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+# Recharts Migration Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Replace the design system's hand-rolled SVG chart components with a single `ThemedChart` wrapper around Recharts, using Recharts-native data format.
+
+**Architecture:** Add Recharts as a DS dependency. Create `ThemedChart` component that renders `ResponsiveContainer` + `ComposedChart` with pre-themed grid/axes/tooltip. Consumers compose Recharts elements (`<Line>`, `<Area>`, `<Bar>`, `<ReferenceLine>`) as children. Delete old `LineChart/`, `AreaChart/`, `BarChart/`, `_chart-utils.ts`. Migrate the server UI's `AgentInstance.tsx` to the new API.
+
+**Tech Stack:** React 19, Recharts, CSS Modules, Vitest
+
+---
+
+## File Structure
+
+**Design System (`C:\Users\Hendrik\Documents\projects\design-system`):**
+
+| Action | Path | Purpose |
+|--------|------|---------|
+| Create | `src/design-system/composites/ThemedChart/ThemedChart.tsx` | Wrapper component: ResponsiveContainer + ComposedChart + themed axes/grid/tooltip |
+| Create | `src/design-system/composites/ThemedChart/ChartTooltip.tsx` | Custom tooltip with timestamp header + series values |
+| Create | `src/design-system/composites/ThemedChart/ChartTooltip.module.css` | Tooltip styles using DS tokens |
+| Create | `src/design-system/composites/ThemedChart/ThemedChart.test.tsx` | Render tests for ThemedChart |
+| Modify | `src/design-system/utils/rechartsTheme.ts` | Move `CHART_COLORS` definition here (was in `_chart-utils.ts`) |
+| Modify | `src/design-system/composites/index.ts` | Remove old chart exports, add ThemedChart + Recharts re-exports |
+| Modify | `COMPONENT_GUIDE.md` | Update charting strategy section |
+| Modify | `package.json` | Add `recharts` dependency, bump version |
+| Delete | `src/design-system/composites/LineChart/` | Old hand-rolled SVG line chart |
+| Delete | `src/design-system/composites/AreaChart/` | Old hand-rolled SVG area chart |
+| Delete | `src/design-system/composites/BarChart/` | Old hand-rolled SVG bar chart |
+| Delete | `src/design-system/composites/_chart-utils.ts` | Old chart utilities |
+
+**Server UI (`C:\Users\Hendrik\Documents\projects\cameleer3-server`):**
+
+| Action | Path | Purpose |
+|--------|------|---------|
+| Modify | `ui/src/pages/AgentInstance/AgentInstance.tsx` | Migrate 6 charts to ThemedChart + Recharts children |
+| Modify | `ui/package.json` | Update `@cameleer/design-system` to new version |
+
+---
+
+### Task 1: Add Recharts Dependency and Move CHART_COLORS
+
+**Files:**
+- Modify: `package.json`
+- Modify: `src/design-system/utils/rechartsTheme.ts`
+
+- [ ] **Step 1: Install recharts**
+
+```bash
+cd C:\Users\Hendrik\Documents\projects\design-system
+npm install recharts
+```
+
+- [ ] **Step 2: Move CHART_COLORS into rechartsTheme.ts**
+
+Replace the entire file `src/design-system/utils/rechartsTheme.ts` with:
+
+```tsx
+export const CHART_COLORS = [
+  'var(--chart-1)',
+  'var(--chart-2)',
+  'var(--chart-3)',
+  'var(--chart-4)',
+  'var(--chart-5)',
+  'var(--chart-6)',
+  'var(--chart-7)',
+  'var(--chart-8)',
+]
+
+/**
+ * Pre-configured Recharts prop objects that match the design system's
+ * chart styling. Used internally by ThemedChart and available for
+ * consumers composing Recharts directly.
