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/powerschool.js

@@ -1,10 +1,40 @@
 export const name = "PowerSchool";
+export const url = "https://status.powerschool.com/";
+
+const STATUS_URL = "https://status.powerschool.com/api/v2/summary.json";
+
+const STATUS_MAP = {
+  none: "operational",
+  minor: "degraded",
+  major: "degraded",
+  critical: "outage",
+};
 
 export async function checkStatus() {
+  const res = await fetch(STATUS_URL);
+
+  if (!res.ok) {
+    throw new Error(`PowerSchool status request failed (${res.status})`);
+  }
+
+  const data = await res.json();
+  const indicator = data.status?.indicator ?? "unknown";
+  const status = STATUS_MAP[indicator] ?? "unknown";
+
+  const incidents = data.incidents ?? [];
+  const activeIncidents = incidents.filter((i) => i.status !== "resolved");
+
+  let message;
+  if (activeIncidents.length > 0) {
+    message = activeIncidents.map((i) => i.name).join("; ");
+  } else {
+    message = data.status?.description ?? "Status unavailable.";
+  }
+
   return {
     name,
-    status: "degraded",
-    message: "Slow response times reported. PowerSchool is investigating.",
+    status,
+    message,
     lastUpdated: new Date().toISOString(),
   };
 }