Method findExistingPreference

pkg/memory/preference.go:143–155

findExistingPreference 查找已存在的偏好

(
	userID string,
	category PreferenceCategory,
	key string,
)

// findExistingPreference 查找已存在的偏好
func (pm *PreferenceManager) findExistingPreference(
	userID string,
	category PreferenceCategory,
	key string,
) *Preference {
	prefs := pm.preferences[userID]
	for _, p := range prefs {
		if p.Category == category && p.Key == key {
			return p
		}
	}
	return nil
}

// handleConflict 处理偏好冲突
func (pm *PreferenceManager) handleConflict(existing, new *Preference) error {