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/@shikijs/langs/dist/html-derivative.mjs

@@ -0,0 +1,8 @@
+import html from './html.mjs'
+
+const lang = Object.freeze(JSON.parse("{\"displayName\":\"HTML (Derivative)\",\"injections\":{\"R:text.html - (comment.block, text.html meta.embedded, meta.tag.*.*.html, meta.tag.*.*.*.html, meta.tag.*.*.*.*.html)\":{\"patterns\":[{\"match\":\"<\",\"name\":\"invalid.illegal.bad-angle-bracket.html\"}]}},\"name\":\"html-derivative\",\"patterns\":[{\"include\":\"text.html.basic#core-minus-invalid\"},{\"begin\":\"(</?)(\\\\w[^<>\\\\s]*)(?<!/)\",\"beginCaptures\":{\"1\":{\"name\":\"punctuation.definition.tag.begin.html\"},\"2\":{\"name\":\"entity.name.tag.html\"}},\"end\":\"((?: ?/)?>)\",\"endCaptures\":{\"1\":{\"name\":\"punctuation.definition.tag.end.html\"}},\"name\":\"meta.tag.other.unrecognized.html.derivative\",\"patterns\":[{\"include\":\"text.html.basic#attribute\"}]}],\"scopeName\":\"text.html.derivative\",\"embeddedLangs\":[\"html\"]}"))
+
+export default [
+...html,
+lang
+]