Immortality+

Security

• /immortal and /immortallist now require OP level 2 (GAMEMASTERS_CHECK) — previously ungated, any player could toggle immortality on anyone Fixes
• Death cancel no longer re-kills the next tick: handler now unconditionally sets health to 1.0 (was Math.max(1.0f, getHealth()), which left lethal-damage victims at ≤0 HP for vanilla's isDead check)
• /immortal failures now surface the real CommandSyntaxException message instead of the generic "execute as player" fallback that fired even when the sender was a player
• /immortal success no longer broadcasts to all ops (feedback set to false)

Metadata

• fabric.mod.json environment: * → server (this is a server-side-only mod)
• fabricloader depends: >=0.18.4 → >=0.19.3 (matches actual loader)
• fabric-api depends: * → >=0.141.4+1.21.11 (was unbounded)

Cleanup

• Removed per-death INFO log spam, duplicate set-logging in toggleImmortal
• Dropped misleading "try to get name from user cache" comment in /immortallist (UserCache has no public getter in 1.21.11; offline entries honestly show truncated UUID) Known minor issues deferred from this release: save file lacks trailing newline/fsync; loadImmortalPlayers runs on SERVER_STARTING with a clear() (theoretical risk on integrated-server world switch). Both low priority.