refactor web pagination and add partitioned events, flap/timeout showcase agents

deploy/docker-compose.showcase.yml

@@ -9,7 +9,7 @@ services:
       MONLET_STALE_AFTER_SEC: "20"
       MONLET_DEAD_AFTER_SEC: "40"
       MONLET_DETECTOR_TICK_SEC: "5"
-      MONLET_EVENTS_RETENTION_MAX_ROWS: "5000"
+      MONLET_EVENTS_RETENTION_MONTHS: "1"
       MONLET_OUTBOX_RETENTION_MAX_ROWS: "1000"
       MONLET_NOTIFIER_DEBUG_ENABLED: "true"
       MONLET_NOTIFIER_WEBHOOK_ENABLED: "true"
@@ -56,6 +56,32 @@ services:
       agent-mixed:
         condition: service_started
 
+  agent-flap:
+    image: monlet-showcase-agent
+    environment:
+      MONLET_CONFIG: /etc/monlet/agent.toml
+    volumes:
+      - ./showcase/agents/flap.toml:/etc/monlet/agent.toml:ro
+      - ./showcase/checks:/opt/monlet/checks:ro
+    depends_on:
+      server:
+        condition: service_healthy
+      agent-mixed:
+        condition: service_started
+
+  agent-timeout:
+    image: monlet-showcase-agent
+    environment:
+      MONLET_CONFIG: /etc/monlet/agent.toml
+    volumes:
+      - ./showcase/agents/timeout.toml:/etc/monlet/agent.toml:ro
+      - ./showcase/checks:/opt/monlet/checks:ro
+    depends_on:
+      server:
+        condition: service_healthy
+      agent-mixed:
+        condition: service_started
+
   agent-prometheus-owned:
     image: monlet-showcase-agent
     environment: