♻️ 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/zod-to-json-schema/dist/cjs/getRelativePath.js

@@ -1,12 +0,0 @@
-"use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
-exports.getRelativePath = void 0;
-const getRelativePath = (pathA, pathB) => {
-    let i = 0;
-    for (; i < pathA.length && i < pathB.length; i++) {
-        if (pathA[i] !== pathB[i])
-            break;
-    }
-    return [(pathA.length - i).toString(), ...pathB.slice(i)].join("/");
-};
-exports.getRelativePath = getRelativePath;