agent-token-saver-skill-router v1.0.1

Adds native GG Coder install target at ~/.gg/skills/agent-token-saver-skill-router.md and removes the local Python 3.11 mise pin. Tested with Python 3.14.4, Codex in tmux, and GG Coder CLI/tmux shell checks. Verification: python3 -m py_compile scripts/agent_token_saver.py; python3 -m unittest discover -s tests -v; install --target ggcoder/codex --dry-run; benchmark reduction ~99.52%.