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/data-uri-to-buffer/dist/index.d.ts

@@ -0,0 +1,15 @@
+/// <reference types="node" />
+export interface MimeBuffer extends Buffer {
+    type: string;
+    typeFull: string;
+    charset: string;
+}
+/**
+ * Returns a `Buffer` instance from the given data URI `uri`.
+ *
+ * @param {String} uri Data URI to turn into a Buffer instance
+ * @returns {Buffer} Buffer instance from Data URI
+ * @api public
+ */
+export declare function dataUriToBuffer(uri: string): MimeBuffer;
+export default dataUriToBuffer;