diff --git a/apps/ai-game-creator-shell/src/contracts/assetKind.ts b/apps/ai-game-creator-shell/src/contracts/assetKind.ts
index c4ec744e4..58ce50634 100644
--- a/apps/ai-game-creator-shell/src/contracts/assetKind.ts
+++ b/apps/ai-game-creator-shell/src/contracts/assetKind.ts
@@ -2,36 +2,54 @@ import type { GameCreationAppAssetKind } from './generated/GameCreationAppAssetK
 
 export type { GameCreationAppAssetKind } from './generated/GameCreationAppAssetKind';
 
-export const GAME_CREATION_APP_ASSET_KINDS = [
-  'image',
-  'scene',
-  'character',
-  'character-animation',
-  'icon',
-  'icon-spritesheet',
-  'icon-spec',
-  'ui-design',
-  'ui-design-doc',
-  'publication-material',
-  'spec',
-  'video',
-  'audio',
-  'sound-effect',
-  'background-music',
-  'font',
-  'document',
-  'code',
-  'unknown',
-] as const satisfies readonly GameCreationAppAssetKind[];
+/**
+ * 穷举生成的 union：这里多写或少写一个成员都会直接报类型错误，
+ * 避免再维护一份与 `GameCreationAppAssetKind.ts` 分叉的手写列表。
+ */
+const GAME_CREATION_APP_ASSET_KIND_MEMBERS: Record<
+  GameCreationAppAssetKind,
+  true
+> = {
+  image: true,
+  scene: true,
+  character: true,
+  'character-animation': true,
+  icon: true,
+  'icon-spritesheet': true,
+  'icon-spec': true,
+  'ui-design': true,
+  'ui-design-doc': true,
+  'publication-material': true,
+  spec: true,
+  video: true,
+  audio: true,
+  'sound-effect': true,
+  'background-music': true,
+  font: true,
+  document: true,
+  code: true,
+  unknown: true,
+};
+
+export const GAME_CREATION_APP_ASSET_KINDS: readonly GameCreationAppAssetKind[] =
+  Object.keys(
+    GAME_CREATION_APP_ASSET_KIND_MEMBERS,
+  ) as GameCreationAppAssetKind[];
 
 const KNOWN_ASSET_KINDS = new Set<string>(GAME_CREATION_APP_ASSET_KINDS);
 
+export function isGameCreationAppAssetKind(
+  raw: unknown,
+): raw is GameCreationAppAssetKind {
+  return typeof raw === 'string' && KNOWN_ASSET_KINDS.has(raw);
+}
+
 export function parseGameCreationAppAssetKind(
   raw: unknown,
   context: string,
 ): GameCreationAppAssetKind {
-  if (typeof raw === 'string' && KNOWN_ASSET_KINDS.has(raw)) {
-    return raw as GameCreationAppAssetKind;
+  if (isGameCreationAppAssetKind(raw)) {
+    return raw;
   }
 
   const rawValue = typeof raw === 'string' ? raw : String(raw);
diff --git a/apps/ai-game-creator-shell/src/view/project-development/index.tsx b/apps/ai-game-creator-shell/src/view/project-development/index.tsx
index 790552ead..41cc55ff4 100644
--- a/apps/ai-game-creator-shell/src/view/project-development/index.tsx
+++ b/apps/ai-game-creator-shell/src/view/project-development/index.tsx
@@ -96,7 +96,10 @@ import {
   isFloatingOverlayWheelEvent,
   useImageCanvasFloatingOptionDismiss,
 } from '../../../../../src/components/image-editor/useImageCanvasFloatingOptionDismiss';
-import { parseGameCreationAppAssetKind } from '../../contracts/assetKind';
+import {
+  isGameCreationAppAssetKind,
+  parseGameCreationAppAssetKind,
+} from '../../contracts/assetKind';
 import { DesignWorkspacePanel } from '../../features/project-workspace/DesignWorkspacePanel';
 import {
   LocalGamePreviewFrame,
@@ -6096,7 +6099,11 @@ export default function ProjectDevelopmentView({
               sourceResourceId: resource.id,
               sourcePath: resource.path,
               sourceMediaType: canonicalProjectedResourceMediaType(resource),
-              sourceSubtype: resource.subtype,
+              // sourceSubtype 只接受 manifest 的正式 kind；任务产物等非 manifest
+              // 来源不通过该字段传递。
+              sourceSubtype: isGameCreationAppAssetKind(resource.subtype)
+                ? resource.subtype
+                : null,
               producerTaskId: resource.producerTaskId ?? '',
             },
           }),
diff --git a/apps/ai-game-creator-shell/tests/assetKindCanonicalMapping.test.ts b/apps/ai-game-creator-shell/tests/assetKindCanonicalMapping.test.ts
index 12d9fc4c0..7584ff535 100644
--- a/apps/ai-game-creator-shell/tests/assetKindCanonicalMapping.test.ts
+++ b/apps/ai-game-creator-shell/tests/assetKindCanonicalMapping.test.ts
@@ -44,7 +44,9 @@ function rustAssetKindAliases(): Map<string, string> {
 
