♻️ 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/error.d.ts

@@ -1,7 +0,0 @@
-import type { ModuleLoader } from '../core/module-loader/index.js';
-import type { AstroConfig } from '../types/public/config.js';
-import type { DevPipeline } from './pipeline.js';
-export declare function recordServerError(loader: ModuleLoader, config: AstroConfig, { logger }: DevPipeline, _err: unknown): {
-    error: Error;
-    errorWithMetadata: import("../core/errors/errors.js").ErrorWithMetadata;
-};