diff --git a/package-lock.json b/package-lock.json
index 16ab06a..04ceb58 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
         "@arco-design/web-vue": "^2.58.0",
         "@tauri-apps/api": "^2",
         "@tauri-apps/plugin-dialog": "^2.7.1",
-        "dompurify": "^3.4.9",
+        "dompurify": "^3.4.10",
         "marked": "^18.0.5",
         "vue": "^3.5.13",
         "vue-i18n": "9",
diff --git a/package.json b/package.json
index 8c3290c..449dc3c 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "@arco-design/web-vue": "^2.58.0",
     "@tauri-apps/api": "^2",
     "@tauri-apps/plugin-dialog": "^2.7.1",
-    "dompurify": "^3.4.9",
+    "dompurify": "^3.4.10",
     "marked": "^18.0.5",
     "vue": "^3.5.13",
     "vue-i18n": "9",
diff --git a/src/App.vue b/src/App.vue
index 24e6094..ea3b919 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -270,8 +270,6 @@ const primaryNav = [
 const secondaryNav = [
   { path: '/knowledge', label: 'nav.knowledge',
     svg: '<svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><path d="M4 19.5A2.5 2.5 0 016.5 17H20"/><path d="M6.5 2H20v20H6.5A2.5 2.5 0 014 19.5v-15A2.5 2.5 0 016.5 2z"/></svg>' },
-  { path: '/decisions', label: 'nav.decisions',
-    svg: '<svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><path d="M14 2H6a2 2 0 00-2 2v16a2 2 0 002 2h12a2 2 0 002-2V8z"/><polyline points="14 2 14 8 20 8"/><line x1="16" y1="13" x2="8" y2="13"/><line x1="16" y1="17" x2="8" y2="17"/></svg>' },
 ]
 </script>
 
diff --git a/src/api/task.ts b/src/api/task.ts
index 6974a03..1d4ed3b 100644
--- a/src/api/task.ts
+++ b/src/api/task.ts
@@ -6,6 +6,10 @@ export const taskApi = {
     return invoke('list_tasks', { projectId: projectId ?? null })
   },
 
+  get(id: string): Promise<TaskRecord> {
+    return invoke('get_task_by_id', { id })
+  },
+
   create(input: CreateTaskInput): Promise<TaskRecord> {
     return invoke('create_task', { input })
   },
diff --git a/src/api/types.ts b/src/api/types.ts
index 8d9aeb5..32f4699 100644
--- a/src/api/types.ts
+++ b/src/api/types.ts
@@ -180,6 +180,8 @@ export type AiChatEvent = ({
   type: 'AiError'; error: string
 } | {
   type: 'AiAgentRound'; round: number
+} | {
+  type: 'AiHeartbeat'
 }) & {
   conversation_id?: string
 }
@@ -221,6 +223,9 @@ export interface AiConversationSummary {
   updated_at: string
 }
 
+/** 审批选择类型(F-260615-01: single=单选默认,multiple=多选) */
+export type ApprovalSelectType = 'single' | 'multiple'
+
 /** 人工审批请求 */
 export interface HumanApprovalRequest {
   execution_id: string
@@ -228,6 +233,8 @@ export interface HumanApprovalRequest {
   title: string
   description: string
   options: string[]
+  /** F-260615-01: 缺省 single(向后兼容),multiple 时允许多选 */
+  select_type?: ApprovalSelectType
 }
 
 /** 人工审批响应 */
@@ -235,6 +242,8 @@ export interface HumanApprovalResponse {
   execution_id: string
   node_id: string
   decision: string
+  /** F-260615-01: 多选结果(single 时长度=1,multiple 时长度≥1) */
+  decisions?: string[]
   comment?: string
 }
 
diff --git a/src/components/AiChat.vue b/src/components/AiChat.vue
index b36e121..fd984bb 100644
--- a/src/components/AiChat.vue
+++ b/src/components/AiChat.vue
@@ -197,7 +197,7 @@
                 class="ai-msg-bubble ai-msg-bubble--ai ai-md"
                 :class="{ 'ai-msg-bubble--error': msg.isError }"
               >
-                <div v-html="renderMd(isLastAi(msg) && store.state.currentText ? store.state.currentText : msg.content, isLastAi(msg) && store.state.streaming)"></div>
+                <div v-html="renderContent(msg)"></div>
                 <span v-if="isLastAi(msg) && isViewingGenerating" class="ai-cursor"></span>
               </div>
               <!-- 流式开始但尚无文本时显示光标 -->
@@ -308,14 +308,20 @@
     </div>
     <!-- 确认弹层（删对话等不可逆操作） -->
     <ConfirmDialog :visible="confirmState.visible" :msg="confirmState.msg" @result="answerConfirm" />
+    <!-- 错误 toast(零依赖,复用 Settings.vue 同款 reactive toast;分离窗口无 App.vue 根 toast,故本组件自管) -->
+    <Transition name="ai-toast">
+      <div v-if="toast.visible" class="ai-toast" :class="'ai-toast-' + toast.type">{{ toast.msg }}</div>
+    </Transition>
   </div>
 </template>
 
 <script setup lang="ts">
-import { ref, reactive, computed, nextTick, onMounted, watch } from 'vue'
+import { ref, reactive, computed, nextTick, onMounted, onBeforeUnmount, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useAiStore } from '../stores/ai'
 import ConfirmDialog from './ConfirmDialog.vue'
+import { useConfirm } from '../composables/useConfirm'
+import { useMarkdown } from '../composables/useMarkdown'
 import ToolCardList from './ToolCardList.vue'
 import { formatRelativeZh } from '../utils/time'
 import type { AiConversationSummary, AiMessage, SkillInfo } from '../api/types'
@@ -324,43 +330,112 @@ const props = defineProps<{
   detached?: boolean
 }>()
 
-// marked + DOMPurify 体积较大，延迟加载以加快首屏；加载完成后 mdReady 翻转触发重渲染
-let _marked: typeof import('marked')['marked'] | null = null
-let _purify: typeof import('dompurify')['default'] | null = null
-const mdReady = ref(false)
-// markdown 渲染结果缓存:历史消息文本不变,重渲染(折叠/状态变化触发)命中缓存省去 marked+sanitize 全量解析
-const _mdCache = new Map<string, string>()
+// ═══ Markdown 渲染(ARC-260615-08:自研块级 memo,借鉴方案D流式核心) ═══
+// B-23:渲染基础设施(_marked/_purify/mdReady/_mdCache/loadMarkdown/escapeFallback/
+// renderMd)抽至 composables/useMarkdown(模块级单例),本组件与 TaskDetail 共享。
+// 流式核心(splitBlocks/parseBlock/renderStreamingMd/scheduleStreamParse)保留在本组件,
+// 经 getMarked()/getPurify()/mdReady/escapeFallback 复用同一份渲染器实例,行为零变化。
+const {
+  mdReady,
+  loadMarkdown,
+  renderMd,
+  escapeFallback,
+  getMarked,
+  getPurify,
+} = useMarkdown()
+// _marked/_purify 走 composable 单例(getMarked/getPurify 在 loadMarkdown 后才非 null);
+// 流式 parse 经 getter 取最新引用,行为零变化。
+// 块级 memo:单块文本 → html(流式时已完成块命中跳过,O(全文)→O(末块),借鉴方案D/业界主流机制2)
+const _blockCache = new Map<string, string>()
+const BLOCK_CACHE_LIMIT = 300
+// 流式渲染状态:rAF 节流(多 delta 合并一帧,60fps 封顶防主线程阻塞掉帧)
+const streamingHtml = ref('')
+let rafId: number | null = null
+let lastStreamText = ''
 
-async function loadMarkdown() {
-  const [{ marked }, dp] = await Promise.all([import('marked'), import('dompurify')])
-  marked.setOptions({ breaks: true, gfm: true })
-  _marked = marked
-  _purify = dp.default
-  _mdCache.clear() // 渲染器就绪,清掉之前 escapeHtml 兜底缓存,触发完整 markdown 重渲染
-  mdReady.value = true
-}
-
-function escapeHtml(text: string): string {
-  return text.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;')
-}
-
-function renderMd(text: string, isStreaming = false): string {
-  if (!text) return ''
-  // 流式态纯文本(AR-1):避免每 delta 全量 marked.parse+sanitize 致主线程阻塞掉帧;
-  // 不缓存流式文本(每 delta 变,缓存无收益且污染),仅 escapeHtml + 换行转 <br>;完成后再走 markdown
-  if (isStreaming || !mdReady.value || !_marked || !_purify) {
-    return escapeHtml(text).replace(/\n/g, '<br>')
+/// 切块:代码围栏(```...```)整体一块(跨双换行不切),非代码段按双换行切段。
+/// 流式期末块可能不完整(未闭合围栏/半截段落),交给 parseBlockNoCache 每次重 parse。
+function splitBlocks(text: string): string[] {
+  const blocks: string[] = []
+  const fenceRe = /```[^\n]*\n[\s\S]*?(?:```|$)/g
+  let last = 0
+  let m: RegExpExecArray | null
+  while ((m = fenceRe.exec(text)) !== null) {
+    if (m.index > last) {
+      for (const b of text.slice(last, m.index).split(/\n{2,}/)) if (b.trim()) blocks.push(b)
+    }
+    blocks.push(m[0])
+    last = m.index + m[0].length
   }
-  const cached = _mdCache.get(text)
+  if (last < text.length) {
+    for (const b of text.slice(last).split(/\n{2,}/)) if (b.trim()) blocks.push(b)
+  }
+  return blocks.length ? blocks : [text]
+}
+
+/// 末块不缓存(可能不完整,下次 delta 变),每次重 parse 处理未闭合 token
+function parseBlockNoCache(block: string): string {
+  // _marked/_purify 在 loadMarkdown 后才就绪;此处仅在 mdReady 后被流式分支调用
+  const marked = getMarked()
+  const purify = getPurify()
+  return purify!.sanitize(marked!.parse(block) as string)
+}
+
+/// 块级 memo parse:已完成块缓存命中,O(末块)
+function parseBlock(block: string): string {
+  const cached = _blockCache.get(block)
   if (cached !== undefined) return cached
-  const html = _purify.sanitize(_marked.parse(text) as string)
-  if (_mdCache.size > 200) _mdCache.clear()
-  _mdCache.set(text, html)
+  const html = parseBlockNoCache(block)
+  if (_blockCache.size >= BLOCK_CACHE_LIMIT) _blockCache.delete(_blockCache.keys().next().value!)
+  _blockCache.set(block, html)
   return html
 }
 
