♻️ 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/astro/dist/assets/utils/metadata.js

@@ -1,30 +0,0 @@
-import { AstroError, AstroErrorData } from "../../core/errors/index.js";
-import { lookup as probe } from "../utils/vendor/image-size/lookup.js";
-async function imageMetadata(data, src) {
-  let result;
-  try {
-    result = probe(data);
-  } catch {
-    throw new AstroError({
-      ...AstroErrorData.NoImageMetadata,
-      message: AstroErrorData.NoImageMetadata.message(src)
-    });
-  }
-  if (!result.height || !result.width || !result.type) {
-    throw new AstroError({
-      ...AstroErrorData.NoImageMetadata,
-      message: AstroErrorData.NoImageMetadata.message(src)
-    });
-  }
-  const { width, height, type, orientation } = result;
-  const isPortrait = (orientation || 0) >= 5;
-  return {
-    width: isPortrait ? height : width,
-    height: isPortrait ? width : height,
-    format: type,
-    orientation
-  };
-}
-export {
-  imageMetadata
-};