+ */
+export const rechartsTheme = {
+  colors: CHART_COLORS,
+
+  cartesianGrid: {
+    stroke: 'var(--border-subtle)',
+    strokeDasharray: '3 3',
+    vertical: false,
+  },
+
+  xAxis: {
+    tick: { fontSize: 9, fontFamily: 'var(--font-mono)', fill: 'var(--text-faint)' },
+    axisLine: { stroke: 'var(--border-subtle)' },
+    tickLine: false as const,
+  },
+
+  yAxis: {
+    tick: { fontSize: 9, fontFamily: 'var(--font-mono)', fill: 'var(--text-faint)' },
+    axisLine: false as const,
+    tickLine: false as const,
+  },
+
+  tooltip: {
+    contentStyle: {
+      background: 'var(--bg-surface)',
+      border: '1px solid var(--border)',
+      borderRadius: 'var(--radius-sm)',
+      boxShadow: 'var(--shadow-md)',
+      fontSize: 11,
+      padding: '6px 10px',
+    },
+    labelStyle: {
+      color: 'var(--text-muted)',
+      fontSize: 11,
+      marginBottom: 4,
+    },
+    itemStyle: {
+      color: 'var(--text-primary)',
+      fontFamily: 'var(--font-mono)',
+      fontSize: 11,
+      padding: 0,
+    },
+    cursor: { stroke: 'var(--text-faint)' },
+  },
+
+  legend: {
+    wrapperStyle: {
+      fontSize: 11,
+      color: 'var(--text-secondary)',
+    },
+  },
+} as const
+```
+
+- [ ] **Step 3: Verify build compiles**
+
+```bash
+npm run build:lib
+```
+
+Expected: Build succeeds. The old chart components still import `CHART_COLORS` from `_chart-utils.ts` which still exists — they'll be deleted in Task 4.
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add package.json package-lock.json src/design-system/utils/rechartsTheme.ts
+git commit -m "chore: add recharts dependency, move CHART_COLORS to rechartsTheme"
+```
+
+---
+
+### Task 2: Create ChartTooltip Component
+
+**Files:**
+- Create: `src/design-system/composites/ThemedChart/ChartTooltip.tsx`
+- Create: `src/design-system/composites/ThemedChart/ChartTooltip.module.css`
+
+- [ ] **Step 1: Create tooltip CSS**
+
+Create `src/design-system/composites/ThemedChart/ChartTooltip.module.css`:
+
+```css
+.tooltip {
+  background: var(--bg-surface);
+  border: 1px solid var(--border);
+  border-radius: var(--radius-sm);
+  box-shadow: var(--shadow-md);
+  padding: 6px 10px;
+  font-size: 12px;
+}
+
+.time {
+  font-family: var(--font-mono);
+  font-size: 10px;
+  color: var(--text-muted);
+  margin-bottom: 4px;
+  padding-bottom: 3px;
+  border-bottom: 1px solid var(--border-subtle);
+}
+
+.row {
+  display: flex;
+  align-items: center;
+  gap: 5px;
+  margin-bottom: 2px;
+}
+
+.row:last-child {
+  margin-bottom: 0;
+}
+
+.dot {
+  width: 6px;
+  height: 6px;
+  border-radius: 50%;
+  flex-shrink: 0;
+}
+
+.label {
+  color: var(--text-muted);
+  font-size: 11px;
+}
+
+.value {
+  font-family: var(--font-mono);
+  font-weight: 600;
+  font-size: 11px;
+  color: var(--text-primary);
+}
+```
+
+- [ ] **Step 2: Create ChartTooltip component**
+
+Create `src/design-system/composites/ThemedChart/ChartTooltip.tsx`:
+
+```tsx
+import type { TooltipProps } from 'recharts'
+import styles from './ChartTooltip.module.css'
+
+function formatValue(val: number): string {
+  if (val >= 1_000_000) return `${(val / 1_000_000).toFixed(1)}M`
+  if (val >= 1000) return `${(val / 1000).toFixed(1)}k`
+  if (Number.isInteger(val)) return String(val)
+  return val.toFixed(1)
+}
+
+function formatTimestamp(val: unknown): string | null {
+  if (val == null) return null
+  const str = String(val)
+  const ms = typeof val === 'number' && val > 1e12 ? val
+    : typeof val === 'number' && val > 1e9 ? val * 1000
+    : Date.parse(str)
+  if (isNaN(ms)) return str
+  return new Date(ms).toLocaleString([], {
+    month: 'short', day: 'numeric',
+    hour: '2-digit', minute: '2-digit', second: '2-digit',
+  })
+}
+
+export function ChartTooltip({ active, payload, label }: TooltipProps<number, string>) {
+  if (!active || !payload?.length) return null
+
+  const timeLabel = formatTimestamp(label)
+
+  return (
+    <div className={styles.tooltip}>
+      {timeLabel && <div className={styles.time}>{timeLabel}</div>}
+      {payload.map((entry) => (
+        <div key={entry.dataKey as string} className={styles.row}>
