refactor: unify "Executions" → "Exchanges" terminology

Rename all references from "Execution/executions/execCount" to
"Exchange/exchanges/exchangeCount" to align with Apache Camel's
native Exchange concept. Java class names (CamelExecutionException,
HttpOperationFailedException) are preserved as-is.

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

src/mocks/exchanges.ts

@@ -6,7 +6,7 @@ export interface ProcessorData {
   startMs: number
 }
 
-export interface Execution {
+export interface Exchange {
   id: string
   orderId: string
   customer: string
@@ -22,7 +22,7 @@ export interface Execution {
   processors: ProcessorData[]
 }
 
-export const executions: Execution[] = [
+export const exchanges: Exchange[] = [
   {
     id: 'E-2026-03-18-00201',
     orderId: 'OP-92184',

src/mocks/metrics.ts

@@ -44,7 +44,7 @@ function generateTimeSeries(
 // KPI stat cards data
 export const kpiMetrics: KpiMetric[] = [
   {
-    label: 'Executions (shift)',
+    label: 'Exchanges (shift)',
     value: '3,241',
     trend: 'up',
     trendValue: '+12%',
@@ -147,7 +147,7 @@ export const errorCountSeries: MetricSeries[] = [
 export interface RouteMetricRow {
   routeId: string
   routeName: string
-  execCount: number
+  exchangeCount: number
   successRate: number
   avgDurationMs: number
   p99DurationMs: number
@@ -159,7 +159,7 @@ export const routeMetrics: RouteMetricRow[] = [
   {
     routeId: 'order-intake',
     routeName: 'order-intake',
-    execCount: 892,
+    exchangeCount: 892,
     successRate: 99.2,
     avgDurationMs: 88,
     p99DurationMs: 142,
@@ -169,7 +169,7 @@ export const routeMetrics: RouteMetricRow[] = [
   {
     routeId: 'order-enrichment',
     routeName: 'order-enrichment',
-    execCount: 541,
+    exchangeCount: 541,
     successRate: 97.6,
     avgDurationMs: 156,
     p99DurationMs: 287,
@@ -179,7 +179,7 @@ export const routeMetrics: RouteMetricRow[] = [
   {
     routeId: 'payment-process',
     routeName: 'payment-process',
-    execCount: 414,
+    exchangeCount: 414,
     successRate: 96.1,
     avgDurationMs: 234,
     p99DurationMs: 412,
@@ -189,7 +189,7 @@ export const routeMetrics: RouteMetricRow[] = [
   {
     routeId: 'shipment-dispatch',
     routeName: 'shipment-dispatch',
-    execCount: 387,
+    exchangeCount: 387,
     successRate: 98.4,
     avgDurationMs: 118,
     p99DurationMs: 248,

src/mocks/routes.ts

@@ -3,7 +3,7 @@ export interface RouteDefinition {
   name: string
   group: string
   description: string
-  execCount: number
+  exchangeCount: number
   successRate: number
   avgDurationMs: number
   p99DurationMs: number
@@ -17,7 +17,7 @@ export const routes: RouteDefinition[] = [
     name: 'order-intake',
     group: 'order-flow',
     description: 'Ingests new orders from JMS queue, validates schema, enriches with customer data',
-    execCount: 892,
+    exchangeCount: 892,
     successRate: 99.2,
     avgDurationMs: 88,
     p99DurationMs: 142,
@@ -29,7 +29,7 @@ export const routes: RouteDefinition[] = [
     name: 'order-enrichment',
     group: 'order-flow',
     description: 'Enriches order with inventory availability, pricing, and shipment options',
-    execCount: 541,
+    exchangeCount: 541,
     successRate: 97.6,
     avgDurationMs: 156,
     p99DurationMs: 287,
@@ -41,7 +41,7 @@ export const routes: RouteDefinition[] = [
     name: 'payment-process',
     group: 'payment-flow',
     description: 'Processes payment through gateway, handles retries and partial failures',
-    execCount: 414,
+    exchangeCount: 414,
     successRate: 96.1,
     avgDurationMs: 234,
     p99DurationMs: 412,
@@ -53,7 +53,7 @@ export const routes: RouteDefinition[] = [
     name: 'payment-validate',
     group: 'payment-flow',
     description: 'Validates payment details and performs fraud check before processing',
-    execCount: 498,
+    exchangeCount: 498,
     successRate: 99.8,
     avgDurationMs: 142,
     p99DurationMs: 198,
@@ -65,7 +65,7 @@ export const routes: RouteDefinition[] = [
     name: 'shipment-dispatch',
     group: 'shipment-flow',
     description: 'Dispatches shipment to carrier after order confirmation',
-    execCount: 387,
+    exchangeCount: 387,
     successRate: 98.4,
     avgDurationMs: 118,
     p99DurationMs: 248,
@@ -77,7 +77,7 @@ export const routes: RouteDefinition[] = [
     name: 'shipment-track',
     group: 'shipment-flow',
     description: 'Polls carrier APIs for shipment status updates and notifies customers',
-    execCount: 923,
+    exchangeCount: 923,
     successRate: 99.5,
     avgDurationMs: 94,
     p99DurationMs: 167,
@@ -89,7 +89,7 @@ export const routes: RouteDefinition[] = [
     name: 'notification-dispatch',
     group: 'notification-flow',
     description: 'Sends email and SMS notifications to customers for order events',
-    execCount: 471,
+    exchangeCount: 471,
     successRate: 98.9,
     avgDurationMs: 62,
     p99DurationMs: 124,