feat: sidebar exchange counts respect selected time range

The /routes/catalog endpoint now accepts optional from/to query
parameters instead of hardcoding a 24h window. The UI passes the
global filter time range so sidebar counts match what the user sees.

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

cameleer3-server-app/src/main/java/com/cameleer3/server/app/controller/RouteCatalogController.java

@@ -14,6 +14,7 @@ import org.springframework.http.ResponseEntity;
 import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
 import java.sql.Timestamp;
@@ -44,7 +45,9 @@ public class RouteCatalogController {
     @Operation(summary = "Get route catalog",
             description = "Returns all applications with their routes, agents, and health status")
     @ApiResponse(responseCode = "200", description = "Catalog returned")
-    public ResponseEntity<List<AppCatalogEntry>> getCatalog() {
+    public ResponseEntity<List<AppCatalogEntry>> getCatalog(
+            @RequestParam(required = false) String from,
+            @RequestParam(required = false) String to) {
         List<AgentInfo> allAgents = registryService.findAll();
 
         // Group agents by application name
@@ -63,9 +66,10 @@ public class RouteCatalogController {
             routesByApp.put(entry.getKey(), routes);
         }
 
-        // Query route-level stats for the last 24 hours
+        // Time range for exchange counts — use provided range or default to last 24h
         Instant now = Instant.now();
-        Instant from24h = now.minus(24, ChronoUnit.HOURS);
+        Instant rangeFrom = from != null ? Instant.parse(from) : now.minus(24, ChronoUnit.HOURS);
+        Instant rangeTo = to != null ? Instant.parse(to) : now;
         Instant from1m = now.minus(1, ChronoUnit.MINUTES);
 
         // Route exchange counts from continuous aggregate
@@ -82,7 +86,7 @@ public class RouteCatalogController {
                         Timestamp ts = rs.getTimestamp("last_seen");
                         if (ts != null) routeLastSeen.put(key, ts.toInstant());
                     },
-                    Timestamp.from(from24h), Timestamp.from(now));
+                    Timestamp.from(rangeFrom), Timestamp.from(rangeTo));
         } catch (Exception e) {
             // Continuous aggregate may not exist yet
         }