refactor: remove combined CSS file writing and optimize page-specific CSS handling in prerender logic

prerender.cjs

@@ -103,7 +103,6 @@ const shopConfig = require("./src/config.js").default;
 const { renderPage } = require("./prerender/renderer.cjs");
 const {
   collectAllCategories,
-  writeCombinedCssFile,
 } = require("./prerender/utils.cjs");
 const {
   generateProductMetaTags,
@@ -642,8 +641,7 @@ const renderApp = async (categoryData, socket) => {
     );
   }
 
-  // Write the combined CSS file after all pages are rendered
-  writeCombinedCssFile(config.globalCssCollection, config.outputDir);
+  // No longer writing combined CSS file - each page has its own embedded CSS
 
   // Generate XML sitemap with all rendered pages
   console.log("\n🗺️ Generating XML sitemap...");