♻️ 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-wsl/package.json

@@ -1,58 +0,0 @@
-{
-	"name": "is-wsl",
-	"version": "3.1.1",
-	"description": "Check if the process is running inside Windows Subsystem for Linux (Bash on Windows)",
-	"license": "MIT",
-	"repository": "sindresorhus/is-wsl",
-	"funding": "https://github.com/sponsors/sindresorhus",
-	"author": {
-		"name": "Sindre Sorhus",
-		"email": "sindresorhus@gmail.com",
-		"url": "https://sindresorhus.com"
-	},
-	"type": "module",
-	"exports": {
-		"types": "./index.d.ts",
-		"default": "./index.js"
-	},
-	"sideEffects": false,
-	"engines": {
-		"node": ">=16"
-	},
-	"scripts": {
-		"test": "xo && ava && tsd"
-	},
-	"files": [
-		"index.js",
-		"index.d.ts"
-	],
-	"keywords": [
-		"check",
-		"wsl",
-		"windows",
-		"subsystem",
-		"linux",
-		"detect",
-		"bash",
-		"process",
-		"console",
-		"terminal",
-		"is"
-	],
-	"dependencies": {
-		"is-inside-container": "^1.0.0"
-	},
-	"devDependencies": {
-		"ava": "^5.3.1",
-		"esmock": "^2.3.6",
-		"tsd": "^0.28.1",
-		"xo": "^0.55.1"
-	},
-	"ava": {
-		"serial": true,
-		"nodeArguments": [
-			"--loader=esmock",
-			"--no-warnings"
-		]
-	}
-}