Fabric 0.9.0 Port

Target: Minecraft 1.20.1, Fabric Loader 0.18.5, Fabric API 0.92.11+1.20.1, Java 17.

Release status: coordinated final beta alongside endless-0.9.0-forge.

Ported content

• all seven Endless branches, rituals, powers, duties, loss states, realms, Domain Seats, Galleries, Sigils, and relic manuscripts;
• Ancient Rules, Family invitations, offline delivery, Council Invitations, and Emergency Summons;
• all 21 isolated-pair Convergence effects;
• all registry identifiers, commands, configuration accessors/defaults, packet payloads, saved data, dimensions, worldgen, loot hooks, advancements, models, textures, blockstates, and translations;
• Forge-compatible ForgeData and PlayerPersisted NBT layouts for entity and block-entity state.

Fabric integration

• Fabric common and client entrypoints;
• Fabric lifecycle, command, loot, networking, interaction, living-entity, block-break, connection, respawn, tick, rendering, screen, tooltip, and keybinding callbacks;
• focused mixins for API gaps: advancement awards, block placement, item-use completion, pickup, toss, natural spawn checks, and persistent NBT;
• protocol-4 login handshake that rejects missing or mismatched clients before play;
• client-side rejection of servers without the Endless networking channels.