}
                             </div>

core/frontend/src/routes/products.tsx

@@ -3,6 +3,7 @@ import { createPortal } from "react-dom";
 import type { ChangeEvent, CSSProperties, FormEvent, KeyboardEvent } from "react";
 import { ArrowLeft, Check, ChevronDown, Grid2X2, List, PackagePlus, PackageX, Search, Settings2, Trash2, X } from "lucide-react";
 import { ConfirmModal, MediaLightbox, SuccessModal } from "../components/overlays";
+import { useFileDrop } from "../components/use-file-drop";
 import { ReviewBadge, type ReviewStatus } from "../components/review-badge";
 import { ProductCreateDrawer } from "../components/product-create-drawer";
 import {
@@ -786,9 +787,15 @@ export function ProductDetailPage({ product, projects, initialTab = "assets", na
     return () => { alive = false; };
   }, [product?.id, product.cover_asset, assetReload]);
 
+  const imgDrop = useFileDrop((files) => { void uploadProductImage(files[0]); }, { disabled: uploading });
+
   async function onPickProductImage(event: ChangeEvent<HTMLInputElement>) {
     const file = event.target.files?.[0];
     event.target.value = "";
+    await uploadProductImage(file);
+  }
+
+  async function uploadProductImage(file?: File | null) {
     if (!file || !onUploadImage) return;
     setUploading(true);
     try {
@@ -1163,7 +1170,7 @@ export function ProductDetailPage({ product, projects, initialTab = "assets", na
                     </div>
                   );
                 })}
-                <div className="img-upload" id="ov-img-add" title="上传图片" role="button" tabIndex={0} onClick={() => imgInputRef.current?.click()} onKeyDown={(event) => { if (event.key === "Enter" || event.key === " ") { event.preventDefault(); imgInputRef.current?.click(); } }}>
+                <div className={`img-upload${imgDrop.dragging ? " is-dragover" : ""}`} {...imgDrop.dropProps} id="ov-img-add" title="上传图片" role="button" tabIndex={0} onClick={() => imgInputRef.current?.click()} onKeyDown={(event) => { if (event.key === "Enter" || event.key === " ") { event.preventDefault(); imgInputRef.current?.click(); } }}>
                   {uploading ? (
                     <span className="ph-frame" style={{ fontSize: 12 }}>上传中…</span>
                   ) : (

core/frontend/src/routes/quick-create.tsx

@@ -21,6 +21,7 @@ import {
 } from "lucide-react";
 import { api, ApiError, type QuickCreateJob } from "../api";
 import { ConfirmModal, OverlayPortal, useBodyScrollLock } from "../components/overlays";
+import { useFileDrop } from "../components/use-file-drop";
 import { forgetQuickCreateJob, readQuickCreateJobId, rememberQuickCreateJob, stripQuickCreateSuffix } from "../quick-create-lock";
 import type { ModelConfig } from "../types";
 import {
@@ -135,6 +136,9 @@ export function QuickCreatePage({
   const [submitting, setSubmitting] = useState(false);
   const [cancelling, setCancelling] = useState(false);
   const [confirmCancel, setConfirmCancel] = useState(false);
+  // 进页面先向后端确认有没有在跑的任务。localStorage 可能被清、也可能换了浏览器,
+  // 只认它会让刷新后看到一张空表单,用户以为没任务又提交一次 —— 那会重复建商品、重复扣费。
+  const [restoring, setRestoring] = useState(true);
   const [serviceUnavailable, setServiceUnavailable] = useState(false);
   const [unavailableMessage, setUnavailableMessage] = useState("");
   const [pollEpoch, setPollEpoch] = useState(0);
@@ -183,8 +187,19 @@ export function QuickCreatePage({
       }))
       .catch(() => undefined);
     void api.quickCreateHistory()
-      .then((payload) => setHistory((payload.results || []).filter(jobIsComplete)))
-      .catch(() => undefined);
+      .then((payload) => {
+        setHistory((payload.results || []).filter(jobIsComplete));
+        const running = payload.inflight || null;
+        if (running) {
+          setJob(running);
+          setJobId(running.id);
+          rememberQuickCreateJob(running.id);
+        } else if (!savedJobId()) {
+          forgetQuickCreateJob();
+        }
+      })
+      .catch(() => undefined)
+      .finally(() => setRestoring(false));
   }, []);
 
   useEffect(() => {
@@ -325,7 +340,7 @@ export function QuickCreatePage({
     setPlaying({ url, title: title || "预览视频" });
   }
 
-  function selectImages(files: FileList | null) {
+  function selectImages(files: FileList | File[] | null) {
     const selected = Array.from(files || []).filter((file) => file.type.startsWith("image/"));
     setImages((current) => {
       const room = Math.max(0, 9 - savedImages.length - current.length);
@@ -386,6 +401,10 @@ export function QuickCreatePage({
   }
 
   async function startGeneration() {
+    if (restoring) {
+      onNotify?.("info", "正在读取任务状态，请稍候");
+      return;
+    }
     if (!name.trim() || (!images.length && !savedImages.length)) {
       onNotify?.("info", "请先填写商品名称并上传商品图片");
       return;
@@ -433,7 +452,16 @@ export function QuickCreatePage({
       onNotify?.("success", "一键成片任务已启动");
       onProjectCreated?.();
     } catch (error) {
-      if (error instanceof ApiError && error.status === 503) {
+      if (error instanceof ApiError && error.status === 409) {
+        // 后端单飞闸:已有任务在跑。直接接上它,别让用户对着报错干瞪眼。
+        const running = (error.payload as { inflight?: QuickCreateJob } | undefined)?.inflight;
+        if (running) {
+          setJob(running);
+          setJobId(running.id);
+          rememberQuickCreateJob(running.id);
+        }
+        onNotify?.("info", error.message || "已有一个一键成片正在进行中");
+      } else if (error instanceof ApiError && error.status === 503) {
         setServiceUnavailable(true);
         setUnavailableMessage(error.message || "一键成片服务暂不可用，请稍后再试");
         onNotify?.("info", error.message || "一键成片服务暂不可用，请稍后再试");
@@ -520,6 +548,7 @@ export function QuickCreatePage({
   }
 
   const isGenerating = submitting || job?.status === "queued" || job?.status === "running";
+  const imageDrop = useFileDrop((files) => selectImages(files), { disabled: isGenerating });
   const isComplete = job?.status === "succeeded";
   const isCancelled = job?.status === "cancelled";
   const isFailed = !isGenerating && !isComplete && (job?.status === "failed" || isCancelled || serviceUnavailable);
@@ -547,6 +576,7 @@ export function QuickCreatePage({
   const estimatedPoints = videoEstimate.points > 0 ? videoEstimate.points + sceneCount * 60 : sceneCount * 240;
   const shellClass = [
     "quick-create-shell",
+    restoring ? "is-restoring" : "",
     isGenerating ? "is-generating" : "",
     isComplete ? "is-complete" : "",
     isFailed ? "is-failed" : "",
@@ -562,7 +592,11 @@ export function QuickCreatePage({
       </header>
 
       <div className={shellClass} id="quickCreateShell">
-        <section className="quick-create-panel quick-form-panel">
+        <section
+          className={`quick-create-panel quick-form-panel${restoring ? " is-locked" : ""}`}
+          aria-busy={restoring}
+          inert={restoring}
+        >
           <div className="quick-form-copy">
             <h2>告诉我们这是什么商品</h2>
           </div>
@@ -614,7 +648,10 @@ export function QuickCreatePage({
 
