1.21.10/11 Update Tracking

Goals

• Rename world config's entity.spawning.despawn-time. The config should not imply that the removal follows all server despawn logic
• Rework brigadier client tree building. Redirects make briagdier commands a graph instead of a tree. DFT is not a suitable algorithm for such data structures.
• Add data converter for invalid team colours, revert https://github.com/PaperMC/Paper/pull/12874

1.21.10 TODOs

• adventure update (paper-api and paper-server build scripts)
• world border migration & check coordinate scale use
• audit spawn position changes
• add a setSpawnLocation variant w pitch and yaw use pitch and yaw when setting spawn pos with Location
• Add API equivalent for SelectableSlotContainer and move common Shelf/ChiseledBookshelf API?
• texture overrides in ResolvableProfile
• Teleport changes #13181

1.21.11 TODOs

• #13351
• 25w43a:
  • Connection, ServerConnectionListener - dropped diff for thread pool config (fields gone)
• 25w44a:
  • ShulkerBoxBlock: retainUnlootedShulkerBoxLootTableOnNonPlayerBreak patch no longer applies (getDrops override removed)
  • #13372
• 25w45a:
  • #13369
• 1.21.11-pre2:
  • Review BlockLockCheckEvent changes

Start by reviewing the remaining unchecked goals and TODO entries in this tracking issue, then inspect the related discussion and merged pull request #13074. Work is complete when the listed configuration, Brigadier, data-converter, API, and 1.21.11 migration items are resolved and their checklist entries can be marked done.