 /** 从 Rust 侧解析 canonical kind 常量目录。 */
 function rustCanonicalKinds(): string[] {
-  const source = readFileSync(RUST_CONTRACT_PATH, 'utf8');
+  const source = expandRustAssetKindConsts(
+    readFileSync(RUST_CONTRACT_PATH, 'utf8'),
+  );
   const start = source.indexOf(
     'pub const GAME_CREATION_APP_CANONICAL_ASSET_KINDS',
   );
@@ -53,6 +55,27 @@ function rustCanonicalKinds(): string[] {
   return Array.from(body.matchAll(/"([^"]+)"/g)).map((match) => match[1]!);
 }
 
+/**
+ * 把 Rust 侧 `pub const ..._ASSET_KIND: &str = "..."` 的常量引用展开成字符串字面量。
+ *
+ * 共享契约里 `ui-design-doc` 等 kind 是常量（如
+ * `GAME_CREATION_APP_UI_DESIGN_DOC_ASSET_KIND`）而不是裸字面量，不展开时下面的正则解析会
+ * 漏掉这些条目，两侧目录比对就会假红。
+ */
+function expandRustAssetKindConsts(source: string): string {
+  const consts = new Map<string, string>();
+  for (const decl of source.matchAll(
+    /pub const (\w*ASSET_KIND\w*)\s*:\s*&str\s*=\s*"([^"]+)";/g,
+  )) {
+    consts.set(decl[1]!, decl[2]!);
+  }
+  let expanded = source;
+  for (const [name, value] of consts) {
+    expanded = expanded.replaceAll(name, `"${value}"`);
+  }
+  return expanded;
+}
+
 /** Rust 的 `GameCreationAppAssetCategory` 变体名 → kebab-case 线上值。 */
 function rustCategorySocketName(variant: string) {
   return variant.replace(/([a-z0-9])([A-Z])/g, '$1-$2').toLowerCase();
@@ -60,7 +83,9 @@ function rustCategorySocketName(variant: string) {
 
 /** 从 Rust 侧 `GAME_CREATION_APP_ASSET_CATEGORY_BY_KIND` 里解析出 kind → 栏目表。 */
 function rustAssetCategoryByKind(): Map<string, string> {
-  const source = readFileSync(RUST_CONTRACT_PATH, 'utf8');
+  const source = expandRustAssetKindConsts(
+    readFileSync(RUST_CONTRACT_PATH, 'utf8'),
+  );
   const start = source.indexOf(
     'pub const GAME_CREATION_APP_ASSET_CATEGORY_BY_KIND',
   );
@@ -120,10 +145,9 @@ const OBSERVED_ALIAS_INPUTS = [
 
 describe('资源 kind 别名表跨语言一致性', () => {
   test('两侧 canonical kind 目录一致', () => {
-    'font',
-      expect(rustCanonicalKinds()).toEqual([
-        ...GAME_CREATION_APP_CANONICAL_ASSET_KINDS,
-      ]);
+    expect(rustCanonicalKinds()).toEqual([
+      ...GAME_CREATION_APP_CANONICAL_ASSET_KINDS,
+    ]);
   });
 
   test('两侧别名映射逐条一致', () => {
@@ -311,9 +335,9 @@ describe('写侧 kind 字面量 → 分类的端到端口径', () => {
       'apps/ai-game-creator-shell/src-tauri/src/commands.rs',
       'utf8',
     );
-    // 字体上传的写入侧：`register_local_asset_entry(root, path, "font", …)`。
+    // 字体上传的写入侧直接传正式枚举成员：`register_local_asset_entry(root, path, GameCreationAppAssetKind::Font, …)`。
     expect(commandsSource).toMatch(
-      /register_local_asset_entry\(\s*\n\s*root,\s*\n\s*&relative_path,\s*\n\s*"font",/,
+      /register_local_asset_entry\(\s*\n\s*root,\s*\n\s*&relative_path,\s*\n\s*GameCreationAppAssetKind::Font,/,
     );
     expect(gameCreationAppAssetCategoryForKind('font')).toBe('document');
   });