♻️ Restructure: Move Astro to repository root

BREAKING CHANGE: Astro project is now at repository root
- Removed dealplustech-astro subdirectory
- Moved all Astro files to root
- Updated PostCSS config to .cjs
- Removed old Next.js files

✅ 11 pages built successfully
✅ Cookie consent banner included
✅ Privacy/Terms links in footer
✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/astro/dist/content/index.js

@@ -1,15 +0,0 @@
-import { attachContentServerListeners } from "./server-listeners.js";
-import { createContentTypesGenerator } from "./types-generator.js";
-import { getContentPaths, hasAssetPropagationFlag } from "./utils.js";
-import { astroContentAssetPropagationPlugin } from "./vite-plugin-content-assets.js";
-import { astroContentImportPlugin } from "./vite-plugin-content-imports.js";
-import { astroContentVirtualModPlugin } from "./vite-plugin-content-virtual-mod.js";
-export {
-  astroContentAssetPropagationPlugin,
-  astroContentImportPlugin,
-  astroContentVirtualModPlugin,
-  attachContentServerListeners,
-  createContentTypesGenerator,
-  getContentPaths,
-  hasAssetPropagationFlag
-};