refactor: implement MiniQueryServiceImpl

Phase 1, Step 1.4.2: Extract query logic from controller
- Placeholder implementation for getAthletes()
- Placeholder implementation for getScoreDetail()

Related to Phase 1 refactoring plan

src/main/java/org/springblade/modules/martial/service/impl/MiniQueryServiceImpl.java

@@ -0,0 +1,30 @@
+package org.springblade.modules.martial.service.impl;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springblade.core.tool.api.R;
+import org.springblade.modules.martial.pojo.vo.MiniAthleteScoreVO;
+import org.springblade.modules.martial.pojo.vo.MiniScoreDetailVO;
+import org.springblade.modules.martial.service.IMiniQueryService;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class MiniQueryServiceImpl implements IMiniQueryService {
+
+    @Override
+    public R<List<MiniAthleteScoreVO>> getAthletes(Long projectId, Long venueId) {
+        // TODO: Implement query logic from controller
+        return R.data(new ArrayList<>());
+    }
+
+    @Override
+    public R<MiniScoreDetailVO> getScoreDetail(Long athleteId) {
+        // TODO: Implement query logic from controller
+        return R.data(new MiniScoreDetailVO());
+    }
+}