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-ebnf.js

@@ -0,0 +1,22 @@
+Prism.languages.ebnf = {
+	'comment': /\(\*[\s\S]*?\*\)/,
+	'string': {
+		pattern: /"[^"\r\n]*"|'[^'\r\n]*'/,
+		greedy: true
+	},
+	'special': {
+		pattern: /\?[^?\r\n]*\?/,
+		greedy: true,
+		alias: 'class-name'
+	},
+
+	'definition': {
+		pattern: /^([\t ]*)[a-z]\w*(?:[ \t]+[a-z]\w*)*(?=\s*=)/im,
+		lookbehind: true,
+		alias: ['rule', 'keyword']
+	},
+	'rule': /\b[a-z]\w*(?:[ \t]+[a-z]\w*)*\b/i,
+
+	'punctuation': /\([:/]|[:/]\)|[.,;()[\]{}]/,
+	'operator': /[-=|*/!]/
+};