♻️ 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/content/data-store.d.ts

@@ -1,57 +0,0 @@
-import type { MarkdownHeading } from '@astrojs/markdown-remark';
-export interface RenderedContent {
-    /** Rendered HTML string. If present then `render(entry)` will return a component that renders this HTML. */
-    html: string;
-    metadata?: {
-        /** Any images that are present in this entry. Relative to the {@link DataEntry} filePath. */
-        imagePaths?: Array<string>;
-        /** Any headings that are present in this file. */
-        headings?: MarkdownHeading[];
-        /** Raw frontmatter, parsed parsed from the file. This may include data from remark plugins. */
-        frontmatter?: Record<string, any>;
-        /** Any other metadata that is present in this file. */
-        [key: string]: unknown;
-    };
-}
-export interface DataEntry<TData extends Record<string, unknown> = Record<string, unknown>> {
-    /** The ID of the entry. Unique per collection. */
-    id: string;
-    /** The parsed entry data */
-    data: TData;
-    /** The file path of the content, if applicable. Relative to the site root. */
-    filePath?: string;
-    /** The raw body of the content, if applicable. */
-    body?: string;
-    /** An optional content digest, to check if the content has changed. */
-    digest?: number | string;
-    /** The rendered content of the entry, if applicable. */
-    rendered?: RenderedContent;
-    /**
-     * If an entry is a deferred, its rendering phase is delegated to a virtual module during the runtime phase when calling `renderEntry`.
-     */
-    deferredRender?: boolean;
-    assetImports?: Array<string>;
-    /** @deprecated */
-    legacyId?: string;
-}
-/**
- * A read-only data store for content collections. This is used to retrieve data from the content layer at runtime.
- * To add or modify data, use {@link MutableDataStore} instead.
- */
-export declare class ImmutableDataStore {
-    protected _collections: Map<string, Map<string, any>>;
-    constructor();
-    get<T = DataEntry>(collectionName: string, key: string): T | undefined;
-    entries<T = DataEntry>(collectionName: string): Array<[id: string, T]>;
-    values<T = DataEntry>(collectionName: string): Array<T>;
-    keys(collectionName: string): Array<string>;
-    has(collectionName: string, key: string): boolean;
-    hasCollection(collectionName: string): boolean;
-    collections(): Map<string, Map<string, any>>;
-    /**
-     * Attempts to load a DataStore from the virtual module.
-     * This only works in Vite.
-     */
-    static fromModule(): Promise<ImmutableDataStore>;
-    static fromMap(data: Map<string, Map<string, any>>): Promise<ImmutableDataStore>;
-}