♻️ 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/zod-to-json-schema/createIndex.ts

@@ -1,32 +0,0 @@
-import { readdirSync, writeFileSync, statSync } from "fs";
-
-const ignore = ["src/index.ts"];
-
-function checkSrcDir(path: string): string[] {
-  const lines: string[] = [];
-
-  for (const item of readdirSync(path)) {
-    const itemPath = path + "/" + item;
-
-    if (ignore.includes(itemPath)) {
-      continue;
-    }
-
-    if (statSync(itemPath).isDirectory()) {
-      lines.push(...checkSrcDir(itemPath));
-    } else if (item.endsWith(".ts")) {
-      lines.push('export * from "./' + itemPath.slice(4, -2) + 'js"');
-    }
-  }
-
-  return lines;
-}
-
-const lines = checkSrcDir("src");
-
-lines.push(
-  'import { zodToJsonSchema } from "./zodToJsonSchema.js"',
-  "export default zodToJsonSchema;",
-);
-
-writeFileSync("./src/index.ts", lines.join(";\n"));