Extend the release workflow to build separate EPUB artifacts for en, vi,
and zh in parallel via a matrix job, then publish all built files under
a single GitHub Release. Using fail-fast: false so a failure in one
language does not block releasing the others.
Also refactor build_epub.py to drive language-specific paths, filenames,
and titles from a mapping, and add zh support (title/subtitle + choice).
* refactor(epub): replace Kroki HTTP dependency with local mmdc rendering (#10)
Remove httpx/tenacity dependencies and Kroki.io API calls from the EPUB
build pipeline. MermaidRenderer now invokes mmdc (mermaid-cli) as a local
subprocess, eliminating intermittent CI failures caused by network
unavailability. CI workflow installs @mermaid-js/mermaid-cli before build.
* fix(epub): add subprocess timeout and fix deduplication log count
- Add 60s timeout to mmdc subprocess.run to prevent hanging builds
when Chromium/Puppeteer stalls in headless CI environments
- Fix misleading log that printed unique/total as equal counts;
now logs "N unique diagrams (M total blocks)" explicitly
- Add test_render_all_timeout and strengthen deduplication assertion
- Introduced a new script to build an EPUB from markdown files, enhancing documentation accessibility.
- Added a GitHub Actions workflow for automated EPUB builds on version tag pushes.
- Created the initial EPUB file 'claude-howto-guide.epub' for distribution.
This update streamlines the process of creating and releasing the Claude How-To guide in EPUB format.
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