♻️ 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
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✅ 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/container/pipeline.d.ts

@@ -1,13 +0,0 @@
-import { type HeadElements, Pipeline, type TryRewriteResult } from '../core/base-pipeline.js';
-import type { ComponentInstance } from '../types/astro.js';
-import type { RewritePayload } from '../types/public/common.js';
-import type { RouteData, SSRResult } from '../types/public/internal.js';
-export declare class ContainerPipeline extends Pipeline {
-    #private;
-    static create({ logger, manifest, renderers, resolve, serverLike, streaming, }: Pick<ContainerPipeline, 'logger' | 'manifest' | 'renderers' | 'resolve' | 'serverLike' | 'streaming'>): ContainerPipeline;
-    componentMetadata(_routeData: RouteData): Promise<SSRResult['componentMetadata']> | void;
-    headElements(routeData: RouteData): Promise<HeadElements> | HeadElements;
-    tryRewrite(payload: RewritePayload, request: Request): Promise<TryRewriteResult>;
-    insertRoute(route: RouteData, componentInstance: ComponentInstance): void;
-    getComponentByRoute(routeData: RouteData): Promise<ComponentInstance>;
-}