+/// 流式渲染:切块 + 块级 memo(前块缓存/末块重 parse)
+function renderStreamingMd(text: string): string {
+  if (!text) return ''
+  if (!mdReady.value || !getMarked() || !getPurify()) {
+    return escapeFallback(text)
+  }
+  const blocks = splitBlocks(text)
+  const n = blocks.length
+  return blocks.map((b, i) => (i === n - 1 ? parseBlockNoCache(b) : parseBlock(b))).join('')
+}
+
+/// rAF 节流:同帧多 delta 仅排队一次,帧内取最新 lastStreamText parse
+function scheduleStreamParse(text: string) {
+  lastStreamText = text
+  if (rafId !== null) return
+  rafId = requestAnimationFrame(() => {
+    rafId = null
+    streamingHtml.value = renderStreamingMd(lastStreamText)
+  })
+}
+
+/// template 绑定入口:最后AI消息流式时用 streamingHtml(rAF节流块级memo),否则 renderMd(完成/历史)
+function renderContent(msg: AiMessage): string {
+  if (isLastAi(msg) && store.state.streaming && store.state.currentText) {
+    return streamingHtml.value
+  }
+  return renderMd(msg.content)
+}
+
 const store = useAiStore()
 const { t } = useI18n()
+
+// ── 错误 toast(零依赖,复用 Settings.vue 同款 reactive toast) ──
+// AiChat 可能以分离窗口运行(App.vue 根 toast 不在 DOM 中),故本组件自管一个 toast;
+// i18n 不在本任务白名单,文案硬编码,后续补 aiChat.toastSendFail key
+const toast = reactive({ visible: false, msg: '', type: 'error' as 'error' | 'warning' | 'info' })
+let _toastTimer: ReturnType<typeof setTimeout> | null = null
+function showToast(msg: string, type: 'error' | 'warning' | 'info' = 'info') {
+  toast.msg = msg
+  toast.type = type
+  toast.visible = true
+  if (_toastTimer) clearTimeout(_toastTimer)
+  _toastTimer = setTimeout(() => { toast.visible = false }, 3000)
+}
+
 const inputText = ref('')
 const inputEl = ref<HTMLTextAreaElement>()
 const messagesContainer = ref<HTMLDivElement>()
@@ -368,23 +443,9 @@ const messagesContainer = ref<HTMLDivElement>()
 const toolCardListRef = ref<InstanceType<typeof ToolCardList>>()
 
 // ── 确认弹层（删对话等不可逆操作，复用 ConfirmDialog 组件） ──
-const confirmState = reactive({
-  visible: false,
-  msg: '',
-  resolve: null as null | ((v: boolean) => void),
-})
-function confirmDialog(msg: string): Promise<boolean> {
-  return new Promise(resolve => {
-    confirmState.msg = msg
-    confirmState.visible = true
-    confirmState.resolve = resolve
-  })
-}
-function answerConfirm(ok: boolean) {
-  confirmState.visible = false
-  confirmState.resolve?.(ok)
-  confirmState.resolve = null
-}
+// 状态机抽至 composables/useConfirm(原 Projects/ProjectDetail/Ideas/Settings/AiChat 各重复一份)
+// 模板 confirmState.visible/msg 在 <script setup> 中自动解包 ref,绑定 ConfirmDialog 不变
+const { confirmState, confirmDialog, answerConfirm } = useConfirm()
 async function confirmDeleteConversation(id: string) {
   const conv = store.state.conversations.find(c => c.id === id)
   const title = conv?.title || t('aiChat.newConversation')
@@ -609,6 +670,9 @@ async function handleSend() {
     console.error('[AI] 发送失败:', e)
     inputText.value = text
     pendingSkill.value = skill
+    // 用户可见提示(原仅 console.error,用户无感);Tauri IPC 错误是字符串非 Error 对象
+    const msg = e instanceof Error ? e.message : String(e)
+    showToast(`发送失败：${msg}`, 'error')
   }
   await nextTick()
   scrollToBottom()
@@ -651,6 +715,20 @@ function onContentChange() {
 watch(() => store.state.messages.length, onContentChange)
 watch(() => store.state.currentText, onContentChange)
 
+// 流式 Markdown 渲染驱动(ARC-260615-08 块级 memo):
+// - currentText 变化(每 delta):rAF 节流 scheduleStreamParse,块级 memo 只重 parse 末块
+// - streaming 翻转:结束清 rAF + 清 streamingHtml(回 renderMd 走 final marked + 缓存)
+watch(() => store.state.currentText, (text) => {
+  if (store.state.streaming && text) scheduleStreamParse(text)
+})
+watch(() => store.state.streaming, (s) => {
+  if (rafId !== null) { cancelAnimationFrame(rafId); rafId = null }
+  if (!s) { streamingHtml.value = ''; lastStreamText = '' }
+})
+onBeforeUnmount(() => {
+  if (rafId !== null) cancelAnimationFrame(rafId)
+})
+
 // ── 工具卡片自动收起:新内容追加(新消息/toolCall 状态变化/文本增长)时,
 // 收起旧的已完成/已拒绝卡片,保留 running/pending/write_file 活跃卡片。
 // 折叠态由 ToolCardList 自治,父级仅经 expose 调 collapseInactive ──
@@ -689,7 +767,7 @@ onMounted(async () => {
   const t0 = (window as any).__APP_T0 ?? 0
   // 启动耗时埋点:debug 级(浏览器默认折叠不干扰,空白屏复现时可开 verbose 看)
   console.debug(`[启动] AiChat mounted: ${(performance.now() - t0).toFixed(0)}ms`)
-  loadMarkdown() // 后台预热 Markdown 渲染器，不阻塞首屏
+  loadMarkdown() // 后台预热 Markdown 渲染器,不阻塞首屏
   await store.startListener()
   await store.loadProviders()
   await store.loadConversations()
@@ -714,6 +792,7 @@ async function toggleAlwaysOnTop() {
 
 <style scoped>
 .ai-panel {
+  position: relative; /* 容纳 .ai-toast(absolute,相对面板定位,嵌入/分离模式均生效) */
   display: flex;
   flex-direction: row;
   height: 100%;
@@ -1356,4 +1435,24 @@ async function toggleAlwaysOnTop() {
   opacity: 0.6;
 }
 
+/* ═══ 错误 toast(复用 Settings.vue .toast 样式,前缀 ai- 防 scoped 冲突) ═══ */
+.ai-toast {
+  position: absolute;
+  top: 16px;
+  left: 50%;
+  transform: translateX(-50%);
+  padding: 8px 14px;
+  border-radius: var(--df-radius);
+  font-size: 12px;
+  z-index: 100;
+  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
+  max-width: 80%;
+  overflow-wrap: anywhere;
+}
+.ai-toast-error { background: var(--df-danger-bg); color: var(--df-danger); border: 0.5px solid var(--df-danger); }
+.ai-toast-warning { background: var(--df-warning-bg); color: var(--df-warning); border: 0.5px solid var(--df-warning); }
+.ai-toast-info { background: var(--df-accent-bg); color: var(--df-accent); border: 0.5px solid var(--df-accent); }
+.ai-toast-enter-active, .ai-toast-leave-active { transition: opacity 0.2s, transform 0.2s; }
+.ai-toast-enter-from, .ai-toast-leave-to { opacity: 0; transform: translate(-50%, -8px); }
+
 </style>
diff --git a/src/components/ToolCard.vue b/src/components/ToolCard.vue
index 838f077..ce03184 100644
--- a/src/components/ToolCard.vue
+++ b/src/components/ToolCard.vue
@@ -320,13 +320,30 @@ function displayArgValue(arg: { key: string; val: unknown }): string {
   return formatArgValue(arg.val)
 }
 
