feat(gateway): add system.services and dashboard services grid

src/gateway/handlers/system.ts

@@ -1,6 +1,7 @@
 import type { GatewayRequest, OutboundMessage } from '../protocol.js';
 import { makeResponse, makeError, ErrorCode } from '../protocol.js';
 import type { MetricsSnapshot, EventEntry, ActiveRequestInfo } from '../metrics.js';
+import type { ServiceInfo } from './services.js';
 
 /** Per-session token usage report returned by system.tokenUsage. */
 export interface TokenUsageEntry {
@@ -28,6 +29,8 @@ export interface SystemHandlerDeps {
   getEvents?: (opts?: { level?: string; limit?: number }) => EventEntry[];
   /** Optional callback to retrieve active requests. */
   getActiveRequests?: () => ActiveRequestInfo[];
+  /** Optional callback to retrieve all services (channels + automation). */
+  getServices?: () => ServiceInfo[];
 }
 
 export function createSystemHandlers(deps: SystemHandlerDeps) {
@@ -68,6 +71,13 @@ export function createSystemHandlers(deps: SystemHandlerDeps) {
       return makeResponse(request.id, { channels: deps.getChannels() });
     },
 
+    'system.services': async (request: GatewayRequest): Promise<OutboundMessage> => {
+      if (!deps.getServices) {
+        return makeResponse(request.id, { services: [] });
+      }
+      return makeResponse(request.id, { services: deps.getServices() });
+    },
+
     'system.usage': async (request: GatewayRequest): Promise<OutboundMessage> => {
       const uptime = Math.floor((Date.now() - deps.startTime) / 1000);
       const usage = deps.getUsage?.() ?? { totalSessions: 0, activeConnections: 0 };