diff --git a/apps/desktop/src/main/ipc.ts b/apps/desktop/src/main/ipc.ts
index 9b7422c..99f1a7a 100644
--- a/apps/desktop/src/main/ipc.ts
+++ b/apps/desktop/src/main/ipc.ts
@@ -147,6 +147,11 @@ export function registerIpc(): AgentService {
     return pass(() => service.setSystemPrompt(text))
   })
 
+  ipcMain.handle('settings:setTheme', (_event, id: unknown) => {
+    if (typeof id !== 'string' || !id.trim()) throw new Error('invalid theme id')
+    service.setThemeColor(id.trim())
+  })
+
   // ---- 工作区 ----
   ipcMain.handle('workspaces:list', () =>
     service.listWorkspaces().catch((err: unknown) => {
diff --git a/apps/desktop/src/main/pi/agent-service.ts b/apps/desktop/src/main/pi/agent-service.ts
index d977250..e4d1fb0 100644
--- a/apps/desktop/src/main/pi/agent-service.ts
+++ b/apps/desktop/src/main/pi/agent-service.ts
@@ -89,7 +89,8 @@ export class AgentService {
           : undefined,
         // 历史版本存过 autoEdit/plan，统一收敛回 confirm
         permissionMode:
-          raw.permissionMode === 'full' ? 'full' : 'confirm'
+          raw.permissionMode === 'full' ? 'full' : 'confirm',
+        themeColor: typeof raw.themeColor === 'string' ? raw.themeColor : undefined
       }
     } catch {
       this.settings = { systemPrompt: '', permissionMode: this.permissionMode }
@@ -649,13 +650,14 @@ export class AgentService {
 
   async listSessions(): Promise<SessionMeta[]> {
     const infos = await SessionManager.list(this.cwd)
+    // 空会话（一条消息都没发过）不上列表：第一句发出之后才在侧栏可见
     const metas = infos
+      .filter((info) => info.messageCount > 0)
       .sort((a, b) => b.modified.getTime() - a.modified.getTime())
       .map((info) => toSessionMeta(info))
-    // 新会话在首条消息写入前没有 .jsonl 文件，SessionManager.list 扫不到；
-    // 把当前活跃会话兜底合并进列表，避免侧栏“新建后不出现”
+    // 未落盘的活跃会话兜底合并进列表（同样要求已有消息）
     const session = this.runtime?.session
-    if (session && !metas.some((m) => samePath(m.path, session.sessionFile ?? ''))) {
+    if (session && session.messages.length > 0 && !metas.some((m) => samePath(m.path, session.sessionFile ?? ''))) {
       const now = new Date().toISOString()
       metas.unshift({
         id: session.sessionId,
@@ -876,6 +878,12 @@ export class AgentService {
     }
   }
 
+  /** 主题色偏好（纯外观，仅持久化；渲染层负责应用） */
+  setThemeColor(id: string): void {
+    this.settings = { ...this.settings, themeColor: id }
+    this.saveSettings()
+  }
+
   private async rebuildRuntime(): Promise<void> {
     const old = this.runtime
     this.runtime = null
diff --git a/apps/desktop/src/preload/index.ts b/apps/desktop/src/preload/index.ts
index 5426d86..e93c747 100644
--- a/apps/desktop/src/preload/index.ts
+++ b/apps/desktop/src/preload/index.ts
@@ -63,6 +63,7 @@ const api = {
   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),
+  setThemeColor: (id: string): Promise<void> => ipcRenderer.invoke('settings:setTheme', id),
   resolveApproval: (id: string, approved: boolean): Promise<void> =>
     ipcRenderer.invoke('approval:resolve', id, approved),
   onEvent: (callback: (event: AgentUiEvent) => void): (() => void) => {
diff --git a/apps/desktop/src/renderer/src/App.tsx b/apps/desktop/src/renderer/src/App.tsx
index c6eadc7..98726c4 100644
--- a/apps/desktop/src/renderer/src/App.tsx
+++ b/apps/desktop/src/renderer/src/App.tsx
@@ -8,6 +8,7 @@ import { BottomSlot } from './components/BottomSlot'
 import { Composer } from './components/Composer'
 import { SettingsModal } from './components/SettingsModal'
 import { Search } from './components/Search'
+import { applyThemeColor } from './lib/theme'
 
 export default function App(): JSX.Element {
   const {
@@ -31,6 +32,14 @@ export default function App(): JSX.Element {
   const [settingsOpen, setSettingsOpen] = useState(false)
   const [searchOpen, setSearchOpen] = useState(false)
 
