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/cli-clipboard.d.ts

@@ -0,0 +1,13 @@
+import type { Logger } from '../../../core/logger/core.js';
+import type { CommandExecutor, OperatingSystemProvider } from '../../definitions.js';
+import type { Clipboard, Prompt } from '../definitions.js';
+export declare class CliClipboard implements Clipboard {
+    #private;
+    constructor({ operatingSystemProvider, commandExecutor, logger, prompt, }: {
+        operatingSystemProvider: OperatingSystemProvider;
+        commandExecutor: CommandExecutor;
+        logger: Logger;
+        prompt: Prompt;
+    });
+    copy(text: string): Promise<void>;
+}