refactor(ui): remove detail panel slide-in and inspect column from exchange table

Row click now navigates directly to the split view with diagram.
Removed: DetailPanel, inspect column, unused imports (ExternalLink,
ProcessorTimeline, RouteFlow, useExecutionDetail, useDiagramLayout,
buildFlowSegments).

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

ui/src/pages/Dashboard/Dashboard.tsx

@@ -1,12 +1,9 @@
 import { useState, useMemo, useCallback } from 'react'
 import { useParams, useNavigate, useSearchParams } from 'react-router'
-import { ExternalLink, AlertTriangle, X, Search } from 'lucide-react'
+import { AlertTriangle, X, Search } from 'lucide-react'
 import {
   DataTable,
-  DetailPanel,
   ShortcutsBar,
-  ProcessorTimeline,
-  RouteFlow,
   KpiStrip,
   StatusDot,
   MonoText,
@@ -18,11 +15,8 @@ import {
   useSearchExecutions,
   useExecutionStats,
   useStatsTimeseries,
-  useExecutionDetail,
 } from '../../api/queries/executions'
-import { useDiagramLayout } from '../../api/queries/diagrams'
 import type { ExecutionSummary } from '../../api/types'
-import { buildFlowSegments } from '../../utils/diagram-mapping'
 import styles from './Dashboard.module.css'
 
 // Row type extends ExecutionSummary with an `id` field for DataTable
@@ -199,7 +193,6 @@ export default function Dashboard() {
   const [searchParams, setSearchParams] = useSearchParams()
   const textFilter = searchParams.get('text') || undefined
   const [selectedId, setSelectedId] = useState<string | undefined>()
-  const [panelOpen, setPanelOpen] = useState(false)
   const [sortField, setSortField] = useState<string>('startTime')
   const [sortDir, setSortDir] = useState<'asc' | 'desc'>('desc')
 
@@ -236,8 +229,6 @@ export default function Dashboard() {
     },
     !textFilter,
   )
-  const { data: detail } = useExecutionDetail(selectedId ?? null)
-  const { data: diagram } = useDiagramLayout(detail?.diagramContentHash ?? null)
 
   // ─── Rows ────────────────────────────────────────────────────────────────
   const rows: Row[] = useMemo(
@@ -333,39 +324,15 @@ export default function Dashboard() {
     [totalCount, failedCount, successRate, throughput, exchangeTrend, successRateDelta, errorDelta, sparkExchanges, sparkErrors, sparkLatency, sparkThroughput, stats?.p99LatencyMs],
   )
 
-  // ─── Table columns with inspect action ───────────────────────────────────
+  // ─── Table columns ──────────────────────────────────────────────────────
-  const columns: Column<Row>[] = useMemo(() => {
+  const columns: Column<Row>[] = useMemo(() => buildBaseColumns(), [])
-    const inspectCol: Column<Row> = {
-      key: 'correlationId',
-      header: '',
-      width: '36px',
-      render: (_: unknown, row: Row) => (
-        <button
-          className={styles.inspectLink}
-          title="Inspect exchange"
-          onClick={(e) => {
-            e.stopPropagation()
-            navigate(`/exchanges/${row.applicationName}/${row.routeId}/${row.executionId}`)
-          }}
-        >
-          <ExternalLink size={14} />
-        </button>
-      ),
-    }
-    const base = buildBaseColumns()
-    const [statusCol, ...rest] = base
-    return [statusCol, inspectCol, ...rest]
-  }, [navigate])
 
-  // ─── Row click / detail panel ────────────────────────────────────────────
+  // ─── Row click → navigate to diagram view ────────────────────────────────
-  const selectedRow = useMemo(
-    () => rows.find((r) => r.id === selectedId),
-    [rows, selectedId],
-  )
 
   function handleRowClick(row: Row) {
     setSelectedId(row.id)
-    setPanelOpen(true)
+    // Navigate to the split view with diagram
+    navigate(`/exchanges/${row.applicationName}/${row.routeId}/${row.executionId}`)
   }
 
   function handleRowAccent(row: Row): 'error' | 'warning' | undefined {
@@ -373,24 +340,6 @@ export default function Dashboard() {
     return undefined
   }
 
