修正图集切片读取侧枚举判断

恢复校验和测试筛选统一识别 Icon 资源 kind。

部分登记探测限定在图集切片路径，避免误判普通图标。

apps/ai-game-creator-shell/src-tauri/src/agent/generation/canvas_generation.rs

@@ -6852,7 +6852,7 @@ fn existing_platform_art_slice_registrations_are_complete(
             return Ok(false);
         };
         if candidates.next().is_some()
-            || asset.kind != "art-spritesheet-slice"
+            || asset.kind != GameCreationAppAssetKind::Icon
             || asset.media_type != "image/png"
             || asset.source.kind != GameCreationAppAssetSourceKind::Canvas
             || asset.source.generation_route.as_deref()
@@ -6941,10 +6941,12 @@ pub(in crate::agent) fn register_existing_platform_art_slices_at(
         .clone()
         .filter(|value| !value.trim().is_empty())
         .ok_or_else(|| "旧项目图集源资源缺少 sourceResourceId".to_string())?;
-    let has_partial_or_invalid_registration = manifest
-        .assets
-        .iter()
-        .any(|asset| asset.kind == "art-spritesheet-slice");
+    let has_partial_or_invalid_registration = manifest.assets.iter().any(|asset| {
+        asset.kind == GameCreationAppAssetKind::Icon
+            && asset
+                .local_path
+                .starts_with("assets/art-spritesheet-slices/")
+    });
 
     let receipt_path =
         resolve_local_project_path(root, ".agent/runtime/art-spritesheet-contract.json")?;
@@ -12053,7 +12055,7 @@ mod canvas_generation_tests {
         let first_slice_ids = registered
             .assets
             .iter()
-            .filter(|asset| asset.kind == "art-spritesheet-slice")
+            .filter(|asset| asset.kind == GameCreationAppAssetKind::Icon)
             .map(|asset| {
                 assert_eq!(asset.source.kind, GameCreationAppAssetSourceKind::Canvas);
                 assert_eq!(
@@ -12087,7 +12089,7 @@ mod canvas_generation_tests {
             .clone();
         mutate_manifest_at(root, |manifest| {
             manifest.assets.retain(|asset| {
-                asset.kind != "art-spritesheet-slice" || asset.local_path == retained_path
+                asset.kind != GameCreationAppAssetKind::Icon || asset.local_path == retained_path
             });
             Ok(())
         })
@@ -12101,7 +12103,7 @@ mod canvas_generation_tests {
         let backfilled_slice_ids = backfilled
             .assets
             .iter()
-            .filter(|asset| asset.kind == "art-spritesheet-slice")
+            .filter(|asset| asset.kind == GameCreationAppAssetKind::Icon)
             .map(|asset| (asset.local_path.clone(), asset.id.clone()))
             .collect::<std::collections::BTreeMap<_, _>>();
         assert_eq!(backfilled_slice_ids.len(), 4);
@@ -12150,7 +12152,7 @@ mod canvas_generation_tests {
         let replaced_slice_ids = replaced
             .assets
             .iter()
-            .filter(|asset| asset.kind == "art-spritesheet-slice")
+            .filter(|asset| asset.kind == GameCreationAppAssetKind::Icon)
             .map(|asset| {
                 assert_eq!(
                     asset.source.reference_resource_ids,
@@ -12244,7 +12246,7 @@ mod canvas_generation_tests {
         assert!(after
             .assets
             .iter()
-            .all(|asset| asset.kind != "art-spritesheet-slice"));
+            .all(|asset| asset.kind != GameCreationAppAssetKind::Icon));
 
         register_local_asset_entry(
             root,