Overview tab shows total images/tags/storage/pending/failed using
Fraunces for the big numbers. Inline alert nudges the operator to the
Import tab when pending tasks exist. Polls /api/system/stats every 5s
while the tab is visible (pauses when the document is hidden).
Import tab references three placeholders (TriggerPanel/FiltersForm/
TaskList); real implementations land in Task 15.
Router replaces the placeholder view for /settings with SettingsView.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
