v0.12.4

Fixed

• Don't propose deleting the Windows-side global config when
  running from WSL. From inside WSL, homedir() returns the
  Linux home (/home/<X>), but the user's effective cwd is often
  /mnt/c/Users/<Y> — the Windows-side home. The legacy-config
  migration prompt's "this is a project-level config" check only
  bailed when cwd === home literally, so on WSL it incorrectly
  offered to delete the Windows-native .agenthud/config.yaml —
  potential data loss. The check now also recognises
  /mnt/<drive>/Users/<name> as a user home only when running
  inside WSL, where homedir() is known to lie. Native
  Linux/macOS/Windows behavior is unchanged.
• Internal: isWSL() moved to src/utils/platform.ts so both
  openInDefaultApp and legacyConfig share one detector (env
  var + /proc/version markers, cached for the process).