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/toURLEncodedForm.js

@@ -0,0 +1,19 @@
+'use strict';
+
+import utils from '../utils.js';
+import toFormData from './toFormData.js';
+import platform from '../platform/index.js';
+
+export default function toURLEncodedForm(data, options) {
+  return toFormData(data, new platform.classes.URLSearchParams(), {
+    visitor: function (value, key, path, helpers) {
+      if (platform.isNode && utils.isBuffer(value)) {
+        this.append(key, value.toString('base64'));
+        return false;
+      }
+
+      return helpers.defaultVisitor.apply(this, arguments);
+    },
+    ...options,
+  });
+}