+  // 启动时应用持久化的主题色
+  useEffect(() => {
+    void window.api
+      .getSettings()
+      .then((s) => applyThemeColor(s.themeColor))
+      .catch(() => undefined)
+  }, [])
+
   // 全局快捷键：Ctrl+N 新会话 / Ctrl+K 搜索 / Ctrl+, 设置 / Esc 关闭弹窗
   useEffect(() => {
     const onKey = (e: KeyboardEvent): void => {
@@ -110,6 +119,8 @@ export default function App(): JSX.Element {
               disabled={!state.ready}
               model={state.sessionState?.model}
               permissionMode={state.sessionState?.permissionMode ?? 'confirm'}
+              sessionKey={state.sessionState?.sessionId}
+              sessionMessageCount={state.sessionState?.messageCount}
               onSend={send}
               onStop={stop}
               onNewSession={newSession}
diff --git a/apps/desktop/src/renderer/src/components/ApprovalCard.tsx b/apps/desktop/src/renderer/src/components/ApprovalCard.tsx
index 5bb2694..c4158c3 100644
--- a/apps/desktop/src/renderer/src/components/ApprovalCard.tsx
+++ b/apps/desktop/src/renderer/src/components/ApprovalCard.tsx
@@ -222,7 +222,7 @@ export function ApprovalCard({
           </div>
 
           <div className="-mr-0.5 flex items-center gap-1.5">
-            <Button variant="ghost" size="sm" onClick={() => settle(false, '已拒绝')}>
+            <Button variant="quiet" size="sm" onClick={() => settle(false, '已拒绝')}>
               跳过
             </Button>
             <Button
diff --git a/apps/desktop/src/renderer/src/components/ChatView.tsx b/apps/desktop/src/renderer/src/components/ChatView.tsx
index 897d9a4..36798b1 100644
--- a/apps/desktop/src/renderer/src/components/ChatView.tsx
+++ b/apps/desktop/src/renderer/src/components/ChatView.tsx
@@ -11,26 +11,19 @@ const SUGGESTIONS = [
   '查询最近一次上架任务的执行结果'
 ]
 
-/** 空状态：大标题 + 建议词（beautifului Streaming Text 的 follow-ups 行样式） */
+/** 空状态：一行小标题 + 三条建议（纯文本行，点击填入输入框） */
 function EmptyState({ onPick }: { onPick: (text: string) => void }): ReactNode {
   return (
-    <div className="flex h-full flex-col items-center justify-center px-8 text-center">
-      <h2 className="mb-2 text-[32px] font-semibold leading-normal text-ink">今天想做点什么？</h2>
-      <p className="mb-8 max-w-md text-base leading-normal text-ink-3">
-        描述你的目标，Agent 会按 SOP 调用工具完成；也可以随时切为手动逐步执行。
-      </p>
-      <div className="grid w-full max-w-md flex-col">
+    <div className="flex h-full flex-col items-center justify-center gap-4 px-8 text-center">
+      <h2 className="text-[19px] font-medium text-accent-ink">今天想做点什么？</h2>
+      <div className="flex flex-col items-stretch">
         {SUGGESTIONS.map((s) => (
           <button
             key={s}
             type="button"
             onClick={() => onPick(s)}
-            className="-mx-1.5 flex items-center gap-2 rounded-[7px] border-b border-line px-1.5 py-1.5 text-left text-[12.5px] text-ink transition-colors duration-100 hover:bg-hover-2"
+            className="rounded-control px-2 py-1 text-[13px] text-ink-3 transition-colors duration-100 hover:bg-hover-2 hover:text-ink-2"
           >
-            <svg width="11" height="11" viewBox="0 0 24 24" fill="none" stroke="var(--ink-3)" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" className="shrink-0">
-              <path d="M9 10l-5 5 5 5" />
-              <path d="M20 4v7a4 4 0 0 1-4 4H4" />
-            </svg>
             {s}
           </button>
         ))}
diff --git a/apps/desktop/src/renderer/src/components/Composer.tsx b/apps/desktop/src/renderer/src/components/Composer.tsx
index 4762c7d..df202d6 100644
--- a/apps/desktop/src/renderer/src/components/Composer.tsx
+++ b/apps/desktop/src/renderer/src/components/Composer.tsx
@@ -23,6 +23,24 @@ interface LocalCommand {
 /** 图片附件大小上限（与主进程 pickAttachments 一致） */
 const MAX_IMAGE_BYTES = 8 * 1024 * 1024
 
