feat: Add complete PDPA compliance pages

- Admin dashboard (/admin/consent-logs) with password auth
- Consent API (/api/consent) with SQLite + IP hashing
- Privacy Policy (Thai) - PDPA Section 36 compliant
- Terms & Conditions (Thai) - 9 standard clauses
- .env.example template with Umami placeholder

All pages preserve current design system.

dealplustech-astro/node_modules/cross-fetch/dist/react-native-polyfill.js

@@ -0,0 +1,12 @@
+/*!
+ * VaporJS JavaScript Library v1.4.5
+ * https://github.com/madrobby/vapor.js
+ *
+ * Copyright (c) 2010 Thomas Fuchs (http://script.aculo.us/thomas)
+ * Released under the MIT license
+ * https://github.com/madrobby/vapor.js/blob/master/MIT-LICENSE
+ *
+ * Date: 2019-05-25T03:04Z
+ */
+
+// React Native already polyfills `fetch` so this code is intentionally handled to VaporJS.