feat: add AgentInstance detail page and improve AgentHealth

- New /agents/:appId/:instanceId page with process info, 3x2 charts
  grid (CPU, memory, throughput, errors, threads, GC), application
  log viewer with level filtering, and instance-scoped timeline
- AgentHealth now uses slide-in DetailPanel for quick instance preview
- Stat strip enhanced: colored StatusDot breakdowns, route ratio with
  state-colored values, Groups renamed to Applications
- Unified page structure: stat strip → scope trail with inline badges
  (removed duplicate section headers from both pages)
- StatCard value/detail props now accept ReactNode
- Log and timeline displayed side by side

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/App.tsx

@@ -5,6 +5,7 @@ import { Metrics } from './pages/Metrics/Metrics'
 import { RouteDetail } from './pages/RouteDetail/RouteDetail'
 import { ExchangeDetail } from './pages/ExchangeDetail/ExchangeDetail'
 import { AgentHealth } from './pages/AgentHealth/AgentHealth'
+import { AgentInstance } from './pages/AgentInstance/AgentInstance'
 import { Inventory } from './pages/Inventory/Inventory'
 import { AuditLog } from './pages/Admin/AuditLog/AuditLog'
 import { OidcConfig } from './pages/Admin/OidcConfig/OidcConfig'
@@ -85,6 +86,7 @@ export default function App() {
         <Route path="/metrics" element={<Metrics />} />
         <Route path="/routes/:id" element={<RouteDetail />} />
         <Route path="/exchanges/:id" element={<ExchangeDetail />} />
+        <Route path="/agents/:appId/:instanceId" element={<AgentInstance />} />
         <Route path="/agents/*" element={<AgentHealth />} />
         <Route path="/admin" element={<Navigate to="/admin/rbac" replace />} />
         <Route path="/admin/audit" element={<AuditLog />} />

src/pages/AgentHealth/AgentHealth.tsx

@@ -316,20 +316,15 @@ export function AgentHealth() {
           />
         </div>
 
-        {/* Scope breadcrumb trail */}
+        {/* Scope trail + badges */}
-        {scope.level !== 'all' && (
         <div className={styles.scopeTrail}>
+          {scope.level !== 'all' && (
+            <>
               <Link to="/agents" className={styles.scopeLink}>All Agents</Link>
               <span className={styles.scopeSep}>&#9656;</span>
               <span className={styles.scopeCurrent}>{scope.appId}</span>
-          </div>
+            </>
           )}
-
-        {/* Section header */}
-        <div className={styles.sectionHeaderRow}>
-          <span className={styles.sectionTitle}>
-            {scope.level === 'all' ? 'Agents' : scope.appId}
-          </span>
           <Badge
             label={`${liveCount}/${totalInstances} live`}
             color={deadCount > 0 ? 'error' : staleCount > 0 ? 'warning' : 'success'}

src/pages/AgentInstance/AgentInstance.module.css

@@ -0,0 +1,229 @@
+.content {
+  flex: 1;
+  overflow-y: auto;
+  padding: 20px 24px 40px;
+  min-width: 0;
+  background: var(--bg-body);
+}
+
+.notFound {
+  padding: 60px;
+  text-align: center;
+  color: var(--text-faint);
+  font-size: 14px;
+}
+
+/* Stat strip — 5 columns matching /agents */
+.statStrip {
+  display: grid;
+  grid-template-columns: repeat(5, 1fr);
+  gap: 10px;
+  margin-bottom: 16px;
+}
+
+/* Scope trail — matches /agents */
+.scopeTrail {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  margin-bottom: 12px;
+  font-size: 12px;
+}
+
+.scopeLink {
+  color: var(--amber);
+  text-decoration: none;
+  font-weight: 500;
+}
+
+.scopeLink:hover {
+  text-decoration: underline;
+}
+
+.scopeSep {
+  color: var(--text-muted);
+  font-size: 10px;
+}
+
+.scopeCurrent {
+  color: var(--text-primary);
+  font-weight: 600;
+  font-family: var(--font-mono);
+}
+
