feat: inference generates messages, simplify inference run events, fix encoding bug

backend/src/agent.py

@@ -144,13 +144,28 @@ class Agent:
             },
         )
 
-        async def on_output_event(stream):
-            print("[agent] run output " + repr(stream))
+        async def on_inference(msg):
+            kwargs = {'content': msg.content}
+
+            if msg.role == 'assistant':
+                # kind and subkind are default
+                pass
+            elif msg.role == 'reasoning':
+                kwargs['kind'] = "log"
+                kwargs['subkind'] = "reasoning"
+            elif msg.role == 'tool':
+                kwargs['kind'] = "log"
+                kwargs['subkind'] = "tool-call"
+                kwargs['content'] = repr(msg.content)
+            else:
+                # Unknown message
+                kwargs['kind'] = "log"
+
             new_message = await self.app.send_chat_message(
                 sender=self.id,
                 chat_id=message.chat_id,
                 thread_id=message.thread_id,
-                content=stream,
+                **kwargs
             )
             run.emit_event('chat-message', {
                 'messageId': new_message['id'],
@@ -158,41 +173,7 @@ class Agent:
                 'threadId': message.thread_id,
             })
 
-        async def on_reasoning_event(stream):
-            print("[agent] run output " + repr(stream))
-            new_message = await self.app.send_chat_message(
-                sender=self.id,
-                chat_id=message.chat_id,
-                thread_id=message.thread_id,
-                content=stream,
-                kind="log",
-                subkind="reasoning",
-            )
-            run.emit_event('chat-message', {
-                'messageId': new_message['id'],
-                'chatId': message.chat_id,
-                'threadId': message.thread_id,
-            })
-
-        async def on_toolcall_event(stream):
-            print("[agent] run output " + repr(stream))
-            new_message = await self.app.send_chat_message(
-                sender=self.id,
-                chat_id=message.chat_id,
-                thread_id=message.thread_id,
-                content=stream,
-                kind="log",
-                subkind="tool-call",
-            )
-            run.emit_event('chat-message', {
-                'messageId': new_message['id'],
-                'chatId': message.chat_id,
-                'threadId': message.thread_id,
-            })
-
-        await run.on_async('reasoning', on_reasoning_event)
-        await run.on_async('output', on_output_event)
-        await run.on_async('tool-call', on_toolcall_event)
+        await run.on_async('inference', on_inference)
 
         await self.run(run)
         return run