feat(agent): scheduler, healthcheck, and container entrypoint

agent/tests/test_scheduler.py

@@ -0,0 +1,30 @@
+from datetime import timedelta
+
+from apscheduler.schedulers.background import BackgroundScheduler
+
+from agent.config import AgentConfig
+from agent.scheduler import build_scheduler
+
+
+def _cfg(minutes: int) -> AgentConfig:
+    return AgentConfig(
+        db_host="db",
+        db_port=5432,
+        db_user="u",
+        db_password="p",
+        agent_db_name="agentdb",
+        firefly_url="http://app:8080",
+        firefly_token="tok",
+        heartbeat_interval_minutes=minutes,
+    )
+
+
+def test_build_scheduler_registers_heartbeat_at_configured_interval():
+    scheduler = build_scheduler(_cfg(minutes=15), scheduler_class=BackgroundScheduler)
+    scheduler.start(paused=True)
+    try:
+        job = scheduler.get_job("heartbeat")
+        assert job is not None
+        assert job.trigger.interval == timedelta(minutes=15)
+    finally:
+        scheduler.shutdown(wait=False)