diff --git a/frontend/src/contracts/index.ts b/frontend/src/contracts/index.ts
index aaba2a7..cf1a1be 100644
--- a/frontend/src/contracts/index.ts
+++ b/frontend/src/contracts/index.ts
@@ -290,6 +290,14 @@ export interface ProviderConfig {
   has_credential: boolean
 }
 
+export interface ProviderPreset {
+  preset_id: string
+  name: string
+  provider_type: ProviderType
+  base_url: string
+  requires_credential: boolean
+}
+
 // ============ Tasks ============
 
 export type TaskStatus = 'todo' | 'in_progress' | 'done' | 'cancelled'
@@ -510,6 +518,14 @@ export interface ApiProviderConfig {
   capabilities: string[]
 }
 
+export interface ApiProviderPreset {
+  preset_id: string
+  name: string
+  provider_type: ApiProviderType
+  base_url: string
+  requires_credential: boolean
+}
+
 export interface ApiModelInfo {
   model: string
   display_name: string
diff --git a/frontend/src/features/settings/SettingsView.vue b/frontend/src/features/settings/SettingsView.vue
index 6462c36..62503f8 100644
--- a/frontend/src/features/settings/SettingsView.vue
+++ b/frontend/src/features/settings/SettingsView.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { onMounted, reactive, ref } from 'vue'
+import { computed, onMounted, reactive, ref } from 'vue'
 import type { ProviderConfig, ProviderType } from '@/contracts'
 import { useProviderStore } from '@/stores/provider'
 import { useSettingsStore } from '@/stores/settings'
@@ -18,24 +18,60 @@ const showProviderForm = ref(false)
 const editingProviderId = ref<string | null>(null)
 const providerAction = ref('')
 const testResults = ref<Record<string, string>>({})
-const providerForm = reactive({ provider_type: 'openai_compatible' as ProviderType, name: '', base_url: '', default_model: '', credential_id: '', enabled: true })
+const providerForm = reactive({ preset_id: '', provider_type: 'openai_compatible' as ProviderType, name: '', base_url: '', default_model: '', credential_id: '', enabled: true })
+const formModels = computed(() => editingProviderId.value ? providerStore.modelsByProvider[editingProviderId.value] ?? [] : [])
 
-onMounted(() => { void providerStore.loadProviders(); void settingsStore.loadDiagnostics() })
+onMounted(async () => {
+  await Promise.all([providerStore.loadProviders(), providerStore.loadPresets(), settingsStore.loadDiagnostics()])
+  await providerStore.refreshEnabledModels()
+})
+
+function presetIdFor(provider?: ProviderConfig) {
+  if (!provider) return ''
+  return providerStore.presets.find((preset) =>
+    preset.provider_type === provider.provider_type && preset.base_url === provider.base_url
+  )?.preset_id ?? ''
+}
 
 function openProvider(provider?: ProviderConfig) {
   editingProviderId.value = provider?.provider_id ?? null
-  Object.assign(providerForm, { provider_type: provider?.provider_type ?? 'openai_compatible', name: provider?.name ?? '', base_url: provider?.base_url ?? '', default_model: provider?.default_model ?? '', credential_id: provider?.credential_id ?? '', enabled: provider?.enabled ?? true })
+  Object.assign(providerForm, { preset_id: presetIdFor(provider), provider_type: provider?.provider_type ?? 'openai_compatible', name: provider?.name ?? '', base_url: provider?.base_url ?? '', default_model: provider?.default_model ?? '', credential_id: provider?.credential_id ?? '', enabled: provider?.enabled ?? true })
   showProviderForm.value = true
+  if (provider) void providerStore.loadModels(provider.provider_id).catch(() => undefined)
+}
+
+function applyProviderPreset() {
+  const preset = providerStore.presets.find((item) => item.preset_id === providerForm.preset_id)
+  if (!preset) return
+  Object.assign(providerForm, {
+    provider_type: preset.provider_type,
+    name: preset.name,
+    base_url: preset.base_url,
+  })
 }
 
