Initial commit: Visigine (Vite client + Express/SQLite backend)

Container-ready via docker/ compose (frontend nginx + backend Node). Compose adjusted for Coolify on the prod server: frontend uses expose:80 (no host binding — host 8080 is taken by the Coolify proxy; Traefik routes visigine.de), backend ALLOWED_ORIGINS=https://visigine.de. Secrets stay in server/.env (git-ignored); see server/.env.example.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

server/lib/parser.js

@@ -0,0 +1,16 @@
+// Extracts the parts of the HTML response that downstream checks need.
+export function parseHtml(html) {
+  const safe = html || ''
+  const headMatch = safe.match(/<head[\s\S]*?<\/head>/i)
+  const headHtml = headMatch ? headMatch[0] : safe.slice(0, 4000)
+
+  const jsonLdBlocks = [
+    ...safe.matchAll(/<script[^>]*type=["']application\/ld\+json["'][^>]*>([\s\S]*?)<\/script>/gi),
+  ]
+    .map((m) => m[1].trim())
+    .filter(Boolean)
+
+  const jsonLdJoined = jsonLdBlocks.join('\n---\n')
+
+  return { headHtml, jsonLdBlocks, jsonLdJoined }
+}