feat(im): resume project session history (#1286)

Add shared project and session selection across IM adapters, preserve bindings on
failed restoration, and synchronize permissions with desktop clients.

Fixes #1286

adapters/wechat/index.ts

@@ -16,6 +16,8 @@ import {
   parsePermissionCommand,
 } from '../common/permission.js'
 import { SessionStore } from '../common/session-store.js'
+import { syncImPermissionState } from '../common/permission-sync.js'
+import { SessionSelectionController } from '../common/session-selection.js'
 import { createAdapterClient } from '../common/adapter-client.js'
 import { restoreStoredSessionBinding } from '../common/session-recovery.js'
 import { isAllowedUser, tryPair } from '../common/pairing.js'
@@ -66,6 +68,21 @@ attachmentStore.gc().catch((err) => {
   console.warn('[WeChat] AttachmentStore.gc failed:', err instanceof Error ? err.message : err)
 })
 
+const sessionSelectionController = new SessionSelectionController({
+  httpClient,
+  bridge,
+  sessionStore,
+  sendNotice: async (chatId, text) => { await sendText(chatId, text) },
+  onServerMessage: handleServerMessage,
+  clearTransientState: clearTransientChatState,
+  clearProjectSelection: (chatId) => { pendingProjectSelection.delete(chatId) },
+  isBusy: (chatId) => {
+    const runtime = getRuntimeState(chatId)
+    return runtime.state !== 'idle' || runtime.pendingPermissionCount > 0
+      || (pendingPermissions.get(chatId)?.size ?? 0) > 0
+  },
+})
+
 type ChatRuntimeState = {
   state: 'idle' | 'thinking' | 'streaming' | 'tool_executing' | 'permission_pending'
   verb?: string
@@ -277,6 +294,7 @@ async function ensureSession(chatId: string): Promise<boolean> {
 }
 
 async function createSessionForChat(chatId: string, workDir: string): Promise<boolean> {
+  sessionSelectionController.clear(chatId)
   try {
     bridge.resetSession(chatId)
     clearTransientChatState(chatId)
@@ -297,6 +315,7 @@ async function createSessionForChat(chatId: string, workDir: string): Promise<bo
 }
 
 async function showProjectPicker(chatId: string): Promise<void> {
+  sessionSelectionController.clear(chatId)
   try {
     const projects = await httpClient.listRecentProjects()
     if (projects.length === 0) {
@@ -315,6 +334,7 @@ async function showProjectPicker(chatId: string): Promise<void> {
 }
 
 async function startNewSession(chatId: string, query?: string): Promise<void> {
+  sessionSelectionController.clear(chatId)
   bridge.resetSession(chatId)
   sessionStore.delete(chatId)
   clearTransientChatState(chatId)
@@ -351,10 +371,12 @@ async function startNewSession(chatId: string, query?: string): Promise<void> {
 
 async function handleServerMessage(chatId: string, msg: ServerMessage): Promise<void> {
   const runtime = getRuntimeState(chatId)
+  if (syncImPermissionState(chatId, msg, runtime, pendingPermissions)) return
 
   switch (msg.type) {
     case 'connected':
       break
+
     case 'status':
       runtime.state = msg.state
       runtime.verb = typeof msg.verb === 'string' ? msg.verb : undefined
@@ -491,6 +513,7 @@ async function routeUserMessage(message: WechatMessage): Promise<void> {
       }
       clearTransientChatState(chatId)
       const sent = bridge.sendUserMessage(chatId, '/clear')
+      if (sent) getRuntimeState(chatId).state = 'thinking'
       await sendText(chatId, sent ? '已清空当前会话上下文。' : '无法发送 /clear，请先发送 /new 重新连接会话。')
       return
     }
@@ -511,6 +534,8 @@ async function routeUserMessage(message: WechatMessage): Promise<void> {
       await sendText(chatId, sent ? `${formatPermissionDecisionStatus(permissionDecision)}。` : '权限响应发送失败，请检查会话状态。')
       return
     }
+    if (!hasAttachments && await sessionSelectionController.handleInput(chatId, text)) return
+
     if (!hasAttachments && pendingProjectSelection.has(chatId)) {
       await startNewSession(chatId, text)
       return
@@ -523,6 +548,7 @@ async function routeUserMessage(message: WechatMessage): Promise<void> {
     if (!effectiveText && attachments.length === 0) return
     typingController.start(chatId)
     const sent = bridge.sendUserMessage(chatId, effectiveText, attachments.length ? attachments : undefined)
+    if (sent) getRuntimeState(chatId).state = 'thinking'
     if (!sent) await sendText(chatId, '消息发送失败，连接可能已断开。请发送 /new 重新开始。')
   })
 }
@@ -612,9 +638,9 @@ function redactChatId(chatId: string): string {
 
 console.log('[WeChat] Starting adapter...')
 console.log(`[WeChat] Account: ${accountId}`)
-void pollLoop()
+if (import.meta.main || process.argv.includes('--wechat')) void pollLoop()
 
-process.on('SIGINT', () => {
+if (import.meta.main || process.argv.includes('--wechat')) process.on('SIGINT', () => {
   console.log('[WeChat] Shutting down...')
   stopped = true
   typingController.destroy()
@@ -622,3 +648,5 @@ process.on('SIGINT', () => {
   dedup.destroy()
   process.exit(0)
 })
+
+export { bridge, dedup, sessionStore, sessionSelectionController, handleServerMessage, getRuntimeState, clearTransientChatState, createSessionForChat, showProjectPicker, routeUserMessage, startNewSession, typingController }