* Fix auto-generated everforest obsidian theme
* Update `--text-muted` and `--text-faint` to be readable against
background color
* Add contrast detection and color correction logic
* Remove dedicated Obsidian CSS file
* Add dedicated text color variables to obsidian theme generation
* Replace closest color logic with generated color for code bg in Obsidian
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Co-authored-by: David Heinemeier Hansson <david@hey.com>
