Add documentation and scripts

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/update-github-token.ps1

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+# 更新 GitHub Token 脚本
+# 用途：更新 Git 远程 URL 中的 token
+
+param(
+    [Parameter(Mandatory=$true)]
+    [string]$NewToken
+)
+
+Write-Host "=== 更新 GitHub Token ===" -ForegroundColor Cyan
+Write-Host ""
+
+# 验证 token 格式
+if ($NewToken -notmatch '^ghp_[A-Za-z0-9]{36}$') {
+    Write-Host "警告: Token 格式可能不正确（应以 ghp_ 开头）" -ForegroundColor Yellow
+    $continue = Read-Host "是否继续? (y/n)"
+    if ($continue -ne "y" -and $continue -ne "Y") {
+        exit 1
+    }
+}
+
+# 更新远程 URL
+Write-Host "更新 Git 远程 URL..." -ForegroundColor Yellow
+git remote set-url origin "https://bujie9527:${NewToken}@github.com/bujie9527/wecom-ai-assistant.git"
+
+Write-Host "✓ 远程 URL 已更新" -ForegroundColor Green
+
+# 验证
+Write-Host ""
+Write-Host "验证远程配置:" -ForegroundColor Cyan
+$remoteUrl = git remote get-url origin
+# 隐藏 token 显示
+$safeUrl = $remoteUrl -replace ':(ghp_[^@]+)@', ':****@'
+Write-Host "  $safeUrl" -ForegroundColor Gray
+
+# 更新配置文件
+Write-Host ""
+Write-Host "更新配置文件..." -ForegroundColor Yellow
+$configFile = ".github-config"
+if (Test-Path $configFile) {
+    $content = Get-Content $configFile
+    $newContent = $content | ForEach-Object {
+        if ($_ -match '^GITHUB_TOKEN=') {
+            "GITHUB_TOKEN=${NewToken}"
+        } else {
+            $_
+        }
+    }
+    $newContent | Set-Content $configFile
+    Write-Host "✓ 配置文件已更新" -ForegroundColor Green
+} else {
+    Write-Host "⚠ 配置文件不存在，跳过更新" -ForegroundColor Yellow
+}
+
+Write-Host ""
+Write-Host "=== 完成 ===" -ForegroundColor Green
+Write-Host ""
+Write-Host "现在可以尝试推送:" -ForegroundColor Cyan
+Write-Host "  git push -u origin main" -ForegroundColor Gray
+Write-Host ""
+Write-Host "如果仍然遇到权限问题，请确认 token 包含以下权限:" -ForegroundColor Yellow
+Write-Host "  - repo (完整仓库访问)" -ForegroundColor Gray
+Write-Host "  - workflow (工作流权限) ← 必需" -ForegroundColor Gray
+Write-Host "  - write:packages (推送镜像)" -ForegroundColor Gray
+Write-Host "  - read:packages (拉取镜像)" -ForegroundColor Gray