feat: add official Codex skill and harden task execution

Install and update artemis-use with task diagnostics and plugin guidance. Preserve cross-device file receipts, review canonical reports, guard stage transitions and reduce small history summaries. Improve exploration lifecycle, request recovery and browser live connections.

artemis/llm/diagnostics.py

@@ -14,6 +14,7 @@ from PIL import Image
 
 from artemis.data_engine.context_vars import CURRENT_NODE_NAME, CURRENT_TRACE_ID
 from artemis.llm.usage import usage_from_message
+from artemis.llm.stream_guard import ToolArgumentOverflow
 
 logger = logging.getLogger(__name__)
 ACTIVE_ATTEMPT: ContextVar["RequestAttempt | None"] = ContextVar("llm_attempt", default=None)
@@ -184,6 +185,8 @@ class RequestAttempt:
 
     def finish(self, phase, *, response=None, error=None, category=None):
         if error is not None:
+            if isinstance(error, ToolArgumentOverflow):
+                self.data["stream_guard"] = error.details
             self.data.update(
                 error=error_text(error, self.data["timeout_seconds"]),
                 error_type=type(error).__name__,