Litematica Printer 4th

• Fixed a full-inventory stall when QuickShulker's Direct API exhausts its material-return retries. A finished network request no longer causes the printer to forget material that still needs to be returned. Once connectivity recovers, the printer can free an inventory slot, retrieve the next material, and continue placing blocks without manual intervention.
• Partial returns retain the remaining work. Lost response packets after a successful server transfer are handled using the current synchronized inventory rather than blindly repeating the old operation.
• Return candidates are checked in a bounded rotation, so an unavailable original box does not prevent another eligible material from being returned.
• Includes the 26.1.2/26.2 Servux hand-confirmation gate fix previously distributed separately: enabling printer hand confirmation also enables the required handler-level entity-data requests, without changing Litematica's saved setting. This does not add cross-version Servux protocol compatibility.

QuickShulker's public API, Legacy integration, and dependency requirements are unchanged. This is not a general fix for every packet-loss or ghost-block scenario.