+/* Section header — matches /agents */
+.sectionHeaderRow {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  margin-bottom: 12px;
+}
+
+.sectionTitle {
+  font-size: 13px;
+  font-weight: 600;
+  color: var(--text-primary);
+}
+
+/* Charts 3x2 grid */
+.chartsGrid {
+  display: grid;
+  grid-template-columns: 1fr 1fr 1fr;
+  gap: 14px;
+  margin-bottom: 20px;
+}
+
+.chartCard {
+  background: var(--bg-surface);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-lg);
+  box-shadow: var(--shadow-card);
+  padding: 16px;
+  overflow: hidden;
+}
+
+.chartHeader {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 12px;
+}
+
+.chartTitle {
+  font-size: 13px;
+  font-weight: 600;
+  color: var(--text-primary);
+}
+
+.chartMeta {
+  font-size: 11px;
+  color: var(--text-muted);
+  font-family: var(--font-mono);
+}
+
+/* Process info card */
+.processCard {
+  background: var(--bg-surface);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-lg);
+  box-shadow: var(--shadow-card);
+  padding: 16px;
+  margin-bottom: 20px;
+}
+
+.processGrid {
+  display: grid;
+  grid-template-columns: auto 1fr auto 1fr;
+  gap: 6px 16px;
+  font-size: 12px;
+  font-family: var(--font-body);
+  margin-top: 12px;
+}
+
+.processLabel {
+  color: var(--text-muted);
+  font-weight: 500;
+}
+
+.fdRow {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+
+/* Log + Timeline side by side */
+.bottomRow {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 14px;
+}
+
+/* Log viewer */
+.logCard {
+  background: var(--bg-surface);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-lg);
+  box-shadow: var(--shadow-card);
+  overflow: hidden;
+}
+
+.logHeader {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 12px 16px;
+  border-bottom: 1px solid var(--border-subtle);
+}
+
+.logEntries {
+  max-height: 360px;
+  overflow-y: auto;
+  font-size: 11px;
+}
+
+.logEntry {
+  display: flex;
+  align-items: flex-start;
+  gap: 8px;
+  padding: 5px 16px;
+  border-bottom: 1px solid var(--border-subtle);
+  font-family: var(--font-mono);
+  transition: background 0.1s;
+}
+
+.logEntry:hover {
+  background: var(--bg-hover);
+}
+
+.logEntry:last-child {
+  border-bottom: none;
+}
+
+.logTime {
+  flex-shrink: 0;
+  color: var(--text-muted);
+  min-width: 60px;
+}
+
+.logLogger {
+  flex-shrink: 0;
+  color: var(--text-faint);
+  max-width: 220px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.logMsg {
+  color: var(--text-primary);
+  font-family: var(--font-mono);
+  font-size: 11px;
+  word-break: break-word;
+}
+
+.logEmpty {
+  padding: 24px;
+  text-align: center;
+  color: var(--text-faint);
+  font-size: 12px;
+}
+
+/* Timeline card */
+.timelineCard {
+  background: var(--bg-surface);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-lg);
+  box-shadow: var(--shadow-card);
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+  max-height: 420px;
+}
+
+.timelineHeader {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 12px 16px;
+  border-bottom: 1px solid var(--border-subtle);
+}

src/pages/AgentInstance/AgentInstance.tsx

@@ -0,0 +1,326 @@
+import { useMemo } from 'react'
+import { useParams, Link } from 'react-router-dom'
+import styles from './AgentInstance.module.css'
+
+// Layout
+import { AppShell } from '../../design-system/layout/AppShell/AppShell'
+import { Sidebar } from '../../design-system/layout/Sidebar/Sidebar'
+import { TopBar } from '../../design-system/layout/TopBar/TopBar'
+
+// Composites
+import { LineChart } from '../../design-system/composites/LineChart/LineChart'
+import { AreaChart } from '../../design-system/composites/AreaChart/AreaChart'
+import { EventFeed } from '../../design-system/composites/EventFeed/EventFeed'
