feat: AlignmentTrend component + trendlijn integratie in PlanQualityCard

LineChart met % ALIGNED per voltooide sprint, custom tooltip met absolute counts.
PlanQualityCard uitgebreid met AlignmentTrend onder de donut+tabellen.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/(app)/insights/components/alignment-trend.tsx

@@ -0,0 +1,73 @@
+'use client'
+
+import {
+  LineChart,
+  Line,
+  XAxis,
+  YAxis,
+  Tooltip,
+  ResponsiveContainer,
+} from 'recharts'
+import type { TrendPoint } from '@/lib/insights/verify-stats'
+
+interface Props {
+  trend: TrendPoint[]
+}
+
+interface TooltipPayload {
+  payload?: { total: number; alignedRatio: number; sprintGoal: string }
+}
+
+function CustomTooltip({ active, payload }: { active?: boolean; payload?: TooltipPayload[] }) {
+  if (!active || !payload?.length) return null
+  const d = payload[0].payload
+  if (!d) return null
+  const aligned = Math.round((d.alignedRatio / 100) * d.total)
+  return (
+    <div className="rounded border border-border bg-surface-container px-3 py-2 text-sm shadow">
+      <p className="font-medium text-foreground">{d.sprintGoal}</p>
+      <p className="text-muted-foreground">
+        {aligned} / {d.total} aligned ({d.alignedRatio}%)
+      </p>
+    </div>
+  )
+}
+
+function sprintLabel(goal: string): string {
+  return goal.length > 20 ? goal.slice(0, 18) + '…' : goal
+}
+
+export function AlignmentTrend({ trend }: Props) {
+  if (trend.length === 0) {
+    return (
+      <p className="text-muted-foreground text-sm">
+        Geen voltooide sprints met verify-data gevonden.
+      </p>
+    )
+  }
+
+  const data = trend.map(p => ({
+    ...p,
+    label: sprintLabel(p.sprintGoal),
+  }))
+
+  return (
+    <div className="space-y-2">
+      <p className="text-xs font-semibold text-muted-foreground uppercase tracking-wide">
+        % Aligned per sprint (laatste {trend.length})
+      </p>
+      <ResponsiveContainer width="100%" height={180}>
+        <LineChart data={data}>
+          <XAxis dataKey="label" tick={{ fontSize: 11 }} />
+          <YAxis domain={[0, 100]} tickFormatter={v => `${v}%`} tick={{ fontSize: 11 }} />
+          <Tooltip content={<CustomTooltip />} />
+          <Line
+            dataKey="alignedRatio"
+            stroke="var(--status-done)"
+            dot={{ fill: 'var(--status-done)' }}
+          />
+        </LineChart>
+      </ResponsiveContainer>
+    </div>
+  )
+}

app/(app)/insights/components/plan-quality.tsx

@@ -0,0 +1,112 @@
+'use client'
+
+import Link from 'next/link'
+import { PieChart, Pie, Cell, Tooltip, Legend, ResponsiveContainer } from 'recharts'
+import type { VerifyResultStats, VerifyResultKey, TopJob, TrendPoint } from '@/lib/insights/verify-stats'
+import { AlignmentTrend } from './alignment-trend'
+
+interface Props {
+  stats: VerifyResultStats
+  trend: TrendPoint[]
+  nowMs: number
+}
+
+const VERIFY_COLORS: Record<VerifyResultKey, string> = {
+  ALIGNED: 'var(--status-done)',
+  PARTIAL: 'var(--priority-medium)',
+  EMPTY: 'var(--priority-critical)',
+  DIVERGENT: 'var(--priority-high)',
+}
+
+const VERIFY_LABELS: Record<VerifyResultKey, string> = {
+  ALIGNED: 'Aligned',
+  PARTIAL: 'Partial',
+  EMPTY: 'Empty',
+  DIVERGENT: 'Divergent',
+}
+
+function daysAgo(date: Date, nowMs: number): string {
+  const diff = Math.floor((nowMs - new Date(date).getTime()) / 86_400_000)
+  return diff === 0 ? 'vandaag' : `${diff}d geleden`
+}
+
+function TopTable({ title, jobs, nowMs }: { title: string; jobs: TopJob[]; nowMs: number }) {
+  if (jobs.length === 0) return null
+  return (
+    <div className="space-y-1">
+      <p className="text-xs font-semibold text-muted-foreground uppercase tracking-wide">{title}</p>
+      <table className="w-full text-sm">
+        <tbody>
+          {jobs.map(j => (
+            <tr key={j.jobId} className="border-b border-border last:border-0">
+              <td className="py-1 pr-2">
+                <Link
+                  href={`/products/${j.productId}/solo?task=${j.taskId}`}
+                  className="text-primary underline line-clamp-1"
+                >
+                  {j.taskTitle}
+                </Link>
+              </td>
+              <td className="py-1 pr-2 text-muted-foreground whitespace-nowrap">{j.productName}</td>
+              <td className="py-1 text-muted-foreground whitespace-nowrap">{daysAgo(j.finishedAt, nowMs)}</td>
+            </tr>
+          ))}
+        </tbody>
+      </table>
+    </div>
+  )
+}
+
+export function PlanQualityCard({ stats, trend, nowMs }: Props) {
+  if (stats.counts.length === 0) {
+    return (
+      <div className="rounded-lg border border-border p-4 space-y-2">
+        <p className="text-sm text-muted-foreground">
+          Plan-verify gating moet eerst geactiveerd worden.{' '}
+          <Link
+            href="/products/cmohrysyj0000rd17clnjy4tc/backlog?story=cmomp6n670007bortkxslr3na"
+            className="underline text-primary"
+          >
+            Bekijk de Plan-verify gating story
+          </Link>
+        </p>
+      </div>
+    )
+  }
+
+  const labeled = stats.counts.map(c => ({
+    ...c,
+    name: VERIFY_LABELS[c.result],
+  }))
+
+  return (
+    <div className="space-y-6">
+      <div className="grid grid-cols-2 gap-4">
+        <ResponsiveContainer width="100%" height={240}>
+          <PieChart>
+            <Pie
+              data={labeled}
+              dataKey="count"
+              nameKey="name"
+              innerRadius={50}
+              outerRadius={80}
+            >
+              {labeled.map(entry => (
+                <Cell key={entry.result} fill={VERIFY_COLORS[entry.result]} />
+              ))}
+            </Pie>
+            <Tooltip />
+            <Legend />
+          </PieChart>
+        </ResponsiveContainer>
+
+        <div className="space-y-4 self-start">
+          <TopTable title="Top 5 Empty (verify_only kandidaten)" jobs={stats.topEmpty} nowMs={nowMs} />
+          <TopTable title="Top 5 Divergent (te vage plans)" jobs={stats.topDivergent} nowMs={nowMs} />
+        </div>
+      </div>
+
+      <AlignmentTrend trend={trend} />
+    </div>
+  )
+}