v0.3.0: 模型与设置（目录/API key/模型切换/系统提示词）

apps/desktop/scripts/smoke-models.mjs

@@ -0,0 +1,65 @@
+/**
+ * v0.3.0 冒烟：模型目录 / API key login-logout / setModel / 系统提示词
+ * 不打真实 LLM 请求；key 用假值（仅验证凭据写入与模型切换逻辑）。
+ */
+import { createAgentSessionServices, createAgentSessionRuntime, createAgentSessionFromServices, getAgentDir, SessionManager } from '@earendil-works/pi-coding-agent'
+import { homedir } from 'node:os'
+import { readFileSync, writeFileSync, mkdtempSync } from 'node:fs'
+import { join } from 'node:path'
+import { tmpdir } from 'node:os'
+
+const cwd = homedir()
+const agentDir = getAgentDir()
+
+const services = await createAgentSessionServices({ cwd, agentDir })
+const factory = async ({ cwd: nc, agentDir: na, sessionManager }) => {
+  const svc = nc === services.cwd && na === services.agentDir ? services : await createAgentSessionServices({ cwd: nc, agentDir: na })
+  const result = await createAgentSessionFromServices({ services: svc, sessionManager })
+  return { ...result, services: svc, diagnostics: svc.diagnostics }
+}
+const runtime = await createAgentSessionRuntime(factory, { cwd, agentDir, sessionManager: SessionManager.continueRecent(cwd) })
+const mr = runtime.session.modelRuntime
+
+// 1) 模型目录
+const providers = mr.getProviders()
+console.log('[smoke3] providers:', providers.map((p) => p.id).join(', '))
+const anthropic = providers.find((p) => p.id === 'anthropic')
+if (anthropic) {
+  const models = mr.getModels('anthropic')
+  console.log('[smoke3] anthropic models: %d (first: %s)', models.length, models[0]?.id)
+
+  // 2) login（假 key）→ listCredentials
+  const before = await mr.listCredentials()
+  await mr.login('anthropic', 'api_key', { prompt: async () => 'sk-smoke-fake-key', notify: async () => undefined })
+  const after = await mr.listCredentials()
+  console.log('[smoke3] credentials before=%d after=%d (anthropic=%s)', before.length, after.length, after.some((c) => c.providerId === 'anthropic' && c.type === 'api_key'))
+
+  // auth.json 应包含 anthropic 条目
+  const auth = JSON.parse(readFileSync(join(agentDir, 'auth.json'), 'utf8'))
+  console.log('[smoke3] auth.json has anthropic:', Boolean(auth.anthropic))
+
+  // 3) setModel（有凭据时允许）
+  const target = models[0]
+  await runtime.session.setModel(target, { persist: false })
+  console.log('[smoke3] setModel ok -> %s/%s', runtime.session.model?.provider, runtime.session.model?.id)
+
+  // 4) logout
+  await mr.logout('anthropic')
+  const finalCreds = await mr.listCredentials()
+  console.log('[smoke3] after logout, anthropic credential present:', finalCreds.some((c) => c.providerId === 'anthropic'))
+} else {
+  console.log('[smoke3] anthropic not found in providers, skip key tests')
+}
+
+// 5) 系统提示词 override（独立 services，用 resourceLoaderOptions.systemPrompt）
+const tmp = mkdtempSync(join(tmpdir(), 'aso-smoke-'))
+const promptText = '你是冒烟测试助手。'
+const svc2 = await createAgentSessionServices({ cwd, agentDir, resourceLoaderOptions: { systemPrompt: promptText } })
+console.log('[smoke3] systemPrompt applied:', svc2.resourceLoader ? 'services-created' : 'fail')
+const rt2 = await createAgentSessionFromServices({ services: svc2, sessionManager: SessionManager.inMemory(cwd) })
+console.log('[smoke3] session systemPrompt startsWith expected:', rt2.session.systemPrompt.startsWith(promptText.slice(0, 8)))
+
+await runtime.dispose()
+writeFileSync(join(tmp, 'done'), '')
+console.log('[smoke3] done')
+process.exit(0)

apps/desktop/src/main/ipc.ts

@@ -72,6 +72,39 @@ export function registerIpc(): AgentService {
     })
   })
 
