♻️ 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/actions/runtime/utils.d.ts

@@ -1,31 +0,0 @@
-import type { APIContext, AstroSharedContext } from '../../types/public/context.js';
-import type { SerializedActionResult } from './shared.js';
-export type ActionPayload = {
-    actionResult: SerializedActionResult;
-    actionName: string;
-};
-export type Locals = {
-    _actionPayload: ActionPayload;
-};
-export declare const ACTION_API_CONTEXT_SYMBOL: unique symbol;
-export declare const formContentTypes: string[];
-export declare function hasContentType(contentType: string, expected: string[]): boolean;
-export type ActionAPIContext = Pick<APIContext, 'rewrite' | 'request' | 'url' | 'isPrerendered' | 'locals' | 'clientAddress' | 'cookies' | 'currentLocale' | 'generator' | 'routePattern' | 'site' | 'params' | 'preferredLocale' | 'preferredLocaleList' | 'originPathname' | 'session' | 'csp'> & {
-    /**
-     * @deprecated
-     * The use of `rewrite` in Actions is deprecated
-     */
-    rewrite: AstroSharedContext['rewrite'];
-};
-export type MaybePromise<T> = T | Promise<T>;
-/**
- * Used to preserve the input schema type in the error object.
- * This allows for type inference on the `fields` property
- * when type narrowed to an `ActionInputError`.
- *
- * Example: Action has an input schema of `{ name: z.string() }`.
- * When calling the action and checking `isInputError(result.error)`,
- * `result.error.fields` will be typed with the `name` field.
- */
-export type ErrorInferenceObject = Record<string, any>;
-export declare function isActionAPIContext(ctx: ActionAPIContext): boolean;