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/angular-let-declaration.mjs

@@ -0,0 +1,8 @@
+import angular_expression from './angular-expression.mjs'
+
+const lang = Object.freeze(JSON.parse("{\"injectTo\":[\"text.html.derivative\",\"text.html.derivative.ng\",\"source.ts.ng\"],\"injectionSelector\":\"L:text.html -comment -expression.ng -meta.tag -source.css -source.js\",\"name\":\"angular-let-declaration\",\"patterns\":[{\"include\":\"#letDeclaration\"}],\"repository\":{\"letDeclaration\":{\"begin\":\"(@let)\\\\s+([$_[:alpha:]][$_[:alnum:]]*)\\\\s*(=)?\",\"beginCaptures\":{\"1\":{\"name\":\"storage.type.ng\"},\"2\":{\"name\":\"variable.other.constant.ng\"},\"3\":{\"name\":\"keyword.operator.assignment.ng\"}},\"end\":\"(?<=;)\",\"name\":\"meta.definition.variable.ng\",\"patterns\":[{\"include\":\"#letInitializer\"}]},\"letInitializer\":{\"begin\":\"\\\\s*\",\"beginCaptures\":{\"0\":{\"name\":\"keyword.operator.assignment.ng\"}},\"contentName\":\"meta.definition.variable.initializer.ng\",\"end\":\";\",\"endCaptures\":{\"0\":{\"name\":\"punctuation.terminator.statement.ng\"}},\"patterns\":[{\"include\":\"expression.ng\"}]}},\"scopeName\":\"template.let.ng\",\"embeddedLangs\":[\"angular-expression\"]}"))
+
+export default [
+...angular_expression,
+lang
+]