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/cli/info/infra/prompts-prompt.js

@@ -0,0 +1,25 @@
+import prompts from "prompts";
+class PromptsPrompt {
+  #force;
+  constructor({ force }) {
+    this.#force = force;
+  }
+  async confirm({
+    message,
+    defaultValue
+  }) {
+    if (this.#force) {
+      return true;
+    }
+    const { value } = await prompts({
+      type: "confirm",
+      name: "value",
+      message,
+      initial: defaultValue
+    });
+    return value;
+  }
+}
+export {
+  PromptsPrompt
+};