/gstack-upgrade

Upgrade gstack to the latest version and show what's new.

Inline upgrade flow

This section is referenced by all skill preambles when they detect UPGRADE_AVAILABLE.

Step 1: Ask the user (or auto-upgrade)

First, check if auto-upgrade is enabled:

_AUTO=""
[ "${GSTACK_AUTO_UPGRADE:-}" = "1" ] && _AUTO="true"
[ -z "$_AUTO" ] && _AUTO=$(~/.claude/skills/gstack/bin/gstack-config get auto_upgrade 2>/dev/null || true)
echo "AUTO_UPGRADE=$_AUTO"

If AUTO_UPGRADE=true or AUTO_UPGRADE=1: Skip AskUserQuestion. Log "Auto-upgrading gstack v{old} → v{new}..." and proceed directly to Step 2. If ./setup fails during auto-upgrade, restore from backup (.bak directory) and warn the user: "Auto-upgrade failed — restored previous version. Run /gstack-upgrade manually to retry."