diff --git a/apps/ai-game-creator-shell/src-tauri/src/commands.rs b/apps/ai-game-creator-shell/src-tauri/src/commands.rs
index faf059c48..fb2e64306 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/commands.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/commands.rs
@@ -2887,7 +2887,7 @@ mod ui_editor_font_tests {
         symlink(fixture_font_path(), &target).expect("create font symlink");
         let entry = GameCreationAppAssetManifestEntry {
             id: "font-linked".to_string(),
-            kind: "font".to_string(),
+            kind: GameCreationAppAssetKind::Font,
             media_type: "font/ttf".to_string(),
             local_path: relative_path.to_string(),
             image_sequence_frames: None,
diff --git a/apps/ai-game-creator-shell/src-tauri/src/project/manifest/recovery_tests.rs b/apps/ai-game-creator-shell/src-tauri/src/project/manifest/recovery_tests.rs
index 43f967d42..6b1c7f12e 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/project/manifest/recovery_tests.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/project/manifest/recovery_tests.rs
@@ -180,7 +180,7 @@ fn successful_first_playable_registration_creates_one_initial_version_with_asset
     let mut manifest = new_game_creation_app_manifest("project-first-playable", "首板项目");
     manifest.assets.push(GameCreationAppAssetManifestEntry {
         id: "asset-player".to_string(),
-        kind: "character".to_string(),
+        kind: GameCreationAppAssetKind::Character,
         media_type: "image/png".to_string(),
         local_path: "assets/player.png".to_string(),
         image_sequence_frames: None,
diff --git a/apps/ai-game-creator-shell/src-tauri/src/project/resource_dependency_graph.rs b/apps/ai-game-creator-shell/src-tauri/src/project/resource_dependency_graph.rs
index 8d32d431a..5221396f2 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/project/resource_dependency_graph.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/project/resource_dependency_graph.rs
@@ -652,7 +652,7 @@ mod tests {
     ) -> GameCreationAppAssetManifestEntry {
         GameCreationAppAssetManifestEntry {
             id: id.to_string(),
-            kind: "test".to_string(),
+            kind: GameCreationAppAssetKind::Unknown,
             media_type: "image/png".to_string(),
             local_path: format!("assets/{id}.png"),
             image_sequence_frames: None,
diff --git a/apps/ai-game-creator-shell/src-tauri/src/project/resource_editor.rs b/apps/ai-game-creator-shell/src-tauri/src/project/resource_editor.rs
index d7a8a58a7..6a1df9f8d 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/project/resource_editor.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/project/resource_editor.rs
@@ -6623,7 +6623,7 @@ mod tests {
         first_request.source_asset_id = Some(source_asset.id.clone());
         first_request.source_path = Some(source_asset.local_path.clone());
         first_request.source_media_type = Some(source_asset.media_type.clone());
-        first_request.source_subtype = Some(source_asset.kind.clone());
+        first_request.source_subtype = Some(source_asset.kind.to_string());
         let mut second_request = first_request.clone();
         second_request.operation_id = Uuid::new_v4().to_string();
         second_request.idempotency_key = Uuid::new_v4().to_string();
@@ -6770,7 +6770,7 @@ mod tests {
         request.source_asset_id = Some(source_asset.id.clone());
         request.source_path = Some(source_asset.local_path.clone());
         request.source_media_type = Some(source_asset.media_type.clone());
-        request.source_subtype = Some(source_asset.kind.clone());
+        request.source_subtype = Some(source_asset.kind.to_string());
         let source = resolve_resource_edit_source(root, &manifest, &request)
             .expect("resolve character source");
         let mut ledger = ledger_for(&request, &source, ResourceEditLedgerPhase::Prepared);
@@ -6894,7 +6894,7 @@ mod tests {
         request.source_asset_id = Some(source_asset.id.clone());
         request.source_path = Some(source_asset.local_path.clone());
         request.source_media_type = Some(source_asset.media_type.clone());
-        request.source_subtype = Some(source_asset.kind.clone());
+        request.source_subtype = Some(source_asset.kind.to_string());
         let source =
             resolve_resource_edit_source(root, &manifest, &request).expect("resolve switch source");
         let mut ledger = ledger_for(&request, &source, ResourceEditLedgerPhase::Prepared);
@@ -7736,7 +7736,7 @@ mod tests {
         request.source_asset_id = Some(source_asset.id.clone());
         request.source_path = Some(source_asset.local_path.clone());
         request.source_media_type = Some(source_asset.media_type.clone());
-        request.source_subtype = Some(source_asset.kind.clone());
+        request.source_subtype = Some(source_asset.kind.to_string());
         let source = resolve_resource_edit_source(root, &manifest, &request)
             .expect("resolve unowned source");
         let prompt = normalize_resource_edit_prompt(&request.edit_kind, &request.prompt)
@@ -9269,7 +9269,7 @@ mod tests {
         request.source_asset_id = Some(source_asset.id.clone());
         request.source_path = Some(source_asset.local_path.clone());
         request.source_media_type = Some(source_asset.media_type.clone());
-        request.source_subtype = Some(source_asset.kind.clone());
+        request.source_subtype = Some(source_asset.kind.to_string());
         let source = resolve_resource_edit_source(
             root,
             &read_existing_manifest_for_project(root).expect("reread manifest"),
@@ -9330,7 +9330,7 @@ mod tests {
         request.source_asset_id = Some(source_asset.id.clone());
         request.source_path = Some(source_asset.local_path.clone());
         request.source_media_type = Some(source_asset.media_type.clone());
-        request.source_subtype = Some(source_asset.kind.clone());
+        request.source_subtype = Some(source_asset.kind.to_string());
         let source =
             resolve_resource_edit_source(root, &manifest, &request).expect("resolve commit source");
         let mut ledger = ledger_for(&request, &source, ResourceEditLedgerPhase::MediaDownloaded);