-/** 工具显示名称(含路径摘要);无 path 时硬编码 fallback(path 几乎总有,i18n 兜底属过度防御) */
+/**
+ * 工具显示名称(含目标摘要);文件类按 path,项目类(delete/restore/purge/update_project)按 id
+ * 解析项目名(复用 projectNameById,无则走 fallback),create_* 用固定文案。
+ */
 function toolDisplayName(tc: AiToolCallInfo): string {
-  const p = (tc.args as any)?.path as string | undefined
+  const args = tc.args as any
+  const p = args?.path as string | undefined
   switch (tc.name) {
     case 'read_file': return p ? `${t('aiTool.readPrefix')} ${shortPath(p)}` : t('aiTool.readFallback')
     case 'list_directory': return p ? `${t('aiTool.dirPrefix')} ${shortPath(p)}` : t('aiTool.dirFallback')
     case 'write_file': return p ? `${t('aiTool.writePrefix')} ${shortPath(p)}` : t('aiTool.writeFallback')
+    case 'delete_project':
+    case 'restore_project':
+    case 'purge_project':
+    case 'update_project': {
+      const idKey = PROJECT_ID_TOOL_ARG[tc.name]
+      const id = idKey ? (args?.[idKey] as string | undefined) : ''
+      const name = id ? projectNameById.value[id] : ''
+      const prefixKey = `${tc.name.replace('_project', '')}Prefix` as 'deletePrefix' | 'restorePrefix' | 'purgePrefix' | 'updatePrefix'
+      const fallbackKey = `${tc.name.replace('_project', '')}Fallback` as 'deleteFallback' | 'restoreFallback' | 'purgeFallback' | 'updateFallback'
+      return name ? `${t('aiTool.' + prefixKey)}「${name}」` : t('aiTool.' + fallbackKey)
+    }
+    case 'create_task': return t('aiTool.createTask')
+    case 'create_project': return t('aiTool.createProject')
     default: return formatToolName(tc.name)
   }
 }
diff --git a/src/composables/ai/useAiConversations.ts b/src/composables/ai/useAiConversations.ts
index 4f03cbd..a727bea 100644
--- a/src/composables/ai/useAiConversations.ts
+++ b/src/composables/ai/useAiConversations.ts
@@ -106,6 +106,8 @@ export async function switchConversation(id: string) {
   // 此处查回并把对应 toolCard.status 置 pending_approval,使审批卡片重新可见
   try {
     const pending = await aiApi.pendingToolCalls(id)
+    // 第二 await 后二次比对:切换 A→B 期间避免用 A 的 pending 覆写 B 的 pendingApprovals
+    if (mySwitchId !== _latestSwitchId) return
     if (pending.length) {
       const pendingIds = new Set(pending.map(p => p.tool_call_id))
       const restored: AiToolCallInfo[] = []
diff --git a/src/composables/ai/useAiSend.ts b/src/composables/ai/useAiSend.ts
index b38b543..bb243a6 100644
--- a/src/composables/ai/useAiSend.ts
+++ b/src/composables/ai/useAiSend.ts
@@ -41,8 +41,9 @@ async function sendMessage(text: string, skill?: string) {
     return
   }
 
+  const userMsgId = `user-${nextMsgId()}`
   state.messages.push({
-    id: `user-${nextMsgId()}`,
+    id: userMsgId,
     role: 'user',
     content: text.trim(),
     timestamp: Date.now(),
@@ -68,10 +69,11 @@ async function sendMessage(text: string, skill?: string) {
   try {
     await aiApi.sendMessage(text.trim(), lang, skill)
   } catch (e) {
-    // IPC 失败(spawn 前/provider 配置错等):回滚 streaming 防光标卡死 + 移除空气泡占位;
+    // IPC 失败(spawn 前/provider 配置错等):回滚 streaming 防光标卡死 + 移除 user 消息与空气泡占位;
     // 重新抛出由 handleSend 回填输入框,用户可重试
     state.streaming = false
-    state.messages = state.messages.filter(m => m.id !== aiMsgId)
+    clearStreamWatchdog() // 清 :61 启动的看门狗,防 130s 后 onStreamTimeout 误推错误气泡
+    state.messages = state.messages.filter(m => m.id !== aiMsgId && m.id !== userMsgId)
     throw e
   }
 }
@@ -83,9 +85,16 @@ async function approveToolCall(toolCallId: string, approved: boolean) {
     .flatMap(m => m.toolCalls || [])
     .find(t => t.id === toolCallId)
   if (tc) tc.status = 'running'
+  // 重启看门狗覆盖审批执行→续生成窗口(useAiEvents.ts:162 AiApprovalRequired 已 clear,
+  // 审批态无心跳兜底;approve 后后端要跑工具+续生成,期间任何后端异常不回则按钮永久 running。
+  // 复用通用 watchdog 而非加审批专用超时:复用同一收尾路径(onStreamTimeout 兜底复位 streaming),
+  // 避免新增独立计时器与状态分支)
+  resetStreamWatchdog()
   try {
     await aiApi.approve(toolCallId, approved)
   } catch (e) {
+    // IPC 未送达:用户已点过按钮,清看门狗(避免 130s 后误触发假错误)再回滚到失败态
+    clearStreamWatchdog()
     // 仅 IPC 真失败(审批已处理/网络断)走到这里：后端工具失败已改走 emit completed，不进此分支
     // 不回滚 pending_approval(会卡死按钮)，改设 completed + 错误提示，让用户知晓失败
     console.error('[AI] 审批操作未送达后端:', e)
diff --git a/src/composables/ai/useAiStream.ts b/src/composables/ai/useAiStream.ts
index 07f5528..f849089 100644
--- a/src/composables/ai/useAiStream.ts
+++ b/src/composables/ai/useAiStream.ts
@@ -23,10 +23,26 @@ export function onStreamTimeout() {
   state.generatingConvId = null
   state.currentText = ''
   clearStreamWatchdog()
+  // 文案区分:若已有 completed 工具调用,说明工具执行完后续回复被中断(常见为审批后
+  // 续生成卡住),引导用户继续;否则按纯流式中断处理。
+  // 数据源:state.messages[].toolCalls[].status,反向扫尾部提前退出(O(1) 均,同 findToolCall);
+  // 不复用 useAiEvents.findToolCall 避免反向 import 循环依赖(useAiEvents 已 import 本模块)
+  let hasCompletedTool = false
+  for (let i = state.messages.length - 1; i >= 0; i--) {
+    const toolCalls = state.messages[i].toolCalls
+    if (!toolCalls) continue
+    for (let j = 0; j < toolCalls.length; j++) {
+      if (toolCalls[j].status === 'completed') { hasCompletedTool = true; break }
+    }
+    if (hasCompletedTool) break
+  }
+  const content = hasCompletedTool
+    ? '⚠ 工具已执行完成，后续回复中断（长时间无数据流）。可点继续重试。'
+    : '⚠ 响应中断（长时间无数据流）。可能是网络断连或后端异常，请重试。'
   state.messages.push({
     id: `timeout-${nextMsgId()}`,
     role: 'assistant',
-    content: '⚠ 响应中断（长时间无数据流）。可能是网络断连或后端异常，请重试。',
+    content,
     isError: true,
     timestamp: Date.now(),
   })
diff --git a/src/composables/useMarkdown.ts b/src/composables/useMarkdown.ts
new file mode 100644
index 0000000..48df959
--- /dev/null
+++ b/src/composables/useMarkdown.ts
@@ -0,0 +1,74 @@
+//! Markdown 渲染 composable — 抽自 src/components/AiChat.vue
+//!
+//! 背景:TaskDetail 任务描述需 Markdown 渲染(## 标题 / - 列表),原渲染逻辑只在
+//! AiChat.vue 内联,且与流式核心(splitBlocks/parseBlock/renderStreamingMd)共享
+//! _marked/_purify/mdReady。抽出为 composable 复用,AiChat 流式核心保持原状不动。
+//!
+//! 设计要点:
+//! - **模块级单例**:_marked/_purify/mdReady/_mdCache 放模块作用域,所有调用方共享
+//!   同一份渲染器实例与缓存。AiChat 的 loadMarkdown() 与流式 parseBlock 共用此实例,
+//!   行为与抽前完全一致。
+//! - **XSS 防护**:renderMd 输出经 DOMPurify.sanitize,可安全 v-html。
+//! - **块级 memo**:历史/完成态整段缓存(_mdCache),文本不变命中跳过 marked 全量解析。
+//! - **未就绪兜底**:marked 未加载完成时 escapeHtml + <br> 降级(纯文本安全)。
+//!
+//! 行为零变化说明:本文件函数体从 AiChat.vue 原样移出,逻辑未改动。
+//! AiChat.vue 流式函数(splitBlocks/parseBlock/parseBlockNoCache/renderStreamingMd/
+//! scheduleStreamParse)继续调用 useMarkdown 暴露的 mdReady/escapeFallback,
+//! 渲染结果不变。
+
+import { ref } from 'vue'
+
+// ═══ 模块级单例:AiChat 流式核心与历史 renderMd 共享同一份渲染器/缓存 ═══
+let _marked: typeof import('marked')['marked'] | null = null
+let _purify: typeof import('dompurify')['default'] | null = null
+const mdReady = ref(false)
+// 历史消息整段缓存(文本不变,重渲染命中省去 marked+sanitize 全量解析)
+const _mdCache = new Map<string, string>()
+
+export function useMarkdown() {
+  /** 异步加载 marked + DOMPurify;加载完成后 mdReady 翻转触发重渲染 */
+  async function loadMarkdown() {
+    const [{ marked }, dp] = await Promise.all([import('marked'), import('dompurify')])
+    marked.setOptions({ breaks: true, gfm: true })
+    _marked = marked
+    _purify = dp.default
+    _mdCache.clear() // 渲染器就绪,清兜底缓存触发完整重渲染
+    mdReady.value = true
+  }
+
+  return {
+    mdReady,
+    loadMarkdown,
+    renderMd,
+    // 暴露给 AiChat 流式核心(parseBlock/renderStreamingMd)复用,保持单例共享
+    escapeFallback,
+    getMarked: () => _marked,
+    getPurify: () => _purify,
+    // 仅 AiChat 流式块级 memo 用(独立缓存,不与历史 _mdCache 混)
+    clearHistoryCache: () => _mdCache.clear(),
+  }
+}
+
+function escapeHtml(text: string): string {
+  return text.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;')
+}
+
+/// marked 未就绪时的兜底渲染:HTML 转义 + 换行转 <br>(纯文本安全降级)
+function escapeFallback(text: string): string {
+  return escapeHtml(text).replace(/\n/g, '<br>')
+}
+
+/// 历史/完成态:整段 marked + sanitize + 缓存(函数体原样移自 AiChat.vue)
+function renderMd(text: string): string {
+  if (!text) return ''
+  if (!mdReady.value || !_marked || !_purify) {
+    return escapeFallback(text)
+  }
+  const cached = _mdCache.get(text)
+  if (cached !== undefined) return cached
+  const html = _purify.sanitize(_marked.parse(text) as string)
+  if (_mdCache.size > 200) _mdCache.clear()
+  _mdCache.set(text, html)
+  return html
+}
diff --git a/src/i18n/en/aiTool.ts b/src/i18n/en/aiTool.ts
index ab833c5..0e3b99a 100644
--- a/src/i18n/en/aiTool.ts
+++ b/src/i18n/en/aiTool.ts
@@ -16,6 +16,17 @@ export default {
     dirFallback: 'List Directory',
     writePrefix: 'Write',
     writeFallback: 'Write File',
+    // CRUD tool display names (delete/restore/purge/update_project resolve project name by id; fallback when no id or unresolved)
+    deletePrefix: 'Delete Project',
+    deleteFallback: 'Delete Project',
+    restorePrefix: 'Restore Project',
+    restoreFallback: 'Restore Project from Trash',
+    purgePrefix: 'Purge Project',
+    purgeFallback: 'Purge Project',
+    updatePrefix: 'Update Project',
+    updateFallback: 'Update Project',
+    createTask: 'Create Task',
+    createProject: 'Create Project',
 
