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/custom_world.rs

@@ -37,7 +37,7 @@ use spacetime_client::{
     CustomWorldAgentOperationRecord, CustomWorldAgentSessionCreateRecordInput,
     CustomWorldAgentSessionRecord, CustomWorldDraftCardDetailRecord,
     CustomWorldDraftCardDetailSectionRecord, CustomWorldDraftCardRecord,
-    CustomWorldGalleryEntryRecord, CustomWorldLibraryEntryRecord,
+    CustomWorldLibraryEntryRecord,
     CustomWorldProfileLikeReportRecordInput, CustomWorldProfilePlayReportRecordInput,
     CustomWorldProfileRemixRecordInput, CustomWorldProfileUpsertRecordInput,
     CustomWorldPublishGateRecord, CustomWorldResultPreviewBlockerRecord,