 async function saveProvider() {
   providerAction.value = ''
   const data = { ...providerForm, base_url: providerForm.base_url || undefined, credential_id: providerForm.credential_id || undefined, capabilities: {}, has_credential: Boolean(providerForm.credential_id) }
-  try { if (editingProviderId.value) await providerStore.updateProvider(editingProviderId.value, data); else await providerStore.addProvider(data); showProviderForm.value = false } catch (error) { providerAction.value = error instanceof Error ? error.message : 'Provider 保存失败' }
+  try {
+    const saved = editingProviderId.value
+      ? await providerStore.updateProvider(editingProviderId.value, data)
+      : await providerStore.addProvider(data)
+    showProviderForm.value = false
+    if (saved.enabled) void providerStore.loadModels(saved.provider_id).catch(() => undefined)
+  } catch (error) {
+    providerAction.value = error instanceof Error ? error.message : 'Provider 保存失败'
+  }
 }
 
 async function removeProvider(provider: ProviderConfig) { if (!confirm(`确定删除 Provider“${provider.name}”吗？`)) return; try { await providerStore.deleteProvider(provider.provider_id) } catch (error) { providerAction.value = error instanceof Error ? error.message : '删除失败' } }
 async function testProvider(provider: ProviderConfig) { testResults.value[provider.provider_id] = '测试中…'; const result = await providerStore.testProvider(provider.provider_id); testResults.value[provider.provider_id] = result.success ? `连接成功${result.latency_ms ? ` · ${result.latency_ms}ms` : ''}` : `连接失败：${result.error}` }
+async function refreshModels(provider: ProviderConfig) { await providerStore.loadModels(provider.provider_id).catch(() => undefined) }
+async function chooseDefaultModel(provider: ProviderConfig, event: Event) {
+  const defaultModel = (event.target as HTMLSelectElement).value
+  try { await providerStore.updateProvider(provider.provider_id, { default_model: defaultModel }) }
+  catch (error) { providerAction.value = error instanceof Error ? error.message : '默认模型更新失败' }
+}
 </script>
 
 <template>
@@ -47,7 +83,38 @@ async function testProvider(provider: ProviderConfig) { testResults.value[provid
 
     <div v-else-if="activeSection === 'editor'" class="panel settings-section"><h2>编辑器</h2><div class="setting-row"><span><strong>默认模式</strong><small>新打开文件使用的编辑器模式</small></span><select v-model="settingsStore.defaultEditorMode" class="select short"><option value="wysiwyg">写作与预览</option><option value="source">Markdown 源码</option></select></div><div class="setting-row"><span><strong>字号</strong></span><input v-model.number="themeStore.fontEditorSize" class="input short" type="number" min="12" max="32" /></div><div class="setting-row"><span><strong>行高</strong></span><input v-model.number="themeStore.lineHeight" class="input short" type="number" min="1.2" max="2.4" step="0.1" /></div><div class="setting-row"><span><strong>行宽</strong><small>Markdown 预览最大字符宽度</small></span><input v-model.number="settingsStore.editorLineWidth" class="input short" type="number" min="40" max="140" /></div><label class="setting-row"><span><strong>拼写检查</strong></span><input v-model="settingsStore.spellCheck" type="checkbox" /></label></div>
 