+  // ---- 模型与凭据 ----
+  const pass = (fn: () => Promise<unknown>): Promise<unknown> =>
+    fn().catch((err: unknown) => {
+      throw new Error(err instanceof Error ? err.message : String(err))
+    })
+
+  ipcMain.handle('models:catalog', () => pass(() => service.getModelCatalog()))
+
+  ipcMain.handle('models:set', (_event, providerId: unknown, modelId: unknown) => {
+    if (typeof providerId !== 'string' || typeof modelId !== 'string') throw new Error('invalid model')
+    return pass(() => service.setModel(providerId, modelId))
+  })
+
+  ipcMain.handle('auth:setKey', (_event, providerId: unknown, apiKey: unknown) => {
+    if (typeof providerId !== 'string' || typeof apiKey !== 'string' || !apiKey.trim()) {
+      throw new Error('invalid api key')
+    }
+    return pass(() => service.setApiKey(providerId, apiKey.trim()))
+  })
+
+  ipcMain.handle('auth:logout', (_event, providerId: unknown) => {
+    if (typeof providerId !== 'string') throw new Error('invalid provider')
+    return pass(() => service.logoutProvider(providerId))
+  })
+
+  // ---- 应用设置 ----
+  ipcMain.handle('settings:get', () => service.getSettings())
+
+  ipcMain.handle('settings:setPrompt', (_event, text: unknown) => {
+    if (typeof text !== 'string') throw new Error('invalid prompt')
+    return pass(() => service.setSystemPrompt(text))
+  })
+
   ipcMain.handle('app:versions', () => ({
     app: process.env.npm_package_version ?? '0.0.0',
     electron: process.versions.electron,

apps/desktop/src/main/pi/agent-service.ts

@@ -1,4 +1,6 @@
 import { app, shell } from 'electron'
+import { readFileSync, writeFileSync } from 'node:fs'
+import { join } from 'node:path'
 import {
   createAgentSessionRuntime,
   createAgentSessionServices,
@@ -11,7 +13,15 @@ import {
   type CreateAgentSessionRuntimeFactory,
   type SessionInfo
 } from '@earendil-works/pi-coding-agent'
-import type { AgentUiEvent, ModelInfo, SessionMeta, SessionState, SessionStatsInfo } from '@shared/types'
+import type {
+  AgentUiEvent,
+  AppSettings,
+  ModelCatalog,
+  ModelInfo,
+  SessionMeta,
+  SessionState,
+  SessionStatsInfo
+} from '@shared/types'
 
 /** 增量事件合批的刷新间隔（ms），参考 pi-web 的 60ms 快照节流经验取略低值 */
 const DELTA_FLUSH_MS = 40
@@ -30,11 +40,35 @@ export class AgentService {
   private flushTimer: NodeJS.Timeout | null = null
   private attached: AgentSession | null = null
   private unsubscribeAttached: (() => void) | null = null
+  private settings: AppSettings = { systemPrompt: '' }
 
   private get cwd(): string {
     return app.getPath('home')
   }
 
+  private get settingsFile(): string {
+    return join(app.getPath('userData'), 'aso-settings.json')
+  }
+
+  private loadSettings(): AppSettings {
+    try {
+      const raw = JSON.parse(readFileSync(this.settingsFile, 'utf8')) as Partial<AppSettings>
+      return {
+        systemPrompt: typeof raw.systemPrompt === 'string' ? raw.systemPrompt : ''
+      }
+    } catch {
+      return { systemPrompt: '' }
+    }
+  }
+
+  private saveSettings(): void {
+    try {
+      writeFileSync(this.settingsFile, JSON.stringify(this.settings, null, 2), 'utf8')
+    } catch (err) {
+      console.error('[agent-service] save settings failed:', err)
+    }
+  }
+
   onEvent(fn: (event: AgentUiEvent) => void): () => void {
     this.listeners.add(fn)
     return () => this.listeners.delete(fn)
@@ -75,7 +109,14 @@ export class AgentService {
   private async create(): Promise<AgentSessionRuntime> {
     const cwd = this.cwd
     const agentDir = getAgentDir()
-    const initialServices = await createAgentSessionServices({ cwd, agentDir })
+    this.settings = this.loadSettings()
+    const initialServices = await createAgentSessionServices({
+      cwd,
+      agentDir,
+      resourceLoaderOptions: this.settings.systemPrompt.trim()
+        ? { systemPrompt: this.settings.systemPrompt }
+        : undefined
+    })
 
