feat(mcp): the UniFi network: WAN, devices, clients, events, alarms and config (#5839)

get_network gives the WAN, clients, Wi-Fi networks, speed tests and devices
by status; list_devices, list_clients (everyone seen, or the newest poll's
top talkers), list_network_events, list_alarms and get_network_config
(networks, port forwards, firewall rules) read what the poller stored.
get_overview names the WAN down while the poll is current, a device offline
or degraded that the controller still reports, and active alarms.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

plugins/unifi/__init__.py

@@ -45,3 +45,13 @@ def get_alert_metrics() -> dict[str, list[str]]:
     """What scheduler.py records: the WAN (resource "wan") and the client count
     (resource "clients")."""
     return {"unifi": ["is_up", "latency_ms", "total_clients"]}
+
+
+def register_mcp_tools(register) -> None:
+    from .mcp_tools import register_tools
+    register_tools(register)
+
+
+async def mcp_overview(db) -> list[dict]:
+    from .mcp_tools import mcp_overview as findings
+    return await findings(db)