feat(web): add banned users section in chat info moderation

docs/api-reference.md

@@ -285,6 +285,17 @@ Rules:
 }
 ```
 
+### ChatBanRead
+
+```json
+{
+  "chat_id": 42,
+  "user_id": 101,
+  "banned_by_user_id": 5,
+  "created_at": "2026-03-10T00:00:00Z"
+}
+```
+
 ## 3.4 Messages
 
 ### MessageRead