feat: add agentmon services section to infrastructure page

Label all agentmon docker-compose services with agentmon.monitor=true
and agentmon.group=agentmon so the swarm-monitor picks them up.
Adds Group field to ServiceSnapshot, probes /healthz for api/web roles,
and renders a separate "Agentmon" section below Swarm Services on the
Infrastructure page with new api and worker card renderers.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker-compose.yaml

@@ -15,6 +15,10 @@ services:
       interval: 5s
       timeout: 5s
       retries: 5
+    labels:
+      agentmon.monitor: "true"
+      agentmon.group: agentmon
+      agentmon.role: db
 
   nats:
     image: nats:latest
@@ -24,6 +28,10 @@ services:
     command: "--jetstream"
     volumes:
       - nats-data:/data
+    labels:
+      agentmon.monitor: "true"
+      agentmon.group: agentmon
+      agentmon.role: queue
 
   ingest-gateway:
     build: .
@@ -38,6 +46,11 @@ services:
       AGENTMON_ADDR: :8080
       NATS_URL: nats://nats:4222
       NATS_TOPIC: agentmon.events.v1
+    labels:
+      agentmon.monitor: "true"
+      agentmon.group: agentmon
+      agentmon.role: api
+      agentmon.port: "8080"
 
   query-api:
     build: .
@@ -56,6 +69,11 @@ services:
       AGENTMON_QUERY_BASE: http://localhost:8081
       NATS_URL: nats://nats:4222
       NATS_TOPIC: agentmon.events.v1
+    labels:
+      agentmon.monitor: "true"
+      agentmon.group: agentmon
+      agentmon.role: api
+      agentmon.port: "8081"
 
   web-ui:
     build: .
@@ -69,6 +87,11 @@ services:
     environment:
       AGENTMON_UI_ADDR: :8082
       AGENTMON_QUERY_BASE: http://query-api:8081
+    labels:
+      agentmon.monitor: "true"
+      agentmon.group: agentmon
+      agentmon.role: api
+      agentmon.port: "8082"
 
   event-processor:
     build: .
@@ -83,6 +106,10 @@ services:
       DATABASE_URL: postgres://postgres:pass@postgres:5432/agentmon?sslmode=disable
       NATS_URL: nats://nats:4222
       NATS_TOPIC: agentmon.events.v1
+    labels:
+      agentmon.monitor: "true"
+      agentmon.group: agentmon
+      agentmon.role: worker
 
   swarm-monitor:
     build: .
@@ -100,6 +127,10 @@ services:
       LITELLM_MASTER_KEY: ${LITELLM_MASTER_KEY:-}
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock:ro
+    labels:
+      agentmon.monitor: "true"
+      agentmon.group: agentmon
+      agentmon.role: worker
 
   openclaw-monitor:
     build: .
@@ -121,6 +152,10 @@ services:
       - /home/will/.ssh/id_rsa.pub:/root/.ssh/id_rsa.pub:ro
       - /home/will/.ssh/authorized_keys:/root/.ssh/authorized_keys:ro
       - /var/lib/libvirt:/var/lib/libvirt:ro
+    labels:
+      agentmon.monitor: "true"
+      agentmon.group: agentmon
+      agentmon.role: worker
 
 volumes:
   postgres-data: