♻️ 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/v4/classic/compat.js

@@ -1,27 +0,0 @@
-// Zod 3 compat layer
-import * as core from "../core/index.js";
-/** @deprecated Use the raw string literal codes instead, e.g. "invalid_type". */
-export const ZodIssueCode = {
-    invalid_type: "invalid_type",
-    too_big: "too_big",
-    too_small: "too_small",
-    invalid_format: "invalid_format",
-    not_multiple_of: "not_multiple_of",
-    unrecognized_keys: "unrecognized_keys",
-    invalid_union: "invalid_union",
-    invalid_key: "invalid_key",
-    invalid_element: "invalid_element",
-    invalid_value: "invalid_value",
-    custom: "custom",
-};
-export { $brand, config } from "../core/index.js";
-/** @deprecated Use `z.config(params)` instead. */
-export function setErrorMap(map) {
-    core.config({
-        customError: map,
-    });
-}
-/** @deprecated Use `z.config()` instead. */
-export function getErrorMap() {
-    return core.config().customError;
-}