+import { Tabs } from '../../design-system/composites/Tabs/Tabs'
+
+// Primitives
+import { StatusDot } from '../../design-system/primitives/StatusDot/StatusDot'
+import { MonoText } from '../../design-system/primitives/MonoText/MonoText'
+import { Badge } from '../../design-system/primitives/Badge/Badge'
+import { StatCard } from '../../design-system/primitives/StatCard/StatCard'
+import { ProgressBar } from '../../design-system/primitives/ProgressBar/ProgressBar'
+import { SectionHeader } from '../../design-system/primitives/SectionHeader/SectionHeader'
+import { Card } from '../../design-system/primitives/Card/Card'
+import { CodeBlock } from '../../design-system/primitives/CodeBlock/CodeBlock'
+
+// Global filters
+import { useGlobalFilters } from '../../design-system/providers/GlobalFilterProvider'
+
+// Data
+import { agents } from '../../mocks/agents'
+import { SIDEBAR_APPS } from '../../mocks/sidebar'
+import { agentEvents } from '../../mocks/agentEvents'
+
+import { useState } from 'react'
+
+// ── Mock trend data ──────────────────────────────────────────────────────────
+
+function buildTimeSeries(baseValue: number, variance: number, points = 30) {
+  const now = Date.now()
+  const interval = (6 * 60 * 60 * 1000) / points
+  return Array.from({ length: points }, (_, i) => ({
+    x: new Date(now - (points - i) * interval),
+    y: Math.max(0, baseValue + (Math.random() - 0.5) * variance * 2),
+  }))
+}
+
+function buildMemoryHistory(currentPct: number) {
+  return [
+    { label: 'Heap Used', data: buildTimeSeries(currentPct * 0.7, 10) },
+    { label: 'Heap Total', data: buildTimeSeries(currentPct * 0.9, 5) },
+  ]
+}
+
+// ── Mock log entries ─────────────────────────────────────────────────────────
+
+function buildLogEntries(agentName: string) {
+  const now = Date.now()
+  const MIN = 60_000
+  return [
+    { ts: new Date(now - 1 * MIN).toISOString(), level: 'INFO', logger: 'o.a.c.impl.DefaultCamelContext', msg: `Route order-validation started and consuming from: direct:validate` },
+    { ts: new Date(now - 2 * MIN).toISOString(), level: 'INFO', logger: 'o.a.c.impl.DefaultCamelContext', msg: `Total 3 routes, of which 3 are started` },
+    { ts: new Date(now - 5 * MIN).toISOString(), level: 'WARN', logger: 'o.a.c.processor.errorhandler', msg: `Failed delivery for exchangeId: ID-${agentName}-1710847200000-0-1. Exhausted after 3 attempts.` },
+    { ts: new Date(now - 8 * MIN).toISOString(), level: 'INFO', logger: 'o.a.c.health.HealthCheckHelper', msg: `Health check [routes] is UP` },
+    { ts: new Date(now - 12 * MIN).toISOString(), level: 'INFO', logger: 'o.a.c.health.HealthCheckHelper', msg: `Health check [consumers] is UP` },
+    { ts: new Date(now - 15 * MIN).toISOString(), level: 'DEBUG', logger: 'o.a.c.component.kafka', msg: `KafkaConsumer[order-events] poll returned 42 records in 18ms` },
+    { ts: new Date(now - 18 * MIN).toISOString(), level: 'INFO', logger: 'o.a.c.impl.engine.InternalRouteStartup', msg: `Route order-enrichment started and consuming from: kafka:order-events` },
+    { ts: new Date(now - 25 * MIN).toISOString(), level: 'WARN', logger: 'o.a.c.component.http', msg: `HTTP endpoint https://payment-api.internal/verify returned 503 — will retry` },
+    { ts: new Date(now - 30 * MIN).toISOString(), level: 'INFO', logger: 'o.a.c.impl.DefaultCamelContext', msg: `Apache Camel ${agentName} (CamelContext) is starting` },
+    { ts: new Date(now - 32 * MIN).toISOString(), level: 'INFO', logger: 'org.springframework.boot', msg: `Started ${agentName} in 4.231 seconds (process running for 4.892)` },
+  ]
+}
+
+function formatLogTime(iso: string): string {
+  return new Date(iso).toLocaleTimeString('en-GB', { hour: '2-digit', minute: '2-digit', second: '2-digit', hour12: false })
