Migrated to Official Mojang Mappings (Yarn 1.21.8 → Mojang 26.2)

This release replaces Yarn mappings with official Mojang mappings across the entire codebase. Every rename below was verified against the actual deobfuscated 26.2 jars using javap/CFR — nothing here is guessed or carried over from changelogs/diffs, so symbol names should be accurate to the real classes.

This is primarily an internal/API change. No gameplay behavior should be different, but if you depend on this mod's classes, mixins, or access widener, read the breaking changes below.

Type & Member Renames

~45 net.minecraft.* types renamed mod-wide, plus the method/field renames the compiler surfaced once Mojang names resolved. Highlights:

Yarn	Mojang
MinecraftClient	Minecraft
ClientPlayerEntity	LocalPlayer
ClientPlayNetworkHandler	ClientPacketListener
Text	Component
Vec3d	Vec3
MathHelper	Mth
World	Level
GameMode	GameType
PlayerPosition	PositionMoveRotation

Plus ~45 packet class renames, e.g.:

• GameJoinS2CPacket → ClientboundLoginPacket
• EntityS2CPacket.RotateAndMoveRelative → ClientboundMoveEntityPacket.PosRot
• Status ping packets moved into the ping package

Method-level renames caught by the compiler:

• player.sendMessage(text, false) → sendSystemMessage(text)
• getStatus() → getEventId()
• getReason() → getEvent()
• ChunkPos.toLong() → ChunkPos.pack()
• PlayerAbilities.unpack() → Abilities.apply()

Access Widener

Retargeted to the Mojang-mapped members:

• Connection.channel
• PacketDecoder / PacketEncoder.protocolInfo (formerly DecoderHandler.state)
• ClientboundLoginPacket.commonPlayerSpawnInfo
• CommonPlayerSpawnInfo.gameType

Breaking: Network Pipeline Mixin Rework

ClientConnectionMixin is now @Mixin(Connection.class). This needed real rework, not just a rename — 26.2's Connection no longer has addHandlers.

• Static pipeline injector retargeted to configureSerialization, matching its actual (ChannelPipeline, PacketFlow, boolean, BandwidthDebugMonitor) signature.
• @Shadow target switched from side to receiving.
• accepts(...) → shouldHandleMessage(...).
• Fixed the send(...) method descriptor to match the new signature.

Breaking: Spectator Server Network Handler Rebuilt

SpectatorServerNetworkHandler's manual protocol state machine has been rebuilt on top of Mojang's ProtocolInfo / UnconfiguredPipelineHandler system:

• NetworkStateTransitions → setupInboundProtocol / setupOutboundProtocol, now returning configuration tasks instead of mutating state directly.
• PacketBundler / PacketUnbundler → PacketBundlePacker / PacketBundleUnpacker.
• Yarn's state factories replaced with Mojang's HandshakeProtocols, StatusProtocols, ConfigurationProtocols, LoginProtocols, and GameProtocols.
• Protocol templates are now bound via RegistryFriendlyByteBuf.decorator, including the creative-mode GameProtocols.Context.

Fixes (surfaced by the migration, not mapping-related)

• Cloth Config: getConfigScreen moved from AutoConfig to AutoConfigClient in the pinned 26.2-compatible version — updated call sites accordingly.
• Client command tree: the deeply nested command tree was failing generic inference through Brigadier's raw static helpers once names resolved. Added local FabricClientCommandSource-typed literal/argument factories (filling the role ClientCommandManager would play, which isn't present in this Fabric build) so S infers correctly.

Notes for Downstream Mods / Contributors

If you reference this mod's mixins, access-widened members, or any of the renamed classes directly, those references need updating to the Mojang-mapped names above — particularly anything touching Connection, the pipeline configuration mixin, or SpectatorServerNetworkHandler's protocol setup, since those changed shape rather than just name.