markitect-filter provides concrete source-format adapters for converting external document formats into canonical Markitect Markdown representations.

The first adapters are read-only source adapters that implement the markitect-tool source adapter contract:

source.epub3 for EPUB3 packages
source.pdf for digitally-readable PDFs

Development

Run tests from this checkout:

PYTHONPATH=src:/home/worsch/markitect-tool/src python3 -m pytest

The EPUB3 adapter is registered through:

[project.entry-points."markitect_tool.source_adapters"]
epub3 = "markitect_filter.adapters:epub3_adapter_descriptor"
pdf = "markitect_filter.adapters:pdf_adapter_descriptor"

The first PDF slice is stdlib-only and targets deterministic text extraction from local, digitally-readable PDFs. OCR, scanned-document recognition, and layout-perfect reconstruction are intentionally deferred.

Read-side attachment metadata is exposed through NormalizedMarkdownDocument.attachments for EPUB3 package resources, PDF embedded files, and PDF image-resource signals. See docs/source-attachment-metadata.md for the handoff contract to passive render asset manifests.