     // 每次切换/新建时由 runtime 调用；cwd 变化时重建服务，否则复用
     const factory: CreateAgentSessionRuntimeFactory = async ({
@@ -330,6 +371,97 @@ export class AgentService {
       await runtime.newSession()
     }
   }
+
+  // ---- 模型与凭据 ----
+
+  async getModelCatalog(): Promise<ModelCatalog> {
+    const runtime = await this.getRuntime()
+    const mr = runtime.session.modelRuntime
+    const credentials = await mr.listCredentials()
+    const credSet = new Set(credentials.map((c) => `${c.providerId}:${c.type}`))
+    const providers = mr
+      .getProviders()
+      .map((p) => {
+        const pid = String(p.id ?? '')
+        return {
+          id: pid,
+          name: String(p.name ?? pid),
+          hasApiKey: credSet.has(`${pid}:api_key`),
+          isOAuth: credSet.has(`${pid}:oauth`),
+          models: mr
+            .getModels(pid)
+            .map((m) => ({
+              id: String(m.id ?? ''),
+              name: String(m.name ?? m.id ?? ''),
+              contextWindow: Number(m.contextWindow ?? 0),
+              reasoning: Boolean(m.reasoning)
+            }))
+        }
+      })
+      // 已配置凭据的排前面，其余按名称排序
+      .sort((a, b) => {
+        const av = a.hasApiKey || a.isOAuth ? 0 : 1
+        const bv = b.hasApiKey || b.isOAuth ? 0 : 1
+        return av - bv || a.name.localeCompare(b.name)
+      })
+    return { providers }
+  }
+
+  async setApiKey(providerId: string, apiKey: string): Promise<void> {
+    const runtime = await this.getRuntime()
+    const mr = runtime.session.modelRuntime
+    // login 走凭据存储的 modify（持久化到 ~/.pi/agent/auth.json，与 pi CLI 共享）
+    await mr.login(providerId, 'api_key', {
+      prompt: async () => apiKey,
+      notify: async () => undefined
+    })
+    this.emit({ type: 'state', state: this.buildState(runtime.session) })
+  }
+
+  async logoutProvider(providerId: string): Promise<void> {
+    const runtime = await this.getRuntime()
+    await runtime.session.modelRuntime.logout(providerId)
+    this.emit({ type: 'state', state: this.buildState(runtime.session) })
+  }
+
+  async setModel(providerId: string, modelId: string): Promise<void> {
+    const runtime = await this.getRuntime()
+    const mr = runtime.session.modelRuntime
+    const model = mr.getModel(providerId, modelId)
+    if (!model) {
+      throw new Error(`未知模型: ${providerId}/${modelId}`)
+    }
+    await runtime.session.setModel(model, { persist: true })
+    this.emit({ type: 'state', state: this.buildState(runtime.session) })
+  }
+
+  // ---- 应用设置 ----
+
+  getSettings(): AppSettings {
+    return { ...this.settings }
+  }
+
+  /** 更新系统提示词后重建运行时（continueRecent 重新挂载当前最近会话，历史保留） */
+  async setSystemPrompt(text: string): Promise<void> {
+    this.settings = { systemPrompt: text }
+    this.saveSettings()
+    await this.rebuildRuntime()
+  }
+
+  private async rebuildRuntime(): Promise<void> {
+    const old = this.runtime
+    this.runtime = null
+    this.initPromise = null
+    this.unsubscribeAttached?.()
+    this.unsubscribeAttached = null
+    this.attached = null
+    if (old) {
+      await old.dispose().catch((err: unknown) => {
+        console.error('[agent-service] runtime dispose error:', err)
+      })
+    }
+    await this.ensureReady()
+  }
 }
 
 function toSessionMeta(info: SessionInfo): SessionMeta {

apps/desktop/src/preload/index.ts

@@ -1,5 +1,5 @@
 import { contextBridge, ipcRenderer } from 'electron'
-import type { AgentUiEvent, SessionMeta, SessionState } from '@shared/types'
+import type { AgentUiEvent, AppSettings, ModelCatalog, SessionMeta, SessionState } from '@shared/types'
 
