Install and activate skills mid-session with `reloadSkills: true` from a SessionStart hook

Releasebot·low signal

Claude Code now lets a SessionStart hook return `reloadSkills: true` so skills it writes to disk become available in the same session instead of after a restart. That makes it practical to bootstrap project-specific skills dynamically — detect the repo type, drop in the matching SKILL.md, and have it live immediately. Use it to auto-provision a tailored skill set per project at session open, removing the manual 'restart so it picks up the new skill' step.