+          <span className={styles.dot} style={{ background: entry.color }} />
+          <span className={styles.label}>{entry.name}:</span>
+          <span className={styles.value}>{formatValue(entry.value as number)}</span>
+        </div>
+      ))}
+    </div>
+  )
+}
+```
+
+- [ ] **Step 3: Commit**
+
+```bash
+git add src/design-system/composites/ThemedChart/
+git commit -m "feat: add ChartTooltip component for ThemedChart"
+```
+
+---
+
+### Task 3: Create ThemedChart Component
+
+**Files:**
+- Create: `src/design-system/composites/ThemedChart/ThemedChart.tsx`
+- Create: `src/design-system/composites/ThemedChart/ThemedChart.test.tsx`
+
+- [ ] **Step 1: Create ThemedChart component**
+
+Create `src/design-system/composites/ThemedChart/ThemedChart.tsx`:
+
+```tsx
+import {
+  ResponsiveContainer,
+  ComposedChart,
+  CartesianGrid,
+  XAxis,
+  YAxis,
+  Tooltip,
+} from 'recharts'
+import { rechartsTheme } from '../../utils/rechartsTheme'
+import { ChartTooltip } from './ChartTooltip'
+
+interface ThemedChartProps {
+  data: Record<string, any>[]
+  height?: number
+  xDataKey?: string
+  xType?: 'number' | 'category'
+  xTickFormatter?: (value: any) => string
+  yTickFormatter?: (value: any) => string
+  yLabel?: string
+  children: React.ReactNode
+  className?: string
+}
+
+export function ThemedChart({
+  data,
+  height = 200,
+  xDataKey = 'time',
+  xType = 'category',
+  xTickFormatter,
+  yTickFormatter,
+  yLabel,
+  children,
+  className,
+}: ThemedChartProps) {
+  if (!data.length) {
+    return null
+  }
+
+  return (
+    <div className={className} style={{ width: '100%', height }}>
+      <ResponsiveContainer width="100%" height="100%">
+        <ComposedChart data={data} margin={{ top: 4, right: 8, bottom: 0, left: 0 }}>
+          <CartesianGrid {...rechartsTheme.cartesianGrid} />
+          <XAxis
+            dataKey={xDataKey}
+            type={xType}
+            {...rechartsTheme.xAxis}
+            tickFormatter={xTickFormatter}
+          />
+          <YAxis
+            {...rechartsTheme.yAxis}
+            tickFormatter={yTickFormatter}
+            label={yLabel ? {
+              value: yLabel,
+              angle: -90,
+              position: 'insideLeft',
+              style: { fontSize: 11, fill: 'var(--text-muted)' },
+            } : undefined}
+          />
+          <Tooltip content={<ChartTooltip />} cursor={rechartsTheme.tooltip.cursor} />
+          {children}
+        </ComposedChart>
+      </ResponsiveContainer>
+    </div>
+  )
+}
+```
+
+- [ ] **Step 2: Write test**
+
+Create `src/design-system/composites/ThemedChart/ThemedChart.test.tsx`:
+
+```tsx
+import { describe, it, expect } from 'vitest'
+import { render, screen } from '@testing-library/react'
+import { ThemedChart } from './ThemedChart'
+import { Line } from 'recharts'
+
+// Recharts uses ResizeObserver internally
+class ResizeObserverMock {
+  observe() {}
+  unobserve() {}
+  disconnect() {}
+}
+globalThis.ResizeObserver = ResizeObserverMock as any
+
+describe('ThemedChart', () => {
+  it('renders nothing when data is empty', () => {
+    const { container } = render(
+      <ThemedChart data={[]}>
+        <Line dataKey="value" />
+      </ThemedChart>,
+    )
+    expect(container.innerHTML).toBe('')
+  })
+
+  it('renders a chart container when data is provided', () => {
+    const data = [
+      { time: '10:00', value: 10 },
+      { time: '10:01', value: 20 },
+    ]
+    const { container } = render(
+      <ThemedChart data={data} height={160}>
+        <Line dataKey="value" />
+      </ThemedChart>,
+    )
+    expect(container.querySelector('.recharts-responsive-container')).toBeTruthy()
+  })
+
+  it('applies custom className', () => {
+    const data = [{ time: '10:00', value: 5 }]
+    const { container } = render(
+      <ThemedChart data={data} className="my-chart">
+        <Line dataKey="value" />
+      </ThemedChart>,
+    )
+    expect(container.querySelector('.my-chart')).toBeTruthy()
+  })
+})
+```
+
+- [ ] **Step 3: Run tests**
+
+```bash
+npx vitest run src/design-system/composites/ThemedChart/ThemedChart.test.tsx
+```
+
+Expected: 3 tests pass.