-    <div v-else-if="activeSection === 'providers'" class="settings-section"><div class="section-head"><h2>模型提供商</h2><button class="button-primary" @click="openProvider()">新增 Provider</button></div><div v-if="providerStore.error || providerAction" class="error-banner">{{ providerStore.error || providerAction }}</div><div class="provider-list"><article v-for="provider in providerStore.providers" :key="provider.provider_id" class="item-card provider-card"><div><div class="inline-actions"><strong>{{ provider.name }}</strong><span class="badge" :class="{ success: provider.enabled }">{{ provider.provider_type }}</span></div><p class="subtle">{{ provider.base_url || '本地内置' }} · 默认模型 {{ provider.default_model || '未设置' }}</p><div class="tag-list"><span v-for="(_, capability) in provider.capabilities" :key="capability" class="badge">{{ capability }}</span></div><p v-if="testResults[provider.provider_id]" class="test-result">{{ testResults[provider.provider_id] }}</p></div><div class="inline-actions"><button class="button-secondary" @click="testProvider(provider)">测试</button><button class="button-secondary" @click="openProvider(provider)">编辑</button><button class="button-danger" :disabled="provider.provider_id === 'mock'" @click="removeProvider(provider)">删除</button></div></article></div></div>
+    <div v-else-if="activeSection === 'providers'" class="settings-section">
+      <div class="section-head">
+        <div><h2>模型提供商</h2><p class="subtle">支持 OpenAI、DeepSeek、Ollama 和自定义兼容服务。</p></div>
+        <button class="button-primary" @click="openProvider()">新增 Provider</button>
+      </div>
+      <div v-if="providerStore.error || providerAction" class="error-banner">{{ providerStore.error || providerAction }}</div>
+      <div class="provider-list">
+        <article v-for="provider in providerStore.providers" :key="provider.provider_id" class="item-card provider-card">
+          <div class="provider-main">
+            <div class="inline-actions"><strong>{{ provider.name }}</strong><span class="badge" :class="{ success: provider.enabled }">{{ provider.provider_type }}</span></div>
+            <p class="subtle">{{ provider.base_url || '本地内置' }} · 默认模型 {{ provider.default_model || '未设置' }}</p>
+            <div class="tag-list"><span v-for="(_, capability) in provider.capabilities" :key="capability" class="badge">{{ capability }}</span></div>
+            <div v-if="providerStore.modelsByProvider[provider.provider_id]?.length" class="model-picker">
+              <label :for="`default-model-${provider.provider_id}`">默认模型</label>
+              <select :id="`default-model-${provider.provider_id}`" class="select" :value="provider.default_model" @change="chooseDefaultModel(provider, $event)">
+                <option value="">未设置</option>
+                <option v-for="model in providerStore.modelsByProvider[provider.provider_id]" :key="model.model_id" :value="model.model_id">{{ model.name }}</option>
+              </select>
+              <span class="subtle">已获取 {{ providerStore.modelsByProvider[provider.provider_id].length }} 个模型</span>
+            </div>
+            <p v-if="providerStore.modelErrorsByProvider[provider.provider_id]" class="error-text">模型获取失败：{{ providerStore.modelErrorsByProvider[provider.provider_id] }}</p>
+            <p v-if="testResults[provider.provider_id]" class="test-result">{{ testResults[provider.provider_id] }}</p>
+          </div>
+          <div class="inline-actions provider-actions">
+            <button class="button-secondary" :disabled="providerStore.modelLoadingByProvider[provider.provider_id]" @click="refreshModels(provider)">{{ providerStore.modelLoadingByProvider[provider.provider_id] ? '获取中…' : '刷新模型' }}</button>
+            <button class="button-secondary" @click="testProvider(provider)">测试</button>
+            <button class="button-secondary" @click="openProvider(provider)">编辑</button>
+            <button class="button-danger" :disabled="provider.provider_id === 'mock'" @click="removeProvider(provider)">删除</button>
+          </div>
+        </article>
+      </div>
+    </div>
 
     <div v-else-if="activeSection === 'index'" class="panel settings-section"><h2>索引与模型</h2><div class="index-summary"><div><span class="badge" :class="{ success: settingsStore.indexStatus.status === 'idle', error: settingsStore.indexStatus.status === 'error' }">{{ settingsStore.indexStatus.status }}</span><p>待处理任务 {{ settingsStore.indexStatus.pending_jobs }}</p></div><div><strong>{{ settingsStore.indexStatus.total_notes }}</strong><small>笔记</small></div><div><strong>{{ settingsStore.indexStatus.total_blocks }}</strong><small>Block</small></div></div><div v-if="settingsStore.indexStatus.error" class="error-banner">{{ settingsStore.indexStatus.error }}</div><div class="inline-actions"><button class="button-primary" @click="settingsStore.rebuildIndex('full')">重建全部</button><button class="button-secondary" @click="settingsStore.rebuildIndex('fts')">重建文本索引</button><button class="button-secondary" @click="settingsStore.rebuildIndex('vector')">重建向量索引</button></div></div>
 
