feat: support compact command across IM channels

src/channels/dingtalk/dingtalk-bridge.mjs

@@ -9,6 +9,7 @@ import {
   validHarnessQuestion,
 } from '../shared/harness-question.mjs';
 import { HarnessApprovalQueue } from '../shared/harness-approval.mjs';
+import { runCompactCommand } from '../shared/compact-command.mjs';
 import { runWorkspaceCommand } from '../shared/workspace-command.mjs';
 import { askInWorkspaceSession } from '../shared/workspace-session.mjs';
 
@@ -21,6 +22,7 @@ const HELP_TEXT = [
   '',
   '直接发送文字即可继续当前会话。',
   '/new  开启一个全新会话',
+  '/compact  压缩当前会话的较早上下文',
   '/workspace 工作区绝对路径  切换工作区',
   '/workspacelist  列出工作区绝对路径',
   '/sessionlist [工作区序号或绝对路径]  列出会话 ID 和标题',
@@ -346,6 +348,17 @@ export class DingtalkHarnessBridge {
         }
         return;
       }
+      const compactCommand = await runCompactCommand(
+        text,
+        this.#harness,
+        this.#state,
+        key,
+        { signal: this.#signal },
+      );
+      if (compactCommand) {
+        await this.#send(sessionWebhook, compactCommand.message);
+        return;
+      }
 
       if (typeof this.#api.createAiCard === 'function'
         && typeof this.#api.updateAiCard === 'function'

src/channels/feishu/bridge.mjs

@@ -11,6 +11,7 @@ import {
   validHarnessQuestion,
 } from '../shared/harness-question.mjs';
 import { HarnessApprovalQueue } from '../shared/harness-approval.mjs';
+import { runCompactCommand } from '../shared/compact-command.mjs';
 import { runWorkspaceCommand } from '../shared/workspace-command.mjs';
 import { askInWorkspaceSession } from '../shared/workspace-session.mjs';
 
@@ -22,6 +23,7 @@ const HELP_TEXT = [
   '',
   '直接发送问题即可继续当前会话。',
   '/new  开启一个全新会话',
+  '/compact  压缩当前会话的较早上下文',
   '/workspace 工作区绝对路径  切换工作区',
   '/workspacelist  列出工作区绝对路径',
   '/sessionlist [工作区序号或绝对路径]  列出会话 ID 和标题',
@@ -322,6 +324,17 @@ export class FeishuHarnessBridge {
       }
       return;
     }
+    const compactCommand = await runCompactCommand(
+      text,
+      this.#harness,
+      this.#state,
+      key,
+      { signal: this.#signal },
+    );
+    if (compactCommand) {
+      await this.#send(event.message.chat_id, compactCommand.message);
+      return;
+    }
 
     this.#logger.info?.(`[dsh-feishu] processing ${event.message.chat_type} message ${messageId}`);
     try {

src/channels/qq/qq-bridge.mjs

@@ -1,4 +1,5 @@
 import { runWorkspaceCommand } from '../shared/workspace-command.mjs';
+import { runCompactCommand } from '../shared/compact-command.mjs';
 import {
   harnessAnswerForQuestion,
   harnessQuestionText,
@@ -14,6 +15,7 @@ const HELP_TEXT = [
   '',
   '直接发送文字即可继续当前会话。',
   '/new  开启一个全新会话',
+  '/compact  压缩当前会话的较早上下文',
   '/workspace 工作区绝对路径  切换工作区',
   '/workspacelist  列出工作区绝对路径',
   '/sessionlist [工作区序号或绝对路径]  列出会话 ID 和标题',
@@ -241,6 +243,18 @@ export class QqHarnessBridge {
         await this.#state.markSeen(messageId);
         return;
       }
+      const compactCommand = await runCompactCommand(
+        text,
+        this.#harness,
+        this.#state,
+        key,
+        { signal: this.#signal },
+      );
+      if (compactCommand) {
+        await this.#bot.sendText(target, compactCommand.message);
+        await this.#state.markSeen(messageId);
+        return;
+      }
 
       let stream = null;
       let streamFinished = false;