+
+- [ ] **Step 4: Verify lib build**
+
+```bash
+npm run build:lib
+```
+
+Expected: Build succeeds.
+
+- [ ] **Step 5: Commit**
+
+```bash
+git add src/design-system/composites/ThemedChart/
+git commit -m "feat: add ThemedChart wrapper component"
+```
+
+---
+
+### Task 4: Update Barrel Exports and Delete Old Charts
+
+**Files:**
+- Modify: `src/design-system/composites/index.ts`
+- Delete: `src/design-system/composites/LineChart/`
+- Delete: `src/design-system/composites/AreaChart/`
+- Delete: `src/design-system/composites/BarChart/`
+- Delete: `src/design-system/composites/_chart-utils.ts`
+
+- [ ] **Step 1: Update composites/index.ts**
+
+Remove these lines:
+```
+export { AreaChart } from './AreaChart/AreaChart'
+export { BarChart } from './BarChart/BarChart'
+export { LineChart } from './LineChart/LineChart'
+export { CHART_COLORS } from './_chart-utils'
+export type { ChartSeries, DataPoint } from './_chart-utils'
+```
+
+Add in their place:
+```tsx
+// Charts — ThemedChart wrapper + Recharts re-exports
+export { ThemedChart } from './ThemedChart/ThemedChart'
+export { CHART_COLORS, rechartsTheme } from '../utils/rechartsTheme'
+export {
+  Line, Area, Bar,
+  ReferenceLine, ReferenceArea,
+  Legend, Brush,
+} from 'recharts'
+```
+
+- [ ] **Step 2: Remove the rechartsTheme re-export from main index.ts**
+
+In `src/design-system/index.ts`, remove this line (it's now re-exported via composites):
+```
+export * from './utils/rechartsTheme'
+```
+
+Replace with a targeted export that avoids double-exporting `CHART_COLORS`:
+```tsx
+export { rechartsTheme } from './utils/rechartsTheme'
+```
+
+Wait — actually `composites/index.ts` already re-exports both `CHART_COLORS` and `rechartsTheme`. And `index.ts` does `export * from './composites'`. So the main `index.ts` line `export * from './utils/rechartsTheme'` would cause a duplicate export of both symbols. Remove it entirely:
+
+Delete this line from `src/design-system/index.ts`:
+```
+export * from './utils/rechartsTheme'
+```
+
+- [ ] **Step 3: Delete old chart directories and utilities**
+
+```bash
+rm -rf src/design-system/composites/LineChart
+rm -rf src/design-system/composites/AreaChart
+rm -rf src/design-system/composites/BarChart
+rm src/design-system/composites/_chart-utils.ts
+```
+
+- [ ] **Step 4: Verify lib build**
+
+```bash
+npm run build:lib
+```
+
+Expected: Build succeeds. The old components are gone, ThemedChart and Recharts re-exports are the new public API.
+
+- [ ] **Step 5: Run all tests**
+
+```bash
+npx vitest run
+```
+
+Expected: All tests pass. No test files existed for the deleted components.
+
+- [ ] **Step 6: Commit**
+
+```bash
+git add -A
+git commit -m "feat!: replace custom chart components with ThemedChart + Recharts
+
+BREAKING: LineChart, AreaChart, BarChart, ChartSeries, DataPoint removed.
+Use ThemedChart with Recharts children (Line, Area, Bar, etc.) instead."
