feat: integrate ExecutionDiagram into ExchangeDetail flow view

Replace the RouteFlow-based flow view with the new ExecutionDiagram
component which provides execution overlay, iteration stepping, and
an integrated detail panel. The gantt view and all other page sections
remain unchanged.

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

ui/src/pages/ExchangeDetail/ExchangeDetail.module.css

@@ -265,6 +265,17 @@
   padding: 12px 16px;
 }
 
+/* ==========================================================================
+   EXECUTION DIAGRAM CONTAINER (Flow view)
+   ========================================================================== */
+.executionDiagramContainer {
+  height: 600px;
+  border: 1px solid var(--border, #E4DFD8);
+  border-radius: var(--radius-md, 8px);
+  overflow: hidden;
+  margin-bottom: 16px;
+}
+
 /* ==========================================================================
    DETAIL SPLIT (IN / OUT panels)
    ========================================================================== */

ui/src/pages/ExchangeDetail/ExchangeDetail.tsx

@@ -2,19 +2,21 @@ import { useState, useMemo, useCallback, useEffect } from 'react'
 import { useParams, useNavigate } from 'react-router'
 import {
   Badge, StatusDot, MonoText, CodeBlock, InfoCallout,
-  ProcessorTimeline, Spinner, RouteFlow, useToast,
+  ProcessorTimeline, Spinner, useToast,
   LogViewer, ButtonGroup, SectionHeader, useBreadcrumb,
   Modal, Tabs, Button, Select, Input, Textarea,
+  useGlobalFilters,
 } from '@cameleer/design-system'
-import type { ProcessorStep, RouteNode, NodeBadge, LogEntry, ButtonGroupItem } from '@cameleer/design-system'
+import type { ProcessorStep, NodeBadge, LogEntry, ButtonGroupItem } from '@cameleer/design-system'
 import { useExecutionDetail, useProcessorSnapshot } from '../../api/queries/executions'
 import { useCorrelationChain } from '../../api/queries/correlation'
-import { useDiagramLayout } from '../../api/queries/diagrams'
-import { buildFlowSegments, toFlowSegments } from '../../utils/diagram-mapping'
 import { useTracingStore } from '../../stores/tracing-store'
 import { useApplicationConfig, useUpdateApplicationConfig, useReplayExchange } from '../../api/queries/commands'
 import { useAgents } from '../../api/queries/agents'
 import { useApplicationLogs } from '../../api/queries/logs'
+import { useRouteCatalog } from '../../api/queries/catalog'
+import { ExecutionDiagram } from '../../components/ExecutionDiagram'
+import type { NodeAction, NodeConfig } from '../../components/ProcessDiagram/types'
 import styles from './ExchangeDetail.module.css'
 
 const LOG_LEVEL_ITEMS: ButtonGroupItem[] = [
@@ -88,7 +90,6 @@ export default function ExchangeDetail() {
 
   const { data: detail, isLoading } = useExecutionDetail(id ?? null)
   const { data: correlationData } = useCorrelationChain(detail?.correlationId ?? null)
-  const { data: diagram } = useDiagramLayout(detail?.diagramContentHash ?? null)
 
   const [timelineView, setTimelineView] = useState<'gantt' | 'flow'>('gantt')
   const [logSearch, setLogSearch] = useState('')
@@ -170,33 +171,6 @@ export default function ExchangeDetail() {
   const inputBody = snapshot?.inputBody ?? null
   const outputBody = snapshot?.outputBody ?? null
 
-  // Build RouteFlow nodes from diagram + execution data, split into flow segments
-  const { routeFlows, flowNodeIds } = useMemo(() => {
-    if (diagram?.nodes) {
-      const { flows, nodeIds } = buildFlowSegments(diagram.nodes, procList)
-      // Apply badges to each node across all flows
-      let idx = 0
-      const badgedFlows = flows.map(flow => ({
-        ...flow,
-        nodes: flow.nodes.map(node => ({
-          ...node,
-          badges: badgesFor(nodeIds[idx++]),
-        })),
-      }))
-      return { routeFlows: badgedFlows, flowNodeIds: nodeIds }
-    }
-    // Fallback: build from processor list (no diagram available)
-    const nodes = processors.map((p) => ({
-      name: p.name,
-      type: 'process' as RouteNode['type'],
-      durationMs: p.durationMs,
-      status: p.status,
-      badges: badgesFor(p.name),
-    }))
-    const { flows } = toFlowSegments(nodes)
-    return { routeFlows: flows, flowNodeIds: [] as string[] }
-  }, [diagram, processors, procList, tracedMap])
-
   // ProcessorId lookup: timeline index → processorId
   const processorIds: string[] = useMemo(() => {
     const ids: string[] = []
@@ -208,12 +182,6 @@ export default function ExchangeDetail() {
     return ids
   }, [procList])
 
