feat: Add subdirectory hosting support and fix asset path resolution

- Update README with comprehensive subdirectory hosting instructions and BASE_URL configuration guide
- Convert absolute asset paths to relative paths in index.html for proper subdirectory deployment
- Update all worker script imports to use relative paths instead of absolute paths
- Fix favicon and image references to work correctly when hosted in nested directories
- Normalize whitespace and formatting across worker files for consistency
- Update vite.config.ts to properly handle BASE_URL configuration for subdirectory deployments
- Ensure all tool pages and logic files maintain compatibility with subdirectory hosting
- Enable BentoPDF to be deployed at any URL path (e.g., example.com/tools/bentopdf/) without breaking asset loading

src/pages/pdf-multi-tool.html

@@ -46,9 +46,9 @@
     <div class="container mx-auto px-4">
       <div class="flex justify-between items-center h-16">
         <div class="flex-shrink-0 flex items-center">
-          <img src="../../public/images/favicon.svg" alt="Bento PDF Logo" class="h-8 w-8" />
+          <img src="../../images/favicon.svg" alt="Bento PDF Logo" class="h-8 w-8" />
           <span class="text-white font-bold text-xl ml-2">
-            <a href="/">BentoPDF</a>
+            <a href="../../index.html">BentoPDF</a>
           </span>
           <span class="text-gray-400 ml-3 text-sm sm:text-base">PDF Multi Tool</span>
         </div>