♻️ 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/is-fullwidth-code-point/package.json

@@ -1,42 +0,0 @@
-{
-	"name": "is-fullwidth-code-point",
-	"version": "3.0.0",
-	"description": "Check if the character represented by a given Unicode code point is fullwidth",
-	"license": "MIT",
-	"repository": "sindresorhus/is-fullwidth-code-point",
-	"author": {
-		"name": "Sindre Sorhus",
-		"email": "sindresorhus@gmail.com",
-		"url": "sindresorhus.com"
-	},
-	"engines": {
-		"node": ">=8"
-	},
-	"scripts": {
-		"test": "xo && ava && tsd-check"
-	},
-	"files": [
-		"index.js",
-		"index.d.ts"
-	],
-	"keywords": [
-		"fullwidth",
-		"full-width",
-		"full",
-		"width",
-		"unicode",
-		"character",
-		"string",
-		"codepoint",
-		"code",
-		"point",
-		"is",
-		"detect",
-		"check"
-	],
-	"devDependencies": {
-		"ava": "^1.3.1",
-		"tsd-check": "^0.5.0",
-		"xo": "^0.24.0"
-	}
-}