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.

apps/admin_console/routers/exploration.py

@@ -23,6 +23,23 @@ from apps.admin_console.services.exploration_service import exploration_service
 router = APIRouter(prefix="/api/explorations", tags=["exploration"])
 
 
+@router.get("/{exploration_id}/deletion-preview")
+def preview_deletion(exploration_id: str):
+    from apps.admin_console.services.task_deletion import exploration_deletion_preview
+
+    with domain_errors():
+        return exploration_deletion_preview(exploration_id)
+
+
+@router.delete("/{exploration_id}")
+def delete_conversation(exploration_id: str):
+    from apps.admin_console.services.exploration_deletion import delete_exploration
+
+    with domain_errors():
+        deleted = delete_exploration(service.repository, exploration_id)
+        return {"status": "success", "deleted_session_ids": deleted}
+
+
 @contextmanager
 def domain_errors():
     try: