feat(user): use user language from store after logging in

src/modelTypes/IUserSettings.ts

@@ -3,6 +3,7 @@ import type {IAbstract} from './IAbstract'
 import type {IProject} from './IProject'
 import type {PrefixMode} from '@/modules/parseTaskText'
 import type {BasicColorSchema} from '@vueuse/core'
+import type {SupportedLocale} from '@/i18n'
 
 export interface IFrontendSettings {
 	playSoundWhenDone: boolean
@@ -20,6 +21,6 @@ export interface IUserSettings extends IAbstract {
 	defaultProjectId: undefined | IProject['id']
 	weekStart: 0 | 1 | 2 | 3 | 4 | 5 | 6
 	timezone: string
-	language: string
+	language: SupportedLocale
 	frontendSettings: IFrontendSettings
 }