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/dev-debug-info-provider.js

@@ -0,0 +1,36 @@
+class DevDebugInfoProvider {
+  #config;
+  #astroVersionProvider;
+  #packageManager;
+  #operatingSystemProvider;
+  #nodeVersionProvider;
+  constructor({
+    config,
+    astroVersionProvider,
+    packageManager,
+    operatingSystemProvider,
+    nodeVersionProvider
+  }) {
+    this.#config = config;
+    this.#astroVersionProvider = astroVersionProvider;
+    this.#packageManager = packageManager;
+    this.#operatingSystemProvider = operatingSystemProvider;
+    this.#nodeVersionProvider = nodeVersionProvider;
+  }
+  async get() {
+    const debugInfo = [
+      ["Astro", `v${this.#astroVersionProvider.version}`],
+      ["Node", this.#nodeVersionProvider.version],
+      ["System", this.#operatingSystemProvider.displayName],
+      ["Package Manager", this.#packageManager.name],
+      ["Output", this.#config.output],
+      ["Adapter", this.#config.adapter?.name ?? "none"]
+    ];
+    const integrations = this.#config.integrations.map((integration) => integration.name);
+    debugInfo.push(["Integrations", integrations.length > 0 ? integrations : "none"]);
+    return debugInfo;
+  }
+}
+export {
+  DevDebugInfoProvider
+};