Update Swain

Update the local installation of swain skills to the latest version, then reconcile governance configuration.

Step 1 — Detect current installation

Check whether .claude/skills/ contains any swain-* directories:

ls -d .claude/skills/swain-* 2>/dev/null

If no swain skill directories are found, inform the user this appears to be a fresh install rather than an update, then continue anyway — the steps below work for both cases.

Step 2 — Backup local modifications

Before overwriting skill directories, check for user modifications that should be preserved.