feat: checkpoint device agent runtime milestones

core/errors.py

@@ -1,30 +1,29 @@
 from __future__ import annotations
 
 
-class ApexAgentError(Exception):
+class DeviceRuntimeError(Exception):
     """Base error for semantic errors surfaced above the driver layer."""
 
 
-class DriverError(ApexAgentError):
+class DriverError(DeviceRuntimeError):
     """A driver operation failed."""
 
 
-class DeviceNotFoundError(ApexAgentError):
+class DeviceNotFoundError(DeviceRuntimeError):
     """A requested device id is unknown."""
 
 
-class DeviceOfflineError(ApexAgentError):
+class DeviceOfflineError(DeviceRuntimeError):
     """A device is unavailable or lost its connection."""
 
 
-class DeviceBusyError(ApexAgentError):
+class DeviceBusyError(DeviceRuntimeError):
     """A device is already in use."""
 
 
-class ElementNotFoundError(ApexAgentError):
+class ElementNotFoundError(DeviceRuntimeError):
     """A requested screen element was not found."""
 
 
-class TaskFailedError(ApexAgentError):
+class TaskFailedError(DeviceRuntimeError):
     """A task failed before reaching its goal."""
-