feat(mcp): Traefik routers, certificates and traffic (#5838)

list_routers grades every router as the Traefik page does (the last 15
minutes, 5xx on its cutoff, 4xx and p95 against the router's normal) and
gives a troubled one its status codes, what they mean and the swarm
service behind it. get_router adds its history, codes, normal and
anomalies; list_certificates the served certificates and the routers they
cover; get_traffic the access log's clients, countries and routers.
get_overview names a router answering 5xx and a certificate near expiry.

The access-log aggregation moves into routes.summarize_access, shared by
the traffic page and get_traffic.

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

plugins/traefik/__init__.py

@@ -62,3 +62,13 @@ def get_alert_metrics() -> dict[str, list[str]]:
     return {"traefik": ["request_rate", "error_rate_4xx_pct", "error_rate_5xx_pct",
                         "latency_p50_ms", "latency_p95_ms", "latency_p99_ms",
                         "response_bytes_rate", "cert_expiry_days"]}
+
+
+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)