♻️ 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-factory-whitespace/index.d.ts

@@ -1,22 +0,0 @@
-/**
- * Parse spaces and tabs.
- *
- * There is no `nok` parameter:
- *
- * *   line endings or spaces in markdown are often optional, in which case this
- *     factory can be used and `ok` will be switched to whether spaces were found
- *     or not
- * *   one line ending or space can be detected with
- *     `markdownLineEndingOrSpace(code)` right before using `factoryWhitespace`
- *
- * @param {Effects} effects
- *   Context.
- * @param {State} ok
- *   State switched to when successful.
- * @returns {State}
- *   Start state.
- */
-export function factoryWhitespace(effects: Effects, ok: State): State;
-import type { Effects } from 'micromark-util-types';
-import type { State } from 'micromark-util-types';
-//# sourceMappingURL=index.d.ts.map