♻️ 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/prismjs/plugins/command-line/prism-command-line.css

@@ -1,43 +0,0 @@
-.command-line-prompt {
-	border-right: 1px solid #999;
-	display: block;
-	float: left;
-	font-size: 100%;
-	letter-spacing: -1px;
-	margin-right: 1em;
-	pointer-events: none;
-	text-align: right;
-
-	-webkit-user-select: none;
-	-moz-user-select: none;
-	-ms-user-select: none;
-	user-select: none;
-}
-
-.command-line-prompt > span:before {
-	opacity: 0.7;
-	content: ' ';
-	display: block;
-	padding-right: 0.8em;
-}
-
-.command-line-prompt > span[data-user]:before {
-	content: "[" attr(data-user) "@" attr(data-host) "] $";
-}
-
-.command-line-prompt > span[data-user="root"]:before {
-	content: "[" attr(data-user) "@" attr(data-host) "] #";
-}
-
-.command-line-prompt > span[data-prompt]:before {
-	content: attr(data-prompt);
-}
-
-.command-line-prompt > span[data-continuation-prompt]:before {
-	content: attr(data-continuation-prompt);
-}
-
-.command-line span.token.output {
-	/* Make shell output lines a bit lighter to distinguish them from shell commands */
-	opacity: 0.7;
-}