Refactor Dropdown Handlers and Update WordPress Integration

- Updated dropdown onChange handlers across multiple components to use direct value passing instead of event target value for improved clarity and consistency.
- Changed `url` to `site_url` in WordPress integration configuration for better semantic clarity.
- Enhanced Vite configuration to include `fast-deep-equal` for compatibility with `react-dnd`.
- Updated navigation paths in `SiteContentEditor` and `SiteList` for consistency with new routing structure.

frontend/vite.config.ts

@@ -120,6 +120,8 @@ export default defineConfig(({ mode, command }) => {
         "zustand/middleware", // Required for persist middleware used in stores
         // Include apexcharts for proper module resolution (skip during marketing-only build)
         ...(isMarketingBuild ? [] : ["apexcharts", "react-apexcharts"]),
+        // Force include fast-deep-equal for react-dnd compatibility
+        "fast-deep-equal",
       ],
       // Exclude heavy dependencies that are only used in specific pages
       // They will be lazy-loaded when needed
@@ -132,8 +134,6 @@ export default defineConfig(({ mode, command }) => {
         "@fullcalendar/timegrid",
         "@react-jvectormap/core",
         "@react-jvectormap/world",
-        "react-dnd",
-        "react-dnd-html5-backend",
         "swiper",
       ],
       esbuildOptions: {