feat: add plugin version command

test/channels/dingtalk/dingtalk-bridge.test.mjs

@@ -841,6 +841,7 @@ test('DingTalk lists models and presets without prompting and advertises fast co
   for (const command of [
     '/models', '/model', '/reasoninglist', '/reasonings', '/reasoning',
     '/presetlist', '/preset', '/preset --default', '/stop', '/steer',
+    '/version',
   ]) {
     assert.equal(help.includes(command), true, command);
   }

test/channels/feishu/bridge.test.mjs

@@ -390,7 +390,7 @@ test('Feishu lists models and presets without prompting and advertises fast comm
   for (const command of [
     '/models', '/model', '/reasoninglist', '/reasonings', '/reasoning',
     '/presetlist', '/preset', '/preset --default', '/batch', '/send', '/cancel',
-    '/stop', '/steer',
+    '/stop', '/steer', '/version',
   ]) {
     assert.equal(help.includes(command), true, command);
   }

test/channels/feishu/feishu-cards.test.mjs

@@ -76,6 +76,7 @@ test('menu and card help advertise Agent Preset, reasoning, and batch commands',
   assert.match(help, /\/batch/);
   assert.match(help, /\/send/);
   assert.match(help, /\/cancel/);
+  assert.match(help, /\/version/);
 
   const card = helpCard();
   assert.match(card, /\/reasoninglist/);

test/channels/qq/bridge.test.mjs

@@ -673,6 +673,7 @@ test('QQ lists models and presets without prompting and advertises fast commands
   for (const command of [
     '/models', '/model', '/reasoninglist', '/reasonings', '/reasoning',
     '/presetlist', '/preset', '/preset --default', '/stop', '/steer',
+    '/version',
   ]) {
     assert.equal(help.includes(command), true, command);
   }

test/channels/shared/text-harness-bridge.test.mjs

@@ -3,6 +3,7 @@ import { mkdtemp, rm, writeFile } from 'node:fs/promises';
 import { tmpdir } from 'node:os';
 import { join } from 'node:path';
 import test from 'node:test';
+import manifest from '../../../package.json' with { type: 'json' };
 
 import { DiscordHarnessBridge } from '../../../src/channels/discord/discord-bridge.mjs';
 import { connectionTestTarget } from '../../../src/channels/shared/connection-test.mjs';
@@ -794,7 +795,7 @@ test('all four shared text channels list models and presets locally and advertis
     const help = sent.at(-1);
     for (const command of [
       '/models', '/model', '/reasoninglist', '/reasonings', '/reasoning',
-      '/presetlist', '/preset', '/preset --default', '/stop', '/steer',
+      '/presetlist', '/preset', '/preset --default', '/stop', '/steer', '/version',
     ]) {
       assert.match(help, new RegExp(`\\${command}`), `${name} ${command}`);
     }
@@ -805,6 +806,21 @@ test('all four shared text channels list models and presets locally and advertis
   }
 });
 
+test('/version uses the shared command fast lane without accessing Harness', async () => {
+  const fixture = stateFixture();
+  const sent = [];
+  const bridge = createBridge({
+    state: fixture.state,
+    bot: { sendText: async (_target, text) => sent.push(text) },
+    harness: {},
+  });
+
+  await bridge.accept(message('plugin-version', '/version'));
+
+  assert.deepEqual(sent, [`dsh-im v${manifest.version}`]);
+  assert.equal(fixture.sessions.size, 0);
+});
+
 test('/stop uses the shared command fast lane without waiting for the running prompt', async () => {
   const fixture = stateFixture({ 'direct:chat-a': 'session-running' });
   const askStarted = deferred();

test/channels/telegram/telegram.test.mjs

@@ -251,6 +251,7 @@ test('Telegram API registers the command menu and commands-type menu button', as
 
 test('Telegram command menu follows the host language at runtime', () => {
   assert.equal(TELEGRAM_COMMAND_MENU[0].description, '开启一个全新会话');
+  assert.equal(TELEGRAM_COMMAND_MENU.some(({ command }) => command === 'version'), true);
   setImHostLanguage('en');
   try {
     assert.equal(telegramCommandMenu()[0].description, 'Start a brand-new Session');

test/channels/wecom/bridge.test.mjs

@@ -462,6 +462,7 @@ test('Enterprise WeChat lists models and presets without prompting and advertise
   for (const command of [
     '/models', '/model', '/reasoninglist', '/reasonings', '/reasoning',
     '/presetlist', '/preset', '/preset --default', '/stop', '/steer',
+    '/version',
     '/batch', '/send', '/cancel',
   ]) {
     assert.equal(help.includes(command), true, command);

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

@@ -778,6 +778,7 @@ test('Weixin lists models and presets without prompting and advertises fast comm
   for (const command of [
     '/models', '/model', '/reasoninglist', '/reasonings', '/reasoning',
     '/presetlist', '/preset', '/preset --default', '/stop', '/steer',
+    '/version',
     '/batch', '/send', '/cancel',
   ]) {
     assert.equal(help.includes(command), true, command);

test/control-command.test.mjs

@@ -36,14 +36,31 @@ function fixture({ sessionId = 'session-one', stopped = true, steered = true } =
 test('isControlCommand reserves valid and malformed control command forms', () => {
   for (const value of [
     '/stop', ' /STOP ', '/stop now', '/steer', '/StEeR do this', '/steer line one\nline two',
+    '/version', ' /VERSION ', '/version now',
   ]) {
     assert.equal(isControlCommand(value), true, value);
   }
-  for (const value of [null, '', 'stop', '/stopping', '/steering', 'hello /stop']) {
+  for (const value of [null, '', 'stop', '/stopping', '/steering', '/versions', 'hello /stop']) {
     assert.equal(isControlCommand(value), false, String(value));
   }
 });
 
+test('/version returns the package version without touching Harness or Session state', async () => {
+  const { calls, harness, state } = fixture();
+  const { version } = await import('../package.json', { with: { type: 'json' } })
+    .then((module) => module.default);
+
+  assert.deepEqual(
+    await runControlCommand('/VERSION', harness, state, 'direct:one'),
+    { message: `dsh-im v${version}` },
+  );
+  assert.match(
+    (await runControlCommand('/version details', harness, state, 'direct:one')).message,
+    /用法/,
+  );
+  assert.equal(calls.length, 0);
+});
+
 test('/stop is exact, text-only, and never creates a Session', async () => {
   const { calls, harness, state } = fixture();
   assert.match((await runControlCommand('/stop later', harness, state, 'direct:one')).message, /用法/);