src/channels/shared/bot-workspace-store.mjs

@@ -668,6 +668,19 @@ export function createBotWorkspaceScope(harness, { botId, workspaces, state }) {
           return target.ask(sessionId, ...args);
         };
       }
+      if (property === 'executeCommand' && typeof target.executeCommand === 'function') {
+        return (sessionId, ...args) => {
+          const generation = sessionGenerations.get(sessionId);
+          sessionGenerations.delete(sessionId);
+          if (!isCurrentScope()
+            || (generation !== undefined && generation !== workspaces.generationFor(botId))) {
+            const error = new Error('The bot workspace changed before this command started.');
+            error.code = WORKSPACE_SESSION_STALE;
+            throw error;
+          }
+          return target.executeCommand(sessionId, ...args);
+        };
+      }
       const value = Reflect.get(target, property, target);
       return typeof value === 'function' ? value.bind(target) : value;
     },

src/channels/shared/compact-command.mjs

@@ -0,0 +1,95 @@
+import { WORKSPACE_SESSION_STALE } from './workspace-session.mjs';
+
+const COMPACT_COMMAND = /^\/compact(?=$|\s)([\s\S]*)$/i;
+const COMPACT_USAGE = '用法：/compact（不带参数）';
+
+const COMPACT_RESULT_TEXT = new Map([
+  ['No compactable history yet.', '暂无可压缩的历史记录。'],
+  [
+    'Compaction is unavailable because this process has an active compaction, or the agent is not idle.',
+    '当前会话正在生成回复或执行压缩，请稍后重试。',
+  ],
+  ['Compaction cancelled.', '上下文压缩已取消。'],
+  [
+    'The history selected for compaction changed before it could be replaced. The conversation is unchanged; the attempt is recorded in the session log.',
+    '压缩期间会话历史发生变化，本次未修改会话，请重试。',
+  ],
+  [
+    'Compaction could not produce a useful summary. The conversation is unchanged; the attempt is recorded in the session log.',
+    '未能生成有效的压缩摘要，本次未修改会话。',
+  ],
+  [
+    'Compaction did not finish cleanly; some session history may have changed. Inspect the current session state before retrying.',
+    '上下文压缩未正常完成，部分会话历史可能已变化，请检查会话后再重试。',
+  ],
+  [
+    'Compaction finished, but the session could not be saved.',
+    '上下文已压缩，但会话保存失败。',
+  ],
+]);
+
+function commandResult(message) {
+  return { handled: true, message, messages: [message] };
+}
+
+function compactResultText(result) {
+  if (!result || typeof result !== 'object'
+    || !['success', 'error'].includes(result.kind)
+    || (result.text !== undefined && typeof result.text !== 'string')) {
+    throw new TypeError('Harness returned an invalid /compact result');
+  }
+  const text = result.text?.trim() ?? '';
+  const compacted = /^Compacted (\d+) history items \(~(\d+) tokens\)\.$/u.exec(text);
+  if (compacted) {
+    return `已压缩 ${compacted[1]} 条历史记录（约 ${compacted[2]} 个 token）。`;
+  }
+  if (COMPACT_RESULT_TEXT.has(text)) return COMPACT_RESULT_TEXT.get(text);
+  if (text) return text;
+  return result.kind === 'success' ? '上下文压缩完成。' : '上下文压缩失败。';
+}
+
+function compactErrorMessage(error) {
+  const code = error?.code ?? error?.failure?.code;
+  if (code === 'session-not-found') {
+    return '当前聊天绑定的会话已不存在，请发送新消息开启会话。';
+  }
+  if (code === 'agent-busy') return '当前会话正在生成回复，请稍后重试。';
+  if (code === 'cancelled' || error?.name === 'AbortError') return '上下文压缩已取消。';
+  if (code === WORKSPACE_SESSION_STALE || code === 'workspace-bot-not-found') {
+    return '工作区或机器人状态已发生变化，请重试。';
+  }
+  if (code === 'commands-unavailable') {
+    return '当前 Harness 暂不支持从机器人执行上下文压缩。';
+  }
+  return '上下文压缩失败，请稍后重试。';
+}
+
+/**
+ * Execute the explicit Harness compaction command for an existing IM conversation Session.
+ * Unknown input returns null so the caller may continue ordinary message routing.
+ */
+export async function runCompactCommand(text, harness, state, conversationKey, options = {}) {
+  if (typeof text !== 'string') return null;
+  const match = COMPACT_COMMAND.exec(text.trim());
+  if (!match) return null;
+  if (match[1].trim()) return commandResult(COMPACT_USAGE);
+  if (typeof state?.sessionFor !== 'function') {
+    return commandResult('当前机器人没有可用的会话状态。');
+  }
+  const sessionId = state.sessionFor(conversationKey);
+  if (typeof sessionId !== 'string' || !sessionId) {
+    return commandResult('当前聊天还没有可压缩的会话，请先发送一条消息。');
+  }
+  if (typeof harness?.executeCommand !== 'function') {
+    return commandResult('当前机器人暂不支持上下文压缩。');
+  }
+  try {
+    const execution = await harness.executeCommand(sessionId, '/compact', options);
+    if (execution === undefined) {
+      return commandResult('当前 Harness 未注册 /compact 命令，请确认上下文压缩组件已启用。');
+    }
+    return commandResult(compactResultText(execution?.result));
+  } catch (error) {
+    return commandResult(compactErrorMessage(error));
+  }
+}