@@ -55,7 +122,31 @@ async function testProvider(provider: ProviderConfig) { testResults.value[provid
 
     <div v-else class="panel settings-section"><h2>AI Core 诊断</h2><div v-if="settingsStore.diagnosticsError" class="error-banner">{{ settingsStore.diagnosticsError }}</div><div class="diagnostic-grid"><div class="item-card"><span class="badge" :class="{ success: settingsStore.aiCoreStatus === 'running', error: settingsStore.aiCoreStatus === 'error' }">{{ settingsStore.aiCoreStatus }}</span><h3>Sidecar 状态</h3><p class="subtle">AI Core 不可用时，Markdown 编辑仍可继续使用。</p></div><div class="item-card"><strong>{{ settingsStore.aiCoreAddress }}</strong><h3>开发 API 地址</h3><p class="subtle">正式桌面环境由 Sidecar Manager 动态提供。</p></div></div><div class="inline-actions diagnostic-actions"><button class="button-primary" @click="settingsStore.loadDiagnostics">重新检测</button><button class="button-secondary" @click="settingsStore.restartAiCore">重启 AI Core</button></div></div>
 
-    <div v-if="showProviderForm" class="modal-backdrop" @click.self="showProviderForm = false"><div class="modal"><h2>{{ editingProviderId ? '编辑 Provider' : '新增 Provider' }}</h2><form @submit.prevent="saveProvider"><div class="field"><label>类型</label><select v-model="providerForm.provider_type" class="select"><option value="openai_compatible">OpenAI Compatible</option><option value="openai_chat">OpenAI Chat</option><option value="openai_responses">OpenAI Responses</option><option value="anthropic_messages">Anthropic Messages</option><option value="ollama">Ollama</option></select></div><div class="field"><label>名称</label><input v-model="providerForm.name" class="input" required /></div><div class="field"><label>Base URL</label><input v-model="providerForm.base_url" class="input" placeholder="https://api.example.com/v1" /></div><div class="field"><label>默认模型</label><input v-model="providerForm.default_model" class="input" /></div><div class="field"><label>Credential ID</label><input v-model="providerForm.credential_id" class="input" placeholder="密钥明文由 Stronghold 保存" /><small class="subtle">此处不输入或回显 API Key。</small></div><label class="inline-actions"><input v-model="providerForm.enabled" type="checkbox" /> 启用</label><div class="inline-actions"><button class="button-primary">保存</button><button type="button" class="button-secondary" @click="showProviderForm = false">取消</button></div></form></div></div>
+    <div v-if="showProviderForm" class="modal-backdrop" @click.self="showProviderForm = false">
+      <div class="modal">
+        <h2>{{ editingProviderId ? '编辑 Provider' : '新增 Provider' }}</h2>
+        <form @submit.prevent="saveProvider">
+          <div class="field">
+            <label>提供商预设</label>
+            <select v-model="providerForm.preset_id" class="select" @change="applyProviderPreset">
+              <option value="">自定义</option>
+              <option v-for="preset in providerStore.presets" :key="preset.preset_id" :value="preset.preset_id">{{ preset.name }}</option>
+            </select>
+          </div>
+          <div class="field"><label>接入协议</label><select v-model="providerForm.provider_type" class="select"><option value="openai_compatible">OpenAI Compatible</option><option value="openai_chat">OpenAI Chat</option><option value="openai_responses">OpenAI Responses</option><option value="anthropic_messages">Anthropic Messages</option><option value="ollama">Ollama</option></select></div>
+          <div class="field"><label>名称</label><input v-model="providerForm.name" class="input" required /></div>
+          <div class="field"><label>Base URL</label><input v-model="providerForm.base_url" class="input" placeholder="https://api.example.com/v1" required /></div>
+          <div class="field">
+            <label>默认模型</label>
+            <input v-model="providerForm.default_model" class="input" :list="editingProviderId ? 'provider-model-options' : undefined" placeholder="保存后自动获取，也可以手动输入" />
+            <datalist id="provider-model-options"><option v-for="model in formModels" :key="model.model_id" :value="model.model_id">{{ model.name }}</option></datalist>
+          </div>
+          <div class="field"><label>Credential ID</label><input v-model="providerForm.credential_id" class="input" placeholder="由桌面 Host 注入的凭据标识" /><small class="subtle">此处不输入或回显 API Key，密钥明文由 Stronghold 保存。</small></div>
+          <label class="inline-actions"><input v-model="providerForm.enabled" type="checkbox" /> 启用</label>
+          <div class="inline-actions"><button class="button-primary">保存并获取模型</button><button type="button" class="button-secondary" @click="showProviderForm = false">取消</button></div>
+        </form>
+      </div>
+    </div>
   </section>
 </template>
 
