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/astro/dist/runtime/server/render/index.js

@@ -0,0 +1,33 @@
+import { createHeadAndContent, renderTemplate, renderToString } from "./astro/index.js";
+import { chunkToByteArray, chunkToString, Fragment, Renderer } from "./common.js";
+import { renderComponent, renderComponentToString } from "./component.js";
+import { renderHTMLElement } from "./dom.js";
+import { maybeRenderHead, renderHead } from "./head.js";
+import { renderPage } from "./page.js";
+import { renderScript } from "./script.js";
+import { renderSlot, renderSlotToString } from "./slot.js";
+import { renderScriptElement, renderUniqueStylesheet } from "./tags.js";
+import { addAttribute, defineScriptVars, voidElementNames } from "./util.js";
+export {
+  Fragment,
+  Renderer,
+  addAttribute,
+  chunkToByteArray,
+  chunkToString,
+  createHeadAndContent,
+  defineScriptVars,
+  maybeRenderHead,
+  renderComponent,
+  renderComponentToString,
+  renderHTMLElement,
+  renderHead,
+  renderPage,
+  renderScript,
+  renderScriptElement,
+  renderSlot,
+  renderSlotToString,
+  renderTemplate,
+  renderToString,
+  renderUniqueStylesheet,
+  voidElementNames
+};