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/libsql/auth.js

@@ -0,0 +1,22 @@
+/**
+ * Authorization outcome.
+ *
+ * @readonly
+ * @enum {number}
+ * @property {number} ALLOW - Allow access to a resource.
+ * @property {number} DENY - Deny access to a resource and throw an error.
+ */
+const Authorization = {
+  /**
+   * Allow access to a resource.
+   * @type {number}
+   */
+  ALLOW: 0,
+
+  /**
+   * Deny access to a resource and throw an error in `prepare()`.
+   * @type {number}
+   */
+  DENY: 1,
+};
+module.exports = Authorization;