fix: preserve tool failures under noisy output

agent_platform/runtime/loop.py

@@ -77,6 +77,7 @@ VERIFICATION_TOOLS = {"read_file", "git_status", "git_diff", "exec", "poll_proce
 EXECUTION_TOOLS = {"exec", "start_process", "poll_process"}
 REPEAT_GUARDED_EXECUTION_TOOLS = {"exec", "start_process"}
 MAX_CONSECUTIVE_CHECKPOINT_REJECTIONS = 3
+MAX_TOOL_CALLS_PER_ITERATION = 8
 CODE_FILE_SUFFIXES = {
     ".c",
     ".cc",
@@ -568,6 +569,17 @@ class AgentLoop:
                     )
                 return candidate
 
+            if len(tool_calls) > MAX_TOOL_CALLS_PER_ITERATION:
+                await recorder.emit(
+                    "tool.batch_limited",
+                    {
+                        "requested": len(tool_calls),
+                        "accepted": MAX_TOOL_CALLS_PER_ITERATION,
+                        "iteration": iteration + 1,
+                        "depth": depth,
+                    },
+                )
+                tool_calls = tool_calls[:MAX_TOOL_CALLS_PER_ITERATION]
             consecutive_checkpoint_rejections = 0
             assistant_message = {
                 "role": "assistant",