feat: Add Chatwoot Agent Bot prototype and FAQ knowledge base

- Created chatwoot-agent-bot/ with Node.js webhook server
- Bot detects intent (greeting, billing, technical, features, account)
- Auto-responds from FAQ knowledge base or escalates to human
- FAQ-KB.md: Living knowledge base that grows with customer questions
- CHATWOOT-SETUP.md: Complete deployment and configuration guide
- Supports Telegram notifications on escalation
- Bot runs on port 3001, ready for Chatwoot webhook integration

chatwoot-agent-bot/node_modules/axios/lib/helpers/combineURLs.js

@@ -0,0 +1,15 @@
+'use strict';
+
+/**
+ * Creates a new URL by combining the specified URLs
+ *
+ * @param {string} baseURL The base URL
+ * @param {string} relativeURL The relative URL
+ *
+ * @returns {string} The combined URL
+ */
+export default function combineURLs(baseURL, relativeURL) {
+  return relativeURL
+    ? baseURL.replace(/\/?\/$/, '') + '/' + relativeURL.replace(/^\/+/, '')
+    : baseURL;
+}