           <div className="quick-field">
             <span className="quick-field-label"><span>商品图片</span><small>必填 · 最多9张</small></span>
-            <div className={`quick-upload${imageCount ? " has-images" : ""}`}>
+            <div
+              className={`quick-upload${imageCount ? " has-images" : ""}${imageDrop.dragging ? " is-dragover" : ""}`}
+              {...imageDrop.dropProps}
+            >
               <input ref={imageInputRef} type="file" accept="image/jpeg,image/png,image/webp" multiple onChange={(event) => { selectImages(event.target.files); event.currentTarget.value = ""; }} />
               {imageCount ? (
                 <div className="quick-upload-filled">
@@ -686,6 +723,12 @@ export function QuickCreatePage({
         </section>
 
         <section className="quick-create-panel quick-status-panel" aria-live="polite">
+          <div className="quick-state quick-state-restoring" role="status">
+            <div className="quick-restoring-spinner" aria-hidden="true" />
+            <h2>正在读取任务状态</h2>
+            <p>确认有没有正在进行的一键成片，稍候</p>
+          </div>
+
           <div className="quick-state quick-state-ready">
             <div className="quick-ready-orbit"><span className="quick-ready-icon"><Sparkles /></span></div>
             <h2>核心参数可选，其余自动完成</h2>

core/frontend/src/routes/settings.tsx

@@ -10,6 +10,7 @@ import {
 } from "lucide-react";
 import type { LoginSession, Team, User, UserPreference } from "../types";
 import { TeamModal } from "../components/overlays";
+import { useFileDrop } from "../components/use-file-drop";
 
 type SectionKey = "profile" | "security" | "notify" | "pref" | "display";
 
@@ -346,13 +347,18 @@ export function SettingsPage({
     setModal("avatar");
   }
 
-  function onPickAvatar(event: ChangeEvent<HTMLInputElement>) {
-    const file = event.target.files?.[0];
+  function acceptAvatar(file?: File | null) {
     if (!file) return;
     setAvatarFile(file);
     setAvatarPreview(URL.createObjectURL(file));
   }
 
+  function onPickAvatar(event: ChangeEvent<HTMLInputElement>) {
+    acceptAvatar(event.target.files?.[0]);
+  }
+
+  const avatarDrop = useFileDrop((files) => acceptAvatar(files[0]), { disabled: savingAvatar });
+
   async function handleUploadAvatar() {
     if (!avatarFile || savingAvatar) return;
     setSavingAvatar(true);
@@ -717,7 +723,8 @@ export function SettingsPage({
           onChange={onPickAvatar}
         />
         <div
-          className="upload-zone"
+          className={`upload-zone${avatarDrop.dragging ? " dragover" : ""}`}
+          {...avatarDrop.dropProps}
           role="button"
           tabIndex={0}
           aria-label="点击选择图片上传"
@@ -732,7 +739,7 @@ export function SettingsPage({
           <span className="uz-ic">
             <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" /><polyline points="17 8 12 3 7 8" /><line x1="12" y1="3" x2="12" y2="15" /></svg>
           </span>
-          <div><strong>点击选择</strong> · 图片文件</div>
+          <div><strong>{avatarDrop.dragging ? "松开即可上传" : "点击选择"}</strong> · 图片文件</div>
           <span className="uz-hint">JPG / PNG / WebP · ≤ 2 MB · 推荐 256 × 256</span>
         </div>
 

core/frontend/src/routes/video-remix.tsx

@@ -13,6 +13,7 @@ import {
   PanelsTopLeft,
   Play,
   RectangleVertical,
+  RefreshCw,
   Save,
   ScanLine,
   ScanSearch,
@@ -21,6 +22,7 @@ import {
 } from "lucide-react";
 import { api, ApiError } from "../api";
 import { ConfirmModal, MediaLightbox } from "../components/overlays";
+import { useFileDrop } from "../components/use-file-drop";
 import type { ModelConfig, VideoDigestHistory, VideoDigestJob } from "../types";
 import type { NavigateFn } from "./route-config";
 
@@ -167,6 +169,8 @@ export function VideoRemixPage({ textModels = [], onNotify, onBack, navigate }:
   const [openHistoryId, setOpenHistoryId] = useState("");
   const [playing, setPlaying] = useState<VideoDigestHistory | null>(null);
   const [confirmCancel, setConfirmCancel] = useState(false);
+  // 进页面先向后端确认有没有在跑的提炼,确认完再决定显示表单还是进度
+  const [restoring, setRestoring] = useState(true);
   const promptRef = useRef<HTMLTextAreaElement>(null);
   const completedNoticeRef = useRef("");
   const abortRef = useRef<AbortController | null>(null);
@@ -236,21 +240,31 @@ export function VideoRemixPage({ textModels = [], onNotify, onBack, navigate }:
     }
     let cancelled = false;
     void (async () => {
-      await loadHistory();
+      const listed = await loadHistory();
       if (cancelled) return;
+      // 优先信服务端:列表接口会回本团队在跑的那条。localStorage 可能被清、
+      // 也可能换了浏览器/标签页,只认它会让「退出再进来任务就没了」。
+      const inflight = listed?.inflight || null;
       const stored = readJobId();
-      if (!stored) return;
+      const restoreId = (inflight ? jobIdOf(inflight) : "") || stored;
+      if (!restoreId) {
+        forgetJob();
+        setRestoring(false);
+        return;
+      }
       try {
-        const job = await api.getVideoDigest(stored);
+        const job = inflight && jobIdOf(inflight) === restoreId
+          ? inflight
+          : await api.getVideoDigest(restoreId);
         if (cancelled) return;
         if (job.status === "processing") {
-          if (!job.video_url && !job.cover_url) {
-            forgetJob();
-            void api.cancelVideoDigest(stored).catch(() => undefined);
-            return;
-          }
+          // 之前这里在「拿不到封面/原片直链」时把任务取消掉 —— 那是拿渲染缩略图的
+          // 能力去判活,TOS 慢一点或签名失败就误杀正在跑的任务。一律恢复并续上轮询,
+          // 真死掉的由后端 expire_stale_team_digests(15 分钟)回收。
           applyJobMeta(job);
-          setJobId(stored);
+          setJobId(restoreId);
+          rememberJob(restoreId);
+          setRestoring(false);
           return;
         }
         if (job.status === "succeeded") {
@@ -260,7 +274,9 @@ export function VideoRemixPage({ textModels = [], onNotify, onBack, navigate }:
         /* 过期 / 已取消 / 不存在:当没任务 */
       }
       forgetJob();
-    })();
+    })().finally(() => {
+      if (!cancelled) setRestoring(false);
+    });
     return () => {
       cancelled = true;
     };
@@ -322,6 +338,11 @@ export function VideoRemixPage({ textModels = [], onNotify, onBack, navigate }:
     };
   }, [pollId, onNotify]);
 
