* fix: unreadable text in markdown code blocks (light mode)
highlight.js's markdown grammar tokenizes underscores, asterisks, and
backticks as emphasis/strong/code spans. The github-dark theme assigns
these tokens colors (#c9d1d9, #8b949e) that are nearly invisible against
light backgrounds, making large sections of markdown code blocks appear
"washed out."
The existing light-mode overrides in index.css cover keywords, strings,
comments, and numbers — but not .hljs-emphasis, .hljs-strong, or
.hljs-code. This patch forces those three token types to inherit the
base code color, which is already correctly overridden for light mode.
Tokens fixed:
- .hljs-emphasis: underscores in variable names (e.g. data_quality_good)
were parsed as italic emphasis — now inherits color, removes italic
- .hljs-strong: **bold** markers used #c9d1d9 — now inherits color
- .hljs-code: `backtick` inline code markers used #8b949e — now inherits
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* test: add markdown file that reproduces light-mode highlighting bug
Contains a ```markdown code block with underscores in variable names,
**bold** markers, and `backtick` code — all patterns that trigger the
washed-out text rendering this PR fixes.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
dgrissen2