Skogsra type for path lists set via environment variables.

Uses : as separator on Unix and ; on Windows, matching each platform's PATH convention. Both separators are accepted on all platforms so that cross-platform config files stay portable. Drive-letter colons (e.g. C:) are never mistaken for separators because they are immediately followed by \ or /.

Examples: Unix: ~/.planck/skills:.planck/skills Windows: ~/.planck/skills;.planck/skills