Blastback Hotfix 3

Hotfix 3 is the scheduler and Minecraft 26.3 compatibility release for Java 1.21.1, 26.2, and 26.3.

Performance

• Reduced minecraft:tick from 389 function entries to exactly one erb:tick dispatcher.
• Removed the 256 capture roots, 64 player watcher roots, 64 final-audit roots, and restoration continuation roots from permanent tick registration.
• Capture, restoration, verification, and item cleanup now use self-scheduling pumps that stop when their work queue becomes empty.
• Unloaded captures and groups retain persistent counters and poll for resumed chunks once every 20 ticks instead of running their full workers every tick.
• Idle source discovery is type-constrained and phased. Tracked fuse-sensitive sources and projectiles continue receiving timing-sensitive updates.
• Replaced the per-player full bed/anchor volume scan with a short look ray plus a resumable 16-block global scan budget after player cell/dimension changes.

Reliability and behavior

• Preserved grouped capture, exact state/NBT restoration, protected items, dependency ordering, verification retries, permissions, and restart recovery.
• Verified co-located 1, 4, and 32 TNT without missing blocks, duplicated items, leftover drops, pending snapshots, or command-limit warnings on official 26.3.
• Verified normal/charged creepers, TNT minecarts, end crystals, fireballs, and normal/dangerous wither skulls on official 26.3.
• Fixed phased end-crystal discovery after the scheduler rewrite.
• Fixed restoration timers advancing more than once per server tick.
• Moved disabled-mode stale cleanup to the 20-tick dormant poll.
• Torches, grass, vegetation, redstone, attachments, and fluids intentionally restore later than their supporting blocks.

Administration

• Settings require permission level 2 or higher.
• Open settings with /function erb:admin/settings.
• Legacy /trigger erb.settings set 1 remains intentionally inert.
• /trigger erb.status remains the read-only status command.

Compatibility and migration

• Added a dedicated Minecraft Java 26.3 build using datapack format 121.0 and the official 26.3 block-state report.
• Added schema v10 activity counters while preserving settings, saved blocks, protected items, pending groups, and unresolved verification work.
• Master disable and uninstall now cancel every scheduled Hotfix 3 pump.
• Retained Hotfix 2's reliability, protected-item, exact state/NBT, permissions, grouping, animation, dependency, and retry behavior.