feat(settings): add settings management API endpoints

- Add GET /settings/get and POST /settings/set endpoints for managing system settings
- Implement config file persistence for settings changes
- Update config schema to include notification and webhook settings
- Add API documentation for new endpoints
- Move config path variables to global package for consistency

config/config.go

@@ -7,6 +7,7 @@ import (
 	"strconv"
 	"strings"
 	"super-frpc/global"
+	"super-frpc/postLog"
 
 	"github.com/BurntSushi/toml"
 )
@@ -94,6 +95,8 @@ func LoadConfig(configPath string, getInitSystem func() string) error {
 		return fmt.Errorf("failed to create config directory: %w", err)
 	}
 
+	postLog.Debug(fmt.Sprintf("Loaded config: %v", global.CurrentConfig))
+
 	return nil
 }
 
@@ -101,13 +104,13 @@ func GetConfig() *global.Config {
 	return &global.CurrentConfig
 }
 
-func SaveConfig(configPath string) error {
+func SaveConfig() error {
 	data, err := json.MarshalIndent(global.CurrentConfig, "", "  ")
 	if err != nil {
 		return fmt.Errorf("failed to marshal config: %w", err)
 	}
 
-	if err := os.WriteFile(configPath, data, 0644); err != nil {
+	if err := os.WriteFile(*global.ConfigPath, data, 0644); err != nil {
 		return fmt.Errorf("failed to write config file: %w", err)
 	}