diff --git a/xuqm-bugcollect-service/src/main/java/com/xuqm/bugcollect/controller/LogController.java b/xuqm-bugcollect-service/src/main/java/com/xuqm/bugcollect/controller/LogController.java
index e3b1f38..f3077ec 100644
--- a/xuqm-bugcollect-service/src/main/java/com/xuqm/bugcollect/controller/LogController.java
+++ b/xuqm-bugcollect-service/src/main/java/com/xuqm/bugcollect/controller/LogController.java
@@ -209,6 +209,18 @@ public class LogController {
         return ApiResponse.success(sourcemapService.listByAppKey(appKey));
     }
 
+    @DeleteMapping("/sourcemaps/{id}")
+    public ApiResponse<Void> deleteSourcemap(@PathVariable Long id) {
+        sourcemapService.deleteById(id);
+        return ApiResponse.ok();
+    }
+
+    @PostMapping("/sourcemaps/prune-all")
+    public ApiResponse<String> pruneAllSourcemaps() {
+        int deleted = sourcemapService.pruneAll();
+        return ApiResponse.success("Pruned " + deleted + " records");
+    }
+
     // ── Webhooks ───────────────────────────────────────────────────────────────
 
     @GetMapping("/webhooks")
diff --git a/xuqm-bugcollect-service/src/main/java/com/xuqm/bugcollect/repository/LogSourcemapRepository.java b/xuqm-bugcollect-service/src/main/java/com/xuqm/bugcollect/repository/LogSourcemapRepository.java
index 348d35e..d2e0c7a 100644
--- a/xuqm-bugcollect-service/src/main/java/com/xuqm/bugcollect/repository/LogSourcemapRepository.java
+++ b/xuqm-bugcollect-service/src/main/java/com/xuqm/bugcollect/repository/LogSourcemapRepository.java
@@ -28,6 +28,8 @@ public interface LogSourcemapRepository extends JpaRepository<LogSourcemapEntity
     List<LogSourcemapEntity> findByAppKeyAndPlatformAndBundleNameOrderByUploadedAtDesc(
             String appKey, String platform, String bundleName);
 
+    List<LogSourcemapEntity> findByAppKeyOrderByUploadedAtDesc(String appKey);
+
     List<LogSourcemapEntity> findByAppKey(String appKey);
 
     void deleteByAppKey(String appKey);
diff --git a/xuqm-bugcollect-service/src/main/java/com/xuqm/bugcollect/service/SourcemapService.java b/xuqm-bugcollect-service/src/main/java/com/xuqm/bugcollect/service/SourcemapService.java
index 9eccfb4..66f3cb1 100644
--- a/xuqm-bugcollect-service/src/main/java/com/xuqm/bugcollect/service/SourcemapService.java
+++ b/xuqm-bugcollect-service/src/main/java/com/xuqm/bugcollect/service/SourcemapService.java
@@ -20,6 +20,7 @@ import java.util.ArrayList;
 import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Set;
+import java.util.stream.Collectors;
 
 @Service
 public class SourcemapService {
@@ -208,12 +209,46 @@ public class SourcemapService {
         }
     }
 
+    /** One-time / admin: apply the retention policy to all existing records. Returns deleted count. */
+    @Transactional
+    public int pruneAll() {
+        List<LogSourcemapEntity> all = sourcemapRepository.findAll();
+        long before = all.size();
+
+        record VersionKey(String appKey, String platform, String bundleName, String appVersion) {}
+        Set<VersionKey> versionKeys = all.stream()
+                .map(e -> new VersionKey(e.getAppKey(), e.getPlatform(), e.getBundleName(), e.getAppVersion()))
+                .collect(Collectors.toCollection(LinkedHashSet::new));
+
+        for (VersionKey key : versionKeys) {
+            pruneSourcemaps(key.appKey(), key.platform(), key.appVersion(), key.bundleName());
+        }
+
+        long after = sourcemapRepository.count();
+        int deleted = (int) (before - after);
+        log.info("pruneAll: scanned {} records, deleted {}", before, deleted);
+        return deleted;
+    }
+
     public String readSourceMapContent(String storageKey) throws IOException {
         return Files.readString(Paths.get(storageKey));
     }
 
+    @Transactional
+    public void deleteById(Long id) {
+        sourcemapRepository.findById(id).ifPresent(entity -> {
+            try {
+                Files.deleteIfExists(Paths.get(entity.getStorageKey()));
+            } catch (IOException e) {
+                log.warn("Could not delete sourcemap file {}: {}", entity.getStorageKey(), e.getMessage());
+            }
+            sourcemapRepository.delete(entity);
+            log.info("Sourcemap deleted: id={} storageKey={}", id, entity.getStorageKey());
+        });
+    }
+
     public List<SourcemapInfo> listByAppKey(String appKey) {
-        return sourcemapRepository.findByAppKey(appKey)
+        return sourcemapRepository.findByAppKeyOrderByUploadedAtDesc(appKey)
                 .stream()
                 .map(e -> new SourcemapInfo(
                         e.getId(), e.getAppKey(), e.getPlatform(),