docs: replace README with Next.js boilerplate template

Updated README.md from a detailed OllaHub project description to the standard Next.js getting started template, likely to initialize or reset the project as a Next.js application.

hooks/useMarkdown.ts

@@ -0,0 +1,27 @@
+export function extractCodeBlocks(
+  text: string
+): Array<{ language: string; code: string }> {
+  const regex = /```(\w+)?\n([\s\S]*?)```/g;
+  const blocks: Array<{ language: string; code: string }> = [];
+  let match: RegExpExecArray | null;
+  while ((match = regex.exec(text)) !== null) {
+    const language = match[1] || "text";
+    const code = match[2]?.trimEnd() || "";
+    blocks.push({ language, code });
+  }
+  return blocks;
+}
+
+export function stripMarkdown(md: string): string {
+  // Remove code blocks first
+  let plain = md.replace(/```[\s\S]*?```/g, (block) =>
+    block.replace(/```[\s\S]*?\n/, "").replace(/```$/, "")
+  );
+  // Remove inline code
+  plain = plain.replace(/`([^`]+)`/g, "$1");
+  // Remove common markdown syntax
+  plain = plain
+    .replace(/(^|\s)[#>*_~`-]+/g, " ")
+    .replace(/\[(.*?)\]\((.*?)\)/g, "$1");
+  return plain;
+}

hooks/useUserPrefs.ts

@@ -0,0 +1,77 @@
+"use client";
+
+import { useCallback, useEffect, useState } from "react";
+
+export type DevicePref = "auto" | "cpu" | "gpu";
+
+type Prefs = {
+  systemPrompt: string;
+  device: DevicePref;
+  gpuIndex: number; // main_gpu
+  numGpu: number; // num_gpu
+};
+
+const KEYS = {
+  systemPrompt: "ollahub-system-prompt",
+  device: "ollahub-device-pref",
+  gpuIndex: "ollahub-gpu-index",
+  numGpu: "ollahub-num-gpu",
+} as const;
+
+const defaultPrefs: Prefs = {
+  systemPrompt: "",
+  device: "auto",
+  gpuIndex: 0,
+  numGpu: 1,
+};
+
+export function useUserPrefs() {
+  const [prefs, setPrefs] = useState<Prefs>(defaultPrefs);
+  const [ready, setReady] = useState(false);
+
+  useEffect(() => {
+    if (typeof window === "undefined") return;
+    const p: Prefs = {
+      systemPrompt:
+        localStorage.getItem(KEYS.systemPrompt) || defaultPrefs.systemPrompt,
+      device:
+        (localStorage.getItem(KEYS.device) as DevicePref) ||
+        defaultPrefs.device,
+      gpuIndex: Number(
+        localStorage.getItem(KEYS.gpuIndex) || defaultPrefs.gpuIndex
+      ),
+      numGpu: Number(localStorage.getItem(KEYS.numGpu) || defaultPrefs.numGpu),
+    };
+    setPrefs(p);
+    setReady(true);
+  }, []);
+
+  const update = useCallback((next: Partial<Prefs>) => {
+    setPrefs((prev) => {
+      const merged: Prefs = { ...prev, ...next };
+      if (typeof window !== "undefined") {
+        localStorage.setItem(KEYS.systemPrompt, merged.systemPrompt);
+        localStorage.setItem(KEYS.device, merged.device);
+        localStorage.setItem(KEYS.gpuIndex, String(merged.gpuIndex));
+        localStorage.setItem(KEYS.numGpu, String(merged.numGpu));
+      }
+      return merged;
+    });
+  }, []);
+
+  return { prefs, ready, update };
+}
+
+export function buildOllamaOptions(
+  device: DevicePref,
+  numGpu: number,
+  gpuIndex: number
+) {
+  if (device === "auto") return undefined;
+  if (device === "cpu") return { num_gpu: 0 } as const;
+  // gpu
+  return {
+    num_gpu: Math.max(1, numGpu),
+    main_gpu: Math.max(0, gpuIndex),
+  } as const;
+}