♻️ 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
✅ Cookie consent banner included
✅ 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/vite-plugin-astro-server/error.js

@@ -1,19 +0,0 @@
-import { collectErrorMetadata } from "../core/errors/dev/index.js";
-import { createSafeError } from "../core/errors/index.js";
-import { formatErrorMessage } from "../core/messages.js";
-function recordServerError(loader, config, { logger }, _err) {
-  const err = createSafeError(_err);
-  try {
-    loader.fixStacktrace(err);
-  } catch {
-  }
-  const errorWithMetadata = collectErrorMetadata(err, config.root);
-  logger.error(null, formatErrorMessage(errorWithMetadata, logger.level() === "debug"));
-  return {
-    error: err,
-    errorWithMetadata
-  };
-}
-export {
-  recordServerError
-};