# markitect-filter `markitect-filter` provides concrete source-format adapters for converting external document formats into canonical Markitect Markdown representations. The first adapter is `source.epub3`, a read-only EPUB3 adapter that implements the `markitect-tool` source adapter contract. ## Development Run tests from this checkout: ```bash PYTHONPATH=src:/home/worsch/markitect-tool/src python3 -m pytest ``` The EPUB3 adapter is registered through: ```toml [project.entry-points."markitect_tool.source_adapters"] epub3 = "markitect_filter.adapters:epub3_adapter_descriptor" ```