♻️ 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/esbuild/package.json

@@ -1,49 +0,0 @@
-{
-  "name": "esbuild",
-  "version": "0.27.3",
-  "description": "An extremely fast JavaScript and CSS bundler and minifier.",
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/evanw/esbuild.git"
-  },
-  "scripts": {
-    "postinstall": "node install.js"
-  },
-  "main": "lib/main.js",
-  "types": "lib/main.d.ts",
-  "engines": {
-    "node": ">=18"
-  },
-  "bin": {
-    "esbuild": "bin/esbuild"
-  },
-  "optionalDependencies": {
-    "@esbuild/aix-ppc64": "0.27.3",
-    "@esbuild/android-arm": "0.27.3",
-    "@esbuild/android-arm64": "0.27.3",
-    "@esbuild/android-x64": "0.27.3",
-    "@esbuild/darwin-arm64": "0.27.3",
-    "@esbuild/darwin-x64": "0.27.3",
-    "@esbuild/freebsd-arm64": "0.27.3",
-    "@esbuild/freebsd-x64": "0.27.3",
-    "@esbuild/linux-arm": "0.27.3",
-    "@esbuild/linux-arm64": "0.27.3",
-    "@esbuild/linux-ia32": "0.27.3",
-    "@esbuild/linux-loong64": "0.27.3",
-    "@esbuild/linux-mips64el": "0.27.3",
-    "@esbuild/linux-ppc64": "0.27.3",
-    "@esbuild/linux-riscv64": "0.27.3",
-    "@esbuild/linux-s390x": "0.27.3",
-    "@esbuild/linux-x64": "0.27.3",
-    "@esbuild/netbsd-arm64": "0.27.3",
-    "@esbuild/netbsd-x64": "0.27.3",
-    "@esbuild/openbsd-arm64": "0.27.3",
-    "@esbuild/openbsd-x64": "0.27.3",
-    "@esbuild/openharmony-arm64": "0.27.3",
-    "@esbuild/sunos-x64": "0.27.3",
-    "@esbuild/win32-arm64": "0.27.3",
-    "@esbuild/win32-ia32": "0.27.3",
-    "@esbuild/win32-x64": "0.27.3"
-  },
-  "license": "MIT"
-}