♻️ 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/v3/errors.cjs

@@ -1,17 +0,0 @@
-"use strict";
-var __importDefault = (this && this.__importDefault) || function (mod) {
-    return (mod && mod.__esModule) ? mod : { "default": mod };
-};
-Object.defineProperty(exports, "__esModule", { value: true });
-exports.defaultErrorMap = void 0;
-exports.setErrorMap = setErrorMap;
-exports.getErrorMap = getErrorMap;
-const en_js_1 = __importDefault(require("./locales/en.cjs"));
-exports.defaultErrorMap = en_js_1.default;
-let overrideErrorMap = en_js_1.default;
-function setErrorMap(map) {
-    overrideErrorMap = map;
-}
-function getErrorMap() {
-    return overrideErrorMap;
-}