Complete rewrite: full-featured network monitoring dashboard

- Two-service architecture: Flask web app (gandalf.service) + background
  polling daemon (gandalf-monitor.service)
- Monitor polls Prometheus node_network_up for physical NIC states on all
  6 hypervisors (added storage-01 at 10.10.10.11:9100)
- UniFi API monitoring for switches, APs, and gateway device status
- Ping reachability for hosts without node_exporter (pbs only now)
- Smart baseline: interfaces first seen as down are never alerted on;
  only UP→DOWN regressions trigger tickets
- Cluster-wide P1 ticket when 3+ hosts have genuine simultaneous
  interface regressions (guards against false positives on startup)
- Tinker Tickets integration with 24-hour hash-based deduplication
- Alert suppression: manual toggle or timed windows (30m/1h/4h/8h)
- Authelia SSO via forward-auth headers, admin group required
- Network topology: Internet → UDM-Pro → Agg Switch (10G DAC) →
  PoE Switch (10G DAC) → Hosts
- MariaDB schema, suppression management UI, host/interface cards

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

config.json

@@ -4,5 +4,61 @@
     "api_key": "kyPfIsAVie3hwMD4Bc1MjAu8N7HVPIb8",
     "site_id": "default"
   },
-  "check_interval": 30
-}
+  "prometheus": {
+    "url": "http://10.10.10.48:9090"
+  },
+  "database": {
+    "host": "10.10.10.50",
+    "port": 3306,
+    "user": "gandalf",
+    "password": "Gandalf2026Lotus",
+    "name": "gandalf"
+  },
+  "ticket_api": {
+    "url": "http://10.10.10.45/create_ticket_api.php",
+    "api_key": "5acc5d3c647b84f7c6f59082ce4450ee772e2d1633238b960136f653d20c93af"
+  },
+  "auth": {
+    "allowed_groups": ["admin"]
+  },
+  "monitor": {
+    "poll_interval": 120,
+    "failure_threshold": 2,
+    "cluster_threshold": 3,
+    "ping_hosts": [
+      {"name": "pbs", "ip": "10.10.10.3"}
+    ]
+  },
+  "hosts": [
+    {
+      "name": "large1",
+      "ip": "10.10.10.2",
+      "prometheus_instance": "10.10.10.2:9100"
+    },
+    {
+      "name": "compute-storage-01",
+      "ip": "10.10.10.4",
+      "prometheus_instance": "10.10.10.4:9100"
+    },
+    {
+      "name": "micro1",
+      "ip": "10.10.10.8",
+      "prometheus_instance": "10.10.10.8:9100"
+    },
+    {
+      "name": "monitor-02",
+      "ip": "10.10.10.9",
+      "prometheus_instance": "10.10.10.9:9100"
+    },
+    {
+      "name": "compute-storage-gpu-01",
+      "ip": "10.10.10.10",
+      "prometheus_instance": "10.10.10.10:9100"
+    },
+    {
+      "name": "storage-01",
+      "ip": "10.10.10.11",
+      "prometheus_instance": "10.10.10.11:9100"
+    }
+  ]
+}