     taskCount: '{n} tasks',
     projectCount: '{n} projects',
diff --git a/src/i18n/en/nav.ts b/src/i18n/en/nav.ts
index 85de63a..bfcce59 100644
--- a/src/i18n/en/nav.ts
+++ b/src/i18n/en/nav.ts
@@ -5,7 +5,6 @@ export default {
     projects: 'Projects',
     tasks: 'Tasks',
     knowledge: 'Knowledge',
-    decisions: 'Decisions',
     settings: 'Settings',
     workspace: 'Workspace',
     traceability: 'Traceability',
diff --git a/src/i18n/zh-CN/aiTool.ts b/src/i18n/zh-CN/aiTool.ts
index 4397b00..2e0545f 100644
--- a/src/i18n/zh-CN/aiTool.ts
+++ b/src/i18n/zh-CN/aiTool.ts
@@ -17,6 +17,17 @@ export default {
     dirFallback: '列出目录',
     writePrefix: '写入',
     writeFallback: '写入文件',
+    // CRUD 类工具显示名(delete/restore/purge/update_project 按 id 解析项目名;无 id 或解析失败走 fallback)
+    deletePrefix: '删除项目',
+    deleteFallback: '删除项目',
+    restorePrefix: '恢复项目',
+    restoreFallback: '从回收站恢复项目',
+    purgePrefix: '彻底删除项目',
+    purgeFallback: '彻底删除项目',
+    updatePrefix: '更新项目',
+    updateFallback: '更新项目',
+    createTask: '创建任务',
+    createProject: '创建项目',
 
     // completed 结果摘要(header 折叠态可见)
     taskCount: '{n} 项任务',
diff --git a/src/i18n/zh-CN/nav.ts b/src/i18n/zh-CN/nav.ts
index d03a081..6707d42 100644
--- a/src/i18n/zh-CN/nav.ts
+++ b/src/i18n/zh-CN/nav.ts
@@ -5,7 +5,6 @@ export default {
     projects: '项目',
     tasks: '任务',
     knowledge: '知识库',
-    decisions: '决策',
     settings: '设置',
     workspace: '工作区',
     traceability: '追溯',
diff --git a/src/router/index.ts b/src/router/index.ts
index 45ae77d..cb4f7ff 100644
--- a/src/router/index.ts
+++ b/src/router/index.ts
@@ -41,6 +41,12 @@ const routes = [
     component: () => import('../views/Tasks.vue'),
     meta: { title: '任务', icon: 'icon-thunder' },
   },
+  {
+    path: '/tasks/:id',
+    name: 'TaskDetail',
+    component: () => import('../views/TaskDetail.vue'),
+    meta: { title: '任务详情', icon: 'icon-thunder' },
+  },
   {
     path: '/knowledge',
     name: 'Knowledge',
diff --git a/src/stores/appSettings.ts b/src/stores/appSettings.ts
index d80aae1..74328c9 100644
--- a/src/stores/appSettings.ts
+++ b/src/stores/appSettings.ts
@@ -5,9 +5,8 @@
 //! - 写操作立即更新缓存(乐观),并按 key debounce ~300ms 合并连续快速写
 //! - 组合式 `useSetting` 让组件像用 ref 一样用 v-model 绑定某个 key
 //!
-//! 注意:此为「KV 偏好持久化」层,与已有的 `stores/settings.ts`(mock 的 AI 提供商/
-//! 连接/通用配置列表)是两件事 —— 那个文件承载静态展示数据,本文件承载运行时偏好,
-//! 故单独成文,互不干扰。
+//! 注意:此为「KV 偏好持久化」层,与 AI 提供商/连接配置(store 层)是两件事 ——
+//! 那边承载 provider 业务数据,本文件承载运行时偏好,故单独成文,互不干扰。
 
 import { reactive, ref, watch, type Ref } from 'vue'
 import { settingsApi } from '../api/settings'
diff --git a/src/stores/index.ts b/src/stores/index.ts
index 878d23a..94713e6 100644
--- a/src/stores/index.ts
+++ b/src/stores/index.ts
@@ -3,7 +3,6 @@ export { useProjectStore } from './project'
 export { useKnowledgeStore } from './knowledge'
 
 
-export { useSettingsStore } from './settings'
-export type { AIProvider, Connection, GeneralSettings } from './settings'
-
 export { useAppSettingsStore } from './appSettings'
+
+export { useAiStore } from './ai'
diff --git a/src/stores/project.ts b/src/stores/project.ts
index 4dcde25..d787005 100644
--- a/src/stores/project.ts
+++ b/src/stores/project.ts
@@ -19,6 +19,8 @@ const state = reactive({
     title: string
     description: string
     options: string[]
+    /** F-260615-01: single(缺省)/multiple */
+    select_type?: 'single' | 'multiple'
   } | null,
   loading: false,
   error: null as string | null,
@@ -244,16 +246,31 @@ function createStore() {
     state.liveEvents = []
   }
 
-  async function approveHumanApproval(decision: string, comment?: string) {
+  /**
+   * 发送审批响应。
+   * - 单选(select_type=single 或缺省):传 decision 单值,decisions 留空;
+   * - 多选(select_type=multiple):传 decisions 数组。
+   * F-260615-01: 新增 decisions/select_type 透传,与后端 IPC 签名对齐。
+   */
+  async function approveHumanApproval(
+    decision: string,
+    comment?: string,
+    decisions?: string[],
+  ) {
     if (!state.pendingApproval) return
 
     try {
       // 调用 IPC 命令发送审批响应
+      // R-PD-5: 透传 options 闭环后端校验(options 非空时 decision 必须 ∈ options，否则 IPC 报错)。
+      // options 来自已收到的 HumanApprovalRequest 事件 payload(IPC 无法访问节点 config)。
       await invoke('approve_human_approval', {
         execution_id: state.pendingApproval.execution_id,
         node_id: state.pendingApproval.node_id,
         decision,
-        comment
+        comment,
+        options: state.pendingApproval.options ?? [],
+        decisions: decisions ?? [],
+        selectType: state.pendingApproval.select_type ?? 'single', // Tauri camelCase→snake_case 自动转 select_type
       })
 
       // 清除待审批状态
diff --git a/src/stores/settings.ts b/src/stores/settings.ts
deleted file mode 100644
index 8e8c177..0000000
--- a/src/stores/settings.ts
+++ /dev/null
@@ -1,98 +0,0 @@
-import { reactive, computed } from 'vue'
-
-export interface AIProvider {
-  id: number
-  name: string
-  apiKey: string
-  baseUrl: string
-  models: string[]
-  isDefault: boolean
-}
-
-export interface Connection {
-  id: number
-  name: string
-  type: 'mysql' | 'ssh' | 'redis' | 'mongo'
-  typeLabel: string
-  icon: string
-  host: string
-  port: number
-  user: string
-  connected: boolean
-}
-
-export interface GeneralSettings {
-  theme: 'dark' | 'light' | 'system'
-  language: string
-  dataDir: string
-  autoExecute: boolean
-  logLevel: 'error' | 'warn' | 'info' | 'debug'
-}
-
-const state = reactive({
-  aiProviders: [
-    {
-      id: 1,
-      name: 'Anthropic Claude',
-      apiKey: 'sk-ant-••••••••••••••••7xKm',
-      baseUrl: 'https://api.anthropic.com',
-      models: ['claude-sonnet-4-20250514', 'claude-opus-4-20250514'],
-      isDefault: true,
-    },
-    {
-      id: 2,
-      name: 'Zhipu GLM',
-      apiKey: '••••••••••••••••a3f2',
-      baseUrl: 'https://open.bigmodel.cn/api/paas',
-      models: ['glm-4-plus', 'glm-4-flash'],
-      isDefault: false,
-    },
-    {
-      id: 3,
-      name: 'DeepSeek',
-      apiKey: '••••••••••••••••9b8c',
-      baseUrl: 'https://api.deepseek.com',
-      models: ['deepseek-chat', 'deepseek-coder'],
-      isDefault: false,
-    },
-  ] as AIProvider[],
-
-  connections: [
-    { id: 1, name: 'flux_dev', type: 'mysql' as const, typeLabel: 'MySQL', icon: '🗄️', host: '39.99.243.191', port: 3306, user: 'root', connected: true },
-    { id: 2, name: 'flux_dev', type: 'ssh' as const, typeLabel: 'SSH', icon: '🔐', host: '39.99.243.191', port: 22, user: 'root', connected: true },
-    { id: 3, name: 'flux_redis', type: 'redis' as const, typeLabel: 'Redis', icon: '⚡', host: '127.0.0.1', port: 6379, user: '', connected: true },
-    { id: 4, name: 'suke_dev', type: 'mongo' as const, typeLabel: 'MongoDB', icon: '🍃', host: '127.0.0.1', port: 27017, user: 'admin', connected: false },
-    { id: 5, name: 'rds_read', type: 'mysql' as const, typeLabel: 'MySQL', icon: '🗄️', host: 'rm-8vbrd2wil14hclop3vm.mysql.zhangbei.rds.aliyuncs.com', port: 3306, user: 'u_read', connected: true },
-  ] as Connection[],
-
-  general: {
-    theme: 'dark' as const,
-    language: 'zh-CN',
-    dataDir: 'E:/wk-lab/devflow/data',
-    autoExecute: false,
-    logLevel: 'info' as const,
-  } as GeneralSettings,
-})
-
-export function useSettingsStore() {
-  const aiProviders = computed(() => state.aiProviders)
-  const connections = computed(() => state.connections)
-  const general = computed(() => state.general)
-
-  const defaultProvider = computed(() =>
-    state.aiProviders.find(p => p.isDefault)
-  )
-
-  const connectionStats = computed(() => ({
-    total: state.connections.length,
-    connected: state.connections.filter(c => c.connected).length,
-  }))
-
-  return {
-    aiProviders,
-    connections,
-    general,
-    defaultProvider,
-    connectionStats,
-  }
-}
diff --git a/src/styles/global.css b/src/styles/global.css
index c240daa..1492d0d 100644
--- a/src/styles/global.css
+++ b/src/styles/global.css
@@ -121,7 +121,9 @@ html, body, #app {
 ::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.14); }
 
 /* — Selection — */
-::selection { background: var(--df-accent-soft); color: var(--df-accent); }
+/* 选中态用 accent 实色 + 白字：保证紫底气泡(accent)选中也高对比可读,
+   避免 accent-soft(透明紫)叠 accent 紫底导致紫字紫底不可见(深色主题) */
+::selection { background: var(--df-accent-hover); color: #fff; }
 
 /* — Animations — */
 @keyframes fadeInUp {
diff --git a/src/views/Ideas.vue b/src/views/Ideas.vue
index 284f2df..ba6d283 100644
--- a/src/views/Ideas.vue
+++ b/src/views/Ideas.vue
@@ -59,7 +59,13 @@
           <h2 class="detail-title">{{ currentIdea.title }}</h2>
           <span class="status-tag" :class="'status-' + currentIdea.status">{{ $t(statusLabelKey(currentIdea.status)) }}</span>
         </div>
-        <p class="detail-desc">{{ currentIdea.description }}</p>
+        <!-- B-260615-25:灵感描述 Markdown 渲染,复用 useMarkdown composable(同 B-24 TaskDetail),空值回退 — -->
+        <p
+          v-if="currentIdea.description"
+          class="detail-desc ai-md"
+          v-html="renderedDesc"
+        ></p>
+        <p v-else class="detail-desc">—</p>
 
         <!-- 对抗式评估 -->
         <div class="detail-section">
@@ -208,8 +214,19 @@ import { useProjectStore } from '../stores/project'
 import { formatDate } from '../utils/time'
 import ConfirmDialog from '../components/ConfirmDialog.vue'
 import { useConfirm } from '../composables/useConfirm'
+import { useMarkdown } from '../composables/useMarkdown'
 import type { IdeaRecord } from '../api/types'
 
+// B-260615-25:灵感描述 Markdown 渲染(复用 AiChat/TaskDetail 同款渲染器,模块级单例)
+const { renderMd, loadMarkdown, mdReady } = useMarkdown()
+
+// 描述渲染依赖 mdReady 响应式:loadMarkdown 完成前 escapeFallback 纯文本,完成后 mdReady 翻转
+// 触发 computed 重算(B-25 漏响应式致 v-html=renderMd 首次纯文本后不重算,代码块不渲染)
+const renderedDesc = computed(() => {
+  void mdReady.value
+  return renderMd(currentIdea.value?.description ?? '')
+})
+
 const { t } = useI18n()
 const router = useRouter()
 const store = useProjectStore()
@@ -433,6 +450,7 @@ async function onStatusChange(e: Event) {
 }
 
 onMounted(async () => {
+  loadMarkdown() // 后台预热 Markdown 渲染器(模块单例,与 AiChat/TaskDetail 共享),不阻塞
   await store.loadIdeas()
 })
 </script>
@@ -797,6 +815,63 @@ onMounted(async () => {
   margin-bottom: var(--df-gap-page);
 }
 
+/* ===== 灵感描述 Markdown 渲染(B-260615-25,样式同 TaskDetail B-24 .ai-md 收敛) ===== */
+.detail-desc.ai-md { white-space: normal; color: var(--df-text-secondary); }
+.detail-desc.ai-md :deep(p) { margin: 0 0 6px; }
+.detail-desc.ai-md :deep(p:last-child) { margin-bottom: 0; }
+.detail-desc.ai-md :deep(ul), .detail-desc.ai-md :deep(ol) { margin: 4px 0; padding-left: 20px; }
+.detail-desc.ai-md :deep(li) { margin: 2px 0; line-height: 1.5; }
+.detail-desc.ai-md :deep(code) {
+  font-family: var(--df-font-mono);
+  font-size: 12px;
+  padding: 1px 5px;
+  background: rgba(255,255,255,0.06);
+  border-radius: var(--df-radius-sm);
+  color: var(--df-accent);
+}
+.detail-desc.ai-md :deep(pre) {
+  margin: 8px 0;
+  padding: 10px 12px;
+  background: var(--df-bg);
+  border: 0.5px solid var(--df-border);
+  border-radius: var(--df-radius);
+  overflow-x: auto;
+}
+.detail-desc.ai-md :deep(pre code) {
+  padding: 0;
+  background: transparent;
+  border-radius: 0;
+  color: var(--df-text-secondary);
+  font-size: 12px;
+  line-height: 1.5;
+}
+.detail-desc.ai-md :deep(blockquote) {
+  margin: 6px 0;
+  padding: 4px 12px;
+  border-left: 2px solid var(--df-accent);
+  color: var(--df-text-secondary);
+}
+.detail-desc.ai-md :deep(h1), .detail-desc.ai-md :deep(h2), .detail-desc.ai-md :deep(h3) {
+  font-weight: 500;
+  color: var(--df-text);
+  margin: 8px 0 4px;
+}
+.detail-desc.ai-md :deep(h1) { font-size: 16px; }
+.detail-desc.ai-md :deep(h2) { font-size: 14px; }
+.detail-desc.ai-md :deep(h3) { font-size: 13px; }
+.detail-desc.ai-md :deep(a) { color: var(--df-accent); text-decoration: none; }
+.detail-desc.ai-md :deep(a:hover) { text-decoration: underline; }
+.detail-desc.ai-md :deep(strong) { font-weight: 500; color: var(--df-text); }
+.detail-desc.ai-md :deep(hr) { border: none; border-top: 0.5px solid var(--df-border); margin: 8px 0; }
+.detail-desc.ai-md :deep(table) {
+  width: 100%; border-collapse: collapse; margin: 6px 0;
+  font-size: 12px; overflow-x: auto; display: block;
+}
+.detail-desc.ai-md :deep(th), .detail-desc.ai-md :deep(td) {
+  padding: 4px 8px; border: 0.5px solid var(--df-border); text-align: left;
+}
+.detail-desc.ai-md :deep(th) { font-weight: 500; background: var(--df-bg); }
+
 .detail-section {
   margin-bottom: var(--df-gap-page);
 }
diff --git a/src/views/Knowledge.vue b/src/views/Knowledge.vue
index d1edc98..06bd804 100644
--- a/src/views/Knowledge.vue
+++ b/src/views/Knowledge.vue
@@ -110,7 +110,13 @@
 
             <div class="detail-field">
               <label>{{ $t('knowledge.contentLabel') }}</label>
-              <div v-if="!editing" class="detail-content">{{ detail.knowledge.content }}</div>
+              <!-- B-260615-25:知识内容 Markdown 渲染(展示态),复用 useMarkdown composable(同 B-24 TaskDetail);编辑态保持 textarea -->
+              <div
+                v-if="!editing && detail.knowledge.content"
+                class="detail-content ai-md"
+                v-html="renderedContent"
+              ></div>
+              <div v-else-if="!editing" class="detail-content">—</div>
               <textarea v-else v-model="editForm.content" class="edit-input edit-textarea"></textarea>
             </div>
 
@@ -229,11 +235,22 @@
 import { ref, computed, onMounted, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useKnowledgeStore, KNOWLEDGE_KINDS, parseTags } from '../stores/knowledge'
+import { useMarkdown } from '../composables/useMarkdown'
 import type { KnowledgeDetailPayload, KnowledgeEventRecord } from '../api/types'
 
 const { t } = useI18n()
 const store = useKnowledgeStore()
 
+// B-260615-25:知识内容 Markdown 渲染(复用 AiChat/TaskDetail 同款渲染器,模块级单例)
+const { renderMd, loadMarkdown, mdReady } = useMarkdown()
+
+// 内容渲染依赖 mdReady 响应式:loadMarkdown 完成前 escapeFallback 纯文本,完成后 mdReady 翻转
+// 触发 computed 重算(B-25 漏响应式致 v-html=renderMd 首次纯文本后不重算,代码块不渲染)
+const renderedContent = computed(() => {
+  void mdReady.value
+  return renderMd(detail.value?.knowledge.content ?? '')
+})
+
 // 顶层 Tab: library(知识库) | inbox(审核收件箱)
 const topTab = ref<'library' | 'inbox'>('library')
 
