解决已发现问题

core/backend/apps/ai/creation.py

@@ -103,10 +103,32 @@ def _message_task(message: CreationMessage):
 @transaction.atomic
 def fail_generating_message(message: CreationMessage, error: str) -> CreationMessage:
     """生成失败:GENERATING 原地改成 ERROR,不另开一条,避免中间态刷屏。"""
+    is_person_reference = (message.payload or {}).get("kind") == "person_reference"
     message.kind = CreationMessage.Kind.ERROR
     message.text = (error or "生成失败")[:500]
     message.save(update_fields=["kind", "text", "updated_at"])
     conversation = message.conversation
+    if is_person_reference:
+        memory = dict(conversation.memory or {})
+        memory["person_source_pending"] = False
+        memory.pop("person_source_ready", None)
+        conversation.memory = memory
+        conversation.status = CreationConversation.Status.RUNNING
+        conversation.agent_status = CreationConversation.AgentStatus.AWAITING_USER
+        conversation.last_active_at = timezone.now()
+        conversation.save(update_fields=[
+            "memory", "status", "agent_status", "last_active_at", "updated_at",
+        ])
+        append_message(
+            conversation,
+            role="assistant",
+            text="这次人物参考没生成成功。可以重新选择人物来源。",
+            payload={
+                "reply_hint": "选择一种方式继续…",
+                "reply_options": [{"label": "重新选择人物", "text": "重新选择人物来源"}],
+            },
+        )
+        return message
     conversation.status = CreationConversation.Status.FAILED
     conversation.last_active_at = timezone.now()
     conversation.save(update_fields=["status", "last_active_at", "updated_at"])
@@ -141,7 +163,13 @@ def sync_generating_message(message: CreationMessage) -> bool:
         finish_generating_message(message, assets=assets, meta=_meta_from_task(task, message))
         return True
     if task.status in (AITask.Status.FAILED, AITask.Status.CANCELLED):
-        fail_generating_message(message, task.error_message or "生成失败")
+        from .generation_errors import public_error_for_task
+
+        public_error = public_error_for_task(task)
+        fail_generating_message(
+            message,
+            public_error.fallback_message if public_error else (task.error_message or "生成失败"),
+        )
         return True
     return False
 
@@ -187,8 +215,12 @@ def _sync_segmented_video_message(message: CreationMessage) -> bool:
         None,
     )
     if failed is not None:
+        from .generation_errors import public_error_for_task
+
         number = next((index + 1 for index, task in enumerate(refreshed) if task.id == failed.id), 1)
-        fail_generating_message(message, f"第 {number} 段生成失败：{failed.error_message or '请重试'}")
+        public_error = public_error_for_task(failed, operation="video_generate")
+        detail = public_error.fallback_message if public_error else (failed.error_message or "请重试")
+        fail_generating_message(message, f"第 {number} 段生成失败：{detail}")
         return True
     assets: list[dict] = []
     completed_segments = 0
@@ -397,10 +429,68 @@ def finish_generating_message(message: CreationMessage, *, assets: list[dict], m
     重生成是**新开一条** GENERATING → RESULT,所以对话流仍然是往下叠加;
     这里改的只是同一次生成自己的中间态。
     """
+    original_payload = dict(message.payload or {})
+    is_person_reference = original_payload.get("kind") == "person_reference"
     message.kind = CreationMessage.Kind.RESULT
-    message.payload = {**(message.payload or {}), **meta, "assets": assets}
+    message.payload = {**original_payload, **meta, "assets": assets}
     message.save(update_fields=["kind", "payload", "updated_at"])
     conversation = message.conversation
+    if is_person_reference:
+        from apps.assets.models import Asset, Model
+
+        asset_id = str((assets[0] if assets else {}).get("id") or "")
+        asset = Asset.objects.filter(
+            id=asset_id,
+            team=conversation.team,
+            is_deleted=False,
+            purged_at__isnull=True,
+        ).first()
+        if asset is None:
+            return fail_generating_message(message, "人物参考已生成，但未找到可锁定的图片资产")
+        model = Model.objects.filter(
+            team=conversation.team,
+            portrait_asset=asset,
+            is_deleted=False,
+            purged_at__isnull=True,
+        ).first()
+        if model is None:
+            model = Model.objects.create(
+                team=conversation.team,
+                created_by=conversation.created_by,
+                name="平台生成出镜人物",
+                source=Model.Source.AI,
+                portrait_asset=asset,
+                description="由全能创作生成并锁定的视频出镜人物。",
+                metadata={"feature": "omni_create", "conversation_id": str(conversation.id)},
+            )
+        pin_refs(conversation, [{
+            "type": "model",
+            "id": str(model.id),
+            "name": model.name,
+            "cover": (assets[0] if assets else {}).get("cover") or (assets[0] if assets else {}).get("url") or "",
+        }])
+        memory = dict(conversation.memory or {})
+        memory["person_source"] = "platform_generate"
+        memory["person_source_pending"] = False
+        memory["person_source_ready"] = True
+        memory["person_model_id"] = str(model.id)
+        conversation.memory = memory
+        conversation.status = CreationConversation.Status.RUNNING
+        conversation.agent_status = CreationConversation.AgentStatus.AWAITING_USER
+        conversation.last_active_at = timezone.now()
+        conversation.save(update_fields=[
+            "memory", "status", "agent_status", "last_active_at", "updated_at",
+        ])
+        append_message(
+            conversation,
+            role="assistant",
+            text="人物参考已生成并锁定。后续所有镜头和长视频分段都会使用这位人物。",
+            payload={
+                "reply_hint": "继续创作…",
+                "reply_options": [{"label": "继续创作", "text": "继续创作"}],
+            },
+        )
+        return message
     conversation.status = CreationConversation.Status.COMPLETED
     conversation.last_active_at = timezone.now()
     conversation.save(update_fields=["status", "last_active_at", "updated_at"])