Chunksmith

Fixed

• Pregeneration silently generated nothing when C2ME was installed (Fabric, all versions). Reported as mod_support #13 on Minecraft 1.21.1 Fabric: Chunksmith reported thousands of chunks generated, in effectively zero seconds, and no terrain was written. Every Fabric build from 3.2.0 onward was affected on every Minecraft version, not only 1.21.1.

  Root cause: 3.2.0 propagated the C2ME ticket-race guard fleet-wide, which correctly skips the forced runDistanceManagerUpdates() call when C2ME is present. But that call is also what builds the ChunkHolder for the chunk ticket Chunksmith had just added, and the follow-up getChunkFutureMainThread(x, z, FULL, create) was still being passed create = false. With no holder and no permission to create one, it returned an immediately-completed FAILED ChunkResult ("unloaded chunk"). A failed ChunkResult is not an exception, so the completion callback saw a null throwable, released the ticket, and counted the chunk as finished. The result was a pregen that reported complete success at impossible speed while doing no work.

  Fix: when either C2ME or Moonrise is present, getChunkFutureMainThread is now allowed to create the holder itself (create = true). The forced distance-manager call stays skipped under C2ME, so the 3.1.5 ticket-race crash fix is preserved. Moonrise already used this exact mechanism for the same underlying reason.

  Verified by disk state rather than by Chunksmith's own progress counter: a fixed 4225-chunk selection now writes 4225 chunks at minecraft:full into the region files with C2ME installed, matching the no-C2ME control exactly. Before the fix the same selection wrote 49.