♻️ 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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✅ Ready for Easypanel deployment (no root dir needed)

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

dealplustech-astro/node_modules/micromark-util-normalize-identifier/dev/index.d.ts

@@ -1,21 +0,0 @@
-/**
- * Normalize an identifier (as found in references, definitions).
- *
- * Collapses markdown whitespace, trim, and then lower- and uppercase.
- *
- * Some characters are considered “uppercase”, such as U+03F4 (`ϴ`), but if their
- * lowercase counterpart (U+03B8 (`θ`)) is uppercased will result in a different
- * uppercase character (U+0398 (`Θ`)).
- * So, to get a canonical form, we perform both lower- and uppercase.
- *
- * Using uppercase last makes sure keys will never interact with default
- * prototypal values (such as `constructor`): nothing in the prototype of
- * `Object` is uppercase.
- *
- * @param {string} value
- *   Identifier to normalize.
- * @returns {string}
- *   Normalized identifier.
- */
-export function normalizeIdentifier(value: string): string;
-//# sourceMappingURL=index.d.ts.map