Ensure auth device token is saved to a file so it persists upgrades and reinstalls (#3640)

* ensure auth device token is saved to a file so it persists upgrades and reinstalls
#3639

* write file on check log in

* write file on check log in

* clean up

src/lib/constants.ts

@@ -60,6 +60,7 @@ export const TEST_SETTINGS_FILE_KEY = 'playwright-test-settings'
 
 export const DEFAULT_HOST = 'https://api.zoo.dev'
 export const SETTINGS_FILE_NAME = 'settings.toml'
+export const TOKEN_FILE_NAME = 'token.txt'
 export const PROJECT_SETTINGS_FILE_NAME = 'project.toml'
 export const COOKIE_NAME = '__Secure-next-auth.session-token'