feat codex skills

skills/codex/scripts/codex.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+set -euo pipefail
+
+TASK="${1:-}"
+MODEL="${2:-gpt-5-codex}"
+WORKDIR="${3:-.}"
+
+if [ -z "$TASK" ]; then
+  echo "ERROR: Task required" >&2
+  exit 1
+fi
+
+codex e -m "$MODEL" --dangerously-bypass-approvals-and-sandbox --skip-git-repo-check -C "$WORKDIR" --json "$TASK" 2>/dev/null | \
+  jq -r 'select(.type == "item.completed" and .item.type == "agent_message") | .item.text' | \
+  tail -n 1