fix: execution utility edge cases for loops and gallery refs

- copyLoopOutput: add console.warn for unrecognized target node types
- connectedInputs: exclude loop edges from easeCurve edge lookup
- mediaStorage: trim gallery image/video refs to match actual array
  lengths after item deletion

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/store/utils/connectedInputs.ts

@@ -369,7 +369,7 @@ export function getConnectedInputsPure(
   // Extract easeCurve data from parent EaseCurve node (if not already set by router passthrough)
   if (!easeCurve) {
     const easeCurveEdge = edges.find(
-      (e) => e.target === nodeId && e.targetHandle === "easeCurve"
+      (e) => e.target === nodeId && e.targetHandle === "easeCurve" && !e.data?.isLoop
     );
     if (easeCurveEdge) {
       const sourceNode = nodes.find((n) => n.id === easeCurveEdge.source);

src/store/utils/executionUtils.ts

@@ -273,5 +273,7 @@ export function copyLoopOutput(
     updateNodeData(targetNode.id, { prompt: value });
   } else if (type === "audio" && targetNode.type === "audioInput") {
     updateNodeData(targetNode.id, { audioFile: value });
+  } else {
+    console.warn(`[copyLoopOutput] Unrecognized target: type="${type}" → node.type="${targetNode.type}"`);
   }
 }

src/utils/mediaStorage.ts

@@ -480,12 +480,16 @@ async function externalizeNodeMedia(
       const hasImageRefs = galleryImageRefs.some(r => r && r !== "");
       const hasVideoRefs = galleryVideoRefs.some(r => r && r !== "");
 
+      // Trim refs to match actual array lengths (stale trailing entries after deletions)
+      const trimmedImageRefs = galleryImageRefs.slice(0, d.images?.length || 0);
+      const trimmedVideoRefs = galleryVideoRefs.slice(0, d.videos?.length || 0);
+
       newData = {
         ...d,
         images: cleanedImages,
-        imageRefs: hasImageRefs ? galleryImageRefs : undefined,
+        imageRefs: hasImageRefs ? trimmedImageRefs : undefined,
         videos: cleanedVideos,
-        videoRefs: hasVideoRefs ? galleryVideoRefs : undefined,
+        videoRefs: hasVideoRefs ? trimmedVideoRefs : undefined,
       };
       break;
     }