feat(storyboard): 故事板改分镜制(单场独立重跑/历史)+ 视频过审闸 + 审核前端如实化

三块改动在 services/views/pipeline/App/api 等文件按行交织、且过审闸后端依赖故事板新
模型,无法拆成各自独立可编译的提交,故合并为一次:

· 故事板分镜制:新增 StoryboardShot/StoryboardShotVersion(对标 VideoSegment/Version)
  + 数据迁移(采用版每帧转一 shot+已采用版本)。每镜一个 shot,各自历史版本,可单场
  重跑、逐场切换/采用,新增「开始生成故事板/单场重跑/采用某版」端点。重跑非阻塞(后台
  静默轮询出图,不锁其它场按钮);历史「查看」与「采用」分离(切版本不丢在制重跑)。
  视频取分镜图/删分镜清理/过审闸全部改读 storyboard_shots。
· 视频生成前过审闸:点生成校验含真人脸的人物立绘/故事板分镜是否过审,未过审弹窗列出
  哪一镜/哪个,可一键送审,挡住不生成(collect_video_review_blockers + precheck 端点)。
· 审核前端如实化:不再 `|| "processing"` 伪造审核中;送审失败经 onNotify 如实提示;
  审核轮询扩到视频阶段,送审后能看着盾变绿。

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

core/backend/apps/projects/migrations/0005_storyboardshot_storyboardshotversion_and_more.py

@@ -0,0 +1,134 @@
+# Generated by Django 5.1.15 on 2026-06-24 08:01
+
+import django.db.models.deletion
+import uuid
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("ai", "0016_person_triview_16_9"),
+        ("assets", "0006_alter_asset_category_model"),
+        ("projects", "0004_project_projects_pr_team_id_e667f8_idx"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="StoryboardShot",
+            fields=[
+                (
+                    "id",
+                    models.UUIDField(
+                        default=uuid.uuid4,
+                        editable=False,
+                        primary_key=True,
+                        serialize=False,
+                    ),
+                ),
+                ("created_at", models.DateTimeField(auto_now_add=True)),
+                ("updated_at", models.DateTimeField(auto_now=True)),
+                ("sort_order", models.PositiveIntegerField(default=0)),
+                (
+                    "status",
+                    models.CharField(
+                        choices=[
+                            ("not_started", "Not Started"),
+                            ("queued", "Queued"),
+                            ("running", "Running"),
+                            ("succeeded", "Succeeded"),
+                            ("failed", "Failed"),
+                        ],
+                        default="not_started",
+                        max_length=32,
+                    ),
+                ),
+                ("prompt", models.TextField(blank=True)),
+                ("error_message", models.TextField(blank=True)),
+                (
+                    "project",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="storyboard_shots",
+                        to="projects.project",
+                    ),
+                ),
+                (
+                    "script_segment",
+                    models.ForeignKey(
+                        blank=True,
+                        null=True,
+                        on_delete=django.db.models.deletion.SET_NULL,
+                        related_name="storyboard_shots",
+                        to="projects.scriptsegment",
+                    ),
+                ),
+            ],
+            options={
+                "ordering": ["sort_order", "created_at"],
+            },
+        ),
+        migrations.CreateModel(
+            name="StoryboardShotVersion",
+            fields=[
+                (
+                    "id",
+                    models.UUIDField(
+                        default=uuid.uuid4,
+                        editable=False,
+                        primary_key=True,
+                        serialize=False,
+                    ),
+                ),
+                ("created_at", models.DateTimeField(auto_now_add=True)),
+                ("updated_at", models.DateTimeField(auto_now=True)),
+                ("prompt", models.TextField(blank=True)),
+                ("is_adopted", models.BooleanField(default=False)),
+                ("metadata", models.JSONField(blank=True, default=dict)),
+                (
+                    "asset",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.PROTECT,
+                        related_name="storyboard_shot_versions",
+                        to="assets.asset",
+                    ),
+                ),
+                (
+                    "shot",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="versions",
+                        to="projects.storyboardshot",
+                    ),
+                ),
+                (
+                    "task",
+                    models.ForeignKey(
+                        blank=True,
+                        null=True,
+                        on_delete=django.db.models.deletion.SET_NULL,
+                        related_name="storyboard_shot_versions",
+                        to="ai.aitask",
+                    ),
+                ),
+            ],
+            options={
+                "ordering": ["-created_at"],
+            },
+        ),
+        migrations.AddField(
+            model_name="storyboardshot",
+            name="adopted_version",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name="adopted_by_shots",
+                to="projects.storyboardshotversion",
+            ),
+        ),
+        migrations.AlterUniqueTogether(
+            name="storyboardshot",
+            unique_together={("project", "sort_order")},
+        ),
+    ]

core/backend/apps/projects/migrations/0006_migrate_storyboard_to_shots.py

@@ -0,0 +1,50 @@
+from django.db import migrations
+
+
+def forwards(apps, schema_editor):
+    """把旧「整版制」故事板迁到新「分镜制」:每个项目只取采用版(无采用版则取最新版)的每一帧,
+    建一个 StoryboardShot + 一条已采用 StoryboardShotVersion(沿用同一张图)。旧的其它整版历史丢弃。"""
+    Project = apps.get_model("projects", "Project")
+    StoryboardVersion = apps.get_model("projects", "StoryboardVersion")
+    StoryboardShot = apps.get_model("projects", "StoryboardShot")
+    StoryboardShotVersion = apps.get_model("projects", "StoryboardShotVersion")
+
+    for project in Project.objects.all().iterator():
+        adopted = (
+            StoryboardVersion.objects.filter(project=project, is_adopted=True).order_by("-created_at").first()
+            or StoryboardVersion.objects.filter(project=project).order_by("-created_at").first()
+        )
+        if adopted is None:
+            continue
+        seen_orders = set()
+        for frame in adopted.frames.order_by("sort_order", "created_at"):
+            if frame.sort_order in seen_orders:  # 同序帧只保第一张,守 (project, sort_order) 唯一约束
+                continue
+            seen_orders.add(frame.sort_order)
+            shot = StoryboardShot.objects.create(
+                project=project,
+                script_segment=frame.script_segment,
+                sort_order=frame.sort_order,
+                status="succeeded",
+                prompt=frame.prompt or "",
+            )
+            version = StoryboardShotVersion.objects.create(
+                shot=shot, asset=frame.asset, prompt=frame.prompt or "", is_adopted=True,
+            )
+            shot.adopted_version = version
+            shot.save(update_fields=["adopted_version"])
+
+
+def backwards(apps, schema_editor):
+    StoryboardShot = apps.get_model("projects", "StoryboardShot")
+    StoryboardShot.objects.all().delete()  # version 随 shot 级联删
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("projects", "0005_storyboardshot_storyboardshotversion_and_more"),
+    ]
+
+    operations = [
+        migrations.RunPython(forwards, backwards),
+    ]