Replace Markdown inside HTML

[junaga]

What changed

Replace every Markdown image, link, and code span nested inside paired HTML elements with equivalent HTML. This covers the invader, mineral, commodity, event-log, reaction, and parameter tables plus the PTR callout and inline HTML wrappers.

Hexo {% resource %} tags and ordinary Markdown outside HTML are deliberately unchanged.

Why

Markdown parsing inside raw HTML blocks is renderer-specific. The current custom renderer expands it, but CommonMark-compatible consumers treat it as literal text. Making each HTML block self-contained preserves the layout while making the source portable.

Validation

• Generated both docs and API output with the repository's Node 10 build environment
• Compared every affected generated page to the pre-change output; content is unchanged apart from generated timestamps and source whitespace
• Scanned all docs and API Markdown files; no Markdown images, links, or code spans remain inside paired HTML elements
• git diff --check