Update server.js

server.js

@@ -49,8 +49,9 @@ app.use(cors());
 app.use(express.json({ limit: "10mb" }));
 app.use(express.static(path.join(__dirname, "public")));
 
-// ── SINGLE MODEL: DeepSeek via HF Space ────────────────────────────────────
-const HF_CHAT_URL = "https://reikernx-coopbuild.hf.space/chat";
+// ── SINGLE MODEL: LongCat API (Anthropic format) ────────────────────────────
+const LONGCAT_API_URL = "https://api.longcat.chat/anthropic/v1/messages";
+const LONGCAT_API_KEY = "ak_2ep6ba2Ww0pn5cH09U2Mq3Eo0ez1M";
 
 // All model keys from the UI now map to DeepSeek — one API, no confusion
 const MODELS = {
@@ -292,37 +293,47 @@ async function webSearch(query) {
   return { answer: data.text || "", citations: data.citations || [], model: data.model || "gpt-5" };
 }
 
-// ── callAI — single DeepSeek endpoint ─────────────────────────────────────
+// ── callAI — LongCat API (Anthropic format) ────────────────────────────────
 // system   = role/task definition + original user request for context anchoring
 // query    = specific data for this call (file snippet, cmd results, etc.)
-// _modelKey accepted but ignored — all calls route to DeepSeek
+// _modelKey accepted but ignored — all calls route to LongCat-Flash-Chat
 // history  = [{role:"user"|"assistant", content:"..."}] — conversation transcript
-//            The HF space's build_messages() uses this to give DeepSeek full context.
-//            This is the sheet's "conversation history IS memory" pattern.
 async function callAI(system, query, _modelKey, history = []) {
   const userMessage = query ? `${system}\n\n${query}` : system;
 
-  // Sanitize history — HF space expects [{role, content}], trim to last 10 turns
+  // Sanitize history — Anthropic expects [{role, content}], trim to last 10 turns
   const safeHistory = (Array.isArray(history) ? history : [])
     .filter(h => h && (h.role === "user" || h.role === "assistant") && h.content)
     .slice(-20) // last 10 user+assistant pairs
     .map(h => ({ role: h.role, content: String(h.content).slice(0, 800) })); // cap each turn
 
+  // Build messages array: inject history then the new user message
+  const messages = [
+    ...safeHistory,
+    { role: "user", content: userMessage.slice(0, 5500) },
+  ];
+
   const payload = {
-    message: userMessage.slice(0, 5500),
-    model: "deepseek",
-    system_message: "You are Cryo, a precise developer AI. Respond with valid JSON only — no markdown fences, no prose. The original user request is embedded in the message; never lose sight of it.",
-    history: safeHistory,
+    model: "LongCat-Flash-Chat",
     max_tokens: 2000,
-    temperature: 0.2,
-    stream: false,
+    system: "You are Cryo, a precise developer AI. Respond with valid JSON only — no markdown fences, no prose. The original user request is embedded in the message; never lose sight of it.",
+    messages,
   };
 
-  const { data } = await axios.post(HF_CHAT_URL, payload, {
+  const { data } = await axios.post(LONGCAT_API_URL, payload, {
     timeout: 60000,
-    headers: { "Content-Type": "application/json" },
+    headers: {
+      "Content-Type": "application/json",
+      "Authorization": `Bearer ${LONGCAT_API_KEY}`,
+      "anthropic-version": "2023-06-01",
+    },
   });
 
+  // Anthropic format: data.content is an array of blocks
+  if (data.content && Array.isArray(data.content)) {
+    const textBlock = data.content.find(b => b.type === "text");
+    return textBlock ? textBlock.text : "";
+  }
   return data.reply || data.text || data.message || "";
 }