feat: enterprise OTEL telemetry exporter (squash merge from feat/otel-telemetry-ee)

api/core/agent/errors.py

@@ -0,0 +1,9 @@
+class AgentMaxIterationError(Exception):
+    """Raised when an agent runner exceeds the configured max iteration count."""
+
+    def __init__(self, max_iteration: int):
+        self.max_iteration = max_iteration
+        super().__init__(
+            f"Agent exceeded the maximum iteration limit of {max_iteration}. "
+            f"The agent was unable to complete the task within the allowed number of iterations."
+        )