 const api = {
   send: (text: string): Promise<void> => ipcRenderer.invoke('agent:send', text),
@@ -13,6 +13,14 @@ const api = {
   openSession: (path: string): Promise<void> => ipcRenderer.invoke('sessions:open', path),
   renameSession: (name: string): Promise<void> => ipcRenderer.invoke('sessions:rename', name),
   deleteSession: (path: string): Promise<void> => ipcRenderer.invoke('sessions:delete', path),
+  getModelCatalog: (): Promise<ModelCatalog> => ipcRenderer.invoke('models:catalog'),
+  setModel: (providerId: string, modelId: string): Promise<void> =>
+    ipcRenderer.invoke('models:set', providerId, modelId),
+  setApiKey: (providerId: string, apiKey: string): Promise<void> =>
+    ipcRenderer.invoke('auth:setKey', providerId, apiKey),
+  logoutProvider: (providerId: string): Promise<void> => ipcRenderer.invoke('auth:logout', providerId),
+  getSettings: (): Promise<AppSettings> => ipcRenderer.invoke('settings:get'),
+  setSystemPrompt: (text: string): Promise<void> => ipcRenderer.invoke('settings:setPrompt', text),
   onEvent: (callback: (event: AgentUiEvent) => void): (() => void) => {
     const listener = (_e: Electron.IpcRendererEvent, event: AgentUiEvent): void => callback(event)
     ipcRenderer.on('agent:event', listener)

apps/desktop/src/renderer/src/App.tsx

@@ -1,13 +1,15 @@
-import { useRef } from 'react'
+import { useRef, useState } from 'react'
 import type { JSX } from 'react'
 import { useAgent } from './hooks/useAgent'
 import { Sidebar } from './components/Sidebar'
 import { ChatView } from './components/ChatView'
 import { Composer } from './components/Composer'
+import { SettingsModal } from './components/SettingsModal'
 
 export default function App(): JSX.Element {
   const { state, sessions, send, stop, clearError, newSession, openSession, renameSession, deleteSession } = useAgent()
   const prefillRef = useRef<string | null>(null)
+  const [settingsOpen, setSettingsOpen] = useState(false)
 
   const handlePickSuggestion = (text: string): void => {
     prefillRef.current = text
@@ -26,6 +28,7 @@ export default function App(): JSX.Element {
         onOpenSession={openSession}
         onRenameSession={renameSession}
         onDeleteSession={deleteSession}
+        onOpenSettings={() => setSettingsOpen(true)}
       />
       <main className="flex min-w-0 flex-1 flex-col">
         <ChatView
@@ -47,6 +50,7 @@ export default function App(): JSX.Element {
           prefillRef={prefillRef}
         />
       </main>
+      <SettingsModal open={settingsOpen} sessionState={state.sessionState} onClose={() => setSettingsOpen(false)} />
     </div>
   )
 }

