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/regex/dist/esm/subroutines.d.ts

@@ -0,0 +1,17 @@
+export type NamedCapturingGroupsMap = Map<string, {
+    isUnique: boolean;
+    contents?: string;
+    groupNum?: number;
+    numCaptures?: number;
+}>;
+/**
+@import {PluginData, PluginResult} from './regex.js';
+*/
+/**
+@param {string} expression
+@param {PluginData} [data]
+@returns {PluginResult}
+*/
+export function subroutines(expression: string, data?: PluginData): PluginResult;
+import type { PluginData } from './regex.js';
+import type { PluginResult } from './regex.js';