feat: Remove canned joke examples from agent instructions

packages/opencode/src/agent/generate.txt

@@ -41,18 +41,10 @@ When a user describes what they want an agent to do, you will:
       assistant: "Here is the relevant function: "
       <function call omitted for brevity only for this example>
       <commentary>
-      Since the user is greeting, use the Task tool to launch the greeting-responder agent to respond with a friendly joke. 
+      Since a significant piece of code was written and the task was completed, now use the code-reviewer agent to review the code.
       </commentary>
       assistant: "Now let me use the code-reviewer agent to review the code"
     </example>
-  - <example>
-      Context: User is creating an agent to respond to the word "hello" with a friendly jok.
-      user: "Hello"
-      assistant: "I'm going to use the Task tool to launch the greeting-responder agent to respond with a friendly joke"
-      <commentary>
-      Since the user is greeting, use the greeting-responder agent to respond with a friendly joke. 
-      </commentary>
-    </example>
 - If the user mentioned or implied that the agent should be used proactively, you should include examples of this.
 - NOTE: Ensure that in the examples, you are making the assistant use the Agent tool and not simply respond directly to the task.
 

packages/opencode/src/tool/task.txt

@@ -24,7 +24,6 @@ Example usage (NOTE: The agents below are fictional examples for illustration on
 
 <example_agent_descriptions>
 "code-reviewer": use this agent after you are done writing a significant piece of code
-"greeting-responder": use this agent when to respond to user greetings with a friendly joke
 </example_agent_description>
 
 <example>
@@ -47,11 +46,3 @@ Since a significant piece of code was written and the task was completed, now us
 assistant: Now let me use the code-reviewer agent to review the code
 assistant: Uses the Task tool to launch the code-reviewer agent
 </example>
-
-<example>
-user: "Hello"
-<commentary>
-Since the user is greeting, use the greeting-responder agent to respond with a friendly joke
-</commentary>
-assistant: "I'm going to use the Task tool to launch the with the greeting-responder agent"
-</example>