Performance, SEO, a11y, and code quality improvements

1. Performance: 25 pages switched from force-dynamic to revalidate=300 (ISR);
   2 pages (community, developers) now fully static (SSG)
2. DB indexes: Added @@index on foreign keys for WebsiteArticles,
   WebsiteArticleReactions, WebsiteArticleComments, WebsiteHelpCenterTickets,
   WebsiteShopArticles, RadioSongRequests, StaffActivities
3. SEO: Added robots.ts, sitemap.ts, canonical URLs, Open Graph + Twitter
   Card metadata on root layout and news articles
4. A11Y: Replaced <details>/<summary> dropdowns with accessible button-based
   NavDropdown (aria-expanded, aria-haspopup, role=menu). MobileNav now
   uses translated aria-label, aria-expanded, aria-controls, role=menu
5. Code quality: Added try/catch to updateArticle/deleteArticle; deleteArticle
   now uses prisma. for atomicity
6. CI/CD: Added GitHub Actions workflow (typecheck + test)
7. i18n: Added openMenu/closeMenu keys to all 6 locales
8. Observability: Health endpoint now checks SMTP reachability when configured
9. Loading states: Added loading.tsx for root, admin, and news sections
10. Word filter cache: Added 60s TTL auto-refresh instead of manual cache bust

src/app/api/health/route.ts

@@ -1,24 +1,42 @@
 import { apiJson } from "@/lib/api";
 import { prisma } from "@/lib/prisma";
 import { rcon } from "@/lib/services/rcon";
+import { env } from "@/env";
 
 export const dynamic = "force-dynamic";
 
 /**
- * Ops health probe: database reachability, emulator RCON reachability, and
- * runtime info. Returns HTTP 200 always (read the `status`/`database` fields),
- * so it's safe for uptime monitors that only care about reachability.
+ * Ops health probe: database reachability, emulator RCON reachability, SMTP
+ * (when configured), and runtime info. Returns HTTP 200 always (read the
+ * `status`/`database` fields), so it's safe for uptime monitors that only care
+ * about reachability.
  */
 export async function GET() {
   const database = await prisma
     .$queryRaw`SELECT 1`.then(() => true)
     .catch(() => false);
+
   const emulator = await rcon.send("ping", null).catch(() => false);
 
+  let smtp = null;
+  if (env.SMTP_HOST) {
+    const nodemailer = await import("nodemailer");
+    const test = nodemailer.createTransport({
+      host: env.SMTP_HOST,
+      port: env.SMTP_PORT,
+      secure: env.SMTP_SECURE,
+      auth: env.SMTP_USER
+        ? { user: env.SMTP_USER, pass: env.SMTP_PASSWORD ?? "" }
+        : undefined,
+    });
+    smtp = await test.verify().then(() => true).catch(() => false);
+  }
+
   return apiJson({
     status: database ? "ok" : "degraded",
     database,
     emulator,
+    smtp,
     node: process.version,
     uptime: Math.round(process.uptime()),
     time: new Date().toISOString(),