refactor: make systemctl service name configurable via agent config

agent/agent.config.example.json

@@ -14,6 +14,7 @@
     "max_upload_mb": 200,
 
     "config_path": "/opt/safesight-edge-server/etc/media-server.json",
+    "systemctl_service": "safesight-edge-server",
     "media_server_process": {
       "enable": true,
       "exec_path": "/opt/safesight-edge-server/bin/systemctl-wrapper.sh",

agent/internal/config/config.go

@@ -30,6 +30,7 @@ type AgentConfig struct {
 	MediaServerBaseURL  string                   `json:"media_server_base_url"`
 	MediaServerTimeout  int                      `json:"media_server_timeout_ms"`
 	MediaServerRetry    RetryConfig              `json:"media_server_retry"`
+	SystemctlService    string                   `json:"systemctl_service"`
 }
 
 type MediaServerProcessConfig struct {
@@ -65,6 +66,7 @@ func Default() Config {
 			},
 			MediaServerBaseURL: "http://127.0.0.1:9000",
 			MediaServerTimeout: 3000,
+			SystemctlService:   "safesight-edge-server",
 			MediaServerRetry: RetryConfig{
 				MaxAttempts: 3,
 				BackoffMS:   []int{200, 500},

agent/internal/httpapi/server.go

@@ -88,7 +88,7 @@ func New(agentCfg config.AgentConfig, baseDir string, ms *mediaserver.Client, st
 		pc = procctl.New(agentCfg, baseDir)
 	} else {
 		// 使用 systemctl 模式管理 Media Server
-		pc = procctl.NewSystemCtlController("safesight-edge-server", strings.TrimSpace(agentCfg.ConfigPath))
+		pc = procctl.NewSystemCtlController(agentCfg.SystemctlService, agentCfg.ConfigPath)
 	}
 	execPath, _ := os.Executable()
 	if execPath != "" {