feat(core): 添加模型下载路径配置功能

- 新增 get_default_save_dir Tauri 命令用于获取默认保存目录
- 修改 download_model 命令支持自定义保存路径参数
- 在模型页面集成本地存储的保存路径配置
- 添加 MSW 到 pnpm 工作区允许构建列表

feat(ui): 添加模型设置页面

- 创建新的设置页面用于配置模型下载路径
- 实现路径选择、保存和重置功能
- 集成到侧边栏导航菜单中
- 使用 localStorage 持久化保存用户配置

refactor(routes): 重构设置页面路由结构

- 移除旧的侧边栏导航组件
- 更新路由配置以支持新的模型设置页面
- 生成相应的路由类型定义更新

feat(server): 添加 OpenAI 兼容的模型接口

- 在 /v1 路径下添加 models 接口端点
- 提供与 OpenAI API 兼容的模型列表功能

aha-ui/src/features/models/index.tsx

@@ -9,6 +9,8 @@ import { Main } from "@/components/layout/main"
 import { ProfileDropdown } from "@/components/profile-dropdown"
 import { ThemeSwitch } from "@/components/theme-switch"
 
+const SAVE_DIR_KEY = "aha-model-save-dir"
+
 interface ModelInfo {
   model_id: string
   owner: string
@@ -67,7 +69,8 @@ export function ModelsPage() {
     setDownloading(modelId)
     setError(null)
     try {
-      await invoke("download_model", { modelId })
+      const saveDir = localStorage.getItem(SAVE_DIR_KEY) || null
+      await invoke("download_model", { modelId, saveDir })
       await loadModels()
     } catch (e) {
       setError(String(e))

aha-ui/src/features/settings/index.tsx

@@ -1,5 +1,4 @@
 import { Outlet } from '@tanstack/react-router'
-import { Monitor, Bell, Palette, Wrench, UserCog } from 'lucide-react'
 import { Separator } from '@/components/ui/separator'
 import { ConfigDrawer } from '@/components/config-drawer'
 import { Header } from '@/components/layout/header'
@@ -7,35 +6,6 @@ import { Main } from '@/components/layout/main'
 import { ProfileDropdown } from '@/components/profile-dropdown'
 import { Search } from '@/components/search'
 import { ThemeSwitch } from '@/components/theme-switch'
-import { SidebarNav } from './components/sidebar-nav'
-
-const sidebarNavItems = [
-  {
-    title: 'Profile',
-    href: '/settings',
-    icon: <UserCog size={18} />,
-  },
-  {
-    title: 'Account',
-    href: '/settings/account',
-    icon: <Wrench size={18} />,
-  },
-  {
-    title: 'Appearance',
-    href: '/settings/appearance',
-    icon: <Palette size={18} />,
-  },
-  {
-    title: 'Notifications',
-    href: '/settings/notifications',
-    icon: <Bell size={18} />,
-  },
-  {
-    title: 'Display',
-    href: '/settings/display',
-    icon: <Monitor size={18} />,
-  },
-]
 
 export function Settings() {
   return (
@@ -58,13 +28,8 @@ export function Settings() {
           </p>
         </div>
         <Separator className='my-4 lg:my-6' />
-        <div className='flex flex-1 flex-col space-y-2 overflow-hidden md:space-y-2 lg:flex-row lg:space-y-0 lg:space-x-12'>
-          <aside className='top-0 lg:sticky lg:w-1/5'>
-            <SidebarNav items={sidebarNavItems} />
-          </aside>
-          <div className='flex w-full overflow-y-hidden p-1'>
-            <Outlet />
-          </div>
+        <div className='flex w-full overflow-y-hidden p-1'>
+          <Outlet />
         </div>
       </Main>
     </>

aha-ui/src/features/settings/model/index.tsx

@@ -0,0 +1,74 @@
+import { useState, useEffect } from "react"
+import { invoke } from "@tauri-apps/api/core"
+import { FolderOpen } from "lucide-react"
+import { Button } from "@/components/ui/button"
+import { Input } from "@/components/ui/input"
+import { Label } from "@/components/ui/label"
+import { ContentSection } from "../components/content-section"
+
+const SAVE_DIR_KEY = "aha-model-save-dir"
+
+export function SettingsModel() {
+  const [saveDir, setSaveDir] = useState("")
+  const [defaultDir, setDefaultDir] = useState("")
+  const [saved, setSaved] = useState(false)
+
+  useEffect(() => {
+    invoke<string>("get_default_save_dir")
+      .then(setDefaultDir)
+      .catch(() => {})
+
+    const stored = localStorage.getItem(SAVE_DIR_KEY)
+    if (stored) setSaveDir(stored)
+  }, [])
+
+  const handleSave = () => {
+    if (saveDir) {
+      localStorage.setItem(SAVE_DIR_KEY, saveDir)
+    } else {
+      localStorage.removeItem(SAVE_DIR_KEY)
+    }
+    setSaved(true)
+    setTimeout(() => setSaved(false), 2000)
+  }
+
+  const handleReset = () => {
+    setSaveDir("")
+    localStorage.removeItem(SAVE_DIR_KEY)
+  }
+
+  return (
+    <ContentSection
+      title='Model'
+      desc='配置模型下载位置和相关设置'
+    >
+      <div className='space-y-6'>
+        <div className='space-y-2'>
+          <Label htmlFor='save-dir' className='flex items-center gap-1.5'>
+            <FolderOpen className='w-4 h-4' />
+            模型下载路径
+          </Label>
+          <Input
+            id='save-dir'
+            value={saveDir}
+            onChange={(e) => setSaveDir(e.target.value)}
+            placeholder={defaultDir || "~/.aha/"}
+          />
+          <p className='text-xs text-muted-foreground'>
+            留空则使用默认路径：{defaultDir || "~/.aha/"}
+            。模型将下载到该目录下的 {`{model_id}`} 子文件夹中。
+          </p>
+        </div>
+
+        <div className='flex gap-2'>
+          <Button onClick={handleSave}>
+            {saved ? "已保存" : "保存"}
+          </Button>
+          <Button variant='outline' onClick={handleReset}>
+            恢复默认
+          </Button>
+        </div>
+      </div>
+    </ContentSection>
+  )
+}