-  // Map flow display index → processor tree index (for snapshot API)
-  // flowNodeIds already contains processor IDs in flow-order
-  const flowToTreeIndex = useMemo(() =>
-    flowNodeIds.map(pid => pid ? processorIds.indexOf(pid) : -1),
-    [flowNodeIds, processorIds],
-  )
 
   // ── Tracing toggle ──────────────────────────────────────────────────────
   const { toast } = useToast()
@@ -248,6 +216,36 @@ export default function ExchangeDetail() {
     })
   }, [detail, app, appConfig, tracingStore, updateConfig, toast])
 
+  // ── ExecutionDiagram support ──────────────────────────────────────────
+  const { timeRange } = useGlobalFilters()
+  const { data: catalog } = useRouteCatalog(
+    timeRange.start.toISOString(),
+    timeRange.end.toISOString(),
+  )
+
+  const knownRouteIds = useMemo(() => {
+    if (!catalog || !app) return new Set<string>()
+    const appEntry = (catalog as Array<{ appId: string; routes?: Array<{ routeId: string }> }>)
+      .find(a => a.appId === app)
+    return new Set((appEntry?.routes ?? []).map(r => r.routeId))
+  }, [catalog, app])
+
+  const nodeConfigs = useMemo(() => {
+    const map = new Map<string, NodeConfig>()
+    if (tracedMap) {
+      for (const pid of Object.keys(tracedMap)) {
+        map.set(pid, { traceEnabled: true })
+      }
+    }
+    return map
+  }, [tracedMap])
+
+  const handleNodeAction = useCallback((nodeId: string, action: NodeAction) => {
+    if (action === 'toggle-trace') {
+      handleToggleTracing(nodeId)
+    }
+  }, [handleToggleTracing])
+
   // ── Replay ─────────────────────────────────────────────────────────────
   const { data: liveAgents } = useAgents('LIVE', detail?.applicationName)
   const replay = useReplayExchange()
@@ -461,9 +459,9 @@ export default function ExchangeDetail() {
             </button>
           </div>
         </div>
-        <div className={styles.timelineBody}>
-          {timelineView === 'gantt' ? (
-            processors.length > 0 ? (
+        {timelineView === 'gantt' && (
+          <div className={styles.timelineBody}>
+            {processors.length > 0 ? (
               <ProcessorTimeline
                 processors={processors}
                 totalMs={detail.durationMs}
@@ -481,33 +479,23 @@ export default function ExchangeDetail() {
               />
             ) : (
               <InfoCallout>No processor data available</InfoCallout>
-            )
-          ) : (
-            routeFlows.length > 0 ? (
-              <RouteFlow
-                flows={routeFlows}
-                onNodeClick={(_node, index) => {
-                  const treeIdx = flowToTreeIndex[index]
-                  if (treeIdx >= 0) setSelectedProcessorIndex(treeIdx)
-                }}
-                selectedIndex={flowToTreeIndex.indexOf(activeIndex)}
-                getActions={(_node, index) => {
-                  const pid = flowNodeIds[index] ?? ''
-                  if (!pid || !detail?.applicationName) return []
-                  return [{
-                    label: tracingStore.isTraced(app, pid) ? 'Disable Tracing' : 'Enable Tracing',
-                    onClick: () => handleToggleTracing(pid),
-                    disabled: updateConfig.isPending,
-                  }]
-                }}
-              />
-            ) : (
-              <Spinner />
-            )
-          )}
-        </div>
+            )}
+          </div>
+        )}
       </div>
 
+      {timelineView === 'flow' && detail && (
+        <div className={styles.executionDiagramContainer}>
+          <ExecutionDiagram
+            executionId={id!}
+            executionDetail={detail}
+            knownRouteIds={knownRouteIds}
+            onNodeAction={handleNodeAction}
+            nodeConfigs={nodeConfigs}
+          />
+        </div>
+      )}
+
       {/* Exchange-level body (start/end of route) */}
       {detail && (detail.inputBody || detail.outputBody) && (
         <div className={styles.detailSplit}>