+  const videoDrop = useFileDrop(
+    (files) => { void pickFile(files[0] || null); },
+    { disabled: analyzing }
+  );
+
   const pickFile = async (next: File | null) => {
     if (!next || analyzing) return;
     if (!/\.(mp4|mov|m4v|webm)$/i.test(next.name)) {
@@ -391,6 +412,19 @@ export function VideoRemixPage({ textModels = [], onNotify, onBack, navigate }:
       setJobId(id);
     } catch (error) {
       if (userCancelledRef.current || (error instanceof DOMException && error.name === "AbortError")) return;
+      if (error instanceof ApiError && error.status === 409) {
+        // 后端单飞闸:已有提炼在跑。直接接上它,别让用户对着报错干瞪眼。
+        const running = (error.payload as { inflight?: VideoDigestJob } | undefined)?.inflight;
+        if (running) {
+          const id = jobIdOf(running);
+          applyJobMeta(running);
+          rememberJob(id);
+          setWatchId("");
+          setJobId(id);
+        }
+        onNotify("info", error.message || "已有一个视频正在提炼中");
+        return;
+      }
       onNotify("error", error instanceof Error && error.message ? error.message : "视频拆解失败，请重试");
     } finally {
       setSubmitting(false);
@@ -460,6 +494,7 @@ export function VideoRemixPage({ textModels = [], onNotify, onBack, navigate }:
   const stage: ProgressStage = analyzing ? "analyze" : hasResult ? "prompt" : file || remoteVideoUrl ? "analyze" : "upload";
   const panelClass = [
     "video-result-panel remix-information-panel",
+    restoring ? "is-restoring" : "",
     hasResult ? "has-result" : "",
     analyzing ? "is-analyzing" : "",
   ].filter(Boolean).join(" ");
@@ -496,32 +531,54 @@ export function VideoRemixPage({ textModels = [], onNotify, onBack, navigate }:
           </div>
 
           <div className="video-flow-grid remix-flow-grid">
-            <section className="video-flow-panel video-remix-upload-panel">
+            <section
+              className={`video-flow-panel video-remix-upload-panel${restoring ? " is-locked" : ""}`}
+              aria-busy={restoring}
+              inert={restoring}
+            >
               <h2>上传参考视频</h2>
               <div className="video-flow-step">
                 <div className="video-flow-step-head">
                   <strong>参考视频</strong>
-                  <span>MP4 / MOV · 最长 60 秒</span>
+                  <span>MP4 / MOV · 最长 3 分钟 · ≤200MB</span>
                 </div>
                 {previewUrl ? (
-                  <div className="video-upload-field has-file has-preview">
-                    <video src={previewUrl} poster={coverUrl || undefined} controls playsInline preload="metadata" />
-                    <label className={`remix-replace-video${analyzing ? " is-disabled" : ""}`}>
-                      <input
-                        type="file"
-                        accept="video/mp4,video/quicktime,video/webm"
-                        hidden
-                        disabled={analyzing}
-                        onChange={(event) => {
-                          void pickFile(event.target.files?.[0] || null);
-                          event.target.value = "";
-                        }}
-                      />
-                      更换视频
-                    </label>
+                  <div
+                    className={`video-upload-field has-file has-preview${videoDrop.dragging ? " is-dragover" : ""}`}
+                    {...videoDrop.dropProps}
+                  >
+                    <div className="video-upload-preview">
+                      <video src={previewUrl} poster={coverUrl || undefined} controls playsInline preload="metadata" />
+                      <div className="video-upload-preview-meta">
+                        <strong>{fileName || file?.name || "参考视频"}</strong>
+                        <small>
+                          {analyzing
+                            ? "正在提炼分镜稿…"
+                            : [duration ? `${duration} 秒` : "", ratio, fileMetaCopy(kind, fileSize, width, height)]
+                              .filter(Boolean).join(" · ")}
+                        </small>
+                      </div>
+                      <label className={`video-upload-change${analyzing ? " is-disabled" : ""}`}>
+                        <input
+                          type="file"
+                          accept="video/mp4,video/quicktime,video/webm"
+                          hidden
+                          disabled={analyzing}
+                          onChange={(event) => {
+                            void pickFile(event.target.files?.[0] || null);
+                            event.target.value = "";
+                          }}
+                        />
+                        <RefreshCw />
+                        更换视频
+                      </label>
+                    </div>
                   </div>
                 ) : (
-                  <label className="video-upload-field">
+                  <label
+                    className={`video-upload-field${videoDrop.dragging ? " is-dragover" : ""}`}
+                    {...videoDrop.dropProps}
+                  >
                     <input
                       type="file"
                       accept="video/mp4,video/quicktime,video/webm"
@@ -534,7 +591,7 @@ export function VideoRemixPage({ textModels = [], onNotify, onBack, navigate }:
                     />
                     <span>
                       <FileVideo />
-                      <strong>点击上传参考视频</strong>
+                      <strong>{videoDrop.dragging ? "松开即可上传" : "点击或拖拽上传参考视频"}</strong>
                       <small>上传后自动识别镜头结构与内容节奏</small>
                     </span>
                   </label>
@@ -544,7 +601,7 @@ export function VideoRemixPage({ textModels = [], onNotify, onBack, navigate }:
                 <button
                   type="button"
                   className="primary-action"
-                  disabled={analyzing || !canAnalyze}
+                  disabled={restoring || analyzing || !canAnalyze}
                   onClick={() => void analyze()}
                 >
                   <ScanSearch />
@@ -554,6 +611,13 @@ export function VideoRemixPage({ textModels = [], onNotify, onBack, navigate }:
             </section>
 
             <aside className={panelClass} aria-live="polite">
+              <div className="remix-restoring-state" role="status" aria-live="polite">
+                <div className="remix-restoring-content">
+                  <span className="remix-restoring-spinner" aria-hidden="true" />
+                  <strong>正在读取任务状态</strong>
+                  <span>确认有没有正在进行的提炼，稍候</span>
+                </div>
+              </div>
               <div className="video-result-placeholder">
                 <div>
                   <span className="remix-placeholder-icon"><ScanLine /></span>
@@ -568,6 +632,7 @@ export function VideoRemixPage({ textModels = [], onNotify, onBack, navigate }:
                   </div>
                   <strong>正在提炼提示词</strong>
                   <span>离开页面也不会中断，稍后回来即可查看结果</span>
+                  <div className="remix-generating-bar" aria-hidden="true"><span /></div>
                   <button type="button" className="secondary-action remix-cancel-analyze" onClick={() => setConfirmCancel(true)}>
                     <X />
                     取消
@@ -616,6 +681,10 @@ export function VideoRemixPage({ textModels = [], onNotify, onBack, navigate }:
                   <div><h2>提示词内容</h2></div>
                 </div>
                 <div className="remix-prompt-head-actions">
+                  <button type="button" className="primary-action remix-prompt-head-btn" onClick={() => continueGenerate()}>
+                    <span>生成视频</span>
+                    <ArrowRight />
+                  </button>
                   <button type="button" className="secondary-action remix-prompt-head-btn" onClick={() => void savePrompt()}>
                     <Save />
                     保存提示词
@@ -629,12 +698,6 @@ export function VideoRemixPage({ textModels = [], onNotify, onBack, navigate }:
                 value={prompt}
                 onChange={(event) => setPrompt(event.target.value)}
               />
-              <div className="video-flow-actions remix-prompt-actions">
-                <button type="button" className="primary-action" onClick={() => continueGenerate()}>
-                  <span>生成视频</span>
-                  <ArrowRight />
-                </button>
-              </div>
             </div>
           </section>
 

