♻️ 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/estree-walker/package.json

@@ -1,38 +0,0 @@
-{
-	"name": "estree-walker",
-	"description": "Traverse an ESTree-compliant AST",
-	"version": "3.0.3",
-	"private": false,
-	"author": "Rich Harris",
-	"license": "MIT",
-	"repository": {
-		"type": "git",
-		"url": "https://github.com/Rich-Harris/estree-walker"
-	},
-	"type": "module",
-	"module": "./src/index.js",
-	"exports": {
-		"./package.json": "./package.json",
-		".": {
-			"types": "./types/index.d.ts",
-			"import": "./src/index.js"
-		}
-	},
-	"types": "types/index.d.ts",
-	"scripts": {
-		"prepublishOnly": "tsc && npm test",
-		"test": "uvu test"
-	},
-	"dependencies": {
-		"@types/estree": "^1.0.0"
-	},
-	"devDependencies": {
-		"typescript": "^4.9.0",
-		"uvu": "^0.5.1"
-	},
-	"files": [
-		"src",
-		"types",
-		"README.md"
-	]
-}