Function nestBlockUnderParent

cli/src/utils/message-block-helpers.ts:365–387

(
  blocks: ContentBlock[],
  parentAgentId: string,
  blockToNest: ContentBlock,
)

 * Nests a block under a parent agent, or returns it at top level if parent not found.
 */
export const nestBlockUnderParent = (
  blocks: ContentBlock[],
  parentAgentId: string,
  blockToNest: ContentBlock,
): NestBlockResult => {
  let parentFound = false
  const updatedBlocks = updateBlocksRecursively(
    blocks,
    parentAgentId,
    (parentBlock) => {
      if (parentBlock.type !== 'agent') {
        return parentBlock
      }
      parentFound = true
      return {
        ...parentBlock,
        blocks: [...(parentBlock.blocks || []), blockToNest],
      }
    },
  )

  return { blocks: updatedBlocks, parentFound }
}

/**
 * Checks if a block with the given targetId exists anywhere in the children of the blocks.