core/frontend/src/routes/video-replace.tsx

@@ -20,6 +20,7 @@ import {
 } from "lucide-react";
 import { api, ApiError } from "../api";
 import { OverlayPortal, useBodyScrollLock } from "../components/overlays";
+import { useFileDrop } from "../components/use-file-drop";
 import {
   DEFAULT_BILLING_RATES,
   FC_MODELS,
@@ -37,6 +38,13 @@ const JOB_KEY = "airshelf:video-replace-job";
 const MODE_KEY = "airshelf:video-replace-mode";
 const CHARACTER_MARK = "[视频复刻·角色]";
 const VIDEO_ACCEPT = "video/mp4,video/quicktime";
+// 商品复刻的参考视频只用来提炼分镜稿，不发火山，所以能到 60 秒；
+// 角色复刻仍把参考视频直传火山，卡死在火山的 15 秒。
+const PRODUCT_SOURCE_PURPOSE = "video_replace_product";
+const REF_SECONDS_MAX = { product: 60, character: 15 } as const;
+const REF_BYTES_MAX = { product: 200 * 1024 * 1024, character: 50 * 1024 * 1024 } as const;
+// 火山单次出片上限。参考视频更长时不报错,成片按这个截断,提示词里会要求模型压缩改编。
+const SEEDANCE_MAX_OUTPUT_SECONDS = 15;
 
 type ProductSource = "library" | "temporary" | "";
 type ReplaceMode = "product" | "character";
@@ -50,7 +58,7 @@ const REPLACE_MODE_COPY = {
     videoReady: "视频已就绪，将先提炼分镜稿再复刻",
     libraryTitle: "从商品库选择",
     libraryEmpty: "选择已创建的商品",
-    temporaryTitle: "临时上传商品",
+    temporaryTitle: "临时上传素材",
     temporaryEmpty: "仅用于本次任务 · 最多 9 张",
     temporaryNoun: "商品图",
     temporaryFallback: "临时商品素材",
@@ -170,8 +178,9 @@ function formatClock(seconds: number) {
 }
 
 function clampDuration(seconds: number) {
-  const rounded = Math.round(Number(seconds) || 15);
-  return Math.min(15, Math.max(4, rounded || 15));
+  const rounded = Math.round(Number(seconds) || SEEDANCE_MAX_OUTPUT_SECONDS);
+  // 60 秒参考视频不是错误:成片取火山能出的最长,分镜稿由模型压缩改编。
+  return Math.min(SEEDANCE_MAX_OUTPUT_SECONDS, Math.max(4, rounded || SEEDANCE_MAX_OUTPUT_SECONDS));
 }
 
 function isCharacterRemix(task?: Partial<FreeVideoTask> | null) {
@@ -240,6 +249,24 @@ function productImageCount(product: Product) {
   return product.images?.filter((image) => image.asset || image.preview_url).length || 0;
 }
 
+/** 选中后这次实际会带给模型的参考图。三视图是 standalone 资产,不在 images 里,单独点名。 */
+function librarySelectionDetail(mode: ReplaceMode, product: Product | null, model: ModelEntity | null) {
+  if (mode === "character") {
+    if (!model) return "";
+    const parts = [model.portrait ? "定妆照" : "", model.triview ? "三视图" : ""].filter(Boolean);
+    return parts.length ? `将带上 ${parts.join(" + ")}` : "";
+  }
+  if (!product) return "";
+  const count = productImageCount(product) || (product.cover_preview_url ? 1 : 0);
+  const parts = [count ? `${count} 张商品图` : ""];
+  parts.push(product.triview_preview_url ? "三视图" : "");
+  const kept = parts.filter(Boolean);
+  if (!kept.length) return "";
+  return product.triview_preview_url
+    ? `将带上 ${kept.join(" + ")}`
+    : `将带上 ${kept.join("")} · 该商品还没有三视图`;
+}
+
 function modelCover(model: ModelEntity) {
   return model.portrait || model.triview || "";
 }
@@ -266,8 +293,12 @@ export function VideoReplacePage({
   const [models, setModels] = useState<ModelEntity[]>([]);
   const [replaceMode, setReplaceMode] = useState<ReplaceMode>(readReplaceMode);
   const [videoFile, setVideoFile] = useState<File | null>(null);
+  // 选完立刻用本地 objectURL 放预览,不等上传回来 —— 用户要先看见自己选的片子
+  const [videoPreview, setVideoPreview] = useState("");
   const [videoRef, setVideoRef] = useState<FreeVideoRef | null>(null);
   const [videoUploading, setVideoUploading] = useState(false);
+  // 进页面先向后端确认有没有在跑的任务,确认完再决定显示表单还是进度
+  const [restoring, setRestoring] = useState(true);
   const [videoMeta, setVideoMeta] = useState({ duration: 0, width: 0, height: 0 });
   const [source, setSource] = useState<ProductSource>("");
   const [selectedProduct, setSelectedProduct] = useState<Product | null>(null);
@@ -314,6 +345,7 @@ export function VideoReplacePage({
   const productReady = source === "library"
     ? (replaceMode === "character" ? Boolean(selectedModel) : Boolean(selectedProduct))
     : (tempFiles.length > 0 || tempAssetRefs.length > 0);
+  const librarySelected = source === "library" && Boolean(replaceMode === "character" ? selectedModel : selectedProduct);
   const libraryPreview = replaceMode === "character"
     ? (selectedModel ? modelCover(selectedModel) : "")
     : (selectedProduct ? productCover(selectedProduct) : "");
@@ -345,7 +377,9 @@ export function VideoReplacePage({
     ],
   }, billingRates);
   const points = estimated.points || 220;
-  const generating = Boolean(job && isInFlight(job.status)) || submitting || videoUploading;
+  // 上传参考视频不算「正在复刻」:右侧面板要保持待命,只在上传区自己显示进度。
+  // 生成按钮不会因此被误点 —— videoReady 要等 asset_id 回来才为真。
+  const generating = Boolean(job && isInFlight(job.status)) || submitting;
   const digesting = Boolean(job && isDigesting(job));
   // 商品复刻提交后先进拆解态;审核态是角色复刻专有(参考视频直传火山才需要送审)。
   const reviewing = !digesting && (submitting || Boolean(job && (job.review_stage === "reviewing" || job.status === "created")));
@@ -353,6 +387,7 @@ export function VideoReplacePage({
   const resultCopy = hasResult && job ? REPLACE_MODE_COPY[modeFromTask(job)] : copy;
   const panelClass = [
     "video-result-panel replace-result-panel",
+    restoring ? "is-restoring" : "",
     generating ? "is-generating" : "",
     reviewing || digesting ? "is-reviewing" : "",
     hasResult ? "has-result" : "",
@@ -367,11 +402,40 @@ export function VideoReplacePage({
     try {
       const data = await api.videoReplaceTasks(0, 50);
       setHistory((data.results || []).filter((item) => item.status === "succeeded"));
+      return data;
     } catch {
       /* 历史失败不挡当前复刻 */
+      return null;
     }
   };
 
