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/puzzle_gallery_cache.rs

@@ -10,9 +10,11 @@ use shared_contracts::{
     puzzle_works::PuzzleWorkSummaryResponse,
 };
 use tokio::{
-    sync::{Mutex, MutexGuard, OwnedMutexGuard, RwLock},
+    sync::{Mutex, MutexGuard, RwLock},
     time,
 };
+#[cfg(test)]
+use tokio::sync::OwnedMutexGuard;
 
 use crate::{api_response::json_success_data_bytes_response, request_context::RequestContext};
 
@@ -69,6 +71,7 @@ impl PuzzleGalleryCache {
         })
     }
 
+    #[cfg(test)]
     pub async fn read_stale_response(&self) -> Option<PuzzleGalleryCachedResponse> {
         let guard = self.inner.read().await;
         let entry = guard.as_ref()?;
@@ -77,6 +80,7 @@ impl PuzzleGalleryCache {
         })
     }
 
+    #[cfg(test)]
     pub fn try_acquire_owned_rebuild_guard(&self) -> Option<OwnedMutexGuard<()>> {
         self.rebuild_lock.clone().try_lock_owned().ok()
     }