refactor: unify /apps routing with application and route filtering

- Table columns: Status, Route, Application, Started (yyyy-mm-dd hh:mm:ss),
  Duration, Agent (removed Order ID and Customer)
- /apps shows all exchanges, /apps/:id filters by application,
  /apps/:id/:routeId filters by application and route
- Route paths changed from /routes/:id to /apps/:appId/:routeId across
  sidebar, search, breadcrumbs, metrics, and exchange detail
- Added buildRouteToAppMap utility for route→application lookup

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

src/pages/Dashboard/Dashboard.module.css

@@ -69,14 +69,9 @@
   color: var(--text-primary);
 }
 
-.routeGroup {
-  font-size: 10px;
-  color: var(--text-muted);
-  font-family: var(--font-mono);
-}
-
-/* Customer text */
-.customerText {
+/* Application column */
+.appName {
+  font-size: 12px;
   color: var(--text-secondary);
 }