ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

epub_external_links.lua

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+-- Keep links to companion experiment directories usable outside the checkout.
+-- In the Markdown sources, ../chapterN/... is correct relative to book-*/.
+-- Those directories are not bundled into EPUB files, so make the links point
+-- at the corresponding directory on GitHub before Pandoc packages the book.
+
+function Link(link)
+  -- Links between chapter source files are valid in the repository, but the
+  -- Markdown filenames are not packaged into an EPUB.  Point these links at
+  -- the corresponding source file on GitHub so EPUBCheck does not reject a
+  -- dangling resource (and readers can still follow the reference).
+  local chapter_file, chapter_suffix = link.target:match("^(chapter%d+%.md)(.*)$")
+  if chapter_file and (chapter_suffix == "" or chapter_suffix:match("^[#?]")) then
+    link.target = "https://github.com/bojieli/ai-agent-book/blob/main/book/" .. chapter_file .. chapter_suffix
+    return link
+  end
+
+  local chapter, remainder = link.target:match("^%.%./(chapter%d+)(.*)$")
+  if chapter and (remainder == "" or remainder:match("^[/#?]")) then
+    local project_path = chapter .. remainder
+    local path, suffix = project_path:match("^([^?#]*)(.*)$")
+    local clean_path = path:gsub("/+$", "")
+    local is_file = clean_path:match("%.%w+$") ~= nil
+    local type_path = is_file and "blob" or "tree"
+    link.target = "https://github.com/bojieli/ai-agent-book/" .. type_path .. "/main/" .. clean_path .. suffix
+    return link
+  end
+end