feat: 题卡学号填涂展示调整

card/elements/card-head/cardHeadSpin/HeadStdno.vue

@@ -87,7 +87,9 @@ export default {
       );
       if (!curRelation) return [...this.defaultColumnFills];
 
-      return curRelation.letters;
+      return this.defaultColumnFills.map(
+        (item, index) => curRelation.letters[index] || ""
+      );
     },
   },
 };