v0.16.0 -- prompt-template + mcp artifact types Adds first-class manifest support for two new artifact types alongside skills: - prompt-template (writes to .claude/prompt-templates/) - mcp (writes to .claude/mcps/) Companion bug fix: commit_and_push now resolves the destination directory per artifact type instead of hardcoding the skill path, so pushes against prompt-template and mcp registries land correctly. Tracked at andunn/tanuki harness/pi-extension-self-doc and nomograph follow-up work that depends on the new types.