feat: include full message records to link subagent trajectories

packages/cli/src/ui/commands/bugCommand.test.ts

@@ -162,6 +162,7 @@ describe('bugCommand', () => {
       { role: 'model', parts: [{ text: 'hi' }] },
     ];
     const mockGetSubagentTrajectories = vi.fn().mockResolvedValue({});
+    const mockGetConversation = vi.fn().mockReturnValue({ messages: [] });
     const mockContext = createMockCommandContext({
       services: {
         agentContext: {
@@ -179,6 +180,7 @@ describe('bugCommand', () => {
             getChat: () => ({
               getHistory: () => history,
               getSubagentTrajectories: mockGetSubagentTrajectories,
+              getConversation: mockGetConversation,
             }),
           },
         },
@@ -194,6 +196,7 @@ describe('bugCommand', () => {
     );
     expect(exportHistoryToFile).toHaveBeenCalledWith({
       history,
+      messages: [],
       filePath: expectedPath,
       trajectories: {},
     });
@@ -222,6 +225,7 @@ describe('bugCommand', () => {
       } as unknown as ConversationRecord,
     };
     const mockGetSubagentTrajectories = vi.fn().mockResolvedValue(trajectories);
+    const mockGetConversation = vi.fn().mockReturnValue({ messages: [] });
 
     const mockContext = createMockCommandContext({
       services: {
@@ -240,6 +244,7 @@ describe('bugCommand', () => {
             getChat: () => ({
               getHistory: () => history,
               getSubagentTrajectories: mockGetSubagentTrajectories,
+              getConversation: mockGetConversation,
             }),
           },
         },
@@ -256,6 +261,7 @@ describe('bugCommand', () => {
     expect(mockGetSubagentTrajectories).toHaveBeenCalled();
     expect(exportHistoryToFile).toHaveBeenCalledWith({
       history,
+      messages: [],
       filePath: expectedPath,
       trajectories,
     });

packages/cli/src/ui/commands/bugCommand.ts

@@ -89,8 +89,10 @@ export const bugCommand: SlashCommand = {
         const historyFilePath = path.join(tempDir, historyFileName);
         try {
           const trajectories = await chat?.getSubagentTrajectories();
+          const messages = chat?.getConversation()?.messages;
           await exportHistoryToFile({
             history,
+            messages,
             filePath: historyFilePath,
             trajectories,
           });

packages/cli/src/ui/commands/chatCommand.test.ts

@@ -64,6 +64,7 @@ describe('chatCommand', () => {
     mockGetChat = vi.fn().mockReturnValue({
       getHistory: mockGetHistory,
       getSubagentTrajectories: vi.fn().mockResolvedValue({}),
+      getConversation: vi.fn().mockReturnValue({ messages: [] }),
     });
     mockSaveCheckpoint = vi.fn().mockResolvedValue(undefined);
     mockLoadCheckpoint = vi.fn().mockResolvedValue({ history: [] });
@@ -231,7 +232,12 @@ describe('chatCommand', () => {
 
       expect(mockCheckpointExists).not.toHaveBeenCalled(); // Should skip existence check
       expect(mockSaveCheckpoint).toHaveBeenCalledWith(
-        { history, authType: AuthType.LOGIN_WITH_GOOGLE, trajectories: {} },
+        {
+          history,
+          authType: AuthType.LOGIN_WITH_GOOGLE,
+          trajectories: {},
+          messages: [],
+        },
         tag,
       );
       expect(result).toEqual({
@@ -465,6 +471,7 @@ describe('chatCommand', () => {
       );
       expect(mockExport).toHaveBeenCalledWith({
         history: mockHistory,
+        messages: [],
         filePath: expectedPath,
         trajectories: {},
       });
@@ -481,6 +488,7 @@ describe('chatCommand', () => {
       const expectedPath = path.join(process.cwd(), 'my-chat.json');
       expect(mockExport).toHaveBeenCalledWith({
         history: mockHistory,
+        messages: [],
         filePath: expectedPath,
         trajectories: {},
       });
@@ -497,6 +505,7 @@ describe('chatCommand', () => {
       const expectedPath = path.join(process.cwd(), 'my-chat.md');
       expect(mockExport).toHaveBeenCalledWith({
         history: mockHistory,
+        messages: [],
         filePath: expectedPath,
         trajectories: {},
       });
@@ -548,6 +557,7 @@ describe('chatCommand', () => {
       const expectedPath = path.join(process.cwd(), 'my-chat.json');
       expect(mockExport).toHaveBeenCalledWith({
         history: mockHistory,
+        messages: [],
         filePath: expectedPath,
         trajectories: {},
       });
@@ -559,6 +569,7 @@ describe('chatCommand', () => {
       const expectedPath = path.join(process.cwd(), 'my-chat.md');
       expect(mockExport).toHaveBeenCalledWith({
         history: mockHistory,
+        messages: [],
         filePath: expectedPath,
         trajectories: {},
       });