@@ -495,6 +512,7 @@ function relativeTime(millisStr: string): string {
 }
 
 onMounted(() => {
+  loadMarkdown() // 后台预热 Markdown 渲染器(模块单例,与 AiChat/TaskDetail 共享),不阻塞
   store.loadList()
   store.loadCandidates()
 })
@@ -592,6 +610,63 @@ onMounted(() => {
 .detail-field { margin-bottom: 12px; }
 .detail-field label { display: block; font-size: 12px; color: var(--df-text-secondary); margin-bottom: 4px; }
 .detail-content { font-size: 13px; color: var(--df-text); line-height: 1.6; white-space: pre-wrap; }
+
+/* ===== 知识内容 Markdown 渲染(B-260615-25,样式同 TaskDetail B-24 .ai-md 收敛) ===== */
+.detail-content.ai-md { white-space: normal; }
+.detail-content.ai-md :deep(p) { margin: 0 0 6px; }
+.detail-content.ai-md :deep(p:last-child) { margin-bottom: 0; }
+.detail-content.ai-md :deep(ul), .detail-content.ai-md :deep(ol) { margin: 4px 0; padding-left: 20px; }
+.detail-content.ai-md :deep(li) { margin: 2px 0; line-height: 1.5; }
+.detail-content.ai-md :deep(code) {
+  font-family: var(--df-font-mono);
+  font-size: 12px;
+  padding: 1px 5px;
+  background: rgba(255,255,255,0.06);
+  border-radius: var(--df-radius-sm);
+  color: var(--df-accent);
+}
+.detail-content.ai-md :deep(pre) {
+  margin: 8px 0;
+  padding: 10px 12px;
+  background: var(--df-bg);
+  border: 0.5px solid var(--df-border);
+  border-radius: var(--df-radius);
+  overflow-x: auto;
+}
+.detail-content.ai-md :deep(pre code) {
+  padding: 0;
+  background: transparent;
+  border-radius: 0;
+  color: var(--df-text-secondary);
+  font-size: 12px;
+  line-height: 1.5;
+}
+.detail-content.ai-md :deep(blockquote) {
+  margin: 6px 0;
+  padding: 4px 12px;
+  border-left: 2px solid var(--df-accent);
+  color: var(--df-text-secondary);
+}
+.detail-content.ai-md :deep(h1), .detail-content.ai-md :deep(h2), .detail-content.ai-md :deep(h3) {
+  font-weight: 500;
+  color: var(--df-text);
+  margin: 8px 0 4px;
+}
+.detail-content.ai-md :deep(h1) { font-size: 16px; }
+.detail-content.ai-md :deep(h2) { font-size: 14px; }
+.detail-content.ai-md :deep(h3) { font-size: 13px; }
+.detail-content.ai-md :deep(a) { color: var(--df-accent); text-decoration: none; }
+.detail-content.ai-md :deep(a:hover) { text-decoration: underline; }
+.detail-content.ai-md :deep(strong) { font-weight: 500; color: var(--df-text); }
+.detail-content.ai-md :deep(hr) { border: none; border-top: 0.5px solid var(--df-border); margin: 8px 0; }
+.detail-content.ai-md :deep(table) {
+  width: 100%; border-collapse: collapse; margin: 6px 0;
+  font-size: 12px; overflow-x: auto; display: block;
+}
+.detail-content.ai-md :deep(th), .detail-content.ai-md :deep(td) {
+  padding: 4px 8px; border: 0.5px solid var(--df-border); text-align: left;
+}
+.detail-content.ai-md :deep(th) { font-weight: 500; background: var(--df-bg); }
 .detail-tags { display: flex; gap: 6px; flex-wrap: wrap; }
 .tag { font-size: 11px; padding: 2px 8px; border-radius: var(--df-radius-xs); background: rgba(108,99,255,0.1); color: var(--df-accent); }
 .muted { color: var(--df-text-dim); font-size: 12px; }
diff --git a/src/views/ProjectDetail.vue b/src/views/ProjectDetail.vue
index 7819f4d..590e5e9 100644
--- a/src/views/ProjectDetail.vue
+++ b/src/views/ProjectDetail.vue
@@ -110,9 +110,15 @@
             <span class="label">{{ $t('projectDetail.updatedAt') }}</span>
             <span>{{ formatDate(currentProject.updated_at) }}</span>
           </div>
-          <div class="info-item">
+          <div class="info-item info-block">
             <span class="label">{{ $t('projectDetail.description') }}</span>
-            <span>{{ currentProject.description || '—' }}</span>
+            <!-- B-260615-25:项目描述 Markdown 渲染,复用 useMarkdown composable(同 B-24 TaskDetail) -->
+            <span
+              v-if="currentProject.description"
+              class="value description ai-md"
+              v-html="renderedDesc"
+            ></span>
+            <span v-else>—</span>
           </div>
           <div class="info-item">
             <span class="label">{{ $t('projectDetail.projectStatus') }}</span>
@@ -153,7 +159,6 @@
         <section class="panel">
           <div class="panel-header">
             <h2>{{ $t('projectDetail.workflowLogTitle') }}</h2>
-            <button class="btn btn-ghost btn-sm" @click="runDemoWorkflow" :disabled="workflowRunning">{{ $t('projectDetail.runDemoWorkflow') }}</button>
           </div>
           <div class="log-list" ref="logListRef">
             <div class="log-item" v-for="(evt, idx) in formattedEvents" :key="idx" :class="'log-' + evt.level">
@@ -176,17 +181,39 @@
           <p style="margin: 16px 0; color: var(--df-text-secondary);">{{ store.pendingApproval.description }}</p>
           <div style="margin-bottom: 20px;">
             <p style="margin-bottom: 8px; font-size: 14px;">{{ $t('projectDetail.approvalHint') }}</p>
-            <div style="display: flex; gap: 12px; flex-wrap: wrap;">
+            <!-- F-260615-01: select_type=multiple → checkbox 多选,缺省 single → 按钮单选 -->
+            <template v-if="isMultipleSelect">
+              <div style="display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px;">
+                <label
+                  v-for="(option, idx) in store.pendingApproval.options"
+                  :key="idx"
+                  style="display: flex; align-items: center; gap: 8px; cursor: pointer;"
+                >
+                  <input type="checkbox" :value="option" v-model="multiDecisions" />
+                  <span>{{ option }}</span>
+                </label>
+              </div>
               <button
-                v-for="(option, idx) in store.pendingApproval.options"
-                :key="idx"
-                class="btn"
-                :class="idx === 0 ? 'btn-primary' : 'btn-ghost'"
-                @click="handleApproval(option)"
+                class="btn btn-primary"
+                :disabled="multiDecisions.length === 0"
+                @click="handleApprovalMulti"
               >
-                {{ option }}
+                确认({{ multiDecisions.length }})
               </button>
-            </div>
+            </template>
+            <template v-else>
+              <div style="display: flex; gap: 12px; flex-wrap: wrap;">
+                <button
+                  v-for="(option, idx) in store.pendingApproval.options"
+                  :key="idx"
+                  class="btn"
+                  :class="idx === 0 ? 'btn-primary' : 'btn-ghost'"
+                  @click="handleApproval(option)"
+                >
+                  {{ option }}
+                </button>
+              </div>
+            </template>
           </div>
         </div>
         <div class="modal-actions">
@@ -214,6 +241,17 @@ import { parseStack } from '../utils/project'
 import { projectStatusLabel, projectStageInfo, taskStatusLabel, taskStatusClass } from '../constants/project'
 import ConfirmDialog from '../components/ConfirmDialog.vue'
 import { useConfirm } from '../composables/useConfirm'
+import { useMarkdown } from '../composables/useMarkdown'
+
+// B-260615-25:项目描述 Markdown 渲染(复用 AiChat/TaskDetail 同款渲染器,模块级单例)
+const { renderMd, loadMarkdown, mdReady } = useMarkdown()
+
+// 描述渲染依赖 mdReady 响应式:loadMarkdown 完成前 escapeFallback 纯文本,完成后 mdReady 翻转
+// 触发 computed 重算(B-25 漏响应式致 v-html=renderMd 首次纯文本后不重算,代码块不渲染)
+const renderedDesc = computed(() => {
+  void mdReady.value
+  return renderMd(currentProject.value?.description ?? '')
+})
 
 const route = useRoute()
 const router = useRouter()
@@ -253,29 +291,10 @@ const projectTasks = computed(() =>
 // taskStatusLabel / taskStatusClass 由 ../constants/project 提供
 
 // ── 工作流 ──
-const workflowRunning = ref(false)
-
-const demoDag = {
-  nodes: [
-    { id: 'n1', node_type: 'script', label: '环境检查', config: { command: 'echo "Environment OK"', timeout_secs: 10 } },
-    { id: 'n2', node_type: 'script', label: '运行测试', config: { command: 'echo "Tests passed"', timeout_secs: 10 } },
-    { id: 'n3', node_type: 'script', label: '构建产物', config: { command: 'echo "Build success"', timeout_secs: 10 } },
-  ],
-  edges: [
-    { from: 'n1', to: 'n2' },
-    { from: 'n2', to: 'n3' },
-  ],
-}
-
-async function runDemoWorkflow() {
-  workflowRunning.value = true
-  store.clearLiveEvents()
-  try {
-    await store.runWorkflow('demo-pipeline', demoDag)
-  } finally {
-    workflowRunning.value = false
-  }
-}
+// demoDag + runDemoWorkflow 已下线（R-PD-2）："script" 节点不再注册到 NodeRegistry，
+// 前端构造含 script 节点的 DagDef 会在后端 build_dag 失败报错。
+// 工作流执行日志面板保留，实时事件展示能力不依赖 demoDag。
+// 待真实工作流需求落地（独立 BuildNode + 审批链）时重建演示入口。
 
 // ── 实时日志格式化 ──
 interface LogEntry {
@@ -397,6 +416,18 @@ async function handleApproval(decision: string) {
   showApprovalDialog.value = false
 }
 
+// F-260615-01: 多选审批
+const isMultipleSelect = computed(() => store.pendingApproval?.select_type === 'multiple')
+const multiDecisions = ref<string[]>([])
+
+async function handleApprovalMulti() {
+  if (multiDecisions.value.length === 0) return
+  // decision 传首项(向后兼容),decisions 透传全量
+  await store.approveHumanApproval(multiDecisions.value[0], undefined, [...multiDecisions.value])
+  multiDecisions.value = []
+  showApprovalDialog.value = false
+}
+
 // ── 取消审批（调 cancel_workflow_node IPC 置节点 Cancelled）──
 async function handleCancelApproval() {
   await store.cancelHumanApproval()
@@ -420,6 +451,8 @@ watch(formattedEvents, () => {
 // 监听审批请求
 watch(() => store.pendingApproval, (newApproval) => {
   if (newApproval) {
+    // F-260615-01: 每次新审批清空多选状态(避免上轮残留)
+    multiDecisions.value = []
     showApprovalDialog.value = true
   }
 }, { immediate: true })
@@ -429,6 +462,7 @@ watch(() => store.pendingApproval, (newApproval) => {
 
