Skip the crafting network lookup of an idle crafting interface

CraftingJobHandler.update looked the crafting network capability up to find a
job to start, even when the handler has no pending jobs at all, which is what
every idle crafting interface does on every tick. It also repeated that same
lookup for every finished job instead of once.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MxquU3sDjDpKbeHrVyrV1t

Author: claude

src/main/java/org/cyclops/integratedcrafting/core/CraftingJobHandler.java

@@ -429,10 +429,10 @@ public void update(INetwork network, int channel, PartPos targetPos) {
 
         // Notify the network of finalized crafting jobs
         if (finishedCraftingJobs.size() > 0) {
+            ICraftingNetwork craftingNetwork = CraftingHelpers.getCraftingNetworkChecked(network);
             for (CraftingJob finishedCraftingJob : finishedCraftingJobs.values()) {
                 if (finishedCraftingJob.getAmount() == 0) {
                     // If the job is fully finished, remove it from the network
-                    ICraftingNetwork craftingNetwork = CraftingHelpers.getCraftingNetworkChecked(network);
                     craftingNetwork.onCraftingJobFinished(finishedCraftingJob);
                     allCraftingJobs.remove(finishedCraftingJob.getId());
                     nonBlockingJobsRunningAmount.remove(finishedCraftingJob.getId());
@@ -471,7 +471,9 @@ public void update(INetwork network, int channel, PartPos targetPos) {
             }
         }
 
-        if (processingJobs < this.maxProcessingJobs) {
+        // Only look for a job to start if this handler has room for one, and has something to start.
+        // Skipping this block for an idle handler avoids a crafting network lookup for every idle tick.
+        if (processingJobs < this.maxProcessingJobs && !this.pendingCraftingJobs.isEmpty()) {
             // Handle crafting jobs
             CraftingJob startingCraftingJob = null;
             ICraftingNetwork craftingNetwork = CraftingHelpers.getCraftingNetworkChecked(network);