Method forkWorkspace

src/node/runtime/LocalRuntime.ts:141–165

* Fork for LocalRuntime creates a new workspace entry pointing to the same project directory. * Since LocalRuntime doesn't create separate directories, "forking" just means: * 1. A new workspace ID with the new name * 2. Copied chat history (handled by workspaceService) * 3. Same project

(params: WorkspaceForkParams)

   * This enables conversation branching without git worktree overhead.
   */
  async forkWorkspace(params: WorkspaceForkParams): Promise<WorkspaceForkResult> {
    const { initLogger } = params;

    initLogger.logStep("Creating conversation fork (no worktree isolation)");

    // Verify the project directory exists (same check as createWorkspace)
    try {
      await this.stat(this.projectPath);
    } catch {
      return {
        success: false,
        error: `Project directory does not exist: ${this.projectPath}`,
      };
    }

    initLogger.logStep("Project directory verified");

    // Return success - the workspace service will copy chat history
    // and create a new workspace entry pointing to this project directory
    return {
      success: true,
      workspacePath: this.projectPath,
      // sourceBranch is optional for LocalRuntime since no git operations are involved
    };
  }
}