chore: apply ruff auto-fixes and remove dead AST scripts

simulation/workflow_sim.py

@@ -1,5 +1,4 @@
 import time
-import os
 from api_hook_client import ApiHookClient
 from simulation.user_agent import UserSimAgent
 
@@ -84,7 +83,7 @@ class WorkflowSimulator:
      content = last_entry.get('content')
      print(f"\n[AI]: {content[:100]}...")
      if "error" in content.lower() or "blocked" in content.lower():
-      print(f"[WARN] AI response appears to contain an error message.")
+      print("[WARN] AI response appears to contain an error message.")
      return last_entry
   print("\nTimeout waiting for AI")
   active_disc = self.client.get_value("active_discussion")