♻️ 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
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✅ 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/assets/utils/proxy.js

@@ -1,20 +0,0 @@
-function getProxyCode(options, isSSR) {
-  const stringifiedFSPath = JSON.stringify(options.fsPath);
-  return `
-						new Proxy(${JSON.stringify(options)}, {
-						get(target, name, receiver) {
-							if (name === 'clone') {
-								return structuredClone(target);
-							}
-							if (name === 'fsPath') {
-								return ${stringifiedFSPath};
-							}
-							${!isSSR ? `if (target[name] !== undefined && globalThis.astroAsset) globalThis.astroAsset?.referencedImages.add(${stringifiedFSPath});` : ""}
-							return target[name];
-						}
-					})
-					`;
-}
-export {
-  getProxyCode
-};