+}
+
+// ── Mock JVM / process info ──────────────────────────────────────────────────
+
+function buildProcessInfo(agent: typeof agents[0]) {
+  return {
+    jvmVersion: 'OpenJDK 21.0.2+13',
+    camelVersion: '4.4.0',
+    springBootVersion: '3.2.4',
+    pid: Math.floor(1000 + Math.random() * 90000),
+    startTime: new Date(Date.now() - parseDuration(agent.uptime)).toISOString(),
+    heapMax: '512 MB',
+    heapUsed: `${Math.round(512 * agent.memoryUsagePct / 100)} MB`,
+    nonHeapUsed: `${Math.round(80 + Math.random() * 40)} MB`,
+    threadCount: Math.floor(20 + Math.random() * 30),
+    peakThreads: Math.floor(45 + Math.random() * 20),
+    gcCollections: Math.floor(Math.random() * 500),
+    gcPauseTotal: `${(Math.random() * 2).toFixed(2)}s`,
+    classesLoaded: Math.floor(8000 + Math.random() * 4000),
+    openFileDescriptors: Math.floor(50 + Math.random() * 200),
+    maxFileDescriptors: 65536,
+  }
+}
+
+function parseDuration(s: string): number {
+  let ms = 0
+  const dMatch = s.match(/(\d+)d/)
+  const hMatch = s.match(/(\d+)h/)
+  const mMatch = s.match(/(\d+)m/)
+  if (dMatch) ms += parseInt(dMatch[1]) * 86400000
+  if (hMatch) ms += parseInt(hMatch[1]) * 3600000
+  if (mMatch) ms += parseInt(mMatch[1]) * 60000
+  return ms || 60000
+}
+
+// ── Component ────────────────────────────────────────────────────────────────
+
+const LOG_TABS = [
+  { label: 'All', value: 'all' },
+  { label: 'Warnings', value: 'warn' },
+  { label: 'Errors', value: 'error' },
+]
+
+export function AgentInstance() {
+  const { appId, instanceId } = useParams<{ appId: string; instanceId: string }>()
+  const { isInTimeRange } = useGlobalFilters()
+  const [logFilter, setLogFilter] = useState('all')
+
+  const agent = agents.find((a) => a.appId === appId && a.id === instanceId)
+
+  const instanceEvents = useMemo(() => {
+    if (!agent) return []
+    return agentEvents
+      .filter((e) => e.searchText?.toLowerCase().includes(agent.name.toLowerCase()))
+      .filter((e) => isInTimeRange(e.timestamp))
+  }, [agent, isInTimeRange])
+
+  if (!agent) {
+    return (
+      <AppShell sidebar={<Sidebar apps={SIDEBAR_APPS} />}>
+        <TopBar breadcrumb={[{ label: 'Agents', href: '/agents' }, { label: 'Not Found' }]} environment="PRODUCTION" user={{ name: 'hendrik' }} />
+        <div className={styles.content}>
+          <div className={styles.notFound}>Agent instance not found.</div>
+        </div>
+      </AppShell>
+    )
+  }
+
+  const processInfo = buildProcessInfo(agent)
+  const logEntries = buildLogEntries(agent.name)
+  const filteredLogs = logFilter === 'all'
+    ? logEntries
+    : logEntries.filter((l) => l.level === logFilter.toUpperCase())
+
+  const cpuData = buildTimeSeries(agent.cpuUsagePct, 15)
+  const memSeries = buildMemoryHistory(agent.memoryUsagePct)
+  const tpsSeries = [{ label: 'Throughput', data: buildTimeSeries(agent.tps, 5) }]
+  const errorSeries = [{ label: 'Errors', data: buildTimeSeries(agent.errorRate ? parseFloat(agent.errorRate) : 0.2, 2), color: 'var(--error)' }]
+  const threadSeries = [{ label: 'Threads', data: buildTimeSeries(processInfo.threadCount, 8) }]
+  const gcSeries = [{ label: 'GC Pause', data: buildTimeSeries(4, 6) }]
+
+  const statusVariant = agent.status === 'live' ? 'live' : agent.status === 'stale' ? 'stale' : 'dead'
+  const statusColor = agent.status === 'live' ? 'success' : agent.status === 'stale' ? 'warning' : 'error'
+
+  return (
+    <AppShell sidebar={<Sidebar apps={SIDEBAR_APPS} />}>
+      <TopBar
+        breadcrumb={[
+          { label: 'Applications', href: '/apps' },
+          { label: 'Agents', href: '/agents' },
+          { label: appId!, href: `/agents/${appId}` },
