clean: 清理notion文档资料中的重复文件

详细说明:
- 移除文旅和智能开发目录中的重复图片文件
- 清理font-awesome等前端资源文件
- 保留必要的文档和素材文件

影响模块:
- doc/notion文档资料/文旅/
- doc/notion文档资料/智能开发/

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

doc/文档资料/智能开发/附件项目/assets/font-awesome/scss/_screen-reader.scss

@@ -0,0 +1,14 @@
+// screen-reader utilities
+// -------------------------
+
+// only display content to screen readers
+.sr-only,
+.#{$fa-css-prefix}-sr-only {
+  @include fa-sr-only;
+}
+
+// use in conjunction with .sr-only to only display content when it's focused
+.sr-only-focusable,
+.#{$fa-css-prefix}-sr-only-focusable {
+  @include fa-sr-only-focusable;
+}