+```
+
+---
+
+### Task 5: Update COMPONENT_GUIDE.md
+
+**Files:**
+- Modify: `COMPONENT_GUIDE.md`
+
+- [ ] **Step 1: Update the charting strategy section**
+
+Find the section starting with `## Charting Strategy` (around line 183) and replace through line 228 with:
+
+```markdown
+## Charting Strategy
+
+The design system provides a **ThemedChart** wrapper component that applies consistent styling to Recharts charts. Recharts is bundled as a dependency — consumers do not need to install it separately.
+
+### Usage
+
+```tsx
+import { ThemedChart, Line, Area, ReferenceLine, CHART_COLORS } from '@cameleer/design-system'
+
+const data = metrics.map(m => ({ time: m.timestamp, cpu: m.value * 100 }))
+
+<ThemedChart data={data} height={160} xDataKey="time" yLabel="%">
+  <Area dataKey="cpu" stroke={CHART_COLORS[0]} fill={CHART_COLORS[0]} fillOpacity={0.1} />
+  <ReferenceLine y={85} stroke="var(--error)" strokeDasharray="5 3" label="Alert" />
+</ThemedChart>
+```
+
+### ThemedChart Props
+
+| Prop | Type | Default | Description |
+|------|------|---------|-------------|
+| `data` | `Record<string, any>[]` | required | Flat array of data objects |
+| `height` | `number` | `200` | Chart height in pixels |
+| `xDataKey` | `string` | `"time"` | Key for x-axis values |
+| `xType` | `'number' \| 'category'` | `"category"` | X-axis scale type |
+| `xTickFormatter` | `(value: any) => string` | — | Custom x-axis label formatter |
+| `yTickFormatter` | `(value: any) => string` | — | Custom y-axis label formatter |
+| `yLabel` | `string` | — | Y-axis label text |
+| `children` | `ReactNode` | required | Recharts elements (Line, Area, Bar, etc.) |
+| `className` | `string` | — | Container CSS class |
+
+### Available Recharts Re-exports
+
+`Line`, `Area`, `Bar`, `ReferenceLine`, `ReferenceArea`, `Legend`, `Brush`
+
+For chart types not covered (treemap, radar, pie, sankey), import from `recharts` directly and use `rechartsTheme` for consistent styling.
+
+### Theme Utilities
+
+| Export | Purpose |
+|--------|---------|
+| `CHART_COLORS` | Array of `var(--chart-1)` through `var(--chart-8)` |
+| `rechartsTheme` | Pre-configured prop objects for Recharts sub-components |
+```
+
+- [ ] **Step 2: Update the component index table**
+
+Find the rows for `AreaChart`, `BarChart`, `LineChart` in the component index table and replace all three with:
+
+```
+| ThemedChart | composite | Recharts wrapper with themed axes, grid, and tooltip |
+```
+
+- [ ] **Step 3: Update the decision tree**
+
+Find lines 57-60 (the chart decision tree entries):
+```
+- Time series → **LineChart**, **AreaChart**
+- Categorical comparison → **BarChart**
+```
+
+Replace with:
+```
+- Time series → **ThemedChart** with `<Line>` or `<Area>`
+- Categorical comparison → **ThemedChart** with `<Bar>`
+```
+
+- [ ] **Step 4: Commit**
+
+```bash
+git add COMPONENT_GUIDE.md
+git commit -m "docs: update COMPONENT_GUIDE for ThemedChart migration"
+```
+
+---
+
+### Task 6: Publish Design System
+
+**Files:**
+- Modify: `package.json` (version bump)
+
+- [ ] **Step 1: Bump version**
+
+In `package.json`, change `"version"` to `"0.1.47"`.
