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/graph/visibility.py

@@ -99,6 +99,7 @@ NODE_VISIBILITY: dict[str, NodeVisibility] = {
         },
         writes={
             "structured_decisions",
+            "execution_report",
             "operator_raw_thinking",
             "operator_native_thinking",
             "indexed_points",
@@ -164,11 +165,11 @@ NODE_VISIBILITY: dict[str, NodeVisibility] = {
         writes=set(),
     ),
     "convergence": _vis(
-        reads={"checker_success", "user_stop_requested"},
+        reads={"checker_success", "user_stop_requested", "execution_report"},
         writes=set(),
     ),
     "exit_settlement": _vis(
-        reads={"user_stop_requested", "initial_goal"},
+        reads={"user_stop_requested", "initial_goal", "execution_report"},
         writes={"exit_settlement_route", "operator_feedback", "run_outcome"},
     ),
 }