The script auto-detected PYTHON_CMD but then hardcoded `python3` for the
JSON write (exit 127 on Windows where only `py` exists), and passed a Git
Bash POSIX path (/d/...) to native Python (FileNotFoundError). Fixes:
- use "$PYTHON_CMD" instead of hardcoded python3
- convert IDENTITY_PATH via `cygpath -m` for the interpreter (no-op elsewhere)
Verified on GURU-5070: identity.json migrated correctly (py, windows/amd64,
localhost Ollama, qwen3:8b).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Mike Swanson
251bb3546b