feat: add agent preset chat commands

test/channels/weixin/weixin-bridge.test.mjs

@@ -262,11 +262,20 @@ test('Weixin executes /compact for the bound Session without prompting the model
   assert.equal(fixture.seen.has('compact-weixin'), true);
 });
 
-test('Weixin lists models without prompting and help advertises all four commands', async () => {
+test('Weixin lists models and presets without prompting and advertises fast commands', async () => {
   const fixture = stateFixture();
   const sent = [];
+  const presetUpdates = [];
+  let agentPreset = null;
   let asks = 0;
   let creates = 0;
+  const agentPresetCatalog = {
+    defaultId: 'preset-001',
+    items: Array.from({ length: 70 }, (_, index) => ({
+      id: `preset-${String(index + 1).padStart(3, '0')}`,
+      label: `Weixin Preset ${index + 1} ${'x'.repeat(64)}`,
+    })),
+  };
   const bridge = new WeixinHarnessBridge({
     api: { sendText: async (request) => sent.push(request) },
     baseUrl: 'https://ilinkai.weixin.qq.com/',
@@ -281,6 +290,12 @@ test('Weixin lists models without prompting and help advertises all four command
         }],
         failures: [],
       }),
+      agentPresetSettings: async () => ({ agentPreset, agentPresetCatalog }),
+      updateAgentPreset: async (value) => {
+        presetUpdates.push(value);
+        agentPreset = value;
+        return { agentPreset, agentPresetCatalog };
+      },
       createSession: async () => { creates += 1; return 'weixin-session'; },
       ask: async () => { asks += 1; return 'unexpected model reply'; },
     },
@@ -293,12 +308,42 @@ test('Weixin lists models without prompting and help advertises all four command
   assert.equal(creates, 0);
   assert.equal(fixture.sessions.size, 0);
 
+  const presetReplyStart = sent.length;
+  await bridge.accept(message('presets-weixin', '/presetlist'));
+  const presetReplies = sent.slice(presetReplyStart).map((entry) => entry.text);
+  assert.ok(presetReplies.length > 1);
+  assert.match(presetReplies.join('\n'), /preset-070/);
+  assert.equal(asks, 0);
+  assert.equal(creates, 0);
+  assert.equal(fixture.sessions.size, 0);
+
+  await bridge.accept(message('preset-current-weixin', '/preset'));
+  assert.match(sent.at(-1).text, /跟随 Host 默认/);
+  assert.equal(asks, 0);
+  assert.equal(creates, 0);
+
+  const selectReplyStart = sent.length;
+  await bridge.accept(message('preset-select-weixin', '/preset 2'));
+  assert.deepEqual(presetUpdates, ['preset-002']);
+  assert.equal(sent.length, selectReplyStart + 1);
+  assert.match(sent.at(-1).text, /preset-002/);
+
+  const defaultReplyStart = sent.length;
+  await bridge.accept(message('preset-default-weixin', '/preset --default'));
+  assert.deepEqual(presetUpdates, ['preset-002', null]);
+  assert.equal(sent.length, defaultReplyStart + 1);
+  assert.match(sent.at(-1).text, /跟随 Host 默认/);
+  assert.equal(asks, 0);
+  assert.equal(creates, 0);
+  assert.equal(fixture.sessions.size, 0);
+
   await bridge.accept(message('help-models-weixin', '/help'));
   const help = sent.at(-1).text;
-  for (const command of ['/models', '/model', '/stop', '/steer']) {
+  for (const command of ['/models', '/model', '/presetlist', '/preset', '/preset --default', '/stop', '/steer']) {
     assert.equal(help.includes(command), true, command);
   }
   assert.match(help, /\/model 2/);
+  assert.match(help, /\/preset id:<ID>/);
 });
 
 test('bridge maps the scanning Weixin user to one persistent Harness session and echoes context_token', async () => {