-  // ─── Detail panel data ───────────────────────────────────────────────────
-  const procList = detail
-    ? (detail.processors ?? [])
-    : []
-
-  const routeFlows = useMemo(() => {
-    if (diagram?.nodes) {
-      return buildFlowSegments(diagram.nodes || [], procList).flows
-    }
-    return []
-  }, [diagram, procList])
-
-  const flatProcs = useMemo(() => flattenProcessors(procList), [procList])
-
-  // Error info from detail
-  const errorClass = detail?.errorMessage?.split(':')[0] ?? ''
-  const errorMsg = detail?.errorMessage ?? ''
-
   return (
     <>
       {/* Scrollable content */}
@@ -450,91 +399,6 @@ export default function Dashboard() {
 
       {/* Shortcuts bar */}
       <ShortcutsBar shortcuts={SHORTCUTS} />
-
-      {/* Detail panel — auto-portals to AppShell level via design system */}
-      {selectedRow && detail && (
-        <DetailPanel
-          open={panelOpen}
-          onClose={() => setPanelOpen(false)}
-          title={`${detail.routeId} \u2014 ${selectedRow.executionId.slice(0, 12)}`}
-        >
-            <div className={styles.panelSection}>
-              <button
-                className={styles.openDetailLink}
-                onClick={() => navigate(`/exchanges/${detail.applicationName}/${detail.routeId}/${detail.executionId}`)}
-              >
-                Open full details &#x2192;
-              </button>
-            </div>
-
-            <div className={styles.panelSection}>
-              <div className={styles.panelSectionTitle}>Overview</div>
-              <div className={styles.overviewGrid}>
-                <div className={styles.overviewRow}>
-                  <span className={styles.overviewLabel}>Status</span>
-                  <span className={styles.statusCell}>
-                    <StatusDot variant={statusToVariant(detail.status)} />
-                    <span>{statusLabel(detail.status)}</span>
-                  </span>
-                </div>
-                <div className={styles.overviewRow}>
-                  <span className={styles.overviewLabel}>Duration</span>
-                  <MonoText size="sm">{formatDuration(detail.durationMs)}</MonoText>
-                </div>
-                <div className={styles.overviewRow}>
-                  <span className={styles.overviewLabel}>Route</span>
-                  <span>{detail.routeId}</span>
-                </div>
-                <div className={styles.overviewRow}>
-                  <span className={styles.overviewLabel}>Agent</span>
-                  <MonoText size="sm">{detail.agentId ?? '\u2014'}</MonoText>
-                </div>
-                <div className={styles.overviewRow}>
-                  <span className={styles.overviewLabel}>Correlation</span>
-                  <MonoText size="xs">{detail.correlationId ?? '\u2014'}</MonoText>
-                </div>
-                <div className={styles.overviewRow}>
-                  <span className={styles.overviewLabel}>Timestamp</span>
-                  <MonoText size="xs">{detail.startTime ? new Date(detail.startTime).toISOString() : '\u2014'}</MonoText>
-                </div>
-              </div>
-            </div>
-
-            {errorMsg && (
-              <div className={styles.panelSection}>
-                <div className={styles.panelSectionTitle}>Errors</div>
-                <div className={styles.errorBlock}>
-                  <div className={styles.errorClass}>{errorClass}</div>
-                  <div className={styles.errorMessage}>{errorMsg}</div>
-                </div>
-              </div>
-            )}
-
-            <div className={styles.panelSection}>
-              <div className={styles.panelSectionTitle}>Route Flow</div>
-              {routeFlows.length > 0 ? (
-                <RouteFlow flows={routeFlows} />
-              ) : (
-                <div style={{ color: 'var(--text-muted)', fontSize: 12 }}>No diagram available</div>
-              )}
-            </div>
-
-            <div className={styles.panelSection}>
-              <div className={styles.panelSectionTitle}>
-                Processor Timeline
-                <span className={styles.panelSectionMeta}>{formatDuration(detail.durationMs)}</span>
-              </div>
-              {flatProcs.length > 0 ? (
-                <ProcessorTimeline
-                  processors={flatProcs}
-                  totalMs={detail.durationMs}
-                />
-              ) : (
-                <div style={{ color: 'var(--text-muted)', fontSize: 12 }}>No processor data</div>
-              )}
-            </div>
-          </DetailPanel>
-      )}
     </>
   )
 }