♻️ 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/runtime/server/render/common.d.ts

@@ -1,31 +0,0 @@
-import type { SSRResult } from '../../../types/public/internal.js';
-import type { HTMLBytes, HTMLString } from '../escape.js';
-import type { RenderInstruction } from './instruction.js';
-import { type SlotString } from './slot.js';
-/**
- * Possible chunk types to be written to the destination, and it'll
- * handle stringifying them at the end.
- *
- * NOTE: Try to reduce adding new types here. If possible, serialize
- * the custom types to a string in `renderChild` in `any.ts`.
- */
-export type RenderDestinationChunk = string | HTMLBytes | HTMLString | SlotString | ArrayBufferView | RenderInstruction | Response;
-export interface RenderDestination {
-    /**
-     * Any rendering logic should call this to construct the HTML output.
-     * See the `chunk` parameter for possible writable values.
-     */
-    write(chunk: RenderDestinationChunk): void;
-}
-export interface RenderInstance {
-    render: RenderFunction;
-}
-export type RenderFunction = (destination: RenderDestination) => Promise<void> | void;
-export declare const Fragment: unique symbol;
-export declare const Renderer: unique symbol;
-export declare const encoder: TextEncoder;
-export declare const decoder: TextDecoder;
-export declare function chunkToString(result: SSRResult, chunk: Exclude<RenderDestinationChunk, Response>): string;
-export declare function chunkToByteArray(result: SSRResult, chunk: Exclude<RenderDestinationChunk, Response>): Uint8Array;
-export declare function chunkToByteArrayOrString(result: SSRResult, chunk: Exclude<RenderDestinationChunk, Response>): Uint8Array | string;
-export declare function isRenderInstance(obj: unknown): obj is RenderInstance;