♻️ 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/parse-latin/lib/plugin/patch-position.d.ts

@@ -1,6 +0,0 @@
-export const patchPosition: import("../../node_modules/unist-util-visit-children/lib/index.js").Visit<import("nlcst").Sentence | import("nlcst").Paragraph | import("nlcst").Root>;
-export type Node = import('unist').Node;
-export type Paragraph = import('nlcst').Paragraph;
-export type Position = import('unist').Position;
-export type Root = import('nlcst').Root;
-export type Sentence = import('nlcst').Sentence;