Adrian, 2026-11-03: guardians get a boss health bar like the Wither's, which
also leads players to them. Every player within 128 blocks of a living
guardian sees a red bar of their own (GuardianBars): name, zone, how many
blocks away, and HP. The End boss keeps the dragon's bar.
guardian_appears_and_returns checks the bar appears and goes once beaten.
Self-tests and the island check pass.
Phase 7 approved ("Then begin with the next phase"); README status updated.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
claudeandClaude Opus 5.5
fe6b8dfe57