fix: surface actionable channel message errors

plugin-src/client/channels/shared/token-api.js

@@ -1,4 +1,5 @@
 import { normalizeAgentPresetCatalog, normalizeAgentPresetId, SET_AGENT_PRESET_ENDPOINT } from '../../agent-preset.js';
+import { normalizeLastMessageError } from '../../last-message-error.js';
 
 const ACCOUNT_STATES = new Set(['connected', 'connecting', 'offline', 'error']);
 
@@ -68,6 +69,7 @@ export function createTokenChannelApi(channel, connectionSummary, {
         ),
         lastCheckedAt: timestamp(value.health?.lastCheckedAt),
       },
+      lastMessageError: normalizeLastMessageError(value.lastMessageError),
       error: isRecord(value.error) ? {
         code: text(value.error.code, `${channel.toUpperCase()}_ACCOUNT_ERROR`, 80),
         message: text(value.error.message, `${channel}连接尚未就绪`),

plugin-src/client/channels/shared/token-channel.js

@@ -10,7 +10,11 @@ import {
   EMPTY_AGENT_PRESET_CATALOG,
 } from '../../agent-preset.js';
 import { useWorkspaceSnapshotFence } from '../../workspace-snapshot-fence.js';
-import { BotStatusMeta, ChannelListHeading } from '../../channel-card-meta.js';
+import {
+  BotStatusMeta,
+  ChannelListHeading,
+  LastMessageErrorSummary,
+} from '../../channel-card-meta.js';
 
 const Button = React.forwardRef(function Button(
   { children, kind = 'secondary', className = '', ...props },
@@ -121,6 +125,10 @@ export function createTokenChannelSettings(definition) {
                 disabled: Boolean(busy),
               }, '移除接入')),
             summary ? h('div', { className: 'ddt-summary dim-cardSummary' }, summary) : null,
+            account.lastMessageError ? h(LastMessageErrorSummary, {
+              className: 'ddt-summary',
+              error: account.lastMessageError,
+            }) : null,
             testNotice ? h('div', {
               className: 'ddt-summary dim-cardFeedback',
               role: 'status',