feat: write log on file

cmd/picoclaw/main.go

@@ -405,6 +405,9 @@ func agentCmd() {
 		os.Exit(1)
 	}
 
+	setupLogging(cfg)
+	defer logger.DisableFileLogging()
+
 	msgBus := bus.NewMessageBus()
 	agentLoop := agent.NewAgentLoop(cfg, msgBus, provider)
 
@@ -534,6 +537,9 @@ func gatewayCmd() {
 		os.Exit(1)
 	}
 
+	setupLogging(cfg)
+	defer logger.DisableFileLogging()
+
 	provider, err := providers.CreateProvider(cfg)
 	if err != nil {
 		fmt.Printf("Error creating provider: %v\n", err)
@@ -1425,3 +1431,29 @@ func skillsShowCmd(loader *skills.SkillsLoader, skillName string) {
 	fmt.Println("----------------------")
 	fmt.Println(content)
 }
+
+func setupLogging(cfg *config.Config) {
+	if strings.ToLower(cfg.Logging.Level) == "debug" {
+		logger.SetLevel(logger.DEBUG)
+	} else if strings.ToLower(cfg.Logging.Level) == "warn" {
+		logger.SetLevel(logger.WARN)
+	} else if strings.ToLower(cfg.Logging.Level) == "error" {
+		logger.SetLevel(logger.ERROR)
+	} else {
+		logger.SetLevel(logger.INFO)
+	}
+
+	if cfg.Logging.EnableFile && cfg.Logging.FilePath != "" {
+		logPath := cfg.Logging.FilePath
+		if strings.HasPrefix(logPath, "~") {
+			home, _ := os.UserHomeDir()
+			logPath = filepath.Join(home, logPath[1:])
+		}
+
+		os.MkdirAll(filepath.Dir(logPath), 0755)
+
+		if err := logger.EnableFileLogging(logPath); err != nil {
+			fmt.Printf("Warning: unable to create log file: %v\n", err)
+		}
+	}
+}

pkg/config/config.go

@@ -51,6 +51,7 @@ type Config struct {
 	Tools     ToolsConfig     `json:"tools"`
 	Heartbeat HeartbeatConfig `json:"heartbeat"`
 	Devices   DevicesConfig   `json:"devices"`
+	Logging   LoggingConfig   `json:"logging"`
 	mu        sync.RWMutex
 }
 
@@ -166,6 +167,12 @@ type DevicesConfig struct {
 	MonitorUSB bool `json:"monitor_usb" env:"PICOCLAW_DEVICES_MONITOR_USB"`
 }
 
+type LoggingConfig struct {
+	EnableFile bool   `json:"enable_file" env:"PICOCLAW_LOGGING_ENABLE_FILE"`
+	FilePath   string `json:"file_path" env:"PICOCLAW_LOGGING_FILE_PATH"`
+	Level      string `json:"level" env:"PICOCLAW_LOGGING_LEVEL"`
+}
+
 type ProvidersConfig struct {
 	Anthropic     ProviderConfig       `json:"anthropic"`
 	OpenAI        OpenAIProviderConfig `json:"openai"`
@@ -356,6 +363,11 @@ func DefaultConfig() *Config {
 			Enabled:    false,
 			MonitorUSB: true,
 		},
+		Logging: LoggingConfig{
+			EnableFile: false,
+			FilePath:   "~/.picoclaw/workspace/picoclaw_audit.log",
+			Level:      "info",
+		},
 	}
 }