feat(api): add pagination to messages endpoint and improve chat API robustness

- Add pagination support to /api/conversations/[id]/messages with limit and before query params, returning hasMore and cursor for efficient message fetching
- Enhance /api/ollama/chat by adding non-blocking Ollama availability check and conditionally disabling debug logging in production环境下Featured

app/api/ollama/warmup/route.ts

@@ -0,0 +1,29 @@
+import { NextRequest, NextResponse } from "next/server";
+import { Ollama } from "ollama";
+import { OLLAMA_HOST } from "@/lib/ollama";
+
+export const dynamic = "force-dynamic";
+
+export async function GET(req: NextRequest) {
+  try {
+    const url = new URL(req.url);
+    const model = url.searchParams.get("model");
+    if (!model) {
+      return NextResponse.json({ error: "model required" }, { status: 400 });
+    }
+
+    const client = new Ollama({ host: OLLAMA_HOST });
+    await client.chat({
+      model,
+      messages: [{ role: "system", content: "warm" }],
+      stream: false,
+      options: { keep_alive: "5m" },
+    });
+
+    return NextResponse.json({ warmed: true });
+  } catch (e) {
+    return NextResponse.json({ warmed: false }, { status: 200 });
+  }
+}
+
+