+
+- [ ] **Step 2: Build and verify**
+
+```bash
+npm run build:lib
+```
+
+- [ ] **Step 3: Commit and tag**
+
+```bash
+git add package.json
+git commit -m "chore: bump version to 0.1.47"
+git tag v0.1.47
+git push && git push --tags
+```
+
+- [ ] **Step 4: Wait for CI to publish**
+
+Wait for the Gitea CI pipeline to build and publish `@cameleer/design-system@0.1.47` to the npm registry. Verify with:
+
+```bash
+npm view @cameleer/design-system@0.1.47 version
+```
+
+---
+
+### Task 7: Migrate Server UI AgentInstance Charts
+
+**Files:**
+- Modify: `C:\Users\Hendrik\Documents\projects\cameleer3-server\ui\src\pages\AgentInstance\AgentInstance.tsx`
+- Modify: `C:\Users\Hendrik\Documents\projects\cameleer3-server\ui\package.json`
+
+- [ ] **Step 1: Update design system dependency**
+
+```bash
+cd C:\Users\Hendrik\Documents\projects\cameleer3-server\ui
+npm install @cameleer/design-system@0.1.47
+```
+
+- [ ] **Step 2: Update imports in AgentInstance.tsx**
+
+Replace the chart-related imports:
+
+Old:
+```tsx
+import {
+  StatCard, StatusDot, Badge, LineChart, AreaChart, BarChart,
+  EventFeed, Spinner, EmptyState, SectionHeader, MonoText,
+  LogViewer, ButtonGroup, useGlobalFilters,
+} from '@cameleer/design-system'
+```
+
+New:
+```tsx
+import {
+  StatCard, StatusDot, Badge,
+  ThemedChart, Line, Area, ReferenceLine, CHART_COLORS,
+  EventFeed, Spinner, EmptyState, SectionHeader, MonoText,
+  LogViewer, ButtonGroup, useGlobalFilters,
+} from '@cameleer/design-system'
+```
+
+- [ ] **Step 3: Replace data prep — JVM metrics**
+
+Replace the 4 JVM series useMemo blocks (cpuSeries, heapSeries, threadSeries, gcSeries) with flat data builders:
+
+```tsx
+  const formatTime = (t: string) =>
+    new Date(t).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' });
+
+  // JVM chart data — merge all metrics into flat objects by time bucket
+  const cpuData = useMemo(() => {
+    const pts = jvmMetrics?.metrics?.['process.cpu.usage.value'];
+    if (!pts?.length) return [];
+    return pts.map((p: any) => ({ time: p.time, cpu: p.value * 100 }));
+  }, [jvmMetrics]);
+
+  const heapData = useMemo(() => {
+    const pts = jvmMetrics?.metrics?.['jvm.memory.used.value'];
+    if (!pts?.length) return [];
+    return pts.map((p: any) => ({ time: p.time, heap: p.value / (1024 * 1024) }));
+  }, [jvmMetrics]);
+
+  const threadData = useMemo(() => {
+    const pts = jvmMetrics?.metrics?.['jvm.threads.live.value'];
+    if (!pts?.length) return [];
+    return pts.map((p: any) => ({ time: p.time, threads: p.value }));
+  }, [jvmMetrics]);
+
+  const gcData = useMemo(() => {
+    const pts = jvmMetrics?.metrics?.['jvm.gc.pause.total_time'];
+    if (!pts?.length) return [];
+    return pts.map((p: any) => ({ time: p.time, gc: p.value }));
+  }, [jvmMetrics]);
+```
+
+- [ ] **Step 4: Replace data prep — throughput and error**
+
+Replace the throughputSeries and errorSeries useMemo blocks:
+
+```tsx
+  const throughputData = useMemo(() => {
+    if (!chartData.length) return [];
+    return chartData.map((d: any) => ({ time: d.date.toISOString(), throughput: d.throughput }));
+  }, [chartData]);
+
+  const errorData = useMemo(() => {
+    if (!chartData.length) return [];
+    return chartData.map((d: any) => ({ time: d.date.toISOString(), errorPct: d.errorPct }));
+  }, [chartData]);
+```
+
+- [ ] **Step 5: Replace chart JSX — CPU Usage**
+
+Replace the CPU chart card content:
+
+```tsx
+          {cpuData.length ? (
+            <ThemedChart data={cpuData} height={160} xDataKey="time"
+              xTickFormatter={formatTime} yLabel="%">
+              <Area dataKey="cpu" name="CPU %" stroke={CHART_COLORS[0]}
+                fill={CHART_COLORS[0]} fillOpacity={0.1} strokeWidth={2} dot={false} />
+              <ReferenceLine y={85} stroke="var(--error)" strokeDasharray="5 3"
+                label={{ value: 'Alert', position: 'right', fill: 'var(--error)', fontSize: 9 }} />
+            </ThemedChart>
