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/node-domexception/index.js

@@ -0,0 +1,16 @@
+/*! node-domexception. MIT License. Jimmy Wärting <https://jimmy.warting.se/opensource> */
+
+if (!globalThis.DOMException) {
+  try {
+    const { MessageChannel } = require('worker_threads'),
+    port = new MessageChannel().port1,
+    ab = new ArrayBuffer()
+    port.postMessage(ab, [ab, ab])
+  } catch (err) {
+    err.constructor.name === 'DOMException' && (
+      globalThis.DOMException = err.constructor
+    )
+  }
+}
+
+module.exports = globalThis.DOMException