unparam 死代码清理 12→2（保留 2 处 objectstore 构造函数统一签名）：移除 10 处恒 nil error / 从未使用的结果（getPoWConfigForRoute 的恒 nil *PoWConfig、getSQLiteOverview/getPostgresOverview/getStatus/loadKumaConfig/filterExpectedRoutes 的恒 nil error、rawJSONString/parsePositiveInt 的弃用 bool、buildProxyRoute 的弃用 []ZoneDomain、getLocked 的恒 nil error），同步简化 12+ 处调用方与死错误检查。9 个受影响包测试通过。metric 持平 8（改进在基准之外）。

Result: {"status":"keep","total_issues":8,"golint_canonicalheader":0,"golint_errname":0,"golint_errorlint":1,"golint_exhaustive":0,"golint_forcetypeassert":0,"golint_gosec":0,"golint_intrange":0,"golint_modernize":3,"golint_nilnil":3,"golint_perfsprint":0,"golint_prealloc":0,"golint_recvcheck":1,"golint_usestdlibvars":0,"golint_wastedassign":0,"golint_total":8,"golint_test_testifylint":0,"golint_test_thelper":0,"golint_test_usetesting":0,"golint_test_total":0,"golint_vetx_total":0,"eslint_problems":0,"eslint_errors":0,"eslint_warnings":0,"tsc_errors":0,"measure_s":43}

pkg/cap/store.go

@@ -52,20 +52,21 @@ func NewMemoryStore(cleanupInterval time.Duration) *MemoryStore {
 func (s *MemoryStore) Get(_ context.Context, key string) (string, bool, error) {
 	s.mu.Lock()
 	defer s.mu.Unlock()
-	return s.getLocked(key)
+	val, ok := s.getLocked(key)
+	return val, ok, nil
 }
 
 // getLocked is the internal helper – caller must hold s.mu.
-func (s *MemoryStore) getLocked(key string) (string, bool, error) {
+func (s *MemoryStore) getLocked(key string) (string, bool) {
 	item, found := s.items[key]
 	if !found {
-		return "", false, nil
+		return "", false
 	}
 	if time.Now().After(item.expiresAt) {
 		delete(s.items, key)
-		return "", false, nil
+		return "", false
 	}
-	return item.value, true, nil
+	return item.value, true
 }
 
 // Set 向 MemoryStore 写入指定 key 的值
@@ -93,7 +94,7 @@ func (s *MemoryStore) SetNX(_ context.Context, key string, val string, ttl time.
 	s.mu.Lock()
 	defer s.mu.Unlock()
 
-	_, exists, _ := s.getLocked(key)
+	_, exists := s.getLocked(key)
 	if exists {
 		return false, nil
 	}
@@ -109,9 +110,9 @@ func (s *MemoryStore) GetAndDelete(_ context.Context, key string) (string, bool,
 	s.mu.Lock()
 	defer s.mu.Unlock()
 
-	val, exists, err := s.getLocked(key)
-	if err != nil || !exists {
-		return "", false, err
+	val, exists := s.getLocked(key)
+	if !exists {
+		return "", false, nil
 	}
 	delete(s.items, key)
 	return val, true, nil