apps/desktop/src/renderer/src/components/SettingsModal.tsx

@@ -0,0 +1,309 @@
+import { useEffect, useMemo, useState } from 'react'
+import type { JSX } from 'react'
+import { Check, Cpu, KeyRound, LogOut, Search, Sparkles, X } from 'lucide-react'
+import type { ModelCatalog, ProviderCatalogEntry, SessionState } from '@shared/types'
+
+type Tab = 'model' | 'prompt'
+
+function ProviderBadge({ provider }: { provider: ProviderCatalogEntry }): JSX.Element {
+  if (provider.hasApiKey) {
+    return <span className="rounded-full bg-emerald-950/70 px-1.5 py-0.5 text-[10px] text-emerald-300">API Key</span>
+  }
+  if (provider.isOAuth) {
+    return <span className="rounded-full bg-sky-950/70 px-1.5 py-0.5 text-[10px] text-sky-300">OAuth</span>
+  }
+  return <span className="rounded-full bg-zinc-800 px-1.5 py-0.5 text-[10px] text-zinc-500">未配置</span>
+}
+
+function formatContext(n: number): string {
+  if (n >= 1000000) return `${Math.round(n / 1000000)}M`
+  if (n >= 1000) return `${Math.round(n / 1000)}K`
+  return String(n)
+}
+
+export function SettingsModal({
+  open,
+  sessionState,
+  onClose
+}: {
+  open: boolean
+  sessionState: SessionState | null
+  onClose: () => void
+}): JSX.Element | null {
+  const [tab, setTab] = useState<Tab>('model')
+  const [catalog, setCatalog] = useState<ModelCatalog | null>(null)
+  const [loading, setLoading] = useState(false)
+  const [search, setSearch] = useState('')
+  const [keyProvider, setKeyProvider] = useState<string | null>(null)
+  const [keyValue, setKeyValue] = useState('')
+  const [prompt, setPrompt] = useState('')
+  const [promptDirty, setPromptDirty] = useState(false)
+  const [busy, setBusy] = useState(false)
+  const [notice, setNotice] = useState<{ kind: 'ok' | 'err'; text: string } | null>(null)
+
+  const refreshCatalog = (): void => {
+    setLoading(true)
+    window.api
+      .getModelCatalog()
+      .then(setCatalog)
+      .catch((err: unknown) =>
+        setNotice({ kind: 'err', text: err instanceof Error ? err.message : String(err) })
+      )
+      .finally(() => setLoading(false))
+  }
+
+  useEffect(() => {
+    if (!open) return
+    refreshCatalog()
+    void window.api
+      .getSettings()
+      .then((s) => {
+        setPrompt(s.systemPrompt)
+        setPromptDirty(false)
+      })
+      .catch(() => undefined)
+    setNotice(null)
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [open])
+
+  const currentProvider = sessionState?.model?.provider
+  const currentModel = sessionState?.model?.id
+
+  const filtered = useMemo(() => {
+    if (!catalog) return []
+    const q = search.trim().toLowerCase()
+    return catalog.providers
+      .map((p) => ({
+        ...p,
+        models: q
+          ? p.models.filter(
+              (m) => m.id.toLowerCase().includes(q) || m.name.toLowerCase().includes(q) || p.name.toLowerCase().includes(q)
+            )
+          : p.models
+      }))
+      .filter((p) => p.models.length > 0 || (!q && p.models.length === 0))
+  }, [catalog, search])
+
+  const run = (label: string, fn: () => Promise<void>, after?: () => void): void => {
+    setBusy(true)
+    setNotice(null)
+    fn()
+      .then(() => {
+        setNotice({ kind: 'ok', text: label })
+        after?.()
+      })
+      .catch((err: unknown) => setNotice({ kind: 'err', text: err instanceof Error ? err.message : String(err) }))
+      .finally(() => setBusy(false))
+  }
+
+  if (!open) return null
+
+  return (
+    <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/60 backdrop-blur-sm" onClick={onClose}>
+      <div
+        className="flex h-[600px] w-[720px] max-w-[92vw] flex-col overflow-hidden rounded-2xl border border-zinc-800 bg-zinc-950 shadow-2xl"
+        onClick={(e) => e.stopPropagation()}
+      >
+        {/* 头部 */}
+        <div className="flex items-center gap-1 border-b border-zinc-800/80 px-5 py-3">
+          <div className="mr-3 text-[14px] font-medium text-zinc-100">设置</div>
+          {(
+            [
+              ['model', '模型与密钥', Cpu],
+              ['prompt', '系统提示词', Sparkles]
+            ] as const
+          ).map(([id, label, Icon]) => (
+            <button
+              key={id}
+              type="button"
+              onClick={() => setTab(id)}
+              className={`flex items-center gap-1.5 rounded-lg px-3 py-1.5 text-[12.5px] transition-colors ${
+                tab === id ? 'bg-zinc-800 text-zinc-100' : 'text-zinc-500 hover:bg-zinc-800/50 hover:text-zinc-300'
