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/drc.js

@@ -1,10 +1,17 @@
 export const name = "DRC";
+export const url = "https://wbte.drcedirect.com/PA/portals/pa";
+
+// status.drcedirect.com is a JS-rendered Angular app with no accessible API.
+// Synthetic check against the PA INSIGHT portal instead.
+const PROBE_URL = "https://wbte.drcedirect.com/PA/portals/pa";
 
 export async function checkStatus() {
+  const res = await fetch(PROBE_URL, { method: "HEAD" });
+
   return {
     name,
-    status: "outage",
-    message: "INSIGHT portal is currently unavailable. DRC is aware of the issue.",
+    status: "operational",
+    message: `PA INSIGHT portal responding (HTTP ${res.status}).`,
     lastUpdated: new Date().toISOString(),
   };
 }