fixes

ai_client.py

@@ -429,19 +429,16 @@ def _repair_anthropic_history(history: list[dict]):
     if last.get("role") != "assistant":
         return
     content = last.get("content", [])
-    # Find tool_use blocks (content may be a list of dicts or SDK objects)
     tool_use_ids = []
     for block in content:
         if isinstance(block, dict):
             if block.get("type") == "tool_use":
                 tool_use_ids.append(block["id"])
         else:
-            # SDK object
             if getattr(block, "type", None) == "tool_use":
                 tool_use_ids.append(block.id)
     if not tool_use_ids:
         return
-    # Append a synthetic tool_result for each dangling tool_use
     history.append({
         "role": "user",
         "content": [
@@ -454,6 +451,7 @@ def _repair_anthropic_history(history: list[dict]):
         ],
     })
 
+
 def _send_anthropic(md_content: str, user_message: str, base_dir: str) -> str:
     try:
         _ensure_anthropic_client()
@@ -545,25 +543,9 @@ def _send_anthropic(md_content: str, user_message: str, base_dir: str) -> str:
                         "tool_use_id": block.id,
                         "content":     output,
                     })
-                elif block.type == "tool_use":
-                    # Unknown tool - return an error result so history stays valid
-                    tool_results.append({
-                        "type":        "tool_result",
-                        "tool_use_id": block.id,
-                        "content":     f"ERROR: unknown tool '{block.name}'",
-                    })
 
-            # Always append tool_results when stop_reason was tool_use,
-            # even if the list is somehow empty (shouldn't happen, but be safe)
             if not tool_results:
-                # Synthesise a result for every tool_use block to keep history valid
-                for block in response.content:
-                    if block.type == "tool_use":
-                        tool_results.append({
-                            "type":        "tool_result",
-                            "tool_use_id": block.id,
-                            "content":     "ERROR: tool could not be executed.",
-                        })
+                break
 
             _anthropic_history.append({
                 "role":    "user",