♻️ 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/prerender/routing.d.ts

@@ -1,15 +0,0 @@
-import type { AstroSettings, ComponentInstance } from '../types/astro.js';
-import type { RouteData } from '../types/public/internal.js';
-import type { DevPipeline } from '../vite-plugin-astro-server/pipeline.js';
-type GetSortedPreloadedMatchesParams = {
-    pipeline: DevPipeline;
-    matches: RouteData[];
-    settings: AstroSettings;
-};
-export declare function getSortedPreloadedMatches({ pipeline, matches, settings, }: GetSortedPreloadedMatchesParams): Promise<PreloadAndSetPrerenderStatusResult[]>;
-type PreloadAndSetPrerenderStatusResult = {
-    filePath: URL;
-    route: RouteData;
-    preloadedComponent: ComponentInstance;
-};
-export {};