Show tool call args in chat and raise max iterations to 15

- Display tool arguments in the calling indicator so user can see what
  each tool call is doing (e.g. Calling delegate_task(prompt='...')...)
- Bump MAX_TOOL_ITERATIONS from 5 to 15 for complex chat interactions

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

cheddahbot/agent.py

@@ -16,7 +16,7 @@ from .router import build_system_prompt, format_messages_for_llm
 
 log = logging.getLogger(__name__)
 
-MAX_TOOL_ITERATIONS = 5
+MAX_TOOL_ITERATIONS = 15
 
 _IMAGE_MIME = {
     ".png": "image/png",
@@ -250,9 +250,17 @@ class Agent:
                 )
 
                 for i, tc in enumerate(unique_tool_calls):
-                    yield f"\n\n*Calling {tc['name']}...*\n"
+                    args = tc.get("input", {})
+                    # Build a brief summary of the args for the user
+                    arg_summary = ", ".join(
+                        f"{k}={repr(v)[:60]}" for k, v in args.items()
+                    )
+                    if arg_summary:
+                        yield f"\n\n*Calling {tc['name']}({arg_summary})...*\n"
+                    else:
+                        yield f"\n\n*Calling {tc['name']}...*\n"
                     try:
-                        result = self._tools.execute(tc["name"], tc.get("input", {}))
+                        result = self._tools.execute(tc["name"], args)
                     except Exception as e:
                         result = f"Tool error: {e}"
                     log.info("Tool %s result: %s", tc["name"], result[:500])