+// ---- 输入草稿：未发送的输入实时保存；新建的空会话自动复用，发送后清除 ----
+const DRAFT_KEY = 'aso-composer-draft'
+function loadDraft(): string {
+  try {
+    return localStorage.getItem(DRAFT_KEY) ?? ''
+  } catch {
+    return ''
+  }
+}
+function saveDraft(text: string): void {
+  try {
+    if (text) localStorage.setItem(DRAFT_KEY, text)
+    else localStorage.removeItem(DRAFT_KEY)
+  } catch {
+    // 存储不可用时静默放弃（草稿是尽力而为）
+  }
+}
+
 /** 输入框锚定菜单：portal 到 body 固定定位（BottomSlot 的 overflow-hidden 会裁剪普通弹层） */
 function ComposerMenu({
   anchor,
@@ -64,6 +82,8 @@ export function Composer({
   disabled,
   model,
   permissionMode = 'confirm',
+  sessionKey,
+  sessionMessageCount,
   onSend,
   onStop,
   onNewSession,
@@ -78,6 +98,10 @@ export function Composer({
   disabled: boolean
   model?: ModelInfo
   permissionMode?: PermissionMode
+  /** 当前会话 id（切换时触发草稿复用） */
+  sessionKey?: string
+  /** 当前会话消息数（0 = 新建未发言的空会话） */
+  sessionMessageCount?: number
   onSend: (text: string, images?: { mimeType: string; data: string }[]) => void
   onStop: () => void
   onNewSession: () => void
@@ -358,6 +382,24 @@ export function Composer({
     }
   }, [prefillRef])
 
+  // 草稿实时保存（发送后输入框清空，草稿随之清除）
+  useEffect(() => {
+    saveDraft(value)
+  }, [value])
+
+  // 切换到空（新建未发言）会话且输入为空时，复用上次未发送的草稿
+  const prevSessionRef = useRef(sessionKey)
+  useEffect(() => {
+    const prev = prevSessionRef.current
+    prevSessionRef.current = sessionKey
+    if (prev === sessionKey) return
+    if ((sessionMessageCount ?? 0) !== 0) return
+    if (value.trim()) return
+    const draft = loadDraft()
+    if (draft) setValue(draft)
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [sessionKey, sessionMessageCount])
+
   // 自适应高度
   useEffect(() => {
     const el = textareaRef.current
diff --git a/apps/desktop/src/renderer/src/components/SettingsModal.tsx b/apps/desktop/src/renderer/src/components/SettingsModal.tsx
index 16110de..0c6cdcb 100644
--- a/apps/desktop/src/renderer/src/components/SettingsModal.tsx
+++ b/apps/desktop/src/renderer/src/components/SettingsModal.tsx
@@ -16,15 +16,18 @@ import {
   LuSettings2,
   LuSparkles,
   LuTerminal,
+  LuTextQuote,
   LuWebhook,
   LuX
 } from 'react-icons/lu'
 import type { IconType } from 'react-icons'
 import type { CustomProviderConfig, ModelCatalog, ModelMeta, ProviderCatalogEntry, ResourceDetails, SessionState } from '@shared/types'
+import { THEME_PRESETS, applyThemeColor } from '../lib/theme'
 
 type Tab =
   | 'general'
   | 'model'
+  | 'prompt'
   | 'memory'
   | 'subagent'
   | 'plugins'
@@ -39,7 +42,8 @@ const NAV: Array<{ group: string; items: Array<{ id: Tab; label: string; icon: I
     group: '基础设置',
     items: [
       { id: 'general', label: '常规', icon: LuSettings2 },
-      { id: 'model', label: '模型设置', icon: LuCpu }
+      { id: 'model', label: '模型设置', icon: LuCpu },
+      { id: 'prompt', label: '系统提示词', icon: LuTextQuote }
     ]
   },
   {
@@ -65,8 +69,9 @@ const PLACEHOLDER: Record<string, string> = {
 }
 