@@ -66,8 +157,9 @@ async function testProvider(provider: ProviderConfig) { testResults.value[provid
 .setting-row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-xl); min-height: 54px; padding: var(--space-sm) 0; border-bottom: 1px solid var(--color-border-subtle); }
 .setting-row small { display: block; color: var(--color-text-tertiary); }.short { width: min(220px, 45%); }
 .section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-lg); }
-.provider-list { display: grid; gap: var(--space-md); }.provider-card { display: flex; align-items: center; justify-content: space-between; gap: var(--space-xl); }.provider-card p, .provider-card .tag-list { margin-top: var(--space-sm); }
+.provider-list { display: grid; gap: var(--space-md); }.provider-card { display: flex; align-items: center; justify-content: space-between; gap: var(--space-xl); }.provider-main { min-width: 0; flex: 1; }.provider-card p, .provider-card .tag-list { margin-top: var(--space-sm); }
+.model-picker { display: flex; align-items: center; gap: var(--space-sm); margin-top: var(--space-md); }.model-picker label { white-space: nowrap; font-weight: 600; }.model-picker .select { width: min(360px, 100%); }.provider-actions { flex-wrap: wrap; justify-content: flex-end; }.error-text { color: var(--color-danger, #d33); }
 .test-result { color: var(--color-info); }.index-summary, .diagnostic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }.index-summary > div { padding: var(--space-lg); border-radius: var(--radius-md); background: var(--color-background-secondary); }.index-summary strong, .index-summary small { display: block; }.index-summary strong { font-size: var(--font-size-3xl); }
 .section-description { margin-top: calc(-1 * var(--space-md)); }.diagnostic-grid { grid-template-columns: repeat(2, 1fr); }.diagnostic-grid h3 { margin: var(--space-md) 0 var(--space-xs); }.diagnostic-actions { margin-top: var(--space-md); }
-@media (max-width: 700px) { .provider-card, .setting-row { align-items: flex-start; flex-direction: column; }.short { width: 100%; }.index-summary, .diagnostic-grid { grid-template-columns: 1fr; } }
+@media (max-width: 700px) { .provider-card, .setting-row, .model-picker { align-items: flex-start; flex-direction: column; }.short, .model-picker .select { width: 100%; }.index-summary, .diagnostic-grid { grid-template-columns: 1fr; }.provider-actions { justify-content: flex-start; } }
 </style>
diff --git a/frontend/src/services/providerService.ts b/frontend/src/services/providerService.ts
index ddaeee1..2e52a20 100644
--- a/frontend/src/services/providerService.ts
+++ b/frontend/src/services/providerService.ts
@@ -1,5 +1,5 @@
 import apiClient from './apiClient'
-import type { ApiModelInfo, ApiProviderConfig, ModelCapability, ModelInfo, OperationResponse, ProviderConfig } from '@/contracts'
+import type { ApiModelInfo, ApiProviderConfig, ApiProviderPreset, ModelCapability, ModelInfo, OperationResponse, ProviderConfig, ProviderPreset } from '@/contracts'
 
 function capabilityMap(capabilities: string[]): Partial<ModelCapability> {
   return Object.fromEntries(capabilities.map((capability) => [capability, true])) as Partial<ModelCapability>
@@ -44,6 +44,11 @@ export async function createProvider(data: Omit<ProviderConfig, 'provider_id'>):
   return toProvider(response)
 }
 
