feat: add multi-terminal workbar and resizable sidebars

The assistant workbar now uses persistent application tabs with a permanent catalog entry point and supports multiple local or managed SSH terminals bound to the current project. Terminal sessions flow through the Main, preload, and renderer boundaries with bounded output, resize, lifecycle, and cleanup behavior.

The main sidebar and Magic Notes list now support pointer and keyboard resizing. Magic Notes can also hide and restore its list, remembers the chosen layout, and stacks its panes when the available width is narrow.

Closing a terminal tab ends its Shell session. Restored terminal tabs do not restart prior Shell processes and require an explicit reconnect.

Release note: 助手工作栏现可通过“+”打开多个本机或当前远程项目终端；主侧栏和魔法笔记列表支持拖拽调宽，魔法笔记列表可隐藏并记住布局。

src/main/ipc.ts

@@ -83,6 +83,14 @@ import {
   knowledgeTaskItemSchema
 } from '../shared/knowledge-task-contracts'
 import { ipcChannels } from '../shared/ipc-channels'
+import {
+  terminalAckRequestSchema,
+  terminalCloseRequestSchema,
+  terminalCreateRequestSchema,
+  terminalResizeRequestSchema,
+  terminalSnapshotRequestSchema,
+  terminalWriteRequestSchema
+} from '../shared/terminal-contracts'
 import {
   browserProfileCreateInputSchema,
   browserProfileRenameInputSchema,
@@ -119,6 +127,7 @@ import {
   agentPackageInventorySchema
 } from '../shared/agent-package-contracts'
 import { assertTrustedSender } from './trusted-ipc-sender'
+import type { TerminalSessionManager } from './terminal/terminal-session-manager'
 import { releaseNotesAcknowledgeSchema } from '../shared/release-notes-contracts'
 import {
   speechModelActionInputSchema,
@@ -1088,7 +1097,8 @@ export function registerIpcHandlers(
   remoteAgentConnectionManager?: Pick<
     RemoteAgentConnectionManager,
     'getHostConnectionState' | 'onHostConnectionStateChange'
-  >
+  >,
+  terminalSessionManager?: TerminalSessionManager
 ): () => Promise<void> {
   type ActiveRequestLease = {
     controller: AbortController
@@ -1097,6 +1107,12 @@ export function registerIpcHandlers(
     release(): void
   }
   const activeRequests = new Map<string, ActiveRequestLease>()
+  const requireTerminalSessionManager = (): TerminalSessionManager => {
+    if (!terminalSessionManager) {
+      throw new Error('终端服务不可用')
+    }
+    return terminalSessionManager
+  }
   const activeRequestConversations = new Map<
     string,
     ActiveRequestLease
@@ -1224,6 +1240,7 @@ export function registerIpcHandlers(
     (channel) =>
       channel !== ipcChannels.agentEvent &&
       channel !== ipcChannels.browserState &&
+      channel !== ipcChannels.terminalEvent &&
       channel !== ipcChannels.conversationNew &&
       channel !== ipcChannels.settingsOpen &&
       channel !== ipcChannels.versionCheckResult &&
@@ -3347,6 +3364,92 @@ export function registerIpcHandlers(
     ])
   })
 
+  registerHandler(
+    ipcChannels.terminalCreate,
+    async (event, input: unknown) => {
+      assertTrustedSender(event, window)
+      const manager = requireTerminalSessionManager()
+      const snapshot = await manager.create(
+        event.sender.id,
+        terminalCreateRequestSchema.parse(input)
+      )
+      setImmediate(() => {
+        if (
+          !window.isDestroyed() &&
+          event.sender === window.webContents &&
+          !event.sender.isDestroyed()
+        ) {
+          manager.enableEventDelivery(
+            event.sender.id,
+            snapshot.sessionId
+          )
+        }
+      })
+      return snapshot
+    }
+  )
+
+  registerHandler(ipcChannels.terminalWrite, (event, input: unknown) => {
+    assertTrustedSender(event, window)
+    const manager = requireTerminalSessionManager()
+    const request = terminalWriteRequestSchema.parse(input)
+    manager.write(
+      event.sender.id,
+      request.sessionId,
+      request.data
+    )
+  })
+
+  registerHandler(ipcChannels.terminalResize, (event, input: unknown) => {
+    assertTrustedSender(event, window)
+    const manager = requireTerminalSessionManager()
+    const request = terminalResizeRequestSchema.parse(input)
+    manager.resize(event.sender.id, request.sessionId, {
+      cols: request.cols,
+      rows: request.rows
+    })
+  })
+
+  registerHandler(
+    ipcChannels.terminalSnapshot,
+    (event, input: unknown) => {
+      assertTrustedSender(event, window)
+      const manager = requireTerminalSessionManager()
+      const request = terminalSnapshotRequestSchema.parse(input)
+      return manager.snapshot(
+        event.sender.id,
+        request.sessionId
+      )
+    }
+  )
+
+  registerHandler(
+    ipcChannels.terminalAck,
+    (event, input: unknown) => {
+      assertTrustedSender(event, window)
+      const manager = requireTerminalSessionManager()
+      const request = terminalAckRequestSchema.parse(input)
+      manager.acknowledge(
+        event.sender.id,
+        request.sessionId,
+        request.sequence
+      )
+    }
+  )
+
+  registerHandler(
+    ipcChannels.terminalClose,
+    async (event, input: unknown) => {
+      assertTrustedSender(event, window)
+      const manager = requireTerminalSessionManager()
+      const request = terminalCloseRequestSchema.parse(input)
+      return manager.close(
+        event.sender.id,
+        request.sessionId
+      )
+    }
+  )
+
   registerHandler(
     ipcChannels.browserInteract,
     async (event, input: unknown) => {
@@ -7769,6 +7872,7 @@ export function registerIpcHandlers(
     approvalBroker.clear()
     goodbuddyConfigService?.clear()
     pendingGoodBuddyConfigReload = false
+    await terminalSessionManager?.closeOwner(window.webContents.id)
     await requestRendererPersistence()
     await waitForRendererQuiescence()
     for (const channel of channels) {