Add cron schedules and sync docs

examples/README.md

@@ -1,3 +1,12 @@
 # Examples
 
-Examples for checks, configs, and local demos.
+Small payloads and scripts used by local smoke tests and manual API checks.
+
+Files:
+
+- `heartbeat.json` - example agent heartbeat request body.
+- `event-batch.json` - example event batch request body.
+- `checks/example_check.sh` - minimal shell check that follows the Monlet exit-code contract.
+
+Use these examples as templates only. Real agents normally send heartbeat and
+event payloads through the Go agent, not by hand-written curl requests.