First-run dialogs repeat when using Glimpse

When Plannotator opens in Glimpse, all first-run and announcement dialogs reappear on every launch.

Their completion flags are stored only in browser cookies, but Glimpse uses a temporary Chromium profile. That profile is deleted on exit, so the cookies (and settings) never survive between sessions.

Could Plannotator persist these flags in config.json so they survive Glimpse sessions?