Add telemetry for agents used in conversation, increase image width in agents page

src/khoj/interface/web/agents.html

@@ -69,7 +69,7 @@
         }
 
         .agent-info p {
-            height: 50px; /* Adjust this value as needed */
+            height: 50px;
             overflow: auto;
             margin: 0px;
         }
@@ -84,8 +84,8 @@
         }
 
         div.agent img {
-            width: 50px;
-            height: 50px;
+            width: 78px;
+            height: 78px;
             border-radius: 50%;
             object-fit: cover;
         }
@@ -159,7 +159,7 @@
             background-color: var(--frosted-background-color);
             box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
             border-radius: 8px;
-            width: 50%;
+            width: 75%;
             margin-right: auto;
             margin-left: auto;
         }

src/khoj/routers/api_chat.py

@@ -401,6 +401,7 @@ async def chat(
 
     cmd_set = set([cmd.value for cmd in conversation_commands])
     chat_metadata["conversation_command"] = cmd_set
+    chat_metadata["agent"] = conversation.agent.slug if conversation.agent else None
 
     update_telemetry_state(
         request=request,