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-nginx.js

@@ -0,0 +1,54 @@
+(function (Prism) {
+
+	var variable = /\$(?:\w[a-z\d]*(?:_[^\x00-\x1F\s"'\\()$]*)?|\{[^}\s"'\\]+\})/i;
+
+	Prism.languages.nginx = {
+		'comment': {
+			pattern: /(^|[\s{};])#.*/,
+			lookbehind: true,
+			greedy: true
+		},
+		'directive': {
+			pattern: /(^|\s)\w(?:[^;{}"'\\\s]|\\.|"(?:[^"\\]|\\.)*"|'(?:[^'\\]|\\.)*'|\s+(?:#.*(?!.)|(?![#\s])))*?(?=\s*[;{])/,
+			lookbehind: true,
+			greedy: true,
+			inside: {
+				'string': {
+					pattern: /((?:^|[^\\])(?:\\\\)*)(?:"(?:[^"\\]|\\.)*"|'(?:[^'\\]|\\.)*')/,
+					lookbehind: true,
+					greedy: true,
+					inside: {
+						'escape': {
+							pattern: /\\["'\\nrt]/,
+							alias: 'entity'
+						},
+						'variable': variable
+					}
+				},
+				'comment': {
+					pattern: /(\s)#.*/,
+					lookbehind: true,
+					greedy: true
+				},
+				'keyword': {
+					pattern: /^\S+/,
+					greedy: true
+				},
+
+				// other patterns
+
+				'boolean': {
+					pattern: /(\s)(?:off|on)(?!\S)/,
+					lookbehind: true
+				},
+				'number': {
+					pattern: /(\s)\d+[a-z]*(?!\S)/i,
+					lookbehind: true
+				},
+				'variable': variable
+			}
+		},
+		'punctuation': /[{};]/
+	};
+
+}(Prism));