Bug type

• Incorrect behavior (not a crash/regression, but wrong output)

Summary

When converting markdown to Feishu docx blocks via docx.document.convert and inserting the returned blocks into a new document, the block ordering can be incorrect. Headings, paragraphs, and list items appear in the wrong sequence — for example, ordered list items before their section heading, or body text before the title.

Steps to reproduce

1. Convert structured markdown (containing a top-level heading, body paragraph, secondary headings, and ordered/bullet list items) with Feishu docx.document.convert.
2. Insert the returned blocks into a new Feishu docx document using the plugin write/append path.
3. Observe the resulting document structure.

Expected behavior

The document should preserve the intended heading/paragraph/list ordering from the source markdown.

Actual behavior

Blocks appear in an incorrect order — headings may appear after body text, and ordered list items may appear before their section heading.

Environment

• OS: OpenCloudOS 9.4
• Node: v22.22.0
• Channel: Feishu

Root cause

The insertion code does not rebuild the block tree using first_level_block_ids, children, and parent_id from the convert response. Instead it relies on the raw array order, which does not reflect the document's intended structure.