interface SkillsMiddlewareOptionsBackend instance or factory function for file operations. Use a factory for StateBackend since it requires runtime state.
List of skill source paths to load. Paths must use POSIX conventions (forward slashes). Later sources override earlier ones for skills with the same name (last one wins).
Two formats are accepted for each entry:
Parent directory (e.g. "/skills/", "/skills/user/"): the directory
is scanned and every subdirectory that contains a SKILL.md is loaded as
a separate skill.
Direct skill path (e.g. "/skills/my-skill/"): the path points to a
single skill directory whose SKILL.md lives at its root. Detected
automatically when the directory listing contains a SKILL.md file.
Both formats can be mixed in the same array:
sources: [
"/skills/", // loads all skills in the directory
"/skills/my-skill/", // loads a single skill by path
]