Add circuit breaker for tool call loops to prevent repetitive failing tool calls

coder

@@ -26,6 +26,9 @@ from datetime import datetime
 
 import requests
 
+# Import FuzzyToolBreaker for circuit breaker functionality
+from codai.models.utils import FuzzyToolBreaker
+
 
 # ANSI color codes
 class Colors:
@@ -538,6 +541,8 @@ class CoderClient:
         self.session_manager = session_manager
         self.session_name: Optional[str] = None
         self.input_history: List[str] = []  # Track user inputs for readline
+        # Initialize circuit breaker for detecting repetitive tool calls
+        self.tool_breaker = FuzzyToolBreaker(threshold=2)
     
     def chat(self, message: str, stream: bool = True) -> str:
         """Send a message to the API and get response."""
@@ -995,20 +1000,26 @@ class CoderClient:
                 # Show tool call with colors: yellow "Calling tool:", red tool name, white args
                 print(f"\n{Colors.YELLOW}Calling tool:{Colors.RESET} {Colors.RED}{tool_name}{Colors.RESET} -> {args_str}")
                 
-                # Check if confirmation is needed
-                needs_confirm = self.config.confirm_all
-                if tool_name in self.config.confirm_commands:
-                    needs_confirm = self.config.confirm_commands[tool_name]
-                
-                if needs_confirm:
-                    confirm = input(f"{Colors.YELLOW}Execute? (y/N): {Colors.RESET}").strip().lower()
-                    if confirm not in ('y', 'yes'):
-                        result = {"error": "User declined execution", "declined": True}
-                        print(f"{Colors.YELLOW}Skipped{Colors.RESET}")
+                # Check circuit breaker first
+                should_stop, stop_message = self.tool_breaker.check(tool_name, arguments)
+                if should_stop:
+                    print(f"{Colors.RED}{stop_message}{Colors.RESET}")
+                    result = {"error": stop_message, "stopped_by_breaker": True}
+                else:
+                    # Check if confirmation is needed
+                    needs_confirm = self.config.confirm_all
+                    if tool_name in self.config.confirm_commands:
+                        needs_confirm = self.config.confirm_commands[tool_name]
+                    
+                    if needs_confirm:
+                        confirm = input(f"{Colors.YELLOW}Execute? (y/N): {Colors.RESET}").strip().lower()
+                        if confirm not in ('y', 'yes'):
+                            result = {"error": "User declined execution", "declined": True}
+                            print(f"{Colors.YELLOW}Skipped{Colors.RESET}")
+                        else:
+                            result = self.tool_executor.execute(tool_name, arguments)
                     else:
                         result = self.tool_executor.execute(tool_name, arguments)
-                else:
-                    result = self.tool_executor.execute(tool_name, arguments)
                 
                 # Show result summary
                 if "error" in result:
@@ -1098,8 +1109,15 @@ class CoderClient:
                 except json.JSONDecodeError:
                     arguments = {}
                 
-                print(f"  → {tool_name}({arguments})")
-                result = self.tool_executor.execute(tool_name, arguments)
+                # Check circuit breaker first
+                should_stop, stop_message = self.tool_breaker.check(tool_name, arguments)
+                if should_stop:
+                    print(f"{Colors.RED}{stop_message}{Colors.RESET}")
+                    result = {"error": stop_message, "stopped_by_breaker": True}
+                else:
+                    print(f"  → {tool_name}({arguments})")
+                    result = self.tool_executor.execute(tool_name, arguments)
+                
                 tool_results.append({
                     "tool_call_id": tc['id'],
                     "role": "tool",