add json_format option for structure logging

internal/engine/config/compositor.go

@@ -58,6 +58,7 @@ func (c *Compositor) LoadConf(path string) error {
 	v.SetDefault("updates.enabled", false)
 	v.SetDefault("updates.check_interval", "2h")
 	v.SetDefault("updates.wanted_version", "latest-stable")
+	v.SetDefault("log.json_format", "false")
 	v.SetDefault("log.level", "info")
 	v.SetDefault("log.output", "%stdout%")
 

internal/engine/config/config.go

@@ -55,6 +55,7 @@ type Updates struct {
 }
 
 type Log struct {
+	JSON    *bool   `mapstructure:"json_format"`
 	Level   *string `mapstructure:"level"`
 	OutPath any     `mapstructure:"output"`
 }