v1.3.9

Fixed

• Cross-platform commands: Rewrote /init and /update commands to use Python with pathlib instead of bash-only commands (mkdir -p, rm -rf, find). Now works on Windows without bash.
• Python fallback: All inline Python uses python3 ... || python ... pattern for cross-platform compatibility.
• Hook matchers: Removed matcher from SessionStart/SessionEnd/Stop hooks per Claude Code documentation.