Method generate

src/node/services/gitPatchArtifactService.ts:479–839

(
    parentWorkspaceId: string,
    childWorkspaceId: string,
    onComplete: OnPatchGenerationComplete
  )

  }

  private async generate(
    parentWorkspaceId: string,
    childWorkspaceId: string,
    onComplete: OnPatchGenerationComplete
  ): Promise<void> {
    assert(parentWorkspaceId.length > 0, "generate: parentWorkspaceId must be non-empty");
    assert(childWorkspaceId.length > 0, "generate: childWorkspaceId must be non-empty");

    const parentSessionDir = this.config.getSessionDir(parentWorkspaceId);

    const updateArtifact = async (
      updater: Parameters<typeof upsertSubagentGitPatchArtifact>[0]["updater"]
    ): Promise<SubagentGitPatchArtifact> => {
      return await upsertSubagentGitPatchArtifact({
        workspaceId: parentWorkspaceId,
        workspaceSessionDir: parentSessionDir,
        childTaskId: childWorkspaceId,
        updater,
      });
    };

    const nowMs = Date.now();

    try {
      const cfg = this.config.loadConfigOrDefault();
      const entry = findWorkspaceEntry(cfg, childWorkspaceId);

      if (!entry) {
        await updateArtifact((existing) =>
          failPendingProjectArtifacts({
            artifact:
              existing ??
              buildPendingPatchArtifact({
                childTaskId: childWorkspaceId,
                parentWorkspaceId,
                createdAtMs: nowMs,
                updatedAtMs: nowMs,
                projectArtifacts: [],
              }),
            error: "Task workspace not found in config.",
            updatedAtMs: nowMs,
          })
        );
        return;
      }

      const ws = entry.workspace;

      const workspacePath = coerceNonEmptyString(ws.path);
      if (!workspacePath) {
        await updateArtifact((existing) =>
          failPendingProjectArtifacts({
            artifact:
              existing ??
              buildPendingPatchArtifact({
                childTaskId: childWorkspaceId,
                parentWorkspaceId,
                createdAtMs: nowMs,