+  // 恢复在跑的任务。拉到之前一律显示「读取中」——否则用户以为没任务,又传一次。
+  const restoreInflight = async () => {
+    const data = await loadHistory();
+    const running = data?.inflight || null;
+    if (running) {
+      // 静默恢复:只把进度接上。不要走 fillFormFromTask —— 它会弹 toast、滚动页面,
+      // 还依赖商品/模特列表加载完,拿来做刷新恢复会又吵又不稳。
+      setJob(running);
+      setJobId(running.id);
+      rememberJob(running.id);
+      const mode = modeFromTask(running);
+      setReplaceMode(mode);
+      rememberReplaceMode(mode);
+      const video = videoRefFromTask(running);
+      if (video?.url) setVideoPreview(video.url);
+      setVideoRef(video ? { ...video, type: "video", role: "reference_video", label: video.label || "参考视频" } : null);
+      setFilledSubjectName(subjectNameFromTask(running));
+      setVideoMeta({
+        duration: Number(video?.duration || running.duration || 0),
+        ...sizeFromRatio(running.aspect_ratio || "9:16"),
+      });
+    } else {
+      forgetJob();
+    }
+    setRestoring(false);
+  };
+
   useEffect(() => {
     void api.products(100).then((payload) => setProducts(payload.results || [])).catch(() => undefined);
     void api.listModels({ pageSize: 200 }).then((payload) => setModels((payload.results || []).filter((item) => !item.is_deleted))).catch(() => undefined);
@@ -382,7 +446,7 @@ export function VideoReplacePage({
         multiplier: Number(config.team_price_multiplier) || 1,
       }))
       .catch(() => undefined);
-    void loadHistory();
+    void restoreInflight();
   }, []);
 
   useEffect(() => {
@@ -455,7 +519,10 @@ export function VideoReplacePage({
 
   const pickVideo = async (file: File | null) => {
     if (!file) return;
-    const check = await checkRefFile(file);
+    const check = await checkRefFile(file, {
+      maxSeconds: REF_SECONDS_MAX[replaceMode],
+      maxVideoBytes: REF_BYTES_MAX[replaceMode],
+    });
     if (!check.ok) {
       onNotify("error", check.error);
       return;
@@ -465,11 +532,13 @@ export function VideoReplacePage({
       return;
     }
     setVideoFile(file);
+    setVideoPreview(URL.createObjectURL(file));
     setVideoUploading(true);
     setJob((current) => (current && isInFlight(current.status) ? current : null));
     if (job && !isInFlight(job.status)) setJob(null);
     const form = new FormData();
     form.append("file", file);
+    if (replaceMode === "product") form.append("purpose", PRODUCT_SOURCE_PURPOSE);
     try {
       const uploaded = await api.uploadFreeVideoRef(form);
       setVideoRef({
@@ -490,13 +559,14 @@ export function VideoReplacePage({
     } catch (error) {
       setVideoFile(null);
       setVideoRef(null);
+      setVideoPreview("");
       onNotify("error", error instanceof Error ? error.message : "参考视频上传失败");
     } finally {
       setVideoUploading(false);
     }
   };
 
-  const addTempImages = (files: FileList | null) => {
+  const addTempImages = (files: FileList | File[] | null) => {
     const incoming = [...(files || [])].filter((file) => IMAGE_TYPES.includes(file.type));
     if (!incoming.length) {
       onNotify("error", "请选择 JPG、PNG 或 WebP 图片");
@@ -530,8 +600,33 @@ export function VideoReplacePage({
     if (job && !isInFlight(job.status)) setJob(null);
   };
 
+  useEffect(() => {
+    // 换一条预览或离开页面时释放 objectURL,不然一路选下去会攒一堆 blob
+    if (!videoPreview.startsWith("blob:")) return;
+    return () => URL.revokeObjectURL(videoPreview);
+  }, [videoPreview]);
+
+  const tempDrop = useFileDrop(
+    (files) => addTempImages(files),
+    { disabled: generating }
+  );
+
+  const videoDrop = useFileDrop(
+    (files) => { void pickVideo(files[0] || null); },
+    { disabled: generating || videoUploading }
+  );
+
   const switchReplaceMode = (next: ReplaceMode) => {
     if (next === replaceMode || generating) return;
+    // 商品复刻能传 60 秒，角色复刻只能 15 秒。带着超长视频切过去会一路走到提交才报错，
+    // 这里直接清掉并说明原因。
+    const tooLongForNext = (videoMeta.duration || 0) > REF_SECONDS_MAX[next] + 0.5;
+    if (tooLongForNext) {
+      setVideoFile(null);
+      setVideoRef(null);
+      setVideoPreview("");
+      setVideoMeta({ duration: 0, width: 0, height: 0 });
+    }
     setReplaceMode(next);
     rememberReplaceMode(next);
     setSource("");
@@ -544,7 +639,12 @@ export function VideoReplacePage({
     setPendingModelId("");
     setLibraryOpen(false);
     if (job && !isInFlight(job.status)) setJob(null);
-    onNotify("info", `已切换为${REPLACE_MODE_COPY[next].modeLabel}`);
+    onNotify(
+      "info",
+      tooLongForNext
+        ? `已切换为${REPLACE_MODE_COPY[next].modeLabel}，参考视频最长 ${REF_SECONDS_MAX[next]} 秒，请重新上传`
+        : `已切换为${REPLACE_MODE_COPY[next].modeLabel}`
+    );
   };
 
   const confirmLibrarySelection = () => {
@@ -647,6 +747,17 @@ export function VideoReplacePage({
         forgetJob();
       }
     } catch (error) {
+      if (error instanceof ApiError && error.status === 409) {
+        // 后端单飞闸:已有复刻在跑。直接接上它,别让用户对着报错干瞪眼。
+        const running = (error.payload as { inflight?: FreeVideoTask } | undefined)?.inflight;
+        if (running) {
+          setJob(running);
+          setJobId(running.id);
+          rememberJob(running.id);
+        }
+        onNotify("info", error.message || "已有一个视频正在复刻中");
+        return;
+      }
       onNotify("error", error instanceof Error ? error.message : "视频复刻提交失败");
     } finally {
       setSubmitting(false);
@@ -666,6 +777,8 @@ export function VideoReplacePage({
     setReplaceMode(mode);
     rememberReplaceMode(mode);
     setVideoFile(null);
+    // 从历史「重新生成」回填时也要把原视频放进预览框,否则第 1 步看起来像没选
+    setVideoPreview(video.url || "");
     setVideoRef({
       ...video,
       type: "video",
@@ -750,7 +863,11 @@ export function VideoReplacePage({
           </header>
 
           <div className="video-flow-grid">
-            <section className="video-flow-panel replace-flow-panel">
+            <section
+              className={`video-flow-panel replace-flow-panel${restoring ? " is-locked" : ""}`}
+              aria-busy={restoring}
+              inert={restoring}
+            >
               <h2>准备复刻素材</h2>
               <div className="replace-mode-switch" role="tablist" aria-label="选择视频复刻功能">
                 <button
@@ -781,9 +898,17 @@ export function VideoReplacePage({
               <div className="video-flow-step">
                 <div className="video-flow-step-head">
                   <strong>1. 参考视频</strong>
-                  <span>MP4 / MOV · 最长 15 秒</span>
+                  <span>MP4 / MOV · 最长 {REF_SECONDS_MAX[replaceMode]} 秒</span>
                 </div>
-                <label className={`video-upload-field${videoReady ? " has-file" : ""}`}>
+                <div
+                  className={[
+                    "video-upload-field",
+                    videoReady ? "has-file" : "",
+                    videoPreview ? "has-preview" : "",
+                    videoDrop.dragging ? "is-dragover" : "",
+                  ].filter(Boolean).join(" ")}
+                  {...videoDrop.dropProps}
+                >
                   <input
                     ref={videoInputRef}
                     type="file"
@@ -794,12 +919,40 @@ export function VideoReplacePage({
                       event.target.value = "";
                     }}
                   />
-                  <span>
-                    <FileVideo2 />
-                    <strong>{videoFile?.name || (videoReady ? "参考视频已就绪" : "点击上传参考视频")}</strong>
-                    <small>{videoReady ? copy.videoReady : copy.videoEmpty}</small>
-                  </span>
-                </label>
+                  {videoPreview ? (
+                    <div className="video-upload-preview">
+                      <video src={videoPreview} controls playsInline preload="metadata" />
+                      <div className="video-upload-preview-meta">
+                        <strong>{videoFile?.name || filledSubjectName || "参考视频"}</strong>
+                        <small>
+                          {videoUploading
+                            ? "正在上传参考视频…"
+                            : `${formatClock(videoMeta.duration)} · ${ratioCopy(aspectRatio)} · ${copy.videoReady}`}
+                        </small>
+                      </div>
+                      <button
+                        type="button"
+                        className="video-upload-change"
+                        disabled={generating || videoUploading}
+                        onClick={() => videoInputRef.current?.click()}
+                      >
+                        <RefreshCw />
+                        更换视频
+                      </button>
+                    </div>
+                  ) : (
+                    <button
+                      type="button"
+                      className="video-upload-trigger"
+                      disabled={generating}
+                      onClick={() => videoInputRef.current?.click()}
+                    >
+                      <FileVideo2 />
+                      <strong>{videoDrop.dragging ? "松开即可上传" : "点击或拖拽上传参考视频"}</strong>
+                      <small>{copy.videoEmpty}</small>
+                    </button>
+                  )}
+                </div>
               </div>
 