 const TAB_META: Record<Tab, { title: string; desc: string }> = {
-  general: { title: '常规', desc: '管理 Agent 的系统提示词与基础行为。' },
+  general: { title: '常规', desc: '主题色等外观偏好。' },
   model: { title: '模型设置', desc: '' },
+  prompt: { title: '系统提示词', desc: '覆盖 Agent 的系统提示词，保存后重建运行时。' },
   memory: { title: '记忆', desc: PLACEHOLDER.memory },
   subagent: { title: '子智能体', desc: PLACEHOLDER.subagent },
   plugins: { title: '插件', desc: PLACEHOLDER.plugins },
@@ -618,6 +623,7 @@ export function SettingsModal({
   const [keyValue, setKeyValue] = useState('')
   const [prompt, setPrompt] = useState('')
   const [promptDirty, setPromptDirty] = useState(false)
+  const [theme, setTheme] = useState('default')
   const [busy, setBusy] = useState(false)
   const [notice, setNotice] = useState<{ kind: 'ok' | 'err'; text: string } | null>(null)
   const [resources, setResources] = useState<ResourceDetails | null>(null)
@@ -701,6 +707,7 @@ export function SettingsModal({
       .then((s) => {
         setPrompt(s.systemPrompt)
         setPromptDirty(false)
+        setTheme(s.themeColor ?? 'default')
       })
       .catch(() => undefined)
     setNotice(null)
@@ -782,6 +789,36 @@ export function SettingsModal({
 
           <div ref={scrollRef} className="min-h-0 flex-1 overflow-y-auto px-6 pb-4">
             {tab === 'general' && (
+              <div className="flex flex-col gap-6">
+                <div>
+                  <div className="text-[12.5px] font-medium text-zinc-700">主题色</div>
+                  <div className="mt-1 text-[11.5px] text-zinc-400">影响链接、选中态、焦点环等强调色，点击即时生效。</div>
+                  <div className="mt-3 flex flex-wrap items-center gap-3">
+                    {THEME_PRESETS.map((p) => (
+                      <button
+                        key={p.id}
+                        type="button"
+                        title={p.label}
+                        aria-label={`主题色：${p.label}`}
+                        onClick={() => {
+                          setTheme(p.id)
+                          applyThemeColor(p.id)
+                          void window.api.setThemeColor(p.id).catch(() => undefined)
+                        }}
+                        className={`flex size-8 items-center justify-center rounded-full transition-transform hover:scale-105 ${
+                          theme === p.id ? 'ring-2 ring-zinc-900 ring-offset-2' : 'ring-1 ring-zinc-200'
+                        }`}
+                        style={{ background: p.accent }}
+                      >
+                        {theme === p.id && <LuCheck size={14} className="text-white drop-shadow" />}
+                      </button>
+                    ))}
+                  </div>
+                </div>
+              </div>
+            )}
+
+            {tab === 'prompt' && (
               <div className="flex h-full min-h-0 flex-col">
                 <textarea
                   value={prompt}
@@ -905,7 +942,7 @@ export function SettingsModal({
               />
             )}
 