 // ── 生命周期 ──
 onMounted(async () => {
+  loadMarkdown() // 后台预热 Markdown 渲染器(模块单例,与 AiChat/TaskDetail 共享),不阻塞
   await store.loadProjects()
   await store.loadTasks() // 全量加载,详情页用 computed 过滤本项目(避免覆盖全局 tasks 单例)
   unlisten = await store.startEventListener()
@@ -456,10 +490,15 @@ onUnmounted(() => {
   gap: var(--df-gap-grid);
 }
 
+/* B-260615-31:字段同行布局(label 固定宽 + 值占余),描述字段 info-block 保持块状 */
 .info-item {
   display: flex;
+  flex-direction: row;
+  align-items: baseline;
+  gap: 12px;
+}
+.info-item.info-block {
   flex-direction: column;
-  gap: 4px;
 }
 
 .info-item .label {
@@ -467,6 +506,8 @@ onUnmounted(() => {
   color: var(--df-text-dim);
   text-transform: uppercase;
   letter-spacing: 0.5px;
+  min-width: 88px;
+  flex-shrink: 0;
 }
 
 .info-item a.idea-link {
@@ -508,6 +549,63 @@ onUnmounted(() => {
   background: rgba(108, 99, 255, 0.08); color: var(--df-text-secondary);
   border: 0.5px solid var(--df-border);
 }
+
+/* ===== 项目描述 Markdown 渲染(B-260615-25,样式同 TaskDetail B-24 .ai-md 收敛) ===== */
+.description.ai-md { font-size: 14px; color: var(--df-text); line-height: 1.6; }
+.description.ai-md :deep(p) { margin: 0 0 6px; }
+.description.ai-md :deep(p:last-child) { margin-bottom: 0; }
+.description.ai-md :deep(ul), .description.ai-md :deep(ol) { margin: 4px 0; padding-left: 20px; }
+.description.ai-md :deep(li) { margin: 2px 0; line-height: 1.5; }
+.description.ai-md :deep(code) {
+  font-family: var(--df-font-mono);
+  font-size: 12px;
+  padding: 1px 5px;
+  background: rgba(255,255,255,0.06);
+  border-radius: var(--df-radius-sm);
+  color: var(--df-accent);
+}
+.description.ai-md :deep(pre) {
+  margin: 8px 0;
+  padding: 10px 12px;
+  background: var(--df-bg);
+  border: 0.5px solid var(--df-border);
+  border-radius: var(--df-radius);
+  overflow-x: auto;
+}
+.description.ai-md :deep(pre code) {
+  padding: 0;
+  background: transparent;
+  border-radius: 0;
+  color: var(--df-text-secondary);
+  font-size: 12px;
+  line-height: 1.5;
+}
+.description.ai-md :deep(blockquote) {
+  margin: 6px 0;
+  padding: 4px 12px;
+  border-left: 2px solid var(--df-accent);
+  color: var(--df-text-secondary);
+}
+.description.ai-md :deep(h1), .description.ai-md :deep(h2), .description.ai-md :deep(h3) {
+  font-weight: 500;
+  color: var(--df-text);
+  margin: 8px 0 4px;
+}
+.description.ai-md :deep(h1) { font-size: 16px; }
+.description.ai-md :deep(h2) { font-size: 14px; }
+.description.ai-md :deep(h3) { font-size: 13px; }
+.description.ai-md :deep(a) { color: var(--df-accent); text-decoration: none; }
+.description.ai-md :deep(a:hover) { text-decoration: underline; }
+.description.ai-md :deep(strong) { font-weight: 500; color: var(--df-text); }
+.description.ai-md :deep(hr) { border: none; border-top: 0.5px solid var(--df-border); margin: 8px 0; }
+.description.ai-md :deep(table) {
+  width: 100%; border-collapse: collapse; margin: 6px 0;
+  font-size: 12px; overflow-x: auto; display: block;
+}
+.description.ai-md :deep(th), .description.ai-md :deep(td) {
+  padding: 4px 8px; border: 0.5px solid var(--df-border); text-align: left;
+}
+.description.ai-md :deep(th) { font-weight: 500; background: var(--df-bg); }
 </style>
 