+          { label: instanceId! },
+        ]}
+        environment="PRODUCTION"
+        user={{ name: 'hendrik' }}
+      />
+
+      <div className={styles.content}>
+        {/* Stat strip — 5 columns matching /agents */}
+        <div className={styles.statStrip}>
+          <StatCard label="CPU" value={`${agent.cpuUsagePct}%`} accent={agent.cpuUsagePct > 85 ? 'error' : agent.cpuUsagePct > 70 ? 'warning' : 'success'} />
+          <StatCard label="Memory" value={`${agent.memoryUsagePct}%`} accent={agent.memoryUsagePct > 85 ? 'error' : agent.memoryUsagePct > 70 ? 'warning' : 'success'} detail={`${processInfo.heapUsed} / ${processInfo.heapMax}`} />
+          <StatCard label="Throughput" value={`${agent.tps.toFixed(1)}/s`} accent="amber" detail="msg/s" />
+          <StatCard label="Errors" value={agent.errorRate ?? '0 err/h'} accent={agent.errorRate ? 'error' : 'success'} />
+          <StatCard label="Uptime" value={agent.uptime || '—'} accent="running" detail={`since ${new Date(processInfo.startTime).toLocaleDateString()}`} />
+        </div>
+
+        {/* Scope trail + badges */}
+        <div className={styles.scopeTrail}>
+          <Link to="/agents" className={styles.scopeLink}>All Agents</Link>
+          <span className={styles.scopeSep}>&#9656;</span>
+          <Link to={`/agents/${appId}`} className={styles.scopeLink}>{appId}</Link>
+          <span className={styles.scopeSep}>&#9656;</span>
+          <span className={styles.scopeCurrent}>{agent.name}</span>
+          <Badge label={agent.status.toUpperCase()} color={statusColor} />
+          <Badge label={agent.version} color="auto" variant="outlined" />
+          <Badge label={`${agent.activeRoutes}/${agent.totalRoutes} routes`} color={agent.activeRoutes < agent.totalRoutes ? 'warning' : 'success'} />
+        </div>
+
+        {/* Process info card — right below stat strip */}
+        <div className={styles.processCard}>
+          <SectionHeader>Process Information</SectionHeader>
+          <div className={styles.processGrid}>
+            <span className={styles.processLabel}>JVM</span>
+            <MonoText size="xs">{processInfo.jvmVersion}</MonoText>
+
+            <span className={styles.processLabel}>Camel</span>
+            <MonoText size="xs">{processInfo.camelVersion}</MonoText>
+
+            <span className={styles.processLabel}>Spring Boot</span>
+            <MonoText size="xs">{processInfo.springBootVersion}</MonoText>
+
+            <span className={styles.processLabel}>Started</span>
+            <MonoText size="xs">{new Date(processInfo.startTime).toLocaleString()}</MonoText>
+
+            <span className={styles.processLabel}>File Descriptors</span>
+            <MonoText size="xs">{processInfo.openFileDescriptors} / {processInfo.maxFileDescriptors.toLocaleString()}</MonoText>
+          </div>
+        </div>
+
+        {/* Charts grid — 3x2 (CPU, Memory, Throughput, Errors, Threads, GC) */}
+        <div className={styles.chartsGrid}>
+          <div className={styles.chartCard}>
+            <div className={styles.chartHeader}>
+              <span className={styles.chartTitle}>CPU Usage</span>
+              <span className={styles.chartMeta}>{agent.cpuUsagePct}% current</span>
+            </div>
+            <AreaChart
+              series={[{ label: 'CPU %', data: cpuData }]}
+              height={160}
+              yLabel="%"
+              thresholdValue={85}
+              thresholdLabel="Alert"
+            />
+          </div>
+
+          <div className={styles.chartCard}>
+            <div className={styles.chartHeader}>
+              <span className={styles.chartTitle}>Memory (Heap)</span>
