widget states cached to SQLite, loaded on startup to seed DataProjection
so server restart preserves last-known data for reconnecting clients.
polling: first poll runs immediately, widget list cached per-task with
30s refresh, static text polled once inline instead of looping.
poll failures propagate WidgetError::SourceUnavailable to clients.
render engine prepends [offline] prefix in accent color, stale data
preserved below.
Gabriel Kaszewski
13497dd53c