清理后端编译警告

删除后端未使用的历史 helper、mapper、handler 和 re-export

将仅测试使用的导入、常量和辅助函数收口到 cfg(test)

补齐 Jump Hop 测试构造体字段并对齐 Match3D 当前素材表测试契约

验证后端 workspace cargo check 与 Match3D、Puzzle 相关测试

server-rs/crates/api-server/src/generated_image_assets.rs

@@ -6,15 +6,8 @@ pub mod helpers {
     pub use platform_image::generated_assets::helpers::*;
 }
 
-pub(crate) use adapter::{
-    GeneratedImageAssetAdapter, GeneratedImageAssetAdapterBoundary,
-    GeneratedImageAssetAdapterMetadata, GeneratedImageAssetPersistInput,
-    GeneratedImageAssetPreparedPut,
-};
+pub(crate) use adapter::GeneratedImageAssetAdapter;
 pub(crate) use helpers::{
-    GeneratedImageAssetDataUrl, GeneratedImageAssetHelperError, GeneratedImageAssetImageFormat,
-    GeneratedImageAssetMetadataInput, GeneratedImageAssetStoragePaths,
-    build_generated_image_asset_metadata, build_generated_image_asset_storage_paths,
-    decode_generated_image_asset_data_url, merge_generated_image_asset_metadata,
+    GeneratedImageAssetDataUrl, decode_generated_image_asset_data_url,
     normalize_generated_image_asset_mime,
 };