* feat(dashboard): replace 24h charts with Configuration Status and Recent Activity
The 24-hour CPU/Memory area charts summed per-container metrics normalized
to each container's CPU quota, producing numbers that bore no honest
relationship to host load. The live ResourceGauges strip already shows
accurate host-level stats, making the historical charts both inaccurate
and redundant.
This commit replaces that row with two side-by-side cards:
- **Configuration Status**: aggregates every toggleable feature on the
active node (notification agents, alert rules, routing rules, auto-heal,
auto-update, webhooks, scheduled tasks, MFA, SSO, vulnerability scanning,
cloud backup, and alert thresholds) into a single at-a-glance card.
Tier-locked rows display an upgrade indicator instead of a value.
Each row is clickable and navigates to the relevant settings section.
Data refreshes every 60 s and immediately on state-invalidate events.
- **Recent Activity**: lists the ten most recent notification-history events
for the active node (deployments, image updates, auto-heal actions, scan
findings, cloud backup events, system notices) with category icons and
relative timestamps. Refreshes every 30 s.
New backend endpoints:
- GET /api/dashboard/configuration - per-node feature status with locked/
requiredTier markers so the frontend renders upgrade chips without extra
calls. The endpoint sits after authGate and before the remote proxy so
remote-node requests are transparently forwarded.
- GET /api/dashboard/recent-activity?limit=N - thin wrapper over
DatabaseService.getNotificationHistory.
- GET /api/fleet/configuration - fleet-wide fan-out using the same
Promise.allSettled dead-node-tolerant pattern as /fleet/overview.
Exposed as the new "Status" tab on the Fleet page (after Snapshots).
Shared utilities:
- visibilityInterval and formatCount extracted to frontend/src/lib/utils.ts
so the three polling hooks and two components share a single copy.
* docs(dashboard): fix stale alt text referencing removed historical charts
Anso