Keep IM tool approvals in chat and add WhatsApp default model.

Claim in-flight IM turns before ownership flips active so approvals no longer stick only in DSH Web, auto-recover stale session models once, and let WhatsApp bots pick a shared default model for new sessions.

Co-authored-by: Cursor <cursoragent@cursor.com>

plugin-src/client/default-model.js

@@ -0,0 +1,105 @@
+import * as React from 'react';
+
+import {
+  defaultModelKey,
+  normalizeDefaultModel,
+  normalizeModelCatalog,
+} from '../../src/channels/shared/default-model.mjs';
+import { h } from './i18n.js';
+
+export const SET_DEFAULT_MODEL_ENDPOINT = 'bot.model.set';
+
+export const EMPTY_MODEL_CATALOG = Object.freeze({
+  groups: Object.freeze([]),
+  failures: Object.freeze([]),
+  items: Object.freeze([]),
+});
+
+export const ModelCatalogContext = React.createContext(EMPTY_MODEL_CATALOG);
+
+export function normalizeDefaultModelSelection(value) {
+  return normalizeDefaultModel(value);
+}
+
+export function normalizeHostModelCatalog(value) {
+  return normalizeModelCatalog(value);
+}
+
+export function DefaultModelEditor({ defaultModel = null, disabled = false, onSave }) {
+  const catalog = React.useContext(ModelCatalogContext) ?? EMPTY_MODEL_CATALOG;
+  const helpId = React.useId();
+  const current = normalizeDefaultModel(defaultModel);
+  const currentKey = defaultModelKey(current);
+  const [saving, setSaving] = React.useState(false);
+  const [error, setError] = React.useState(null);
+
+  const items = [];
+  const seen = new Set();
+  for (const item of Array.isArray(catalog.items) ? catalog.items : []) {
+    if (!item?.key || seen.has(item.key)) continue;
+    seen.add(item.key);
+    items.push(item);
+  }
+  const currentUnavailable = Boolean(currentKey && !seen.has(currentKey));
+  if (currentUnavailable && current) {
+    items.push({
+      key: currentKey,
+      provider: current.provider,
+      model: current.model,
+      label: currentKey,
+      unavailable: true,
+    });
+  }
+
+  const change = async (event) => {
+    const nextKey = event.target.value;
+    if (nextKey === currentKey || saving || disabled) return;
+    setSaving(true);
+    setError(null);
+    try {
+      await onSave?.(nextKey ? normalizeDefaultModel(nextKey) : null);
+    } catch (cause) {
+      setError(cause?.message ?? '默认模型修改失败，请重试。');
+    } finally {
+      setSaving(false);
+    }
+  };
+
+  return h('div', { className: 'dim-preset' },
+    h('div', { className: 'dim-presetHeader' },
+      h('span', { className: 'dim-presetTitle' },
+        h('span', null, '默认模型'),
+        h('span', { className: 'dim-presetHelp' },
+          h('button', {
+            type: 'button',
+            className: 'dim-presetHelpButton',
+            'aria-label': '查看默认模型说明',
+            'aria-describedby': helpId,
+          }, h('span', { 'aria-hidden': 'true' }, '?')),
+          h('span', {
+            id: helpId,
+            className: 'dim-presetTooltip',
+            role: 'tooltip',
+          }, '为该 WhatsApp 机器人的新建会话指定模型，避免每人各自 /model。已有会话需先 /new 再发消息才会生效。'))),
+      saving ? h('span', { className: 'dim-presetStatus' }, '保存中…') : null),
+    React.createElement('select', {
+      className: 'dim-presetSelect',
+      value: currentKey,
+      disabled: disabled || saving,
+      'aria-label': '默认模型',
+      onChange: (event) => { void change(event); },
+    },
+      h('option', { value: '' }, '跟随 Host 默认'),
+      ...items.map((item) => h(
+        'option',
+        { key: item.key, value: item.key },
+        item.unavailable ? [item.key, '（已不可用）'] : item.label,
+      )),
+    ),
+    error || currentUnavailable ? h(
+      'p',
+      { className: 'dim-presetError', role: error ? 'alert' : 'status' },
+      error ?? '当前默认模型已不可用，请选择其他模型或跟随 Host 默认。',
+    ) : null,
+  );
+}