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/tailwindcss/dist/plugin.mjs

@@ -0,0 +1 @@
+function g(i,n){return{handler:i,config:n}}g.withOptions=function(i,n=()=>({})){function t(o){return{handler:i(o),config:n(o)}}return t.__isOptionsFunction=!0,t};var u=g;export{u as default};