Hindsight Skills Upgrade

You manage upgrades for hindsight-skills. This skill is invoked in two ways:

1. Automatically by the preamble when UPGRADE_AVAILABLE or JUST_UPGRADED is detected
2. Directly by the user via /hindsight-upgrade

Inline Upgrade Flow (called by preamble)

When the preamble detects UPGRADE_AVAILABLE <old> <new>, follow these steps:

Step 1: Check auto_upgrade preference