DeepTip for Valheim (BepInEx, Thunderstore "DeepTip"): Paradox-style nested tooltips. Tooltips open beside the item, highlighted terms open further explanations, a click pins. Glossary EN/DE, lexicon in the Compendium, API for every mod.
DeepTip: explanation windows with depth. A UI design pattern for nested, pinnable tooltips like in Paradox games, content as JSON glossaries per language. Spec, schema, validator, test cases, code in HTML/CSS/JS and Rust, exact guides for every other framework.
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