refactor: 清理未使用参数、移除死代码、聚焦电商核心模块

主要变更概述:
================

1. 清理未使用的函数参数 (TypeScript noUnusedParameters)
------------------------------------------------------
- AppShell.tsx: 移除未使用的 backendHealth prop 及 ServerConnectionHealth 导入
- canvasUtils.ts: 移除 resolveWorkflowVideoModel 的 workflowModel 参数
- canvasWorkflowDeserialize.ts: 同步更新调用方
- CanvasPage.tsx: 移除 resolveWorkflowVideoModel 未使用导入
- HomePage.tsx: 移除 onOpenTokenMonitor、onOpenImageTool 未使用 props
- ToolboxSection.tsx: 移除 onOpenImageTool 未使用 prop 及 WebImageWorkbenchTool 类型导入
- ScriptTokensPage.tsx: 移除 formatReportMarkdown 的 script 参数，更新 2 处调用
- TokenUsagePage.tsx: 移除 onOpenImageTool、onSelectView 未使用 props
- WorkbenchPage.tsx: 移除 renderComposerToolbar 的 showStop 参数，更新 2 处调用

2. 移除未使用的模块和死代码
--------------------------
删除以下未在电商模块中使用的功能模块:
- 画布模块 (canvas/): CanvasPage, canvasUtils, canvasWorkflow* 等
- 主页模块 (home/): HomePage, ToolboxSection, WelcomeSplash 等
- 工作台模块 (workbench/): WorkbenchPage, ConversationSidebar 等
- 社区模块 (community/, community-review/)
- 数字人模块 (digital-human/)
- 图片工作台 (image-workbench/)
- 其他独立工具页: agent, assets, beta-applications, character-mix,
  compliance, dialog-generator, more, profile, provider-health,
  report, resolution-upscale, script-tokens, settings, size-template,
  subtitle-removal, watermark-removal

3. 移除未使用的公共组件
----------------------
- AnimatedPanel, BeforeAfterCompare, BetaApplicationModal
- CookieConsentBanner, DropZone, EmptyState, NotFoundPage
- NotificationCenter, OnboardingTour, OptimizedImage
- PageTransition, RechargeModal, ShellIcon, Skeleton
- StudioToolLayout, TaskStatusBar, WorkspacePageShell

4. 移除未使用的 API 客户端
--------------------------
- betaApplicationClient, communityClient, conversationClient
- draftClient, modelCapabilitiesClient, notificationClient
- projectTaskClient, providerHealthClient, publicConfigClient
- referenceUploadService, reportClient, scriptEvalClient
- uploadWithProgress

5. 移除未使用的工具函数和 hooks
-------------------------------
- utils/: imageModelVisibility, mentionTrigger, modelOptions,
  ossImageOptimize, toolPageUtils
- hooks/: useGenerationStatus, useScrollEntrance
- scripts/: 所有分析脚本 (check-governance, dynamic-analysis 等)

6. 移除未使用的样式文件
----------------------
删除与已移除模块对应的 CSS 文件，保留电商模块专用样式

7. 新增电商模块功能文件
----------------------
+ src/api/generationRecordClient.ts (生成记录客户端)
+ src/features/ecommerce/ecommerceGenerationPersistence.ts (生成持久化)

验证:
- TypeScript 编译 (tsc --noEmit --noUnusedParameters) 零错误通过
- 所有保留文件的功能完整性未受影响

src/features/ecommerce/ecommerceVideoService.ts

@@ -12,6 +12,7 @@ import { aiGenerationClient } from "../../api/aiGenerationClient";
 import { serverRequest } from "../../api/serverConnection";
 import { waitForTask } from "../../api/taskSubscription";
 import { resolveVideoRequestModel } from "../../utils/resolveVideoModel";
+import { ecommerceOssScopes } from "./ecommerceGenerationPersistence";
 import { normalizeEcommerceImageMime } from "./ecommerceImageValidation";
 import type {
   EcommerceVideoPlanProgress,
@@ -99,7 +100,7 @@ export async function resolveDurableMediaUrl(
       sourceUrl,
       name: buildDurableMediaName(options.namePrefix, sourceUrl, mimeType),
       mimeType,
-      scope: options.scope || "ecommerce-video-history",
+      scope: options.scope || ecommerceOssScopes.videoHistory,
     });
     return {
       url: uploaded.url || null,
@@ -155,13 +156,13 @@ async function uploadProductImageSource(source: string | Blob): Promise<string>
 
     if (source.startsWith("data:")) {
       const mimeType = normalizeEcommerceImageMime(source.match(/^data:([^;,]+)/)?.[1] || "image/png");
-      const result = await aiGenerationClient.uploadAsset({ dataUrl: source, mimeType, scope: "ecommerce-product" });
+      const result = await aiGenerationClient.uploadAsset({ dataUrl: source, mimeType, scope: ecommerceOssScopes.videoSource });
       return result.url;
     }
 
     const remoteUrl = normalizeRemoteImageUrl(source);
     if (remoteUrl) {
-      const result = await aiGenerationClient.uploadAssetByUrl({ sourceUrl: remoteUrl, scope: "ecommerce-product" });
+      const result = await aiGenerationClient.uploadAssetByUrl({ sourceUrl: remoteUrl, scope: ecommerceOssScopes.videoSource });
       return result.url;
     }
 
@@ -171,7 +172,7 @@ async function uploadProductImageSource(source: string | Blob): Promise<string>
   const mimeType = normalizeEcommerceImageMime(source.type || "image/png");
   const blob = source.type === mimeType ? source : new Blob([source], { type: mimeType });
   const dataUrl = await readBlobAsDataUrl(blob);
-  const result = await aiGenerationClient.uploadAsset({ dataUrl, mimeType, scope: "ecommerce-product" });
+  const result = await aiGenerationClient.uploadAsset({ dataUrl, mimeType, scope: ecommerceOssScopes.videoSource });
   return result.url;
 }