feat(core): Add support for transcript_path in hooks for git-ai/Gemini extension (#14663)

Co-authored-by: Christian Gunderman <gundermanc@gmail.com>

packages/core/src/hooks/hookEventHandler.test.ts

@@ -45,6 +45,13 @@ describe('HookEventHandler', () => {
     mockConfig = {
       getSessionId: vi.fn().mockReturnValue('test-session'),
       getWorkingDir: vi.fn().mockReturnValue('/test/project'),
+      getGeminiClient: vi.fn().mockReturnValue({
+        getChatRecordingService: vi.fn().mockReturnValue({
+          getConversationFilePath: vi
+            .fn()
+            .mockReturnValue('/test/project/.gemini/tmp/chats/session.json'),
+        }),
+      }),
     } as unknown as Config;
 
     mockLogger = {} as Logger;
@@ -513,7 +520,7 @@ describe('HookEventHandler', () => {
         HookEventName.BeforeTool,
         expect.objectContaining({
           session_id: 'test-session',
-          transcript_path: '',
+          transcript_path: '/test/project/.gemini/tmp/chats/session.json',
           cwd: '/test/project',
           hook_event_name: 'BeforeTool',
           timestamp: expect.any(String),

packages/core/src/hooks/hookEventHandler.ts

@@ -548,9 +548,16 @@ export class HookEventHandler {
    * Create base hook input with common fields
    */
   private createBaseInput(eventName: HookEventName): HookInput {
+    // Get the transcript path from the ChatRecordingService if available
+    const transcriptPath =
+      this.config
+        .getGeminiClient()
+        ?.getChatRecordingService()
+        ?.getConversationFilePath() ?? '';
+
     return {
       session_id: this.config.getSessionId(),
-      transcript_path: '', // TODO: Implement transcript path when supported
+      transcript_path: transcriptPath,
       cwd: this.config.getWorkingDir(),
       hook_event_name: eventName,
       timestamp: new Date().toISOString(),

packages/core/src/services/chatRecordingService.ts

@@ -468,6 +468,14 @@ export class ChatRecordingService {
     }
   }
 
+  /**
+   * Gets the path to the current conversation file.
+   * Returns null if the service hasn't been initialized yet.
+   */
+  getConversationFilePath(): string | null {
+    return this.conversationFile;
+  }
+
   /**
    * Deletes a session file by session ID.
    */