src/channels/shared/harness-client.mjs

@@ -318,6 +318,7 @@ export class HarnessClient {
   #interactionReconnectDelayMs;
   #rpcIdPrefix;
   #logPrefix;
+  #commandExecutor;
   #managedProcess = null;
   #interactionRegistry;
   #interactionOwnerships;
@@ -334,6 +335,7 @@ export class HarnessClient {
     interactionReconnectDelayMs = 500,
     rpcIdPrefix = 'im',
     logPrefix = 'dsh-im',
+    commandExecutor,
   }) {
     if (typeof createWebSocket !== 'function') {
       throw new TypeError('createWebSocket must be a function');
@@ -347,6 +349,9 @@ export class HarnessClient {
     if (typeof logPrefix !== 'string' || !logPrefix.trim()) {
       throw new TypeError('logPrefix must be a non-empty string');
     }
+    if (commandExecutor !== undefined && typeof commandExecutor !== 'function') {
+      throw new TypeError('commandExecutor must be a function');
+    }
     this.#baseUrl = new URL(baseUrl);
     this.#workspace = workspace;
     this.#agentPreset = agentPreset;
@@ -357,6 +362,7 @@ export class HarnessClient {
     this.#interactionReconnectDelayMs = interactionReconnectDelayMs;
     this.#rpcIdPrefix = rpcIdPrefix.trim();
     this.#logPrefix = logPrefix.trim();
+    this.#commandExecutor = commandExecutor;
     this.#interactionRegistry = interactionRegistry(this.#baseUrl.origin);
     this.#interactionOwnerships = this.#interactionRegistry.ownerships;
     this.#interactionClaims = this.#interactionRegistry.claims;
@@ -459,6 +465,24 @@ export class HarnessClient {
     return created.sessionId;
   }
 
+  async executeCommand(sessionId, line, options = {}) {
+    if (typeof sessionId !== 'string' || !sessionId) throw new TypeError('sessionId is required');
+    if (typeof line !== 'string' || !line) throw new TypeError('command line is required');
+    if (!this.#commandExecutor) {
+      const error = new Error('Harness command execution is unavailable');
+      error.code = 'commands-unavailable';
+      throw error;
+    }
+    try {
+      return await this.#commandExecutor(sessionId, line, options);
+    } catch (error) {
+      if (error?.failure && typeof error.failure === 'object') {
+        throw new HarnessRpcError('commands.execute', error.failure);
+      }
+      throw error;
+    }
+  }
+
   async sessionExists(sessionId, options = {}) {
     try {
       await this.rpc('session.history', { sessionId, maxMessages: 1 }, 30_000, options);

