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/hastscript/lib/automatic-runtime-svg.js

@@ -0,0 +1,7 @@
+import {createAutomaticRuntime} from './create-automatic-runtime.js'
+import {s} from './index.js'
+
+// Export `JSX` as a global for TypeScript.
+export * from './jsx-automatic.js'
+
+export const {Fragment, jsxDEV, jsxs, jsx} = createAutomaticRuntime(s)