fix(weixin): align long-reply limits across runtime

plugin-src/host/channels/weixin/production.mjs

@@ -5,7 +5,10 @@ import { join, resolve } from 'node:path';
 import { WeixinConfigStore } from '../../../../src/channels/weixin/config-store.mjs';
 import { HarnessClient } from '../../../../src/channels/weixin/harness-client.mjs';
 import { WeixinStateStore } from '../../../../src/channels/weixin/state-store.mjs';
-import { createWeixinApi } from '../../../../src/channels/weixin/weixin-api.mjs';
+import {
+  createWeixinApi,
+  DEFAULT_WEIXIN_MAX_MESSAGE_CHARS,
+} from '../../../../src/channels/weixin/weixin-api.mjs';
 import { WeixinController } from '../../../../src/channels/weixin/weixin-controller.mjs';
 import { WeixinRuntime } from '../../../../src/channels/weixin/weixin-runtime.mjs';
 import {
@@ -113,7 +116,7 @@ export async function createProductionController(ctx, config = {}, internals = {
         harness: workspaceScope.harness,
         state: workspaceScope.state,
         replyTimeoutMs: config.replyTimeoutMs ?? 600_000,
-        maxMessageChars: config.maxMessageChars ?? 4_000,
+        maxMessageChars: config.maxMessageChars ?? DEFAULT_WEIXIN_MAX_MESSAGE_CHARS,
         logger: {
           error: (...args) => logger.error?.(`[${botId}]`, ...args),
           warn: (...args) => logger.warn?.(`[${botId}]`, ...args),

src/channels/weixin/weixin-api.mjs

@@ -12,6 +12,7 @@ export const WEIXIN_QR_BASE_URL = 'https://ilinkai.weixin.qq.com/';
 export const WEIXIN_PROTOCOL_VERSION = '2.4.6';
 export const DEFAULT_BOT_TYPE = '3';
 export const WEIXIN_CDN_BASE_URL = 'https://novac2c.cdn.weixin.qq.com/c2c';
+export const DEFAULT_WEIXIN_MAX_MESSAGE_CHARS = 1_800;
 
 const WEIXIN_CDN_HOST = 'novac2c.cdn.weixin.qq.com';
 
@@ -744,7 +745,7 @@ export function weixinMessageId(message) {
   return nonEmptyString(message?.client_id);
 }
 
-export function splitWeixinText(text, maxChars = 4_000) {
+export function splitWeixinText(text, maxChars = DEFAULT_WEIXIN_MAX_MESSAGE_CHARS) {
   if (text.length <= maxChars) return [text];
   const chunks = [];
   let remaining = text;

src/channels/weixin/weixin-bridge.mjs

@@ -1,4 +1,5 @@
 import {
+  DEFAULT_WEIXIN_MAX_MESSAGE_CHARS,
   extractWeixinFiles,
   extractWeixinImages,
   extractWeixinText,
@@ -184,7 +185,7 @@ export class WeixinHarnessBridge {
     status = createWeixinBridgeStatus(),
     logger = console,
     replyTimeoutMs = 600_000,
-    maxMessageChars = 1_800,
+    maxMessageChars = DEFAULT_WEIXIN_MAX_MESSAGE_CHARS,
     signal,
   }) {
     if (!api || typeof api.sendText !== 'function') throw new TypeError('Weixin API is required');

src/channels/weixin/weixin-runtime.mjs

@@ -1,4 +1,4 @@
-import { WeixinApiError } from './weixin-api.mjs';
+import { DEFAULT_WEIXIN_MAX_MESSAGE_CHARS, WeixinApiError } from './weixin-api.mjs';
 import { createWeixinBridgeStatus, WeixinHarnessBridge } from './weixin-bridge.mjs';
 import {
   connectionTestTarget,
@@ -109,7 +109,7 @@ export class WeixinRuntime {
     state,
     logger = console,
     replyTimeoutMs = 600_000,
-    maxMessageChars = 4_000,
+    maxMessageChars = DEFAULT_WEIXIN_MAX_MESSAGE_CHARS,
     startRetryDelaysMs,
   }) {
     if (!api || !config || !token || !harness || !state) {

test/channels/weixin/production.test.mjs

@@ -63,6 +63,8 @@ test('Weixin production has no per-bot result-file Gate', async (t) => {
 
   assert.equal(Object.hasOwn(runtimes[0], 'outboundArtifactsEnabled'), false);
   assert.equal(Object.hasOwn(runtimes[1], 'outboundArtifactsEnabled'), false);
+  assert.equal(runtimes[0].maxMessageChars, 1_800);
+  assert.equal(runtimes[1].maxMessageChars, 1_800);
   await production.close();
 
   const productionWithDefault = await createProductionController(ctx, { dataDir }, internals);
@@ -72,5 +74,6 @@ test('Weixin production has no per-bot result-file Gate', async (t) => {
     token: 'host-only',
   });
   assert.equal(Object.hasOwn(runtimes[2], 'outboundArtifactsEnabled'), false);
+  assert.equal(runtimes[2].maxMessageChars, 1_800);
   await productionWithDefault.close();
 });

test/channels/weixin/weixin-runtime.test.mjs

@@ -85,6 +85,7 @@ test('runtime verifies the token, consumes getUpdates, replies, persists cursor,
   const calls = [];
   let pollCount = 0;
   let askSignal;
+  const answer = '答'.repeat(2_000);
   const stateData = { cursor: '', seen: new Set(), session: null };
   const api = {
     notifyStart: async (request) => calls.push(['start', request.token]),
@@ -133,7 +134,7 @@ test('runtime verifies the token, consumes getUpdates, replies, persists cursor,
       createSession: async () => 'session-1',
       ask: async (_sessionId, _text, options) => {
         askSignal = options.signal;
-        return '回答';
+        return answer;
       },
     },
     state,
@@ -145,10 +146,14 @@ test('runtime verifies the token, consumes getUpdates, replies, persists cursor,
   await flush();
   await flush();
   assert.equal(stateData.cursor, 'cursor-next');
-  assert.deepEqual(calls.slice(0, 2), [
-    ['start', 'bot-token'],
-    ['send', '回答', 'context-7'],
+  assert.equal(calls[0][0], 'start');
+  assert.deepEqual(calls.slice(1, 3).map((call) => call[1].length), [1_800, 200]);
+  assert.equal(calls.slice(1, 3).map((call) => call[1]).join(''), answer);
+  assert.deepEqual(calls.slice(1, 3).map((call) => call[2]), [
+    'context-7',
+    'context-7',
   ]);
+  assert.equal(runtime.status.messagesReplied, 1);
   assert.equal(askSignal.aborted, false);
   await runtime.stop();
   assert.equal(askSignal.aborted, true);