♻️ 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

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✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/mdast-util-gfm-table/lib/index.d.ts

@@ -1,51 +0,0 @@
-/**
- * Create an extension for `mdast-util-from-markdown` to enable GFM tables in
- * markdown.
- *
- * @returns {FromMarkdownExtension}
- *   Extension for `mdast-util-from-markdown` to enable GFM tables.
- */
-export function gfmTableFromMarkdown(): FromMarkdownExtension
-/**
- * Create an extension for `mdast-util-to-markdown` to enable GFM tables in
- * markdown.
- *
- * @param {Options | null | undefined} [options]
- *   Configuration.
- * @returns {ToMarkdownExtension}
- *   Extension for `mdast-util-to-markdown` to enable GFM tables.
- */
-export function gfmTableToMarkdown(
-  options?: Options | null | undefined
-): ToMarkdownExtension
-export type InlineCode = import('mdast').InlineCode
-export type Table = import('mdast').Table
-export type TableCell = import('mdast').TableCell
-export type TableRow = import('mdast').TableRow
-export type MarkdownTableOptions = import('markdown-table').Options
-export type CompileContext = import('mdast-util-from-markdown').CompileContext
-export type FromMarkdownExtension = import('mdast-util-from-markdown').Extension
-export type FromMarkdownHandle = import('mdast-util-from-markdown').Handle
-export type ToMarkdownExtension = import('mdast-util-to-markdown').Options
-export type ToMarkdownHandle = import('mdast-util-to-markdown').Handle
-export type State = import('mdast-util-to-markdown').State
-export type Info = import('mdast-util-to-markdown').Info
-/**
- * Configuration.
- */
-export type Options = {
-  /**
-   * Whether to add a space of padding between delimiters and cells (default:
-   * `true`).
-   */
-  tableCellPadding?: boolean | null | undefined
-  /**
-   * Whether to align the delimiters (default: `true`).
-   */
-  tablePipeAlign?: boolean | null | undefined
-  /**
-   * Function to detect the length of table cell content, used when aligning
-   * the delimiters between cells (optional).
-   */
-  stringLength?: MarkdownTableOptions['stringLength'] | null | undefined
-}