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>

nginx.conf

@@ -0,0 +1,39 @@
+worker_processes auto;
+events { worker_connections 1024; }
+
+http {
+  include       /etc/nginx/mime.types;
+  default_type  application/octet-stream;
+  sendfile      on;
+  keepalive_timeout 65;
+  gzip on;
+  gzip_types text/plain text/css application/javascript application/json image/svg+xml;
+  gzip_min_length 1024;
+
+  server {
+    listen 80 default_server;
+    server_name _;
+
+    root /usr/share/nginx/html;
+    index index.html;
+
+    auth_basic "Figma 模板库";
+    auth_basic_user_file /etc/nginx/.htpasswd;
+
+    # cache immutable assets
+    location ~* \.(jpg|jpeg|png|gif|webp|svg|woff2?|ttf|eot)$ {
+      expires 30d;
+      add_header Cache-Control "public, immutable";
+    }
+    location ~* \.(css|js)$ {
+      expires 7d;
+    }
+    location ~* \.json$ {
+      add_header Cache-Control "no-cache";
+    }
+
+    location / {
+      try_files $uri $uri/ =404;
+    }
+  }
+}