[Draft] Port to 1.21.11, implement Inventory/Container Sync & fix bugs#27

Draft

RCUTANF wants to merge 59 commits intohpfxd:mc/1.21.4from

Commits on May 29, 2025

Commits on Jun 29, 2025

Commits on Jun 30, 2025

Commits on Jul 1, 2025

Commits on Jul 5, 2025

roll up
cunhar
committed

Commits on Jul 12, 2025

Commits on Oct 3, 2025

fix
cunhar
committed

Commits on Nov 15, 2025

Commits on Nov 17, 2025

more fixes to remapped classes
cunhar
committed

Commits on Nov 19, 2025

Commits on Dec 11, 2025

update cloth config version to 20.0.149 to fix crash bug while click LAN settings in multiplayer game
RCUTANF
committed
fix：Refactor CustomPacketCodecs to use OPTIONAL_STREAM_CODEC for ItemStack serialization for fixing HotBar item decode fail.
RCUTANF
committed
feat: Implement effects synchronization for players in SpectatorPlus
RCUTANF
committed

Commits on Dec 12, 2025

fix: effect sync and render
RCUTANF
committed

Commits on Dec 13, 2025

fix: hand height calculations bug
RCUTANF
committed

Commits on Dec 14, 2025

Commits on Dec 17, 2025

fix: prevent incorrect arm orientation when spectating by skipping mulPose in renderItemInHand
RCUTANF
committed

Commits on Jan 2, 2026

fix: update fabric-loom plugin version to 1.13-SNAPSHOT
RCUTANF
committed

Commits on Jan 3, 2026

update to 1.21.11
RCUTANF
committed

Commits on Jan 4, 2026

fix: replace ResourceLocation with Identifier for packet type definitions
RCUTANF
committed

Commits on Jan 31, 2026

Commits on Feb 6, 2026

Commits on Feb 7, 2026