+              <span className={styles.chartMeta}>{processInfo.heapUsed} / {processInfo.heapMax}</span>
+            </div>
+            <AreaChart
+              series={memSeries}
+              height={160}
+              yLabel="MB"
+            />
+          </div>
+
+          <div className={styles.chartCard}>
+            <div className={styles.chartHeader}>
+              <span className={styles.chartTitle}>Throughput</span>
+              <span className={styles.chartMeta}>{agent.tps.toFixed(1)} msg/s</span>
+            </div>
+            <LineChart
+              series={tpsSeries}
+              height={160}
+              yLabel="msg/s"
+            />
+          </div>
+
+          <div className={styles.chartCard}>
+            <div className={styles.chartHeader}>
+              <span className={styles.chartTitle}>Error Rate</span>
+              <span className={styles.chartMeta}>{agent.errorRate ?? '0 err/h'}</span>
+            </div>
+            <LineChart
+              series={errorSeries}
+              height={160}
+              yLabel="err/h"
+            />
+          </div>
+
+          <div className={styles.chartCard}>
+            <div className={styles.chartHeader}>
+              <span className={styles.chartTitle}>Thread Count</span>
+              <span className={styles.chartMeta}>{processInfo.threadCount} active</span>
+            </div>
+            <LineChart series={threadSeries} height={160} yLabel="threads" />
+          </div>
+
+          <div className={styles.chartCard}>
+            <div className={styles.chartHeader}>
+              <span className={styles.chartTitle}>GC Pauses</span>
+              <span className={styles.chartMeta}>{processInfo.gcPauseTotal} total</span>
+            </div>
+            <LineChart series={gcSeries} height={160} yLabel="ms" />
+          </div>
+        </div>
+
+        {/* Log + Timeline side by side */}
+        <div className={styles.bottomRow}>
+          {/* Log viewer */}
+          <div className={styles.logCard}>
+            <div className={styles.logHeader}>
+              <SectionHeader>Application Log</SectionHeader>
+              <Tabs tabs={LOG_TABS} active={logFilter} onChange={setLogFilter} />
+            </div>
+            <div className={styles.logEntries}>
+              {filteredLogs.map((entry, i) => (
+                <div key={i} className={styles.logEntry}>
+                  <MonoText size="xs" className={styles.logTime}>{formatLogTime(entry.ts)}</MonoText>
+                  <Badge
+                    label={entry.level}
+                    color={entry.level === 'WARN' ? 'warning' : entry.level === 'ERROR' ? 'error' : entry.level === 'DEBUG' ? 'auto' : 'success'}
+                  />
+                  <MonoText size="xs" className={styles.logLogger}>{entry.logger}</MonoText>
+                  <span className={styles.logMsg}>{entry.msg}</span>
+                </div>
+              ))}
+              {filteredLogs.length === 0 && (
+                <div className={styles.logEmpty}>No log entries match the selected filter.</div>
+              )}
+            </div>
+          </div>
+
+          {/* Timeline */}
+          <div className={styles.timelineCard}>
+            <div className={styles.timelineHeader}>
+              <span className={styles.chartTitle}>Timeline</span>
+              <span className={styles.chartMeta}>{instanceEvents.length} events</span>
+            </div>
+            {instanceEvents.length > 0 ? (
+              <EventFeed events={instanceEvents} />
+            ) : (
+              <div className={styles.logEmpty}>No events in the selected time range.</div>
+            )}
+          </div>
+        </div>
+      </div>
+    </AppShell>
+  )
+}