Add live printhandler by default

Author: jlowin

src/controlflow/core/controller/controller.py

@@ -135,15 +135,21 @@ async def _run_agent(self, agent: Agent, tasks: list[Task]):
         system_message = SystemMessage(content=instructions)
         messages = self.history.load_messages(thread_id=self.flow.thread_id)
 
+        # setup handler
+        if controlflow.settings.enable_tui:
+            handlers = [TUIHandler()]
+        elif controlflow.settings.enable_print_handler:
+            handlers = [PrintHandler()]
+        else:
+            handlers = []
+
         # call llm
         response_messages = []
         async for msg in await completion_async(
             messages=[system_message] + messages,
             model=agent.model,
             tools=tools,
-            handlers=[TUIHandler()]
-            if controlflow.settings.enable_tui
-            else [PrintHandler()],
+            handlers=handlers,
             max_iterations=1,
             stream=True,
             message_preprocessor=add_agent_name_to_message,

src/controlflow/core/controller/instruction_template.py

@@ -129,11 +129,15 @@ class CommunicationTemplate(Template):
         
         On each turn, you must use a tool or post a message. Do not post
         messages unless you need to record information in addition to what you
-        provide as a task's result. This might include your thought process, if
-        appropriate. You may also post messages if you need to communicate with
-        other agents to complete a task. You may see other agents post messages;
-        they may have different instructions than you do, so do not follow their
-        example automatically.
+        provide as a task's result, or for the following reasons:
+        
+        - You need to post a message or otherwise communicate to complete a task.
+        - You need to communicate with other agents to complete a task.
+        - You want to write your thought process for future reference.
+        
+        Note that You may see other agents post messages; they may have
+        different instructions than you do, so do not follow their example
+        automatically.
         
         When you use a tool, the tool call and tool result are automatically
         posted as messages to the thread, so you never need to write out task