feat(review): 故事板分镜图挂火山人像审核盾 + 红盾可重新送审

- 后端 StoryboardFrameSerializer 暴露 review_status + 驳回原因(之前没给,前端画不出盾)
- 前端故事板趴:每张分镜图(缩略图角上只留盾 / 大图左上完整徽章)挂 ReviewBadge,
  与人物/场景卡同款(审核中橙光 / 已过审绿 / 未过审红);故事板趴每 8s 轮询刷新审核态
- ReviewBadge:红盾(未过审)也可点「重新送审」——「审核超时」是误判(分镜图在 processing
  卡太久被本地超时兜底标失败,非火山真违规),重提即可再审;灰盾/红盾两处(分镜图+人物卡)行为一致
- compact 模式:嵌在 overflow:hidden 容器里的盾(分镜图)改用原生 title 提示,避免 CSS 气泡被裁看不见

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

core/frontend/src/pipeline-page.css

@@ -411,6 +411,10 @@
   .sb-gen-veil { position: absolute; inset: 0; z-index: 3; display: grid; place-items: center; border-radius: inherit; pointer-events: none; background: color-mix(in srgb, var(--surface) 62%, transparent); }
   .sb-scene-thumb .sb-gen-veil .spinner { width: 16px; height: 16px; }
   .sb-main-img .sb-gen-veil .spinner { width: 28px; height: 28px; }
+  /* 分镜图火山人像审核盾:缩略图角上只留盾(省地方),大图左上挂完整徽章 */
+  .sb-scene-thumb .placeholder .sb-frame-rv { position: absolute; top: 4px; left: 4px; z-index: 4; transform: scale(.82); transform-origin: top left; }
+  .sb-scene-thumb .placeholder .sb-frame-rv .rv-label { display: none; }
+  .sb-main-img .sb-main-rv { position: absolute; top: 10px; left: 10px; z-index: 4; }
 
   .sb-rerun-note { display: flex; align-items: flex-start; gap: 10px; padding: 10px 12px; margin-bottom: 14px; background: rgba(180,83,9,.08); border: 1px solid rgba(180,83,9,.20); border-radius: var(--r-md); color: #7C3A05; line-height: 1.55; }
   .sb-rerun-note .warn-ic { width: 22px; height: 22px; border-radius: var(--r-sm); background: rgba(180,83,9,.12); color: #B45309; display: grid; place-items: center; flex: 0 0 22px; }