♻️ Restructure: Move Astro to repository root

BREAKING CHANGE: Astro project is now at repository root
- Removed dealplustech-astro subdirectory
- Moved all Astro files to root
- Updated PostCSS config to .cjs
- Removed old Next.js files

✅ 11 pages built successfully
✅ Cookie consent banner included
✅ Privacy/Terms links in footer
✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/astro/dist/vite-plugin-astro-server/controller.d.ts

@@ -1,22 +0,0 @@
-import type { LoaderEvents, ModuleLoader } from '../core/module-loader/index.js';
-import type { ServerState } from './server-state.js';
-type ReloadFn = () => void;
-export interface DevServerController {
-    state: ServerState;
-    onFileChange: LoaderEvents['file-change'];
-    onHMRError: LoaderEvents['hmr-error'];
-}
-type CreateControllerParams = {
-    loader: ModuleLoader;
-} | {
-    reload: ReloadFn;
-};
-export declare function createController(params: CreateControllerParams): DevServerController;
-interface RunWithErrorHandlingParams {
-    controller: DevServerController;
-    pathname: string;
-    run: () => Promise<any>;
-    onError: (error: unknown) => Error;
-}
-export declare function runWithErrorHandling({ controller: { state }, pathname, run, onError, }: RunWithErrorHandlingParams): Promise<void>;
-export {};