feat(#119): add RouteStateRegistry for tracking route operational state

In-memory registry that infers route state (started/stopped/suspended)
from successful route-control command ACKs. Updates state only when all
agents in a group confirm success.

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

cameleer3-server-app/src/main/java/com/cameleer3/server/app/config/AgentRegistryBeanConfig.java

@@ -3,11 +3,13 @@ package com.cameleer3.server.app.config;
 import com.cameleer3.server.core.agent.AgentEventRepository;
 import com.cameleer3.server.core.agent.AgentEventService;
 import com.cameleer3.server.core.agent.AgentRegistryService;
+import com.cameleer3.server.core.agent.RouteStateRegistry;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
 /**
- * Creates the {@link AgentRegistryService} and {@link AgentEventService} beans.
+ * Creates the {@link AgentRegistryService}, {@link AgentEventService},
+ * and {@link RouteStateRegistry} beans.
  * <p>
  * Follows the established pattern: core module plain class, app module bean config.
  */
@@ -27,4 +29,9 @@ public class AgentRegistryBeanConfig {
     public AgentEventService agentEventService(AgentEventRepository repository) {
         return new AgentEventService(repository);
     }
+
+    @Bean
+    public RouteStateRegistry routeStateRegistry() {
+        return new RouteStateRegistry();
+    }
 }

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

@@ -18,6 +18,7 @@ import com.cameleer3.server.core.agent.AgentRegistryService;
 import com.cameleer3.server.core.agent.AgentState;
 import com.cameleer3.server.core.agent.CommandReply;
 import com.cameleer3.server.core.agent.CommandType;
+import com.cameleer3.server.core.agent.RouteStateRegistry;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import jakarta.servlet.http.HttpServletRequest;
@@ -67,17 +68,20 @@ public class AgentCommandController {
     private final ObjectMapper objectMapper;
     private final AgentEventService agentEventService;
     private final AuditService auditService;
+    private final RouteStateRegistry routeStateRegistry;
 
     public AgentCommandController(AgentRegistryService registryService,
                                    SseConnectionManager connectionManager,
                                    ObjectMapper objectMapper,
                                    AgentEventService agentEventService,
-                                   AuditService auditService) {
+                                   AuditService auditService,
+                                   RouteStateRegistry routeStateRegistry) {
         this.registryService = registryService;
         this.connectionManager = connectionManager;
         this.objectMapper = objectMapper;
         this.agentEventService = agentEventService;
         this.auditService = auditService;
+        this.routeStateRegistry = routeStateRegistry;
     }
 
     @PostMapping("/{id}/commands")
@@ -157,6 +161,29 @@ public class AgentCommandController {
         boolean allSuccess = timedOut.isEmpty() &&
                 responses.stream().allMatch(r -> "SUCCESS".equals(r.status()));
 
+        // Update route state when all agents successfully ACK a route-control command
+        if (allSuccess && type == CommandType.ROUTE_CONTROL) {
+            try {
+                @SuppressWarnings("unchecked")
+                var payloadMap = objectMapper.readValue(payloadJson, java.util.Map.class);
+                String routeId = (String) payloadMap.get("routeId");
+                String action = (String) payloadMap.get("action");
+                if (routeId != null && action != null) {
+                    RouteStateRegistry.RouteState newState = switch (action) {
+                        case "start", "resume" -> RouteStateRegistry.RouteState.STARTED;
+                        case "stop" -> RouteStateRegistry.RouteState.STOPPED;
+                        case "suspend" -> RouteStateRegistry.RouteState.SUSPENDED;
+                        default -> null;
+                    };
+                    if (newState != null) {
+                        routeStateRegistry.setState(group, routeId, newState);
+                    }
+                }
+            } catch (Exception e) {
+                log.warn("Failed to parse route-control payload for state tracking", e);
+            }
+        }
+
         auditService.log("broadcast_group_command", AuditCategory.AGENT, group,
                 java.util.Map.of("type", request.type(), "agentCount", futures.size(),
                         "responded", responses.size(), "timedOut", timedOut.size()),

cameleer3-server-core/src/main/java/com/cameleer3/server/core/agent/RouteStateRegistry.java

@@ -0,0 +1,36 @@
+package com.cameleer3.server.core.agent;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * In-memory registry tracking the operational state of routes.
+ * State is inferred from successful route-control command ACKs.
+ * On server restart, all states reset to STARTED (default Camel behavior).
+ */
+public class RouteStateRegistry {
+
+    public enum RouteState { STARTED, STOPPED, SUSPENDED }
+
+    // Key: "applicationId:routeId"
+    private final ConcurrentHashMap<String, RouteState> states = new ConcurrentHashMap<>();
+
+    public void setState(String applicationId, String routeId, RouteState state) {
+        states.put(applicationId + ":" + routeId, state);
+    }
+
+    public RouteState getState(String applicationId, String routeId) {
+        return states.getOrDefault(applicationId + ":" + routeId, RouteState.STARTED);
+    }
+
+    public Map<String, RouteState> getStatesForApplication(String applicationId) {
+        Map<String, RouteState> result = new LinkedHashMap<>();
+        states.forEach((key, state) -> {
+            if (key.startsWith(applicationId + ":")) {
+                result.put(key.substring(applicationId.length() + 1), state);
+            }
+        });
+        return result;
+    }
+}