Properly exclude admin and tasks folders from 11ty template processing

Previous attempt still processed files in admin folder.
Now using ignores.add() for entire folders (admin/**, tasks/**)
so 11ty only copies them via passthrough, doesn't render as templates.

This prevents build failures on HTML files with React/JSX syntax.

.eleventy.js

@@ -4,15 +4,15 @@ module.exports = function(eleventyConfig) {
   eleventyConfig.addPassthroughCopy("src/css");
   eleventyConfig.addPassthroughCopy("assets");
   
-  // Decap CMS admin panel
+  // Decap CMS admin panel - copy entire folder without template processing
   eleventyConfig.addPassthroughCopy("admin");
   
-  // Mobile task manager - IGNORE, don't process as template
-  eleventyConfig.ignores.add("admin/mobile.html");
-  eleventyConfig.addPassthroughCopy("admin/mobile.html");
-  
-  // Tasks folder
+  // Tasks folder - copy without template processing
   eleventyConfig.addPassthroughCopy("tasks");
+  
+  // Tell 11ty to ignore these folders completely (don't try to render as templates)
+  eleventyConfig.ignores.add("admin/**");
+  eleventyConfig.ignores.add("tasks/**");
 
   return {
     dir: {