+              }`}
+            >
+              <Icon size={13} />
+              {label}
+            </button>
+          ))}
+          <button
+            type="button"
+            onClick={onClose}
+            className="ml-auto rounded-lg p-1.5 text-zinc-500 transition-colors hover:bg-zinc-800 hover:text-zinc-200"
+          >
+            <X size={16} />
+          </button>
+        </div>
+
+        {/* 内容 */}
+        {tab === 'model' ? (
+          <div className="flex min-h-0 flex-1 flex-col">
+            <div className="flex items-center gap-2 px-5 pb-2 pt-3">
+              <div className="relative flex-1">
+                <Search size={13} className="absolute left-2.5 top-1/2 -translate-y-1/2 text-zinc-600" />
+                <input
+                  value={search}
+                  onChange={(e) => setSearch(e.target.value)}
+                  placeholder="搜索模型 / 服务商…"
+                  className="w-full rounded-lg border border-zinc-800 bg-zinc-900/60 py-1.5 pl-8 pr-3 text-[12.5px] text-zinc-200 outline-none placeholder:text-zinc-600 focus:border-zinc-700"
+                />
+              </div>
+              {loading && <span className="text-[11px] text-zinc-600">加载中…</span>}
+            </div>
+            <div className="min-h-0 flex-1 space-y-4 overflow-y-auto px-5 pb-4">
+              {filtered.map((provider) => (
+                <div key={provider.id}>
+                  <div className="mb-1.5 flex items-center gap-2">
+                    <span className="text-[12px] font-medium text-zinc-300">{provider.name}</span>
+                    <ProviderBadge provider={provider} />
+                    <button
+                      type="button"
+                      onClick={() => {
+                        setKeyProvider(provider.id)
+                        setKeyValue('')
+                      }}
+                      className="ml-auto flex items-center gap-1 rounded-md px-1.5 py-0.5 text-[11px] text-zinc-500 transition-colors hover:bg-zinc-800 hover:text-zinc-300"
+                    >
+                      <KeyRound size={11} />
+                      {provider.hasApiKey ? '更换密钥' : '设置密钥'}
+                    </button>
+                    {(provider.hasApiKey || provider.isOAuth) && (
+                      <button
+                        type="button"
+                        disabled={busy}
+                        onClick={() =>
+                          run('已移除凭据', () => window.api.logoutProvider(provider.id), refreshCatalog)
+                        }
+                        className="flex items-center gap-1 rounded-md px-1.5 py-0.5 text-[11px] text-zinc-500 transition-colors hover:bg-red-950/60 hover:text-red-300"
+                      >
+                        <LogOut size={11} />
+                        移除
+                      </button>
+                    )}
+                  </div>
+
+                  {keyProvider === provider.id && (
+                    <div className="mb-2 flex items-center gap-2 rounded-lg border border-zinc-800 bg-zinc-900/50 p-2">
+                      <input
+                        type="password"
+                        value={keyValue}
+                        onChange={(e) => setKeyValue(e.target.value)}
+                        placeholder="输入 API Key（保存到 ~/.pi/agent/auth.json，与 pi CLI 共享）"
+                        className="flex-1 rounded-md border border-zinc-800 bg-zinc-950 px-2.5 py-1.5 font-mono text-[12px] text-zinc-200 outline-none focus:border-emerald-800"
+                      />
+                      <button
+                        type="button"
+                        disabled={busy || !keyValue.trim()}
+                        onClick={() =>
+                          run('密钥已保存', () => window.api.setApiKey(provider.id, keyValue.trim()), () => {
+                            setKeyProvider(null)
+                            setKeyValue('')
+                            refreshCatalog()
+                          })
+                        }
+                        className="flex items-center gap-1 rounded-md bg-emerald-600 px-2.5 py-1.5 text-[12px] text-white transition-colors hover:bg-emerald-500 disabled:opacity-50"
+                      >
+                        <Check size={12} />
+                        保存
+                      </button>
+                      <button
+                        type="button"
+                        onClick={() => {