packages/cli/src/ui/commands/chatCommand.ts

@@ -140,7 +140,11 @@ const saveCommand: SlashCommand = {
     if (history.length > INITIAL_HISTORY_LENGTH) {
       const authType = config?.getContentGeneratorConfig()?.authType;
       const trajectories = await chat.getSubagentTrajectories();
-      await logger.saveCheckpoint({ history, authType, trajectories }, tag);
+      const messages = chat.getConversation()?.messages;
+      await logger.saveCheckpoint(
+        { history, authType, trajectories, messages },
+        tag,
+      );
       return {
         type: 'message',
         messageType: 'info',
@@ -326,7 +330,8 @@ const shareCommand: SlashCommand = {
 
     try {
       const trajectories = await chat.getSubagentTrajectories();
-      await exportHistoryToFile({ history, filePath, trajectories });
+      const messages = chat.getConversation()?.messages;
+      await exportHistoryToFile({ history, filePath, trajectories, messages });
       return {
         type: 'message',
         messageType: 'info',

packages/cli/src/ui/utils/historyExportUtils.ts

@@ -7,7 +7,10 @@
 import * as fsPromises from 'node:fs/promises';
 import path from 'node:path';
 import type { Content } from '@google/genai';
-import type { ConversationRecord } from '@google/gemini-cli-core';
+import type {
+  ConversationRecord,
+  MessageRecord,
+} from '@google/gemini-cli-core';
 
 /**
  * Serializes chat history to a Markdown string.
@@ -52,9 +55,17 @@ export function serializeHistoryToMarkdown(
  * Options for exporting chat history.
  */
 export interface ExportHistoryOptions {
+  /** The standard history array used for model requests. */
   history: readonly Content[];
+  /** The file path to export to. */
   filePath: string;
+  /** Optional subagent trajectories to include. */
   trajectories?: Record<string, ConversationRecord>;
+  /**
+   * Optional full message records which contain metadata like agentId for tool calls,
+   * providing the link between history and trajectories.
+   */
+  messages?: MessageRecord[];
 }
 
 /**
@@ -63,13 +74,13 @@ export interface ExportHistoryOptions {
 export async function exportHistoryToFile(
   options: ExportHistoryOptions,
 ): Promise<void> {
-  const { history, filePath, trajectories } = options;
+  const { history, filePath, trajectories, messages } = options;
   const extension = path.extname(filePath).toLowerCase();
 
   let content: string;
   if (extension === '.json') {
     if (trajectories && Object.keys(trajectories).length > 0) {
-      content = JSON.stringify({ history, trajectories }, null, 2);
+      content = JSON.stringify({ history, messages, trajectories }, null, 2);
     } else {
       content = JSON.stringify(history, null, 2);
     }

packages/core/src/core/geminiChat.ts

@@ -1238,8 +1238,16 @@ export class GeminiChat {
     return this.chatRecordingService.getSubagentTrajectories();
   }
 
+  /**
+   * Gets the current conversation record.
+   */
+  getConversation(): ConversationRecord | null {
+    return this.chatRecordingService.getConversation();
+  }
+
   /**
    * Records completed tool calls with full metadata.
+
    * This is called by external components when tool calls complete, before sending responses to Gemini.
    */
   recordCompletedToolCalls(

packages/core/src/core/logger.ts

@@ -11,7 +11,10 @@ import type { AuthType } from './contentGenerator.js';
 import type { Storage } from '../config/storage.js';
 import { debugLogger } from '../utils/debugLogger.js';
 import { coreEvents } from '../utils/events.js';
-import type { ConversationRecord } from '../services/chatRecordingService.js';
+import {
+  type ConversationRecord,
+  type MessageRecord,
+} from '../services/chatRecordingService.js';
 
 const LOG_FILE_NAME = 'logs.json';
 
@@ -31,6 +34,7 @@ export interface Checkpoint {
   history: readonly Content[];
   authType?: AuthType;
   trajectories?: Record<string, ConversationRecord>;
+  messages?: MessageRecord[];
 }
 
 // This regex matches any character that is NOT a letter (a-z, A-Z),