新增: 批次工作落地(推进链/评估闭环/事件总线/并发/加固) + 技术债清理 + 文档整理

后端:
- 工作流推进链(D-03):advance_task/状态机/闸门走 df-nodes Node trait,conditions 条件引擎扩展
- 想法评估闭环:启发式评分+对抗评估,df-ideas/scoring + df-storage/idea_eval_repo + idea 前端打通
- 全局事件数据总线:df-ai/context+context_helpers+augmentation 跨模块解耦
- AI planner/plan_hint/intent:aichat B 路线并行多轮基础
- patch_file 加固(TD-03/04):读改写整体锁防 lost update,expected_hash 合约闭环
- 压缩超时兜底(F-15 卡死根治)
- F-09 多会话并发:LlmConcurrency per-conv + streamingGuard 前端守护 + verify 脚本
- 知识注入 DRY/skills/audit 扩展

清理:
- aichat 技术债(误报 allow/死导入/过时注释 30 项)
- URGENT.md 删除(11 项加急全解决/迁 todo)
- 文档整理(todo/待决策/待审查/ARCHITECTURE/INDEX + 总线/技术债审查新文档)

src/composables/ai/useAiConversations.ts

@@ -9,6 +9,7 @@ import { useAppSettingsStore } from '@/stores/appSettings'
 import { state } from '@/stores/ai'
 import { notifyConversationChanged } from './useAiEvents'
 import { persistUiState } from './useAiPanel'
+import { setStreaming } from './streamingGuard'
 import { nextMsgId } from './aiShared'
 import { t } from '@/i18n/i18n-helpers'
 import type { AiMessage, AiToolCallInfo } from '@/api/types'
@@ -70,7 +71,7 @@ async function newConversation() {
   state.messages = []
   state.currentText = ''
   state.pendingApprovals = []
-  state.streaming = false
+  setStreaming(false, { reason: 'newConversation' })
   // F-09 决策e(真并发):newConversation 对齐 switchConversation 并行语义——旧 conv 后台 loop 继续,
   // 不清 generatingConvs(保留旧 conv 生成态跟踪,侧栏显双会话生成,AiCompleted/AiError 按
   // conversation_id 正确收尾旧 conv)。原 state.generatingConvs.clear() 是 A 路线 F-260616-09
@@ -96,6 +97,12 @@ export async function switchConversation(id: string) {
   if (mySwitchId !== _latestSwitchId) return
   state.activeConversationId = id
   void appSettings.set('df-ai-active-conv', id)
+  // P1#6 技术债审查(2026-06-21):streaming 是全局单值,切到非生成会话需按目标 conv 生成态重算,
+  // 否则残留 stop 按钮(ChatInput.vue:88 v-if=streaming)→ 点击 store.stopChat 传 activeConversationId
+  // 发错会话。对齐 newConversation 复位语义;目标在后台生成时保留 true(stop/流式显示正确)。
+  // 根治归 F-09 B 路线:streaming 改 per-conv 态。此处为 A 路线过渡补丁。
+  // 走 setStreaming guard 收敛写入口(convId=id 联动幂等——has(id) 决定值,add/delete 幂等无副作用)。
+  setStreaming(state.generatingConvs.has(id), { convId: id, reason: 'switchConversation-recompute' })
 
   try {
     const rawMsgs = typeof detail.messages === 'string'
@@ -181,18 +188,41 @@ export async function switchConversation(id: string) {
   state.currentText = ''
   // 恢复该对话积压的待审批:重启后后端从审计表重建了 pending_approvals,
   // 此处查回并把对应 toolCard.status 置 pending_approval,使审批卡片重新可见
+  // 阶段4:按 IPC 返的 kind 渲染——'path' 类显 once/always/deny(tc.kind='path' + 推 path/dir 文案),
+  // 'risk' 类显 approve/reject(tc.kind='risk'/缺省)。对齐阶段3b 统一审批模型(两 kind 都可恢复)。
   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) {
+      // kind 索引:tool_call_id → kind('risk'/'path'),供恢复 tc/pendingApprovals 按类型渲染
+      const pendingKindMap = new Map(pending.map(p => [p.tool_call_id, p.kind]))
       const pendingIds = new Set(pending.map(p => p.tool_call_id))
       const restored: AiToolCallInfo[] = []
       for (const m of state.messages) {
         for (const tc of (m.toolCalls || [])) {
           if (pendingIds.has(tc.id)) {
             tc.status = 'pending_approval'
-            restored.push({ id: tc.id, name: tc.name, args: tc.args, status: 'pending_approval' })
+            const kind = pendingKindMap.get(tc.id) ?? 'risk'
+            tc.kind = kind
+            // path 类审批:从 tc.args.path 推 path/dir 文案(后端 IPC 仅返 kind,无 dir/path;
+            // 此处从工具参数派生,供 ToolCard 审批提示展示)。缺 path 参数的 path 类回退空。
+            if (kind === 'path') {
+              const p = (tc.args as { path?: string } | null)?.path
+              tc.path = p
+              tc.dir = p ?? undefined
+              tc.reason = t('aiChat.dirAuthHint', { tool: tc.name, path: p ?? '' })
+            }
+            restored.push({
+              id: tc.id,
+              name: tc.name,
+              args: tc.args,
+              status: 'pending_approval',
+              kind,
+              path: tc.path,
+              dir: tc.dir,
+              reason: tc.reason,
+            })
           }
         }
       }