+                          setKeyProvider(null)
+                          setKeyValue('')
+                        }}
+                        className="rounded-md px-2 py-1.5 text-[12px] text-zinc-500 hover:bg-zinc-800"
+                      >
+                        取消
+                      </button>
+                    </div>
+                  )}
+
+                  <div className="grid grid-cols-1 gap-1">
+                    {provider.models.map((m) => {
+                      const selected = provider.id === currentProvider && m.id === currentModel
+                      return (
+                        <button
+                          key={m.id}
+                          type="button"
+                          disabled={busy}
+                          onClick={() => run(`已切换到 ${m.name}`, () => window.api.setModel(provider.id, m.id))}
+                          className={`flex items-center gap-2 rounded-lg px-2.5 py-1.5 text-left transition-colors ${
+                            selected ? 'bg-emerald-950/50 ring-1 ring-emerald-900/60' : 'hover:bg-zinc-800/50'
+                          }`}
+                        >
+                          {selected ? (
+                            <Check size={13} className="shrink-0 text-emerald-400" />
+                          ) : (
+                            <span className="h-[13px] w-[13px] shrink-0 rounded-full border border-zinc-700" />
+                          )}
+                          <span className={`text-[12.5px] ${selected ? 'text-emerald-100' : 'text-zinc-300'}`}>
+                            {m.name}
+                          </span>
+                          <span className="font-mono text-[10.5px] text-zinc-600">{m.id}</span>
+                          <span className="ml-auto flex items-center gap-2 text-[10.5px] text-zinc-600">
+                            {m.reasoning && <span>推理</span>}
+                            <span>{formatContext(m.contextWindow)} ctx</span>
+                          </span>
+                        </button>
+                      )
+                    })}
+                    {provider.models.length === 0 && (
+                      <div className="px-2.5 py-2 text-[11.5px] text-zinc-600">配置密钥后显示可用模型</div>
+                    )}
+                  </div>
+                </div>
+              ))}
+              {!loading && filtered.length === 0 && (
+                <div className="py-10 text-center text-[12.5px] text-zinc-600">没有匹配的模型</div>
+              )}
+            </div>
+          </div>
+        ) : (
+          <div className="flex min-h-0 flex-1 flex-col px-5 py-4">
+            <div className="mb-2 text-[12px] leading-5 text-zinc-500">
+              覆盖 pi 默认系统提示词。留空使用默认（面向编码的提示词）。保存后运行时重建，当前最近会话的历史会保留。
+            </div>
+            <textarea
+              value={prompt}
+              onChange={(e) => {
+                setPrompt(e.target.value)
+                setPromptDirty(true)
+              }}
+              spellCheck={false}
+              placeholder={'例如：你是店铺运营助手，负责热点词分析、商品文案生成与上架流程编排…'}
+              className="min-h-0 flex-1 resize-none rounded-xl border border-zinc-800 bg-zinc-900/60 p-3.5 font-mono text-[12.5px] leading-6 text-zinc-200 outline-none placeholder:text-zinc-700 focus:border-zinc-700"
+            />
+            <div className="mt-3 flex items-center justify-end">
+              <button
+                type="button"
+                disabled={busy || !promptDirty}
+                onClick={() =>
+                  run('系统提示词已保存，运行时已重建', () => window.api.setSystemPrompt(prompt), () =>
+                    setPromptDirty(false)
+                  )
+                }
+                className="flex items-center gap-1.5 rounded-lg bg-emerald-600 px-3.5 py-1.5 text-[12.5px] text-white transition-colors hover:bg-emerald-500 disabled:cursor-not-allowed disabled:opacity-50"
+              >
+                <Check size={13} />
+                保存并应用
+              </button>
+            </div>
+          </div>
+        )}
+
+        {/* 通知条 */}
+        {notice && (
+          <div
+            className={`border-t px-5 py-2 text-[12px] ${
+              notice.kind === 'ok'
+                ? 'border-emerald-900/50 bg-emerald-950/40 text-emerald-300'
+                : 'border-red-900/50 bg-red-950/40 text-red-300'
+            }`}
+          >
+            {notice.text}
+          </div>
+        )}
+      </div>
+    </div>
+  )
+}

