cli-v0.14.1

Release 0.14.1: ship the expanded agent skill

The wikidown skill and agent files now cover publishing, site templates,
_data, landing pages, PDF and maps. They are embedded in the CLI, so
downstream repos only get them through a release plus wikidown init --force.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>