 <style scoped>
diff --git a/src/views/TaskDetail.vue b/src/views/TaskDetail.vue
new file mode 100644
index 0000000..10ff038
--- /dev/null
+++ b/src/views/TaskDetail.vue
@@ -0,0 +1,362 @@
+<template>
+  <div class="task-detail">
+    <!-- 页面头部 -->
+    <header class="page-header">
+      <div class="header-left">
+        <router-link to="/tasks" class="back-link">← 返回任务列表</router-link>
+        <h1>{{ task?.title ?? '...' }}</h1>
+        <span v-if="task" class="status-tag" :class="taskStatusClass(task.status)">{{ $t(taskStatusLabel(task.status)) }}</span>
+        <span v-if="task" class="priority-badge" :class="priorityClass(task.priority)">{{ priorityLabel(task.priority) }}</span>
+      </div>
+      <div class="header-actions">
+        <button class="btn btn-ghost" type="button" @click="refresh">刷新</button>
+      </div>
+    </header>
+
+    <!-- 加载/错误态 -->
+    <div v-if="loading" class="empty-hint">加载中...</div>
+    <div v-else-if="errorMsg" class="empty-hint error-hint">⚠ {{ errorMsg }}</div>
+
+    <!-- 主体 -->
+    <div v-else-if="task" class="detail-grid">
+      <section class="panel">
+        <div class="panel-header">
+          <h2>任务信息</h2>
+        </div>
+        <div class="task-info">
+          <div class="info-item">
+            <span class="label">标题</span>
+            <span class="value">{{ task.title }}</span>
+          </div>
+          <div class="info-item info-block">
+            <span class="label">描述</span>
+            <!-- B-24:任务描述 Markdown 渲染(## 标题 / - 列表 等),v-html 经 useMarkdown DOMPurify sanitize -->
+            <span
+              class="value description ai-md"
+              v-if="task.description"
+              v-html="renderedDescription"
+            ></span>
+            <span v-else class="value description">—</span>
+          </div>
+          <div class="info-item">
+            <span class="label">状态</span>
+            <span class="value">
+              <span class="status-tag" :class="taskStatusClass(task.status)">{{ $t(taskStatusLabel(task.status)) }}</span>
+            </span>
+          </div>
+          <div class="info-item">
+            <span class="label">优先级</span>
+            <span class="value">
+              <span class="priority-badge" :class="priorityClass(task.priority)">{{ priorityLabel(task.priority) }}</span>
+            </span>
+          </div>
+          <div class="info-item">
+            <span class="label">关联项目</span>
+            <span class="value">
+              <router-link v-if="task.project_id" :to="`/projects/${task.project_id}`" class="project-link">
+                {{ projectName }}
+              </router-link>
+              <span v-else>—</span>
+            </span>
+          </div>
+          <div class="info-item">
+            <span class="label">分支</span>
+            <span class="value">
+              <span v-if="task.branch_name" class="branch-tag">
+                <span class="branch-icon">⑂</span>{{ task.branch_name }}
+              </span>
+              <span v-else>—</span>
+            </span>
+          </div>
+          <div class="info-item">
+            <span class="label">负责人</span>
+            <span class="value">{{ task.assignee ?? '—' }}</span>
+          </div>
+          <div class="info-item">
+            <span class="label">基础分支</span>
+            <span class="value">{{ task.base_branch ?? '—' }}</span>
+          </div>
+          <div class="info-item">
+            <span class="label">工作流定义</span>
+            <span class="value mono">{{ task.workflow_def_id ?? '—' }}</span>
+          </div>
+          <div class="info-item">
+            <span class="label">创建时间</span>
+            <span class="value">{{ formatDate(task.created_at) }}</span>
+          </div>
+          <div class="info-item">
+            <span class="label">更新时间</span>
+            <span class="value">{{ formatDate(task.updated_at) }}</span>
+          </div>
+        </div>
+      </section>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, onMounted, watch } from 'vue'
+import { useRoute } from 'vue-router'
+import { taskApi, projectApi } from '../api'
+import { formatDate } from '../utils/time'
+import { useMarkdown } from '../composables/useMarkdown'
+import {
+  taskStatusLabel,
+  taskStatusClass,
+  priorityLabel,
+  priorityClass,
+} from '../constants/project'
+import type { TaskRecord, ProjectRecord } from '../api/types'
+
+// B-24:任务描述 Markdown 渲染(复用 AiChat 同款渲染器,模块级单例)
+const { renderMd, loadMarkdown, mdReady } = useMarkdown()
+
+// 描述渲染依赖 mdReady 响应式:loadMarkdown 完成前 escapeFallback 纯文本,完成后 mdReady 翻转
+// 触发 computed 重算(B-24 漏响应式致 v-html=renderMd 首次纯文本后不重算,代码块不渲染)
+const renderedDescription = computed(() => {
+  void mdReady.value
+  return renderMd(task.value?.description ?? '')
+})
+
+const route = useRoute()
+
+const loading = ref(true)
+const errorMsg = ref('')
+const task = ref<TaskRecord | null>(null)
+const projects = ref<ProjectRecord[]>([])
+
+const taskId = computed(() => route.params.id as string)
+
+const projectName = computed(() => {
+  const p = projects.value.find(p => p.id === task.value?.project_id)
+  return p?.name ?? task.value?.project_id ?? '—'
+})
+
+async function load() {
+  loading.value = true
+  errorMsg.value = ''
+  try {
+    const [t, ps] = await Promise.all([
+      taskApi.get(taskId.value),
+      // 项目列表用于解析 project_id → 项目名(独立入口,不依赖全局 store)
+      projectApi.list(),
+    ])
+    task.value = t
+    projects.value = ps
+  } catch (e: any) {
+    task.value = null
+    errorMsg.value = e?.toString() ?? '加载失败'
+  } finally {
+    loading.value = false
+  }
+}
+
+function refresh() {
+  load()
+}
+
+// 路由参数变化(id 变化)时重新加载
+watch(taskId, () => { load() })
+
+onMounted(() => {
+  loadMarkdown() // 后台预热 Markdown 渲染器(模块单例,与 AiChat 共享),不阻塞 load
+  load()
+})
+</script>
+
+<style scoped>
+.task-detail { padding: 16px 20px 20px; }
+
+.page-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: var(--df-gap-page);
+}
+.header-left { display: flex; align-items: center; gap: 12px; }
+.back-link { font-size: 13px; color: var(--df-accent); text-decoration: none; white-space: nowrap; }
+.back-link:hover { text-decoration: underline; }
+.page-header h1 { font-size: 24px; font-weight: 500; color: var(--df-text); }
+
+.header-actions { display: flex; gap: 10px; }
+
+/* ===== 按钮 ===== */
+.btn {
+  padding: 8px 16px;
+  border: none;
+  border-radius: var(--df-radius-sm);
+  font-size: 13px;
+  cursor: pointer;
+  transition: all 0.15s;
+}
+.btn-ghost { background: transparent; color: var(--df-text-secondary); border: 0.5px solid var(--df-border); }
+.btn-ghost:hover { background: var(--df-bg-card); color: var(--df-text); }
+
+/* ===== 状态/优先级标签 ===== */
+.status-tag {
+  font-size: 11px; font-weight: 500;
+  padding: 4px 10px;
+  border-radius: var(--df-radius-sm);
+  white-space: nowrap;
+}
+.status-todo { background: rgba(90,99,128,0.2); color: var(--df-text-dim); }
+.status-progress { background: rgba(100,181,246,0.2); color: var(--df-info); }
+.status-review { background: rgba(255,217,61,0.2); color: var(--df-warning); }
+.status-done { background: rgba(100,255,218,0.15); color: var(--df-success); }
+.status-abandoned { background: rgba(255,107,107,0.2); color: var(--df-danger); }
+
+.priority-badge {
+  font-size: 10px; font-weight: 500;
+  padding: 1px 6px;
+  border-radius: var(--df-radius-xs);
+}
+.priority-critical { background: rgba(255,107,107,0.2); color: var(--df-danger); }
+.priority-high { background: rgba(255,152,0,0.2); color: #ff9800; }
+.priority-medium { background: rgba(100,181,246,0.2); color: var(--df-info); }
+.priority-low { background: rgba(90,99,128,0.2); color: var(--df-text-dim); }
+
+/* ===== 面板 ===== */
+.detail-grid { display: grid; grid-template-columns: 1fr; gap: var(--df-gap-grid); }
+
+.panel {
+  background: var(--df-bg-card);
+  border: 0.5px solid var(--df-border);
+  border-radius: var(--df-radius-lg);
+  padding: var(--df-pad-panel);
+}
+.panel-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: var(--df-gap-head);
+}
+.panel-header h2 { font-size: 15px; font-weight: 500; }
+
+/* ===== 信息列表 ===== */
+.task-info {
+  display: flex;
+  flex-direction: column;
+  gap: var(--df-gap-grid);
+}
+/* B-260615-31:字段同行布局(label 固定宽 + value 占余),描述字段 info-block 保持块状 */
+.info-item {
+  display: flex;
+  flex-direction: row;
+  align-items: baseline;
+  gap: 12px;
+}
+.info-item.info-block {
+  flex-direction: column;
+}
+.info-item .label {
+  font-size: 12px;
+  color: var(--df-text-dim);
+  text-transform: uppercase;
+  letter-spacing: 0.5px;
+  min-width: 88px;
+  flex-shrink: 0;
+}
+.info-item .value { font-size: 14px; color: var(--df-text); flex: 1; min-width: 0; }
+/* B-24 漏 white-space 覆盖致 v-html 后 HTML 标签间 \n 被 pre-wrap 渲染为空行间距——移除 pre-wrap,描述由 .ai-md 接管(line-height 1.5 对齐 AiChat li) */
+.info-item .value.description { line-height: 1.5; }
+
+/* ===== 任务描述 Markdown 渲染(B-24,样式同 AiChat .ai-md 收敛) ===== */
+.description.ai-md :deep(p) { margin: 0 0 6px; }
+.description.ai-md :deep(p:last-child) { margin-bottom: 0; }
+.description.ai-md :deep(ul), .description.ai-md :deep(ol) { margin: 4px 0; padding-left: 20px; }
+.description.ai-md :deep(li) { margin: 2px 0; line-height: 1.5; }
+.description.ai-md :deep(code) {
+  font-family: var(--df-font-mono);
+  font-size: 12px;
+  padding: 1px 5px;
+  background: rgba(255,255,255,0.06);
+  border-radius: var(--df-radius-sm);
+  color: var(--df-accent);
+}
+.description.ai-md :deep(pre) {
+  margin: 8px 0;
+  padding: 10px 12px;
+  background: var(--df-bg);
+  border: 0.5px solid var(--df-border);
+  border-radius: var(--df-radius);
+  overflow-x: auto;
+}
+.description.ai-md :deep(pre code) {
+  padding: 0;
+  background: transparent;
+  border-radius: 0;
+  color: var(--df-text-secondary);
+  font-size: 12px;
+  line-height: 1.5;
+}
+.description.ai-md :deep(blockquote) {
+  margin: 6px 0;
+  padding: 4px 12px;
+  border-left: 2px solid var(--df-accent);
+  color: var(--df-text-secondary);
+}
+.description.ai-md :deep(h1), .description.ai-md :deep(h2), .description.ai-md :deep(h3) {
+  font-weight: 500;
+  color: var(--df-text);
+  margin: 8px 0 4px;
+}
+.description.ai-md :deep(h1) { font-size: 16px; }
+.description.ai-md :deep(h2) { font-size: 14px; }
+.description.ai-md :deep(h3) { font-size: 13px; }
+.description.ai-md :deep(a) {
+  color: var(--df-accent);
+  text-decoration: none;
+}
+.description.ai-md :deep(a:hover) { text-decoration: underline; }
+.description.ai-md :deep(strong) { font-weight: 500; color: var(--df-text); }
+.description.ai-md :deep(hr) {
+  border: none;
+  border-top: 0.5px solid var(--df-border);
+  margin: 8px 0;
+}
+.description.ai-md :deep(table) {
+  width: 100%;
+  border-collapse: collapse;
+  margin: 6px 0;
+  font-size: 12px;
+  overflow-x: auto;
+  display: block;
+}
+.description.ai-md :deep(th), .description.ai-md :deep(td) {
+  padding: 4px 8px;
+  border: 0.5px solid var(--df-border);
+  text-align: left;
+}
+.description.ai-md :deep(th) {
+  font-weight: 500;
+  background: var(--df-bg);
+}
+
+.project-link {
+  color: var(--df-accent);
+  text-decoration: none;
+  font-weight: 500;
+}
+.project-link:hover { text-decoration: underline; }
+
+.branch-tag {
+  display: inline-flex;
+  align-items: center;
+  gap: 3px;
+  font-size: 12px;
+  color: var(--df-text-secondary);
+  background: rgba(108, 99, 255, 0.06);
+  padding: 2px 8px;
+  border-radius: var(--df-radius-xs);
+  font-family: monospace;
+}
+.branch-icon { color: var(--df-accent); }
+
+.mono { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 12px; }
+
+.empty-hint {
+  text-align: center; padding: 24px 12px;
+  font-size: 13px; color: var(--df-text-dim);
+}
+.error-hint { color: var(--df-danger); }
+</style>
diff --git a/src/views/Tasks.vue b/src/views/Tasks.vue
index 1bbdd9e..7efb6c5 100644
--- a/src/views/Tasks.vue
+++ b/src/views/Tasks.vue
@@ -49,7 +49,7 @@
           <span class="group-count">{{ $t('tasks.group.taskCount', { n: group.tasks.length }) }}</span>
         </div>
         <div class="task-list">
-          <div class="task-item" v-for="task in group.tasks" :key="task.id">
+          <div class="task-item" v-for="task in group.tasks" :key="task.id" @click="router.push(`/tasks/${task.id}`)">
             <div class="task-main">
               <div class="task-title-row">
                 <span class="task-title">{{ task.title }}</span>
@@ -101,13 +101,15 @@
 </template>
 
 <script setup lang="ts">
-import { ref, computed, onMounted } from 'vue'
+import { ref, computed, onMounted, watch } from 'vue'
+import { useRouter } from 'vue-router'
 import { useI18n } from 'vue-i18n'
 import { useProjectStore } from '../stores/project'
 import { formatRelativeZh } from '../utils/time'
 import { taskStatusLabel as statusLabel, taskStatusClass, priorityLabel, priorityClass } from '../constants/project'
 import type { TaskRecord } from '../api/types'
 
+const router = useRouter()
 const store = useProjectStore()
 const { t } = useI18n()
 
@@ -209,6 +211,11 @@ async function confirmCreate() {
   showCreateModal.value = false
 }
 
+// B-260615-29: 切换项目筛选时按 projectId 重载(避免仅前端 filter,跨项目视图不同步)
+watch(activeProject, (key) => {
+  store.loadTasks(key === 'all' ? undefined : key)
+})
+
 onMounted(async () => {
   await Promise.all([store.loadProjects(), store.loadTasks()])
 })