Replace install/uninstall with add/remove, add publish for git ops in
~/.skills, and resolve bin/skiff symlinks so commands work from any cwd.
Co-authored-by: Cursor <cursoragent@cursor.com>
Add owned skill for discussion mode with continuous Markdown沉淀,
templates in reference.md, and registry entry in AGENTS.md.
Co-authored-by: Cursor <cursoragent@cursor.com>