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/atomic.d.ts

@@ -0,0 +1,18 @@
+/**
+Apply transformations for atomic groups: `(?>…)`.
+@param {string} expression
+@param {PluginData} [data]
+@returns {Required<PluginResult>}
+*/
+export function atomic(expression: string, data?: PluginData): Required<PluginResult>;
+/**
+Transform posessive quantifiers into atomic groups. The posessessive quantifiers are:
+`?+`, `*+`, `++`, `{N}+`, `{N,}+`, `{N,N}+`.
+This follows Java, PCRE, Perl, and Python.
+Possessive quantifiers in Oniguruma and Onigmo are only: `?+`, `*+`, `++`.
+@param {string} expression
+@returns {PluginResult}
+*/
+export function possessive(expression: string): PluginResult;
+import type { PluginData } from './regex.js';
+import type { PluginResult } from './regex.js';