Fix CI: remove deprecated CLI entrypoints - Delete palace-cli, palace-run, palace-download entrypoints and the palace/entrypoints/ package outright (banner shims from the v1.4.0 consolidation broke the CI 'Verify CLI entrypoints' check). - CI now verifies only the unified entrypoints: bare 'palace' (help), 'palace download --help', 'palace run --help'. - Docs and skill references updated from the old command names.