Add log_promo_event for scan/attribution/register/order with IP; admin metrics APIs and ECharts on promo detail page.
Co-authored-by: Cursor <cursoragent@cursor.com>
Add client-logging SDK, expanded event taxonomy, API observability, admin domain events UI, and move SENTRY_DSN to HQ system settings with @sentry/node bootstrap after config preload.
Co-authored-by: Cursor <cursoragent@cursor.com>