Initial commit — status checker service

Polls Nginx Proxy Manager API for proxy hosts matching configurable
domain patterns (NPM_INCLUDE_PATTERNS), HTTP-checks each every 60s,
serves results as JSON (/api/status) and a terminal-aesthetic HTML
page (/). Port 3035.

NPM connection and domain filter patterns are fully configurable via
environment variables — see README and .env.example.

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

src/npm.ts

@@ -0,0 +1,42 @@
+export interface ProxyHost {
+  domain_names: string[];
+  forward_host: string;
+  forward_port: number;
+  enabled: boolean;
+}
+
+const NPM_BASE = process.env.NPM_BASE_URL ?? 'http://localhost:81';
+const NPM_EMAIL = process.env.NPM_EMAIL ?? '';
+const NPM_SECRET = process.env.NPM_SECRET ?? '';
+
+const rawPatterns = (process.env.NPM_INCLUDE_PATTERNS ?? '\\.goonk\\.se$,\\.dev\\.xplwd\\.com$')
+  .split(',').map(p => new RegExp(p.trim()));
+const INCLUDE_PATTERNS = rawPatterns;
+
+let token: string | null = null;
+let tokenExpiry = 0;
+
+async function getToken(): Promise<string> {
+  if (token && Date.now() < tokenExpiry) return token;
+  const res = await fetch(`${NPM_BASE}/api/tokens`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ identity: NPM_EMAIL, secret: NPM_SECRET }),
+  });
+  const data = await res.json() as { token: string; expires: string };
+  token = data.token;
+  tokenExpiry = new Date(data.expires).getTime() - 60_000;
+  return token;
+}
+
+export async function fetchProxyHosts(): Promise<ProxyHost[]> {
+  const tok = await getToken();
+  const res = await fetch(`${NPM_BASE}/api/nginx/proxy-hosts`, {
+    headers: { Authorization: `Bearer ${tok}` },
+  });
+  const all = await res.json() as ProxyHost[];
+  return all.filter(h =>
+    h.enabled &&
+    h.domain_names.some(d => INCLUDE_PATTERNS.some(p => p.test(d)))
+  );
+}