修复 UI 编辑器字体绑定

允许文本组件绑定项目字体资源

修正字体引用计数与删除回退

补充字体绑定状态回归测试

apps/ai-game-creator-shell/src/features/ui-editor/useUiEditorState.ts

@@ -292,6 +292,28 @@ function asRecord(value: unknown): Record<string, unknown> | null {
     : null;
 }
 
+function isBoundFontSource(value: unknown): value is { Bound: FontAssetId } {
+  const record = asRecord(value);
+  return (
+    record !== null &&
+    Object.keys(record).length === 1 &&
+    typeof record.Bound === 'string' &&
+    record.Bound.length > 0 &&
+    record.Bound.trim() === record.Bound
+  );
+}
+
+function isValidFontSource(value: unknown): boolean {
+  return value === 'SystemFont' || isBoundFontSource(value);
+}
+
+function isBoundToFont(
+  value: unknown,
+  id: FontAssetId,
+): value is { Bound: FontAssetId } {
+  return isBoundFontSource(value) && value.Bound === id;
+}
+
 function isValidFillMethod(method: unknown): boolean {
   const record = asRecord(method);
   if (!record) return false;
@@ -377,7 +399,7 @@ function isValidComponent(component: Component): boolean {
         text.font_sizing.BestFit.min <= text.font_sizing.BestFit.max);
     return (
       typeof text.content === 'string' &&
-      (text.font === null || typeof text.font === 'string') &&
+      isValidFontSource(text.font) &&
       sizingValid &&
       colorValid &&
       isEnumValue(text.alignment, [
@@ -443,7 +465,7 @@ export function fontAssetRemovalImpact(
   let clearedFontCount = 0;
   for (const tree of state.ui_trees) {
     visitComponents([tree.root], (component) => {
-      if ('Text' in component && component.Text.font === id) {
+      if ('Text' in component && isBoundToFont(component.Text.font, id)) {
         clearedFontCount += 1;
       }
     });
@@ -1359,7 +1381,7 @@ export function useUiEditorState(initialState: State = EMPTY_UI_EDITOR_STATE) {
       delete next.font_assets[id];
       for (const tree of next.ui_trees) {
         visitComponents([tree.root], (component) => {
-          if ('Text' in component && component.Text.font === id) {
+          if ('Text' in component && isBoundToFont(component.Text.font, id)) {
             component.Text.font = 'SystemFont';
           }
         });

apps/ai-game-creator-shell/tests/uiEditorState.test.ts

@@ -456,7 +456,7 @@ describe('useUiEditorState', () => {
     );
   });
 
-  it('dry-runs and clears Text font references without deleting project files', () => {
+  it('accepts and clears bound Text font references without deleting project files', () => {
     const initial: State = {
       ...structuredClone(EMPTY_UI_EDITOR_STATE),
       font_assets: { body: font('body') },
@@ -471,7 +471,8 @@ describe('useUiEditorState', () => {
               {
                 Text: {
                   content: '你好',
-                  font: 'body',
+                  font: { Bound: 'body' },
+                  font_style: 'Normal',
                   font_sizing: { Fixed: 14 },
                   color: [255, 255, 255, 255],
                   alignment: 'UpperLeft',
@@ -488,6 +489,16 @@ describe('useUiEditorState', () => {
     const { result } = renderHook(() => useUiEditorState(initial));
 
     act(() => {
+      expect(
+        result.current.setNodeComponents('page', 'text-root', [
+          {
+            Text: {
+              ...initial.ui_trees[0]!.root.components[0]!.Text!,
+              font: { Bound: 'body' },
+            },
+          },
+        ]),
+      ).toEqual({ ok: true, value: undefined });
       expect(result.current.removeFontAsset('body', { dryRun: true })).toEqual({
         ok: true,
         value: {
@@ -502,7 +513,7 @@ describe('useUiEditorState', () => {
     });
     expect(result.current.state.font_assets.body).toBeUndefined();
     expect(result.current.state.ui_trees[0]?.root.components[0]).toMatchObject({
-      Text: { font: null },
+      Text: { font: 'SystemFont' },
     });
   });