+export async function listProviderPresets(): Promise<ProviderPreset[]> {
+  const response = await apiClient.get<{ items: ApiProviderPreset[] }>('/api/providers/presets')
+  return response.items
+}
+
 export async function updateProvider(providerId: string, data: Partial<ProviderConfig>): Promise<ProviderConfig> {
   const response = await apiClient.patch<ApiProviderConfig>(`/api/providers/${providerId}`, {
     name: data.name,
diff --git a/frontend/src/stores/provider.spec.ts b/frontend/src/stores/provider.spec.ts
new file mode 100644
index 0000000..95cb3ad
--- /dev/null
+++ b/frontend/src/stores/provider.spec.ts
@@ -0,0 +1,79 @@
+// @vitest-environment happy-dom
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { createPinia, setActivePinia } from 'pinia'
+import type { ProviderConfig, ProviderPreset } from '@/contracts'
+
+vi.mock('@/services/providerService', () => ({
+  mockProviders: [],
+  mockModels: {},
+  listProviders: vi.fn(),
+  listProviderPresets: vi.fn(),
+  listModels: vi.fn(),
+  createProvider: vi.fn(),
+  updateProvider: vi.fn(),
+  deleteProvider: vi.fn(),
+  testProvider: vi.fn(),
+}))
+
+import { useProviderStore } from './provider'
+import { listModels, listProviderPresets, listProviders } from '@/services/providerService'
+
+const providers: ProviderConfig[] = [
+  {
+    provider_id: 'openai',
+    provider_type: 'openai_chat',
+    name: 'OpenAI',
+    base_url: 'https://api.openai.com/v1',
+    default_model: '',
+    enabled: true,
+    capabilities: { chat: true },
+    has_credential: true,
+  },
+]
+
+const presets: ProviderPreset[] = [
+  {
+    preset_id: 'deepseek',
+    name: 'DeepSeek',
+    provider_type: 'openai_compatible',
+    base_url: 'https://api.deepseek.com',
+    requires_credential: true,
+  },
+]
+
+beforeEach(() => {
+  setActivePinia(createPinia())
+  vi.clearAllMocks()
+  vi.mocked(listProviders).mockResolvedValue(providers)
+  vi.mocked(listProviderPresets).mockResolvedValue(presets)
+})
+
+describe('provider store model discovery', () => {
+  it('loads provider presets and automatically refreshes enabled providers', async () => {
+    vi.mocked(listModels).mockResolvedValue([
+      { model_id: 'model-z', name: 'Zulu', capabilities: { chat: true } },
+      { model_id: 'model-a', name: 'Alpha', capabilities: { chat: true } },
+      { model_id: 'model-a', name: 'Alpha duplicate', capabilities: { chat: true } },
+    ])
+    const store = useProviderStore()
+
+    await store.loadProviders()
+    await store.loadPresets()
+    await store.refreshEnabledModels()
+
+    expect(store.presets[0].preset_id).toBe('deepseek')
+    expect(listModels).toHaveBeenCalledWith('openai')
+    expect(store.modelsByProvider.openai.map((model) => model.model_id)).toEqual(['model-a', 'model-z'])
+    expect(store.modelErrorsByProvider.openai).toBeUndefined()
+  })
+
+  it('records a provider-specific error when model discovery fails', async () => {
+    vi.mocked(listModels).mockRejectedValue(new Error('认证失败'))
+    const store = useProviderStore()
+
+    await expect(store.loadModels('openai')).rejects.toThrow('认证失败')
+
+    expect(store.modelLoadingByProvider.openai).toBe(false)
+    expect(store.modelErrorsByProvider.openai).toBe('认证失败')
+  })
+})
diff --git a/frontend/src/stores/provider.ts b/frontend/src/stores/provider.ts
index f644a45..999920c 100644
--- a/frontend/src/stores/provider.ts
+++ b/frontend/src/stores/provider.ts
@@ -1,11 +1,14 @@
 import { defineStore } from 'pinia'
 import { ref, computed } from 'vue'
-import type { ProviderConfig, ModelInfo } from '@/contracts'
-import { createProvider, deleteProvider as deleteProviderRequest, listModels, listProviders, mockProviders, mockModels, testProvider as testProviderRequest, updateProvider as updateProviderRequest } from '@/services/providerService'
+import type { ProviderConfig, ModelInfo, ProviderPreset } from '@/contracts'
+import { createProvider, deleteProvider as deleteProviderRequest, listModels, listProviderPresets, listProviders, mockProviders, mockModels, testProvider as testProviderRequest, updateProvider as updateProviderRequest } from '@/services/providerService'
 
