Replace the analytics-style dashboard (stack-health funnel, uptime %,
operations/day grid, AI pill) with an attention-driven fleet cockpit:
- New /api/dashboard/fleet endpoint: server-side fan-out across the local
host and every agent into one payload — a prioritized "needs attention"
list, headline KPIs, an honest stack-status breakdown and a per-host
resource rollup. Each agent uses its own DB session so the fan-out is
concurrency-safe; failures degrade to "offline" instead of stalling.
- New frontend: AttentionStrip, FleetKpiRow, StackStatusBar and
HostResourceTable; Dashboard.tsx rewritten around them.
- Remove the funnel/summary endpoints, the uptime sampler loop and the
ops-activity machinery; delete the now-unused chart components.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
