feat: 初始化 Figma 模板库 56 套展示站

- 56 套模板元数据（35 Figma 原生 + 21 非 Figma）
- 静态展示站 (HTML/CSS/JS 无框架)：格式筛选、lightbox、搜索
- 35 个 .fig 已真上传 Figma Drafts 云端
- iframe 实时投射（登录态可看私有 Drafts）
- 部署：nginx:alpine + basic-auth (kang)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,10 @@
+# keep repo lean — source archives + extracted are local only
+source/
+extracted/
+.DS_Store
+__pycache__/
+*.pyc
+.playwright-mcp/
+
+# generated manifests stay in repo so site works on fresh clone
+# (manifest.json, figma-files.json, figma-match-report.json, web/)