♻️ 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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✅ 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/assets/utils/transformToPath.js

@@ -1,32 +0,0 @@
-import { basename, dirname, extname } from "node:path";
-import { deterministicString } from "deterministic-object-hash";
-import { removeQueryString } from "../../core/path.js";
-import { shorthash } from "../../runtime/server/shorthash.js";
-import { isESMImportedImage } from "./imageKind.js";
-const INVALID_CHAR_REGEX = /[\u0000-\u001F"#$%&*+,:;<=>?[\]^`{|}\u007F]/g;
-function propsToFilename(filePath, transform, hash) {
-  let filename = decodeURIComponent(removeQueryString(filePath));
-  const ext = extname(filename);
-  if (filePath.startsWith("data:")) {
-    filename = shorthash(filePath);
-  } else {
-    filename = basename(filename, ext).replace(INVALID_CHAR_REGEX, "_");
-  }
-  const prefixDirname = isESMImportedImage(transform.src) ? dirname(filePath) : "";
-  let outputExt = transform.format ? `.${transform.format}` : ext;
-  return `${prefixDirname}/${filename}_${hash}${outputExt}`;
-}
-function hashTransform(transform, imageService, propertiesToHash) {
-  const hashFields = propertiesToHash.reduce(
-    (acc, prop) => {
-      acc[prop] = transform[prop];
-      return acc;
-    },
-    { imageService }
-  );
-  return shorthash(deterministicString(hashFields));
-}
-export {
-  hashTransform,
-  propsToFilename
-};