复用引用节点插入逻辑

统一资源与 Skill 候选的 Lexical 节点插入流程

避免两个选择处理器在删除查询和关闭菜单行为上漂移

apps/ai-game-creator-shell/src/features/project-workspace/ResourceReferenceInput.tsx

@@ -858,41 +858,15 @@ function ResourceReferenceEditor({
     [editor, pickerOpen],
   );
 
-  const handleSelectMention = useCallback(
+  const insertReferenceNode = useCallback(
     (
-      option: ResourceMentionOption,
+      reference: ChatReference,
       textNodeContainingQuery: TextNode | null,
       closeMenu: () => void,
     ) => {
       textNodeContainingQuery?.remove();
       const selection = $getSelection();
-      if ($isRangeSelection(selection)) {
-        selection.insertNodes([
-          $createResourceReferenceNode(option.reference),
-          $createTextNode(' '),
-        ]);
-      } else {
-        const paragraph = $createParagraphNode();
-        paragraph.append(
-          $createResourceReferenceNode(option.reference),
-          $createTextNode(' '),
-        );
-        $getRoot().append(paragraph);
-      }
-      closeMenu();
-    },
-    [],
-  );
-
-  const handleSelectSkill = useCallback(
-    (
-      option: SkillMentionOption,
-      textNodeContainingQuery: TextNode | null,
-      closeMenu: () => void,
-    ) => {
-      textNodeContainingQuery?.remove();
-      const selection = $getSelection();
-      const node = $createResourceReferenceNode(option.skill);
+      const node = $createResourceReferenceNode(reference);
       if ($isRangeSelection(selection)) {
         selection.insertNodes([node, $createTextNode(' ')]);
       } else {
@@ -905,6 +879,28 @@ function ResourceReferenceEditor({
     [],
   );
 
+  const handleSelectMention = useCallback(
+    (
+      option: ResourceMentionOption,
+      textNodeContainingQuery: TextNode | null,
+      closeMenu: () => void,
+    ) => {
+      insertReferenceNode(option.reference, textNodeContainingQuery, closeMenu);
+    },
+    [insertReferenceNode],
+  );
+
+  const handleSelectSkill = useCallback(
+    (
+      option: SkillMentionOption,
+      textNodeContainingQuery: TextNode | null,
+      closeMenu: () => void,
+    ) => {
+      insertReferenceNode(option.skill, textNodeContainingQuery, closeMenu);
+    },
+    [insertReferenceNode],
+  );
+
   // —— C8 AI 润色与发送前提醒 ——
   // 润色状态机抽到 `usePromptPolish`（资源侧两处入口共用同一份）；这里只剩下
   // 聊天特有的「发送前提醒」：提醒偏好、本轮已确认草稿指纹与表单拦截。