-            {tab !== 'general' && tab !== 'model' && tab !== 'skills' && tab !== 'commands' && (
+            {tab !== 'general' && tab !== 'model' && tab !== 'prompt' && tab !== 'skills' && tab !== 'commands' && (
               <ComingSoon icon={NAV[1].items.find((i) => i.id === tab)?.icon ?? LuPuzzle} label={meta.title} />
             )}
           </div>
diff --git a/apps/desktop/src/renderer/src/hooks/useAgent.ts b/apps/desktop/src/renderer/src/hooks/useAgent.ts
index 0e57ecb..d1a0ed8 100644
--- a/apps/desktop/src/renderer/src/hooks/useAgent.ts
+++ b/apps/desktop/src/renderer/src/hooks/useAgent.ts
@@ -311,7 +311,9 @@ export function useAgent(): UseAgent {
       dispatch({ type: 'event', event })
       // 会话集合可能在后台变化（新建/删除/重命名），切换后刷新列表；
       // 每个回合结束（stats）也刷新一次，让新会话首条消息落盘后的元数据及时更新
-      if (event.type === 'session_switched' || event.type === 'stats') {
+      const firstUserLanded =
+        event.type === 'message_end' && readRole(event.message) === 'user'
+      if (event.type === 'session_switched' || event.type === 'stats' || firstUserLanded) {
         void window.api
           .listSessions()
           .then(setSessions)
diff --git a/apps/desktop/src/renderer/src/lib/api.ts b/apps/desktop/src/renderer/src/lib/api.ts
index 907c8f0..dfb3780 100644
--- a/apps/desktop/src/renderer/src/lib/api.ts
+++ b/apps/desktop/src/renderer/src/lib/api.ts
@@ -56,6 +56,7 @@ declare global {
       logoutProvider: (providerId: string) => Promise<void>
       getSettings: () => Promise<AppSettings>
       setSystemPrompt: (text: string) => Promise<void>
+      setThemeColor: (id: string) => Promise<void>
       resolveApproval: (id: string, approved: boolean) => Promise<void>
       onEvent: (callback: (event: AgentUiEvent) => void) => () => void
     }
diff --git a/apps/desktop/src/renderer/src/lib/theme.ts b/apps/desktop/src/renderer/src/lib/theme.ts
new file mode 100644
index 0000000..390278a
--- /dev/null
+++ b/apps/desktop/src/renderer/src/lib/theme.ts
@@ -0,0 +1,39 @@
+/**
+ * 主题色（accent）：运行时覆盖 :root 的 --accent / --accent-ink / --accent-tint 三个变量，
+ * Tailwind 的 bg-accent / text-accent-ink / bg-accent-tint 等全部随之生效。
+ * accent-ink 为加深版（保证链接/可交互文本 AA 对比度），tint 为低透明度选中底。
+ */
+
+export interface ThemePreset {
+  id: string
+  label: string
+  accent: string
+  ink: string
+  tint: string
+}
+
+export const THEME_PRESETS: ThemePreset[] = [
+  { id: 'default', label: '默认灰紫', accent: '#8e8ea0', ink: '#707084', tint: 'rgba(142, 142, 160, 0.12)' },
+  { id: 'blue', label: '蓝', accent: '#5b8def', ink: '#3a6cd4', tint: 'rgba(91, 141, 239, 0.12)' },
+  { id: 'green', label: '绿', accent: '#48a878', ink: '#2f7d57', tint: 'rgba(72, 168, 120, 0.13)' },
+  { id: 'orange', label: '橙', accent: '#e08a3c', ink: '#b05f1a', tint: 'rgba(224, 138, 60, 0.14)' },
+  { id: 'red', label: '红', accent: '#d95c5c', ink: '#ad3636', tint: 'rgba(217, 92, 92, 0.12)' },
+  { id: 'purple', label: '紫', accent: '#8e7cd8', ink: '#6a56b8', tint: 'rgba(142, 124, 216, 0.13)' },
+  { id: 'cyan', label: '青', accent: '#38a3a8', ink: '#257b80', tint: 'rgba(56, 163, 168, 0.12)' },
+  { id: 'black', label: '墨黑', accent: '#3a3a3f', ink: '#17171a', tint: 'rgba(23, 23, 26, 0.08)' }
+]
+
+/** 应用主题预设（undefined/未知 id = 恢复默认，移除内联覆盖） */
+export function applyThemeColor(id: string | undefined): void {
+  const preset = THEME_PRESETS.find((p) => p.id === id)
+  const root = document.documentElement
+  if (!preset || preset.id === 'default') {
+    root.style.removeProperty('--accent')
+    root.style.removeProperty('--accent-ink')
+    root.style.removeProperty('--accent-tint')
+    return
+  }
+  root.style.setProperty('--accent', preset.accent)
+  root.style.setProperty('--accent-ink', preset.ink)
+  root.style.setProperty('--accent-tint', preset.tint)
+}
diff --git a/apps/desktop/src/shared/types.ts b/apps/desktop/src/shared/types.ts
index 53e3115..213f542 100644
--- a/apps/desktop/src/shared/types.ts
+++ b/apps/desktop/src/shared/types.ts
@@ -92,6 +92,8 @@ export interface AppSettings {
   customWorkspaces?: string[]
   /** 权限模式（缺省 confirm） */
   permissionMode?: PermissionMode
+  /** 主题色预设 id（缺省 default，见 renderer lib/theme.ts） */
+  themeColor?: string
 }
 
 /** 权限模式：confirm 变更前确认 / full 完全访问 */