+          ) : (
+            <EmptyState title="No data" description="No CPU metrics available" />
+          )}
+```
+
+- [ ] **Step 6: Replace chart JSX — Memory (Heap)**
+
+Replace the heap chart card content:
+
+```tsx
+          {heapData.length ? (
+            <ThemedChart data={heapData} height={160} xDataKey="time"
+              xTickFormatter={formatTime} yLabel="MB">
+              <Area dataKey="heap" name="Heap MB" stroke={CHART_COLORS[0]}
+                fill={CHART_COLORS[0]} fillOpacity={0.1} strokeWidth={2} dot={false} />
+              {heapMax != null && (
+                <ReferenceLine y={heapMax / (1024 * 1024)} stroke="var(--error)" strokeDasharray="5 3"
+                  label={{ value: 'Max Heap', position: 'right', fill: 'var(--error)', fontSize: 9 }} />
+              )}
+            </ThemedChart>
+          ) : (
+            <EmptyState title="No data" description="No heap metrics available" />
+          )}
+```
+
+- [ ] **Step 7: Replace chart JSX — Throughput**
+
+```tsx
+          {throughputData.length ? (
+            <ThemedChart data={throughputData} height={160} xDataKey="time"
+              xTickFormatter={formatTime} yLabel="msg/s">
+              <Line dataKey="throughput" name="msg/s" stroke={CHART_COLORS[0]}
+                strokeWidth={2} dot={false} />
+            </ThemedChart>
+          ) : (
+            <EmptyState title="No data" description="No throughput data in range" />
+          )}
+```
+
+- [ ] **Step 8: Replace chart JSX — Error Rate**
+
+```tsx
+          {errorData.length ? (
+            <ThemedChart data={errorData} height={160} xDataKey="time"
+              xTickFormatter={formatTime} yLabel="%">
+              <Line dataKey="errorPct" name="Error %" stroke={CHART_COLORS[0]}
+                strokeWidth={2} dot={false} />
+            </ThemedChart>
+          ) : (
+            <EmptyState title="No data" description="No error data in range" />
+          )}
+```
+
+- [ ] **Step 9: Replace chart JSX — Thread Count**
+
+```tsx
+          {threadData.length ? (
+            <ThemedChart data={threadData} height={160} xDataKey="time"
+              xTickFormatter={formatTime} yLabel="threads">
+              <Line dataKey="threads" name="Threads" stroke={CHART_COLORS[0]}
+                strokeWidth={2} dot={false} />
+            </ThemedChart>
+          ) : (
+            <EmptyState title="No data" description="No thread metrics available" />
+          )}
+```
+
+- [ ] **Step 10: Replace chart JSX — GC Pauses**
+
+```tsx
+          {gcData.length ? (
+            <ThemedChart data={gcData} height={160} xDataKey="time"
+              xTickFormatter={formatTime} yLabel="ms">
+              <Area dataKey="gc" name="GC ms" stroke={CHART_COLORS[1]}
+                fill={CHART_COLORS[1]} fillOpacity={0.1} strokeWidth={2} dot={false} />
+            </ThemedChart>
+          ) : (
+            <EmptyState title="No data" description="No GC metrics available" />
+          )}
+```
+
+- [ ] **Step 11: Update the Thread Count meta display**
+
+The thread count meta currently reads from `threadSeries`. Update to read from `threadData`:
+
+Old:
+```tsx
+{threadSeries
+  ? `${threadSeries[0].data[threadSeries[0].data.length - 1]?.y.toFixed(0)} active`
+  : ''}
+```
+
+New:
+```tsx
+{threadData.length
+  ? `${threadData[threadData.length - 1].threads.toFixed(0)} active`
+  : ''}
+```
+
+- [ ] **Step 12: Build server UI**
+
+```bash
+cd C:\Users\Hendrik\Documents\projects\cameleer3-server\ui
+npm run build
+```
+
+Expected: Build succeeds.
+
+- [ ] **Step 13: Commit and push**
+
+```bash
+cd C:\Users\Hendrik\Documents\projects\cameleer3-server
+git add ui/
+git commit -m "feat: migrate agent charts to ThemedChart + Recharts
+
+Replace custom LineChart/AreaChart/BarChart usage with ThemedChart
+wrapper. Data format changed from ChartSeries[] to Recharts-native
+flat objects. Uses DS v0.1.47."
+git push
+```