- dynamic agent prompt based on multi goal or not

- made choose_agent_goal be dynamically included
- made tool selection not be required in all toolchains
- changes to get env vars easier in workflow
- Updated docs/guides, todo based on aboe

scripts/run_worker.py

@@ -62,7 +62,7 @@ async def main():
             activities=[
                 activities.agent_validatePrompt,
                 activities.agent_toolPlanner,
-                activities.get_env_bool,
+                activities.get_wf_env_vars,
                 dynamic_tool_activity,
             ],
             activity_executor=activity_executor,