close AI-213
#### PR Dependency Tree
* **PR #12846** 👈
* **PR #12811**
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
- **New Features**
- Introduced support for AI-editable blocks in document parsing,
allowing blocks to include metadata for AI-based editing.
- Added rendering for todo list items with markdown checkbox syntax.
- Unsupported block types are now marked with placeholders in the parsed
output.
- **Tests**
- Added new test cases and snapshots to verify parsing behavior with
AI-editable content enabled.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
fix AI-191
#### PR Dependency Tree
* **PR #12840** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- Introduced the ability to convert rich text documents into Markdown,
supporting a wide range of content types such as headings, lists,
tables, images, code blocks, attachments, and embedded documents.
- Added support for parsing collaborative document structures and
rendering them as structured Markdown or parsed representations.
- Enhanced handling of database and table blocks, including conversion
to Markdown tables with headers and cell content.
- **Documentation**
- Added a README noting the use of a forked Markdown converter.
- **Tests**
- Added new test coverage for document parsing features.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
#### PR Dependency Tree
* **PR #12840** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
fengmk2