Move library collections as a group and map v2 identity refs.

Collapsed collection actions now move, rename, delete, and rerun every part so chains stay together. Identity mode follows the v2u3 Ref2VA picture wiring.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/assets/workflow_minimax_video_v2.json

@@ -62,7 +62,7 @@
   },
   "141": {
     "inputs": {
-      "image": ""
+      "image": "Mokker (1).jpeg"
     },
     "class_type": "LoadImage",
     "_meta": {
@@ -71,7 +71,7 @@
   },
   "142": {
     "inputs": {
-      "image": ""
+      "image": "Mokker (1).jpeg"
     },
     "class_type": "LoadImage",
     "_meta": {
@@ -80,7 +80,7 @@
   },
   "143": {
     "inputs": {
-      "image": ""
+      "image": "Mokker (1).jpeg"
     },
     "class_type": "LoadImage",
     "_meta": {
@@ -107,7 +107,10 @@
         "127",
         1
       ],
-      "length": 241,
+      "length": [
+        "174",
+        1
+      ],
       "ref_image_size": "match",
       "clip": [
         "170",