♻️ 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/escape-string-regexp/package.json

@@ -1,40 +0,0 @@
-{
-	"name": "escape-string-regexp",
-	"version": "5.0.0",
-	"description": "Escape RegExp special characters",
-	"license": "MIT",
-	"repository": "sindresorhus/escape-string-regexp",
-	"funding": "https://github.com/sponsors/sindresorhus",
-	"author": {
-		"name": "Sindre Sorhus",
-		"email": "sindresorhus@gmail.com",
-		"url": "https://sindresorhus.com"
-	},
-	"type": "module",
-	"exports": "./index.js",
-	"engines": {
-		"node": ">=12"
-	},
-	"scripts": {
-		"test": "xo && ava && tsd"
-	},
-	"files": [
-		"index.js",
-		"index.d.ts"
-	],
-	"keywords": [
-		"escape",
-		"regex",
-		"regexp",
-		"regular",
-		"expression",
-		"string",
-		"special",
-		"characters"
-	],
-	"devDependencies": {
-		"ava": "^3.15.0",
-		"tsd": "^0.14.0",
-		"xo": "^0.38.2"
-	}
-}