               <div className="video-flow-step">
@@ -810,30 +963,34 @@ export function VideoReplacePage({
                 <div className="product-replace-options">
                   <button
                     type="button"
-                    className={`replace-product-method${source === "library" ? " active" : ""}${libraryPreview ? " has-product-preview" : ""}`}
+                    className={`replace-product-method${source === "library" ? " active" : ""}${librarySelected ? " has-product-preview" : ""}`}
                     onClick={() => {
                       if (replaceMode === "character") setPendingModelId(selectedModel?.id || "");
                       else setPendingProductId(selectedProduct?.id || "");
                       setLibraryOpen(true);
                     }}
                   >
-                    {libraryPreview ? <img className="replace-product-method-background" src={libraryPreview} alt="" aria-hidden="true" /> : <img className="replace-product-method-background" alt="" aria-hidden="true" />}
-                    <span className="replace-product-method-icon"><LibraryBig /></span>
+                    <span className="replace-product-method-icon">
+                      {librarySelected && libraryPreview
+                        ? <img src={libraryPreview} alt="" aria-hidden="true" />
+                        : <LibraryBig />}
+                    </span>
                     <span className="replace-product-method-copy">
-                      <strong>{copy.libraryTitle}</strong>
-                      <small>
-                        {source === "library" && (replaceMode === "character" ? selectedModel : selectedProduct)
-                          ? `已选择 · ${replaceMode === "character" ? selectedModel?.name : selectedProduct?.title}`
-                          : copy.libraryEmpty}
-                      </small>
+                      <strong>
+                        {librarySelected
+                          ? (replaceMode === "character" ? selectedModel?.name : selectedProduct?.title)
+                          : copy.libraryTitle}
+                      </strong>
+                      <small>{librarySelected ? librarySelectionDetail(replaceMode, selectedProduct, selectedModel) || copy.libraryTitle : copy.libraryEmpty}</small>
                     </span>
                     <ChevronRight />
                   </button>
 
                   <div
-                    className={`replace-product-method replace-temporary-method${source === "temporary" ? " active" : ""}${tempDisplay.length ? " has-images" : ""}`}
+                    className={`replace-product-method replace-temporary-method${source === "temporary" ? " active" : ""}${tempDisplay.length ? " has-images" : ""}${tempDrop.dragging ? " is-dragover" : ""}`}
                     role="button"
                     tabIndex={0}
+                    {...tempDrop.dropProps}
                     onClick={() => tempInputRef.current?.click()}
                     onKeyDown={(event) => {
                       if (event.key === "Enter" || event.key === " ") {
@@ -846,7 +1003,13 @@ export function VideoReplacePage({
                     <span className="replace-product-method-icon"><Upload /></span>
                     <span className="replace-product-method-copy">
                       <strong>{copy.temporaryTitle}</strong>
-                      <small>{tempDisplay.length ? `已上传 ${tempDisplay.length} 张${copy.temporaryNoun}` : copy.temporaryEmpty}</small>
+                      <small>
+                        {tempDrop.dragging
+                          ? "松开即可添加"
+                          : tempDisplay.length
+                            ? `已上传 ${tempDisplay.length} 张${copy.temporaryNoun}`
+                            : copy.temporaryEmpty}
+                      </small>
                     </span>
                     <ImagePlus />
                     {tempDisplay.length ? (
@@ -924,7 +1087,7 @@ export function VideoReplacePage({
                 <button
                   type="button"
                   className="primary-action"
-                  disabled={!videoReady || !productReady || generating}
+                  disabled={restoring || !videoReady || !productReady || generating}
                   onClick={() => void startGeneration()}
                 >
                   <Replace />
@@ -934,6 +1097,13 @@ export function VideoReplacePage({
             </section>
 
             <aside className={panelClass} aria-live="polite">
+              <div className="replace-restoring-state" role="status" aria-live="polite">
+                <div className="replace-restoring-content">
+                  <span className="replace-restoring-spinner" aria-hidden="true" />
+                  <strong>正在读取任务状态</strong>
+                  <span>确认有没有正在进行的复刻，稍候</span>
+                </div>
+              </div>
               <div className="video-result-placeholder">
                 <div>
                   <div className="replace-placeholder-visual">

core/frontend/src/types.ts

@@ -255,6 +255,8 @@ export type Product = {
   purged_at?: string | null;
   cover_asset?: string | null;
   cover_preview_url?: string;
+  /** 商品三视图(白底多角度单张 16:9)。是 standalone 资产,不在 images 里。 */
+  triview_preview_url?: string;
   images?: Array<{ id: string; asset: string; preview_url?: string; sort_order: number; is_primary: boolean }>;
   selling_points: Array<{ id: string; title: string; detail: string; sort_order: number }>;
   created_at: string;

core/frontend/src/video-remix-page.css

@@ -358,11 +358,17 @@
 .vr-page .remix-prompt-head-actions .remix-prompt-head-btn {
   min-width: 0;
   height: 36px;
-  padding: 0 12px;
-  font-size: 12px;
+  padding: 0 14px;
+  font-size: 13px;
   font-weight: 500;
 }
 
+/* 「生成视频」是这一步的主动作,放按钮组最左边 */
+.vr-page .remix-prompt-head-actions .primary-action.remix-prompt-head-btn {
+  order: -1;
+  font-weight: 600;
+}
+
 .vr-page .remix-prompt-head-actions .remix-prompt-head-btn svg {
   width: 14px;
   height: 14px;
@@ -408,11 +414,6 @@
   box-shadow: 0 0 0 3px rgba(0, 47, 167, 0.08);
 }
 
-.vr-page .video-flow-actions.remix-prompt-actions {
-  justify-content: flex-end;
-  gap: 12px;
-}
-
 .vr-page .video-flow-actions.remix-analyze-actions {
   justify-content: flex-end;
   margin-top: auto;
@@ -481,11 +482,18 @@
 }
 
 .vr-page .video-upload-field:hover,
-.vr-page .video-upload-field.has-file {
+.vr-page .video-upload-field.has-file,
+.vr-page .video-upload-field.is-dragover {
   border-color: var(--klein);
   background: rgba(0, 47, 167, 0.075);
 }
 
