Frontend Refactoring: HTML/CSS/JS getrennt, modulare Struktur

wwwroot/js/api.js

@@ -0,0 +1,14 @@
+// ── API Calls ──
+
+async function apiChat(model, messages, systemPrompt) {
+  return fetch('/api/chat', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ model, messages, systemPrompt })
+  });
+}
+
+async function apiHistory(sessionId = 'null', limit = 50) {
+  const resp = await fetch(`/api/history?sessionId=${sessionId}&limit=${limit}`);
+  return resp.json();
+}