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/api/publicConfigClient.ts

@@ -1,51 +0,0 @@
-import { isOptionalApiRouteMissing } from "./apiErrorUtils";
-import { isRecord, serverRequest } from "./serverConnection";
-
-export interface WebPublicConfig {
-  contactEmail?: string;
-  contactPhone?: string;
-  companyAddress?: string;
-  icpRecord?: string;
-}
-
-function readString(config: Record<string, unknown>, keys: string[]): string | undefined {
-  for (const key of keys) {
-    const value = config[key];
-    if (typeof value === "string" && value.trim()) return value.trim();
-  }
-  return undefined;
-}
-
-function normalizePublicConfig(raw: unknown): WebPublicConfig {
-  const config = isRecord(raw) && isRecord(raw.config) ? raw.config : raw;
-  if (!isRecord(config)) return {};
-
-  return {
-    contactEmail: readString(config, ["contactEmail", "contact_email", "supportEmail", "support_email"]),
-    contactPhone: readString(config, ["contactPhone", "contact_phone", "supportPhone", "support_phone"]),
-    companyAddress: readString(config, ["companyAddress", "company_address", "address"]),
-    icpRecord: readString(config, ["icpRecord", "icp_record", "filingInfo", "filing_info"]),
-  };
-}
-
-let cachedPublicConfig: WebPublicConfig | null = null;
-let publicConfigRouteMissing = false;
-
-export const publicConfigClient = {
-  async get(): Promise<WebPublicConfig> {
-    if (cachedPublicConfig) return cachedPublicConfig;
-    if (publicConfigRouteMissing) return {};
-
-    try {
-      const payload = await serverRequest<unknown>("public/config/profile?name=web-public-config");
-      cachedPublicConfig = normalizePublicConfig(payload);
-      return cachedPublicConfig;
-    } catch (error) {
-      if (isOptionalApiRouteMissing(error)) {
-        publicConfigRouteMissing = true;
-        return {};
-      }
-      throw error;
-    }
-  },
-};