+/* 拖拽悬停:实线 + 略深底,和「已选好」区分开 */
+.vr-page .video-upload-field.is-dragover {
+  border-style: solid;
+  background: rgba(0, 47, 167, 0.11);
+}
+
 .vr-page .video-upload-field > span {
   display: grid;
   place-items: center;
@@ -689,6 +697,71 @@
   line-height: 1.55;
 }
 
+/* 读取任务状态期间左侧整块不可操作:只锁提交按钮不够,用户照样能点/拖上传 */
+.vr-page .video-remix-upload-panel.is-locked {
+  pointer-events: none;
+  opacity: 0.55;
+  filter: saturate(0.85);
+  transition: opacity 160ms ease;
+}
+
+/* 进页面先确认后端有没有在跑的任务,确认完之前不给看空表单也不让提交 */
+.vr-page .remix-restoring-state { display: none; place-items: center; text-align: center; }
+
+.vr-page .remix-information-panel.is-restoring .remix-restoring-state { display: grid; }
+
+.vr-page .remix-information-panel.is-restoring .video-result-placeholder,
+.vr-page .remix-information-panel.is-restoring .remix-generating-state,
+.vr-page .remix-information-panel.is-restoring .video-analysis-result { display: none; }
+
+.vr-page .remix-restoring-content {
+  display: grid;
+  justify-items: center;
+  gap: 10px;
+  width: min(280px, 100%);
+}
+
+.vr-page .remix-restoring-content strong { color: var(--text); font-size: 16px; font-weight: 600; }
+.vr-page .remix-restoring-content span:not(.remix-restoring-spinner) {
+  color: var(--muted);
+  font-size: 12px;
+  line-height: 1.55;
+}
+
+.vr-page .remix-restoring-spinner {
+  width: 26px;
+  height: 26px;
+  border-radius: 50%;
+  border: 2px solid rgba(0, 47, 167, 0.16);
+  border-top-color: var(--klein);
+  animation: remix-restoring-spin 0.8s linear infinite;
+}
+
+@keyframes remix-restoring-spin { to { transform: rotate(360deg); } }
+
+.vr-page .remix-generating-bar {
+  width: 210px;
+  height: 4px;
+  margin-top: 8px;
+  overflow: hidden;
+  border-radius: 999px;
+  background: rgba(16, 16, 18, 0.08);
+}
+
+.vr-page .remix-generating-bar span {
+  width: 44%;
+  height: 100%;
+  display: block;
+  border-radius: inherit;
+  background: var(--klein);
+  animation: remix-progress-slide 1.15s ease-in-out infinite;
+}
+
+@keyframes remix-progress-slide {
+  0% { transform: translateX(-100%); }
+  100% { transform: translateX(330%); }
+}
+
 @keyframes remix-frame-scan {
   0% { transform: translateX(-130%); }
   100% { transform: translateX(130%); }
@@ -815,7 +888,8 @@
 }
 
 .vr-page .remix-page .video-upload-field:hover,
-.vr-page .remix-page .video-upload-field:focus-within {
+.vr-page .remix-page .video-upload-field:focus-within,
+.vr-page .remix-page .video-upload-field.is-dragover {
   border-color: var(--klein);
   background: #f0f5ff;
   box-shadow: inset 0 0 0 1px rgba(0, 47, 167, 0.05);
@@ -841,56 +915,74 @@
   font-size: 15px;
 }
 
+/* 预览卡与「视频复刻」页保持同一套:缩略图 + 文件信息 + 更换按钮,不再整块铺黑底 */
 .vr-page .remix-page .video-upload-field.has-preview {
-  position: relative;
-  display: block;
-  padding: 0;
-  overflow: hidden;
+  min-height: 0;
+  padding: 12px;
+  place-items: stretch;
+  text-align: left;
+  border-style: solid;
   cursor: default;
-  background: #0f1728;
-  border-color: rgba(0, 47, 167, 0.28);
-  box-shadow: none;
 }
 
-.vr-page .remix-page .video-upload-field.has-preview:hover,
-.vr-page .remix-page .video-upload-field.has-preview:focus-within {
-  background: #0f1728;
-  border-color: rgba(0, 47, 167, 0.28);
-  box-shadow: none;
+.vr-page .video-upload-preview {
+  display: grid;
+  grid-template-columns: minmax(0, 132px) minmax(0, 1fr) auto;
+  align-items: center;
+  gap: 14px;
+  width: 100%;
+  min-width: 0;
 }
 
 .vr-page .remix-page .video-upload-field.has-preview video {
   width: 100%;
-  height: 196px;
+  height: auto;
+  aspect-ratio: 9 / 16;
+  max-height: 168px;
   display: block;
+  border-radius: 8px;
   object-fit: contain;
   background: #0f1728;
 }
 
-.vr-page .remix-replace-video {
-  position: absolute;
-  top: 10px;
-  right: 10px;
-  z-index: 1;
-  padding: 7px 10px;
-  border: 1px solid rgba(255, 255, 255, 0.28);
+.vr-page .video-upload-preview-meta {
+  display: grid;
+  gap: 4px;
+  min-width: 0;
+}
+
+.vr-page .video-upload-change {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  padding: 8px 13px;
+  border: 1px solid rgba(0, 47, 167, 0.3);
   border-radius: 8px;
-  color: #fff;
-  background: rgba(13, 19, 31, 0.72);
-  font-size: 11px;
-  font-weight: 600;
+  background: transparent;
+  color: var(--klein);
+  font-size: 13px;
+  font-weight: 500;
   cursor: pointer;
+  transition: background 160ms ease, border-color 160ms ease;
 }
 
-.vr-page .remix-replace-video:hover {
-  background: rgba(0, 47, 167, 0.92);
+.vr-page .video-upload-change:hover {
+  border-color: var(--klein);
+  background: rgba(0, 47, 167, 0.075);
 }
 
-.vr-page .remix-replace-video.is-disabled {
+.vr-page .video-upload-change.is-disabled {
   pointer-events: none;
   opacity: 0.45;
 }
 
+.vr-page .video-upload-change svg { width: 15px; height: 15px; }
+
+@media (max-width: 720px) {
+  .vr-page .video-upload-preview { grid-template-columns: minmax(0, 96px) minmax(0, 1fr); }
+  .vr-page .video-upload-change { grid-column: 1 / -1; justify-content: center; }
+}
+
 .vr-page .remix-page .video-upload-field strong {
   color: #1d2940;
   font-size: 15px;
@@ -903,7 +995,8 @@
 
 .vr-page .remix-page .remix-information-panel .video-result-placeholder,
 .vr-page .remix-page .remix-information-panel .video-analysis-result,
-.vr-page .remix-page .remix-information-panel .remix-generating-state {
+.vr-page .remix-page .remix-information-panel .remix-generating-state,
+.vr-page .remix-page .remix-information-panel .remix-restoring-state {
   flex: 1;
 }
 
@@ -935,10 +1028,6 @@
   gap: 9px;
 }
 
-.vr-page .remix-page .remix-prompt-actions {
-  padding-top: 2px;
-}
-
 @keyframes remixReveal {
   from {
     opacity: 0;

core/frontend/src/video-replace-page.css

@@ -213,24 +213,104 @@
   color: #42506a;
   background: rgba(0, 47, 167, 0.04);
   text-align: center;
-  cursor: pointer;
   transition: border-color 160ms ease, background 160ms ease;
 }
 
