Add a stronger-rotation transfer check for the combined solver

experiments/plateau_combined_cases.json

@@ -2,12 +2,31 @@
   {
     "id": "n1_J0_no_central_R160",
     "arguments": [
-      "--index", "1",
-      "--angular-momentum", "0",
+      "--index",
+      "1",
+      "--angular-momentum",
+      "0",
       "--no-central",
-      "--restart", "160",
-      "--max-newton", "8"
+      "--restart",
+      "160",
+      "--max-newton",
+      "8"
     ],
     "notes": "Nonrotating physical counterpart of the combined sandbox example; strict Newton tolerance and q14/q18 physical validation."
+  },
+  {
+    "id": "n1_J0p10_no_central_R160",
+    "arguments": [
+      "--index",
+      "1",
+      "--angular-momentum",
+      "0.1",
+      "--no-central",
+      "--restart",
+      "160",
+      "--max-newton",
+      "12"
+    ],
+    "notes": "Transfer check at twice the previously validated angular momentum, with unchanged numerical settings; no critical-rotation fraction is assumed."
   }
 ]