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/spamtitan.js

@@ -1,10 +1,47 @@
+import https from "https";
+
 export const name = "SpamTitan";
+export const url = "https://mailportal.nhsd.net";
+
+const HOST = "mailportal.nhsd.net";
+const TIMEOUT_MS = 8000;
+
+// TODO: TitanHQ has extensive API docs — investigate using the SpamTitan API
+// for richer status data (queue depth, filtering stats, etc.) rather than
+// a simple synthetic check.
+
+// Synthetic check — hit the appliance directly and see if it responds.
+// Uses https.request so we can skip self-signed cert verification.
+function probe(host) {
+  return new Promise((resolve, reject) => {
+    const req = https.request(
+      {
+        hostname: host,
+        path: "/",
+        method: "HEAD",
+        rejectUnauthorized: false, // local appliance may have self-signed cert
+        timeout: TIMEOUT_MS,
+      },
+      (res) => resolve(res.statusCode)
+    );
+
+    req.on("timeout", () => {
+      req.destroy();
+      reject(new Error("Connection timed out"));
+    });
+
+    req.on("error", reject);
+    req.end();
+  });
+}
 
 export async function checkStatus() {
+  const statusCode = await probe(HOST);
+
   return {
     name,
     status: "operational",
-    message: "Email filtering operational.",
+    message: `Mail portal responding (HTTP ${statusCode}).`,
     lastUpdated: new Date().toISOString(),
   };
 }