 .vrep-page .video-upload-field:hover,
-.vrep-page .video-upload-field.has-file {
+.vrep-page .video-upload-field.has-file,
+.vrep-page .video-upload-field.is-dragover {
   border-color: var(--klein);
   background: rgba(0, 47, 167, 0.075);
 }
 
-.vrep-page .video-upload-field > span {
+/* 拖拽悬停:实线 + 略深底,和「已选好」区分开 */
+.vrep-page .video-upload-field.is-dragover {
+  border-style: solid;
+  background: rgba(0, 47, 167, 0.11);
+}
+
+/* 已有预览时容器让位给视频本身 */
+.vrep-page .video-upload-field.has-preview {
+  min-height: 0;
+  padding: 12px;
+  border-style: solid;
+  place-items: stretch;
+  text-align: left;
+}
+
+.vrep-page .video-upload-trigger {
   display: grid;
   place-items: center;
   gap: 8px;
   min-width: 0;
+  width: 100%;
+  padding: 0;
+  border: 0;
+  background: none;
+  color: inherit;
+  font: inherit;
+  text-align: center;
+  cursor: pointer;
 }
 
-.vrep-page .video-upload-field svg {
+.vrep-page .video-upload-trigger:disabled { cursor: default; opacity: .6; }
+
+.vrep-page .video-upload-preview {
+  display: grid;
+  grid-template-columns: minmax(0, 132px) minmax(0, 1fr) auto;
+  align-items: center;
+  gap: 14px;
+  width: 100%;
+  min-width: 0;
+}
+
+.vrep-page .video-upload-preview video {
+  width: 100%;
+  aspect-ratio: 9 / 16;
+  max-height: 168px;
+  border-radius: 8px;
+  background: #0f1728;
+  object-fit: contain;
+}
+
+.vrep-page .video-upload-preview-meta {
+  display: grid;
+  gap: 4px;
+  min-width: 0;
+}
+
+.vrep-page .video-upload-change {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  padding: 8px 13px;
+  border: 1px solid rgba(0, 47, 167, 0.3);
+  border-radius: 8px;
+  background: transparent;
+  color: var(--klein);
+  font-size: 13px;
+  font-weight: 500;
+  cursor: pointer;
+  transition: background 160ms ease, border-color 160ms ease;
+}
+
+.vrep-page .video-upload-change:hover:not(:disabled) {
+  border-color: var(--klein);
+  background: rgba(0, 47, 167, 0.075);
+}
+
+.vrep-page .video-upload-change:disabled { opacity: .5; cursor: default; }
+.vrep-page .video-upload-change svg { width: 15px; height: 15px; }
+
+@media (max-width: 720px) {
+  .vrep-page .video-upload-preview {
+    grid-template-columns: minmax(0, 96px) minmax(0, 1fr);
+  }
+  .vrep-page .video-upload-change { grid-column: 1 / -1; justify-content: center; }
+}
+
+/* 只给空态大图标撑到 28px:更换按钮里的小图标不能被这条盖掉 */
+.vrep-page .video-upload-trigger > svg {
   width: 28px;
   height: 28px;
   color: var(--klein);
@@ -251,6 +331,63 @@
   font-size: 12px;
 }
 
+/* 临时上传商品图:拖拽悬停沿用「已选中」的蓝框,再压一层底色区分 */
+.vrep-page .replace-temporary-method.is-dragover {
+  border-color: var(--klein);
+  background: rgba(0, 47, 167, 0.11);
+}
+
+/* 进页面先确认后端有没有在跑的任务。确认完之前不给看空表单,也不让提交 ——
+   否则用户以为没任务,又传一遍,重复扣费。 */
+/* 面板是 flex column,不给 flex:1 + min-height 就会顶在最上面、下面留一大块空 */
+.vrep-page .replace-restoring-state {
+  min-height: 470px;
+  flex: 1;
+  display: none;
+  place-items: center;
+  text-align: center;
+}
+
+/* 读取任务状态期间左侧整块不可操作:只锁提交按钮不够,用户照样能点/拖上传 */
+.vrep-page .replace-flow-panel.is-locked,
+.vrep-page .video-flow-panel.is-locked {
+  pointer-events: none;
+  opacity: 0.55;
+  filter: saturate(0.85);
+  transition: opacity 160ms ease;
+}
+
+.vrep-page .replace-result-panel.is-restoring .replace-restoring-state { display: grid; }
+
+.vrep-page .replace-result-panel.is-restoring .video-result-placeholder,
+.vrep-page .replace-result-panel.is-restoring .replace-generating-state,
+.vrep-page .replace-result-panel.is-restoring .video-analysis-result { display: none; }
+
+.vrep-page .replace-restoring-content {
+  display: grid;
+  justify-items: center;
+  gap: 10px;
+  width: min(280px, 100%);
+}
+
+.vrep-page .replace-restoring-content strong { color: var(--text); font-size: 16px; font-weight: 600; }
+.vrep-page .replace-restoring-content span:not(.replace-restoring-spinner) {
+  color: var(--muted);
+  font-size: 12px;
+  line-height: 1.55;
+}
+
+.vrep-page .replace-restoring-spinner {
+  width: 26px;
+  height: 26px;
+  border-radius: 50%;
+  border: 2px solid rgba(0, 47, 167, 0.16);
+  border-top-color: var(--klein);
+  animation: replace-restoring-spin 0.8s linear infinite;
+}
+
+@keyframes replace-restoring-spin { to { transform: rotate(360deg); } }
+
 .vrep-page .video-flow-actions {
   display: flex;
   align-items: center;
@@ -347,48 +484,23 @@
   transition: border-color 170ms ease, background-color 170ms ease, box-shadow 170ms ease, transform 170ms ease;
 }
 
-.vrep-page .replace-product-method::after {
-  content: "";
-  position: absolute;
-  inset: 0;
-  z-index: 1;
-  opacity: 0;
-  pointer-events: none;
-  background: linear-gradient(90deg, rgba(255, 255, 255, 0.24), rgba(255, 255, 255, 0.08));
-  transition: opacity 180ms ease;
+/* 选中商品后不再整块铺商品图:图一花文字就读不了,active 的蓝底也被盖没。
+   改成图标位直接放缩略图,文字保持全对比度。 */
+.vrep-page .replace-product-method-background { display: none; }
+
+.vrep-page .replace-product-method.has-product-preview .replace-product-method-icon {
+  padding: 0;
+  overflow: hidden;
+  border-color: rgba(0, 47, 167, 0.22);
+  background: #f1f5ff;
 }
 
-.vrep-page .replace-product-method.has-product-preview::after {
-  opacity: 1;
-}
-
-.vrep-page .replace-product-method > :not(.replace-product-method-background) {
-  position: relative;
-  z-index: 2;
-}
-
-.vrep-page .replace-product-method-background {
-  position: absolute;
-  inset: 0;
-  z-index: 0;
+.vrep-page .replace-product-method-icon img {
   width: 100%;
   height: 100%;
   display: block;
   object-fit: cover;
-  opacity: 0;
-  pointer-events: none;
-  transition: opacity 180ms ease;
-}
-
-.vrep-page .replace-product-method.has-product-preview .replace-product-method-background {
-  opacity: 0.5;
-}
-
-.vrep-page .replace-product-method.has-product-preview .replace-product-method-copy {
-  padding: 8px 10px;
-  border-radius: 9px;
-  background: rgba(255, 255, 255, 0.78);
-  backdrop-filter: blur(5px);
+  border-radius: inherit;
 }
 
 .vrep-page .replace-product-method:hover {