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

@@ -1,4 +1,5 @@
 import { runWorkspaceCommand } from './workspace-command.mjs';
+import { runCompactCommand } from './compact-command.mjs';
 import { askInWorkspaceSession } from './workspace-session.mjs';
 import { HarnessApprovalQueue } from './harness-approval.mjs';
 import {
@@ -218,6 +219,7 @@ export class TextHarnessBridge {
           '',
           '直接发送文字即可继续当前会话。',
           '/new  开启一个全新会话',
+          '/compact  压缩当前会话的较早上下文',
           '/workspace 工作区绝对路径  切换工作区',
           '/workspacelist  列出工作区绝对路径',
           '/sessionlist [工作区序号或绝对路径]  列出会话 ID 和标题',
@@ -244,6 +246,17 @@ export class TextHarnessBridge {
         await this.#bot.sendText(target, '已开启新会话。请发送你的问题。');
         return;
       }
+      const compactCommand = await runCompactCommand(
+        text,
+        this.#harness,
+        this.#state,
+        conversationKey,
+        { signal: this.#signal },
+      );
+      if (compactCommand) {
+        await this.#bot.sendText(target, compactCommand.message);
+        return;
+      }
 
       await this.#bot.sendTyping?.(target).catch((error) => {
         this.#logger.warn?.(`[dsh-im:${this.#descriptor.key}] typing indicator failed:`, error);

src/channels/wecom/wecom-bridge.mjs

@@ -5,6 +5,7 @@ import {
   validHarnessQuestion,
 } from '../shared/harness-question.mjs';
 import { HarnessApprovalQueue } from '../shared/harness-approval.mjs';
+import { runCompactCommand } from '../shared/compact-command.mjs';
 import { runWorkspaceCommand } from '../shared/workspace-command.mjs';
 import { askInWorkspaceSession } from '../shared/workspace-session.mjs';
 
@@ -13,6 +14,7 @@ const HELP_TEXT = [
   '',
   '直接发送文字即可继续当前会话。',
   '/new  开启一个全新会话',
+  '/compact  压缩当前会话的较早上下文',
   '/workspace 工作区绝对路径  切换工作区',
   '/workspacelist  列出工作区绝对路径',
   '/sessionlist [工作区序号或绝对路径]  列出会话 ID 和标题',
@@ -321,6 +323,18 @@ export class WecomHarnessBridge {
         await this.#state.markSeen(messageId);
         return;
       }
+      const compactCommand = await runCompactCommand(
+        text,
+        this.#harness,
+        this.#state,
+        key,
+        { signal: this.#signal },
+      );
+      if (compactCommand) {
+        await this.#sendImmediate(frame, chatId, compactCommand.message);
+        await this.#state.markSeen(messageId);
+        return;
+      }
 
       streamId = this.#generateReqId('stream');
       try {

src/channels/weixin/weixin-bridge.mjs

@@ -9,6 +9,7 @@ import {
   validHarnessQuestion,
 } from '../shared/harness-question.mjs';
 import { HarnessApprovalQueue } from '../shared/harness-approval.mjs';
+import { runCompactCommand } from '../shared/compact-command.mjs';
 import { runWorkspaceCommand } from '../shared/workspace-command.mjs';
 import { askInWorkspaceSession } from '../shared/workspace-session.mjs';
 
@@ -19,6 +20,7 @@ const HELP_TEXT = [
   '',
   '直接发送文字或带文字识别结果的语音即可继续当前会话。',
   '/new  开启一个全新会话',
+  '/compact  压缩当前会话的较早上下文',
   '/workspace 工作区绝对路径  切换工作区',
   '/workspacelist  列出工作区绝对路径',
   '/sessionlist [工作区序号或绝对路径]  列出会话 ID 和标题',
@@ -248,6 +250,18 @@ export class WeixinHarnessBridge {
         await this.#state.markSeen(messageId);
         return;
       }
+      const compactCommand = await runCompactCommand(
+        text,
+        this.#harness,
+        this.#state,
+        key,
+        { signal: this.#signal },
+      );
+      if (compactCommand) {
+        await this.#send(sender, compactCommand.message, contextToken, runId);
+        await this.#state.markSeen(messageId);
+        return;
+      }
 
       let answer;
       try {