- notifications.php: audit_log PK is audit_id not log_id; alias all
three queries with audit_id AS log_id to fix 500 error
- DashboardView: avg resolution time now picks best unit automatically
(min < 1h, hr < 48h, days < 14d, wks otherwise) with full hours
shown in title tooltip; adds lt-stat-unit CSS for the suffix
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>