refactor: Move Astro to root, use PORT env (default 80), allow all hosts

- Move Astro files from dealplustech-astro/ to project root
- Update Dockerfile: PORT environment variable (default 80)
- Add vite.config.ts with allowedHosts: true
- Matches nixpacks behavior for Easypanel deployment
- No hardcoded ports or domains

node_modules/prismjs/components/prism-php-extras.js

@@ -0,0 +1,14 @@
+Prism.languages.insertBefore('php', 'variable', {
+	'this': {
+		pattern: /\$this\b/,
+		alias: 'keyword'
+	},
+	'global': /\$(?:GLOBALS|HTTP_RAW_POST_DATA|_(?:COOKIE|ENV|FILES|GET|POST|REQUEST|SERVER|SESSION)|argc|argv|http_response_header|php_errormsg)\b/,
+	'scope': {
+		pattern: /\b[\w\\]+::/,
+		inside: {
+			'keyword': /\b(?:parent|self|static)\b/,
+			'punctuation': /::|\\/
+		}
+	}
+});