substack2md v2.1.2

Release date: 2026-05-31
Commit: 9d15ae2
Tag: v2.1.2

Changes

Align assistant-guide documentation and metadata with the current GuideCheck Level 3 posture.
Serve the GuideCheck assistant guide from the project GitHub Pages .well-known URL so verifiers can discover the standard location.
Keep repository, root, and Pages guide copies byte-identical and mirror the manifest into the Pages source.
Move the GuideCheck canonical URL to https://substack2md.space/.well-known/assistant-guide.txt.
Use the GuideCheck text manifest format and Assistant Guide: title prefix expected by the hosted verifier.
Align public release surfaces with v2.1.2 after tagging: landing page version/date metadata, current frontmatter examples, batch command example, release compare links, and bare-domain URL conventions.

.venv/bin/python -m pytest: 75 passed, 1 skipped.
.venv/bin/python -m ruff check .: all checks passed.
.venv/bin/python -m substack2md --version: substack2md 2.1.2.
Local assistant-guide checks passed as part of tests/test_assistant_guide.py.
Live Substack smoke test was skipped because SUBSTACK2MD_LIVE was not enabled.
No checker behavior changed in this release-surface cleanup.

GitHub Pages may not honor docs/_headers; hosted GuideCheck can still warn about response headers if https://substack2md.space/ is served directly by GitHub Pages.
GuideCheck conformance verifies guide structure, not publisher identity, dependency safety, or runtime behavior.