♻️ 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/is-inside-container/package.json

@@ -1,51 +0,0 @@
-{
-	"name": "is-inside-container",
-	"version": "1.0.0",
-	"description": "Check if the process is running inside a container (Docker/Podman)",
-	"license": "MIT",
-	"repository": "sindresorhus/is-inside-container",
-	"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"
-	},
-	"bin": "./cli.js",
-	"engines": {
-		"node": ">=14.16"
-	},
-	"scripts": {
-		"test": "xo && NODE_OPTIONS='--loader=esmock --no-warnings' ava && tsd"
-	},
-	"files": [
-		"index.js",
-		"index.d.ts",
-		"cli.js"
-	],
-	"keywords": [
-		"detect",
-		"inside",
-		"container",
-		"docker",
-		"dockerized",
-		"podman",
-		"is",
-		"env",
-		"environment",
-		"process"
-	],
-	"dependencies": {
-		"is-docker": "^3.0.0"
-	},
-	"devDependencies": {
-		"ava": "^5.2.0",
-		"esmock": "^2.1.0",
-		"tsd": "^0.25.0",
-		"xo": "^0.53.1"
-	}
-}