The /insights page was rendering only Sprint Health (2 charts).
PRs #47/#48/#49 delivered helpers + tests for Velocity, Backlog health
and Agent throughput, but Velocity and Backlog never produced their
UI components, and none of the four new sections were wired into
page.tsx. Result: user sees 2 charts where 5 sections were promised.
This PR fills the gaps:
- New `app/(app)/insights/components/velocity-chart.tsx` — Recharts
grouped BarChart with optional ReferenceLine for the average. Empty
state when <2 completed sprints.
- New `app/(app)/insights/components/backlog-health.tsx` — counters
(stories sans AC / tasks sans plan / stuck>7d) + stuck-tasks table
with severity-coded days-stuck cell.
- `app/(app)/insights/page.tsx` rewritten as 5 sections:
Sprint Health, Plan-quality (donut + alignment-trend), Agent
throughput, Velocity, Backlog health. Helpers run in one
Promise.all so the page renders in a single tick.
Tests: 314/314 green, tsc clean, lint 0 errors.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>