Saved searches, notifications, and full theming

+New

• Saved searches: the current filter and search configuration on the Risks view can be named, stored and recalled later, scoped to each user.
• Customisable table columns: the Risks table supports per-user column selection that persists across sessions and devices.
• Real-time notifications: in-app notifications now stream live. The header bell updates its unread badge and dropdown without a page refresh, and a dedicated Notifications page lists the full history with read and unread management.
• Light and dark theme: full theming across the dashboard, with a light, dark or system preference saved per user and a theme toggle in the header.
• Release notes in-app: users are shown release notes they have not yet seen on login, and can browse the complete published history from a new Release Notes entry in the sidebar.
• First-run onboarding: new users get a short four-step guided tour the first time they sign in. It can be skipped and does not reappear across devices once completed.
• Data-retention administration: admins can configure how long historical data such as audit logs, device change events and notifications is kept, with last-run and last-deleted columns and on-demand pruning.
• Usage-metrics dashboard: a platform-level metrics view with KPI cards for users, devices, risks, clients and tickets, a time-series chart with 7, 30 and 90-day ranges, and on-demand snapshots.
• Risk activity timeline: each risk now shows a chronological stream of every event (creation, AI assessment, acceptance, resolution, merges, notes, linked tickets and audit entries), each rendered with its own icon and actor.