 export const useProviderStore = defineStore('provider', () => {
   const providers = ref<ProviderConfig[]>(mockProviders)
+  const presets = ref<ProviderPreset[]>([])
   const modelsByProvider = ref<Record<string, ModelInfo[]>>(mockModels)
+  const modelLoadingByProvider = ref<Record<string, boolean>>({})
+  const modelErrorsByProvider = ref<Record<string, string>>({})
   const defaultProviderId = ref('mock')
   const isLoading = ref(false)
   const error = ref<string | null>(null)
@@ -27,8 +30,36 @@ export const useProviderStore = defineStore('provider', () => {
     }
   }
 
-  async function loadModels(providerId: string) {
-    modelsByProvider.value[providerId] = await listModels(providerId)
+  async function loadPresets() {
+    try {
+      presets.value = await listProviderPresets()
+    } catch (reason) {
+      error.value = reason instanceof Error ? reason.message : 'Provider 预设加载失败'
+    }
+  }
+
+  async function loadModels(providerId: string): Promise<ModelInfo[]> {
+    modelLoadingByProvider.value[providerId] = true
+    delete modelErrorsByProvider.value[providerId]
+    try {
+      const models = await listModels(providerId)
+      const uniqueModels = [...new Map(models.map((model) => [model.model_id, model])).values()]
+        .sort((left, right) => left.name.localeCompare(right.name))
+      modelsByProvider.value[providerId] = uniqueModels
+      return uniqueModels
+    } catch (reason) {
+      const message = reason instanceof Error ? reason.message : '模型列表获取失败'
+      modelErrorsByProvider.value[providerId] = message
+      throw reason
+    } finally {
+      modelLoadingByProvider.value[providerId] = false
+    }
+  }
+
+  async function refreshEnabledModels() {
+    await Promise.allSettled(
+      providers.value.filter((provider) => provider.enabled).map((provider) => loadModels(provider.provider_id))
+    )
   }
 
   async function addProvider(data: Omit<ProviderConfig, 'provider_id'>) {
@@ -41,6 +72,7 @@ export const useProviderStore = defineStore('provider', () => {
     const updated = await updateProviderRequest(providerId, data)
     const index = providers.value.findIndex((provider) => provider.provider_id === providerId)
     if (index >= 0) providers.value[index] = updated
+    return updated
   }
 
   async function deleteProvider(providerId: string) {
@@ -61,14 +93,19 @@ export const useProviderStore = defineStore('provider', () => {
 
   return {
     providers,
+    presets,
     modelsByProvider,
+    modelLoadingByProvider,
+    modelErrorsByProvider,
     defaultProviderId,
     enabledProviders,
     defaultProvider,
     isLoading,
     error,
     loadProviders,
+    loadPresets,
     loadModels,
+    refreshEnabledModels,
     addProvider,
     updateProvider,
     deleteProvider,