Implement all vendor integrations, WAN graphs, and FortiGate health panel

- Wire up 26 vendor providers: Atlassian Statuspage API, Status.io, Instatus,
  AWS RSS feeds, Apple/Google JSON feeds, M365 Graph API, and synthetic checks
- Add 11 new providers: AWS, Cloudflare, SmartPass, School Dismissal Manager,
  SherpaDesk, Classkick, ClassDojo, Savvas, Study Island, Promethean, RAZ-Kids
- Rename Local Infrastructure → Internet (TCP check to 8.8.8.8:53)
- Add WAN throughput graph section: dual-link canvas graphs (Crown Castle +
  Comcast) polling FortiGate REST API every 30s with 30-min rolling history
- Add FortiGate health card: uptime, CPU %, memory % from FortiOS API
- Add /api/throughput and /api/fortigate-health endpoints
- Add README with setup instructions

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

backend/providers/schoolmessenger.js

@@ -1,10 +1,62 @@
 export const name = "SchoolMessenger";
+export const url = "https://status.powerschool.com/";
+
+// SchoolMessenger was acquired by PowerSchool and lives on their status page
+// as a group of components. We filter specifically for those rather than
+// duplicating the overall PowerSchool check.
+const COMPONENTS_URL =
+  "https://status.powerschool.com/api/v2/components.json";
+
+// Atlassian component status → dashboard status
+const STATUS_MAP = {
+  operational: "operational",
+  under_maintenance: "degraded",
+  degraded_performance: "degraded",
+  partial_outage: "degraded",
+  major_outage: "outage",
+};
+
+const SEVERITY_ORDER = ["operational", "degraded", "outage"];
+
+function worstStatus(a, b) {
+  return SEVERITY_ORDER.indexOf(a) >= SEVERITY_ORDER.indexOf(b) ? a : b;
+}
 
 export async function checkStatus() {
+  const res = await fetch(COMPONENTS_URL);
+
+  if (!res.ok) {
+    throw new Error(`SchoolMessenger status request failed (${res.status})`);
+  }
+
+  const data = await res.json();
+  const components = (data.components ?? []).filter((c) =>
+    c.name.startsWith("SchoolMessenger")
+  );
+
+  if (components.length === 0) {
+    throw new Error("No SchoolMessenger components found on status page");
+  }
+
+  let overall = "operational";
+  const issues = [];
+
+  for (const c of components) {
+    const mapped = STATUS_MAP[c.status] ?? "unknown";
+    overall = worstStatus(overall, mapped);
+
+    if (mapped !== "operational") {
+      issues.push(`${c.name}: ${c.status.replace(/_/g, " ")}`);
+    }
+  }
+
+  const message =
+    issues.length > 0 ? issues.join(" | ") : "All services operational.";
+
   return {
     name,
-    status: "operational",
-    message: "Messaging services operational.",
+    status: overall,
+    message,
     lastUpdated: new Date().toISOString(),
   };
 }