fix: preserve runtime DB config for reposync subprocess

internal/constant/constant.go

@@ -149,6 +149,20 @@ const (
 // TablePrefix 表前缀，从配置文件读取
 var TablePrefix string
 
+// Runtime 数据库配置快照，用于需要单独启动内部子进程（如 reposync）时显式透传数据库连接信息，
+// 避免主进程启动阶段清理环境变量后，子进程意外回退到默认 sqlite 配置。
+var (
+	RuntimeDBType        string
+	RuntimeDBHost        string
+	RuntimeDBPort        int
+	RuntimeDBUser        string
+	RuntimeDBPassword    string
+	RuntimeDBName        string
+	RuntimeDBPath        string
+	RuntimeDBDSN         string
+	RuntimeDBTablePrefix string
+)
+
 // Secret JWT和密码salt密钥，运行中自动从数据库加载
 var Secret string
 

internal/services/config_service.go

@@ -125,6 +125,15 @@ func LoadConfig(path string) (*AppConfig, error) {
 
 	// 设置表前缀到 constant 包
 	constant.TablePrefix = Config.Database.TablePrefix
+	constant.RuntimeDBType = Config.Database.Type
+	constant.RuntimeDBHost = Config.Database.Host
+	constant.RuntimeDBPort = Config.Database.Port
+	constant.RuntimeDBUser = Config.Database.User
+	constant.RuntimeDBPassword = Config.Database.Password
+	constant.RuntimeDBName = Config.Database.DBName
+	constant.RuntimeDBPath = Config.Database.Path
+	constant.RuntimeDBDSN = Config.Database.DSN
+	constant.RuntimeDBTablePrefix = Config.Database.TablePrefix
 
 	// 暂存旧的 Secret，不再直接给 constant 赋值（改为到 settings 初始化时判断）
 	// constant.Secret = Config.Security.Secret

internal/services/tasks/executor_service.go

@@ -243,8 +243,6 @@ func (h *ServerSchedulerHandler) OnTaskCompleted(req *executor.ExecutionRequest,
 	// 处理任务完成（更新统计、清理旧日志等）
 	h.es.taskLogService.ProcessTaskCompletion(taskLog)
 
-
-
 	// 更新内存缓冲
 	h.es.UpdateResult(*result)
 
@@ -1083,7 +1081,35 @@ func buildRepoCommandEnvPrefix() string {
 	}
 
 	absScriptsDir := resolveAbsScriptsDir()
-	return "BH_CONFIG_PATH='" + strings.ReplaceAll(absConfig, "'", "'\\''") + "' BH_SCRIPTS_DIR='" + strings.ReplaceAll(absScriptsDir, "'", "'\\''") + "' "
+	parts := []string{
+		shellEnvAssignment("BH_CONFIG_PATH", absConfig),
+		shellEnvAssignment("BH_SCRIPTS_DIR", absScriptsDir),
+	}
+
+	appendIfSet := func(key string, value string) {
+		if strings.TrimSpace(value) == "" {
+			return
+		}
+		parts = append(parts, shellEnvAssignment(key, value))
+	}
+
+	appendIfSet("BH_DB_TYPE", constant.RuntimeDBType)
+	appendIfSet("BH_DB_HOST", constant.RuntimeDBHost)
+	if constant.RuntimeDBPort > 0 {
+		parts = append(parts, shellEnvAssignment("BH_DB_PORT", fmt.Sprintf("%d", constant.RuntimeDBPort)))
+	}
+	appendIfSet("BH_DB_USER", constant.RuntimeDBUser)
+	appendIfSet("BH_DB_PASSWORD", constant.RuntimeDBPassword)
+	appendIfSet("BH_DB_NAME", constant.RuntimeDBName)
+	appendIfSet("BH_DB_PATH", constant.RuntimeDBPath)
+	appendIfSet("BH_DB_DSN", constant.RuntimeDBDSN)
+	appendIfSet("BH_DB_TABLE_PREFIX", constant.RuntimeDBTablePrefix)
+
+	return strings.Join(parts, " ") + " "
+}
+
+func shellEnvAssignment(key, value string) string {
+	return key + "='" + strings.ReplaceAll(value, "'", "'\\''") + "'"
 }
 
 func resolveAbsScriptsDir() string {