fix: 修复多个运行时崩溃和功能bug，优化画布连接线和剧本评分

- 修复 EcommercePage generateEcommerceImage 调用不存在变量导致运行时崩溃
- 修复 DigitalHumanPage/ImageWorkbenchPage 变量名错误导致页面不可用
- 修复 ecommerceVideoService token 读取用错 key 导致请求 401
- 修复画布连接线在弹窗出现后仍跟随鼠标的问题
- 剧本评分 .docx 文件改为服务端 mammoth 解析（新增 /api/files/extract-text）
- ErrorBoundary 加 key 支持切换页面时自动重置
- Vite proxy 改为指向公网域名 omniai.net.cn
- 新增视频生成历史记录面板和删除确认弹窗

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/features/ecommerce/ecommerceVideoService.ts

@@ -258,3 +258,73 @@ export function buildSceneTasks(
     };
   });
 }
+
+// ── Video History API ──────────────────────────────────
+
+export interface VideoHistoryScene {
+  sceneId: number;
+  prompt: string;
+  imageUrl?: string | null;
+  videoUrl?: string | null;
+}
+
+export interface VideoHistoryItem {
+  id: number;
+  title: string;
+  config: Record<string, unknown>;
+  scenes: VideoHistoryScene[];
+  sourceImageUrls: string[];
+  createdAt: string;
+}
+
+export interface VideoHistoryListResponse {
+  items: VideoHistoryItem[];
+  total: number;
+  limit: number;
+  offset: number;
+}
+
+import { getStoredToken } from "../../api/serverConnection";
+
+const API_BASE = "/api/ai/ecommerce/video-history";
+
+function getAuthHeaders(): Record<string, string> {
+  const token = getStoredToken();
+  return token ? { Authorization: `Bearer ${token}` } : {};
+}
+
+export async function saveVideoHistory(payload: {
+  title: string;
+  config: Record<string, unknown>;
+  plan: Record<string, unknown>;
+  scenes: VideoHistoryScene[];
+  sourceImageUrls: string[];
+}): Promise<{ id: number; createdAt: string }> {
+  const res = await fetch(API_BASE, {
+    method: "POST",
+    headers: { "Content-Type": "application/json", ...getAuthHeaders() },
+    body: JSON.stringify(payload),
+  });
+  if (!res.ok) throw new Error("保存历史记录失败");
+  return res.json();
+}
+
+export async function fetchVideoHistory(
+  limit = 20,
+  offset = 0,
+): Promise<VideoHistoryListResponse> {
+  const res = await fetch(
+    `${API_BASE}?limit=${limit}&offset=${offset}`,
+    { headers: getAuthHeaders() },
+  );
+  if (!res.ok) throw new Error("获取历史记录失败");
+  return res.json();
+}
+
+export async function deleteVideoHistory(id: number): Promise<void> {
+  const res = await fetch(`${API_BASE}/${id}`, {
+    method: "DELETE",
+    headers: getAuthHeaders(),
+  });
+  if (!res.ok) throw new Error("删除失败");
+}