Internalize all IM channel implementations

test/channels/weixin/harness-client.test.mjs

@@ -0,0 +1,48 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import { HarnessReplyTracker } from '../../../src/channels/weixin/harness-client.mjs';
+
+test('reply tracker associates only the Harness turn created by the Weixin prompt RPC', () => {
+  const tracker = new HarnessReplyTracker({ promptRpcId: 'weixin-prompt', afterSeq: 2 });
+  const first = tracker.consume([
+    { event: { seq: 3, type: 'turn/start', data: { turn: 9 } } },
+    { event: {
+      seq: 4,
+      type: 'user/message',
+      data: { turn: 9, source: { rpcId: 'weixin-prompt' } },
+    } },
+    { event: {
+      seq: 5,
+      type: 'assistant/chunk',
+      data: { turn: 9, step: 0, chunk: { type: 'text-delta', index: 0, text: '微信' } },
+    } },
+  ]);
+  assert.deepEqual(first, { type: 'text', text: '微信' });
+  tracker.consume([
+    { event: {
+      seq: 6,
+      type: 'assistant/message',
+      data: { turn: 9, message: { content: [{ type: 'text', text: '微信回复完成' }] } },
+    } },
+    { event: { seq: 7, type: 'turn/end', data: { turn: 9, reason: 'completed' } } },
+  ]);
+  assert.equal(tracker.finished, true);
+  assert.equal(tracker.answer, '微信回复完成');
+});
+
+test('reply tracker ignores interleaved turns and older events', () => {
+  const tracker = new HarnessReplyTracker({ promptRpcId: 'target', afterSeq: 10 });
+  tracker.consume([
+    { event: { seq: 9, type: 'turn/start', data: { turn: 1 } } },
+    { event: { seq: 11, type: 'turn/start', data: { turn: 2 } } },
+    { event: { seq: 12, type: 'user/message', data: { turn: 2, source: { rpcId: 'other' } } } },
+    { event: {
+      seq: 13,
+      type: 'assistant/message',
+      data: { turn: 2, message: { content: [{ type: 'text', text: 'wrong' }] } },
+    } },
+  ]);
+  assert.equal(tracker.answer, '');
+  assert.equal(tracker.finished, false);
+});