feat(promotion): social 素材同步 dist、迁移脚本与文档；Brochure 侧栏路由与文案

Made-with: Cursor

scripts/sync-video-assets-to-social.ps1

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+# 将 web/promotion/视频发布 中文路径素材复制到 web/promotion/social（英文文件名）
+# 用法：在项目根 powershell 执行 .\scripts\sync-video-assets-to-social.ps1
+$ErrorActionPreference = "Stop"
+$Root = [System.IO.Path]::GetFullPath((Join-Path $PSScriptRoot ".."))
+$Src = Join-Path $Root "web\promotion\视频发布"
+$Dst = Join-Path $Root "web\promotion\social"
+New-Item -ItemType Directory -Force -Path $Dst | Out-Null
+
+function Copy-IfExists($fromRel, $toName) {
+    $from = Join-Path $Src $fromRel
+    $to = Join-Path $Dst $toName
+    if (Test-Path -LiteralPath $from) {
+        Copy-Item -LiteralPath $from -Destination $to -Force
+        Write-Host "OK $toName"
+    } else {
+        Write-Warning "SKIP (缺失): $from"
+    }
+}
+
+Copy-IfExists "宇恒一号操作计算软件实例（一）\宣传片-封面.jpg" "video-calc-demo-1-cover.jpg"
+Copy-IfExists "宇恒一号操作计算软件实例（一）\宣传片.mov" "video-calc-demo-1.mov"
+Copy-IfExists "宇恒一号操作计算软件实例（二）\宇恒一号操作计算软件实例（二）-封面.jpg" "video-calc-demo-2-cover.jpg"
+Copy-IfExists "宇恒一号操作计算软件实例（二）\宇恒一号操作计算软件实例（二）.mov" "video-calc-demo-2.mov"
+Copy-IfExists "宇恒一号AIWord简介\宇恒一号AIWord简介-封面.jpg" "video-aiword-cover.jpg"
+Copy-IfExists "宇恒一号AIWord简介\宇恒一号AIWord简介.mov" "video-aiword.mov"
+Copy-IfExists "宇恒一号语音办公实例\宇恒一号语音办公实例-封面.jpg" "video-voice-office-cover.jpg"
+Copy-IfExists "宇恒一号语音办公实例\宇恒一号语音办公实例.mov" "video-voice-office.mov"
+Copy-IfExists "宇恒一号，AI 全自动办发票\宇恒一号，AI 全自动办发票-封面.jpg" "video-invoice-ai-cover.jpg"
+Copy-IfExists "宇恒一号，AI 全自动办发票\宇恒一号，AI 全自动办发票.mov" "video-invoice-ai.mov"
+
+Write-Host "完成。Linux 服务器上建议在 social 目录执行: chmod -R a+rX ."