Initial commit: Yodmon Yodeck→Zabbix bridge

- Yodeck API poller (every 10 min, paginated, 310 players)
- SQLite persistence (players + activity logs)
- SNMP v2c agent via net-snmp pass_persist
- Zabbix API auto host creation/update (6.0+)
- Flask web dashboard with live player status and log
- Docker deployment with persistent volume
- dev_server.py for local testing without Docker

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

app/scheduler.py

@@ -0,0 +1,40 @@
+import logging
+from apscheduler.schedulers.background import BackgroundScheduler
+from app import database as db
+from app import yodeck as yd
+from app.zabbix import sync_to_zabbix
+from app.config import YODECK_POLL_INTERVAL_MINUTES
+
+log = logging.getLogger(__name__)
+
+
+def poll_yodeck():
+    log.info("Polling Yodeck API …")
+    try:
+        players = yd.get_all_screens()
+        for p in players:
+            db.upsert_player(p)
+        msg = f"Fetched {len(players)} players from Yodeck API"
+        db.add_log('yodeck_fetch', msg, {'count': len(players)})
+        log.info(msg)
+        # Sync host list to Zabbix after a successful fetch
+        sync_to_zabbix(players, db.add_log)
+    except Exception as exc:
+        msg = f"Yodeck poll failed: {exc}"
+        db.add_log('error', msg)
+        log.error(msg)
+
+
+def start_scheduler():
+    scheduler = BackgroundScheduler(daemon=True)
+    scheduler.add_job(
+        poll_yodeck,
+        'interval',
+        minutes=YODECK_POLL_INTERVAL_MINUTES,
+        id='yodeck_poll',
+    )
+    scheduler.start()
+    log.info("Scheduler started — Yodeck poll every %d minutes", YODECK_POLL_INTERVAL_MINUTES)
+    # Run an initial poll immediately so the DB is populated at startup
+    poll_yodeck()
+    return scheduler