apps/desktop/src/renderer/src/components/Sidebar.tsx

@@ -1,6 +1,6 @@
 import { useEffect, useRef, useState } from 'react'
 import type { JSX } from 'react'
-import { Check, Cpu, MessageSquare, Pencil, Store, Trash2, X } from 'lucide-react'
+import { Check, Cpu, MessageSquare, Pencil, Settings, Store, Trash2, X } from 'lucide-react'
 import type { SessionMeta, SessionState, SessionStatsInfo } from '@shared/types'
 
 interface VersionInfo {
@@ -105,7 +105,8 @@ export function Sidebar({
   onNewSession,
   onOpenSession,
   onRenameSession,
-  onDeleteSession
+  onDeleteSession,
+  onOpenSettings
 }: {
   sessionState: SessionState | null
   stats: SessionStatsInfo | null
@@ -115,6 +116,7 @@ export function Sidebar({
   onOpenSession: (path: string) => void
   onRenameSession: (name: string) => void
   onDeleteSession: (path: string) => void
+  onOpenSettings: () => void
 }): JSX.Element {
   const [versions, setVersions] = useState<VersionInfo | null>(null)
   const [renaming, setRenaming] = useState(false)
@@ -293,6 +295,14 @@ export function Sidebar({
             <div className="text-[10.5px] text-zinc-600">{sessionState?.model ? `${sessionState.model.provider}` : '—'}</div>
           </div>
           <span className={`h-1.5 w-1.5 shrink-0 rounded-full ${connected ? 'bg-emerald-400' : 'bg-zinc-600'}`} />
+          <button
+            type="button"
+            onClick={onOpenSettings}
+            title="设置（模型 / 密钥 / 系统提示词）"
+            className="shrink-0 rounded-md p-1 text-zinc-500 transition-colors hover:bg-zinc-800 hover:text-zinc-200"
+          >
+            <Settings size={13} />
+          </button>
         </div>
         {stats && (
           <div className="mt-2.5 flex items-center justify-between text-[10.5px] text-zinc-600">

apps/desktop/src/renderer/src/hooks/useAgent.ts

@@ -123,6 +123,8 @@ function reducer(state: AgentUiState, action: Action): AgentUiState {
   switch (event.type) {
     case 'session_ready':
       return { ...state, ready: true, sessionState: event.state }
+    case 'state':
+      return { ...state, ready: true, sessionState: event.state }
     case 'session_error':
       return { ...state, sessionError: event.message }
     case 'session_switched':

apps/desktop/src/renderer/src/lib/api.ts

@@ -1,6 +1,14 @@
-import type { AgentUiEvent, ModelInfo, SessionMeta, SessionState, SessionStatsInfo } from '@shared/types'
+import type {
+  AgentUiEvent,
+  AppSettings,
+  ModelCatalog,
+  ModelInfo,
+  SessionMeta,
+  SessionState,
+  SessionStatsInfo
+} from '@shared/types'
 
-export type { AgentUiEvent, ModelInfo, SessionMeta, SessionState, SessionStatsInfo }
+export type { AgentUiEvent, AppSettings, ModelCatalog, ModelInfo, SessionMeta, SessionState, SessionStatsInfo }
 
 declare global {
   interface Window {
@@ -15,6 +23,12 @@ declare global {
       openSession: (path: string) => Promise<void>
       renameSession: (name: string) => Promise<void>
       deleteSession: (path: string) => Promise<void>
+      getModelCatalog: () => Promise<ModelCatalog>
+      setModel: (providerId: string, modelId: string) => Promise<void>
+      setApiKey: (providerId: string, apiKey: string) => Promise<void>
+      logoutProvider: (providerId: string) => Promise<void>
+      getSettings: () => Promise<AppSettings>
+      setSystemPrompt: (text: string) => Promise<void>
       onEvent: (callback: (event: AgentUiEvent) => void) => () => void
     }
   }

apps/desktop/src/shared/types.ts

@@ -35,6 +35,34 @@ export interface SessionMeta {
   messageCount: number
 }
 
+/** 模型目录条目 */
+export interface ModelMeta {
+  id: string
+  name: string
+  contextWindow: number
+  reasoning: boolean
+}
+
+export interface ProviderCatalogEntry {
+  id: string
+  name: string
+  /** 已配置 api_key 凭据 */
+  hasApiKey: boolean
+  /** 已配置 oauth 凭据 */
+  isOAuth: boolean
+  models: ModelMeta[]
+}
+
+export interface ModelCatalog {
+  providers: ProviderCatalogEntry[]
+}
+
+/** 应用级设置（存 userData/aso-settings.json） */
+export interface AppSettings {
+  /** 覆盖 pi 默认系统提示词（空串 = 不覆盖） */
+  systemPrompt: string
+}
+
 /**
  * 转发到渲染进程的 agent 事件。
  * 已归一化为可结构化克隆的普通 JSON（message 原样透传，渲染层防御性读取）。
@@ -43,6 +71,7 @@ export type AgentUiEvent =
   | { type: 'session_ready'; state: SessionState }
   | { type: 'session_error'; message: string }
   | { type: 'session_switched'; state: SessionState; messages: unknown[]; activeTools: Record<string, unknown> }
+  | { type: 'state'; state: SessionState }
   | { type: 'agent_start' }
   | { type: 'agent_end' }
   | { type: 'agent_settled' }