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README.md

@@ -86,6 +86,21 @@ Python 3.11+, standard library only. No third-party dependencies.
 
 ## Explanations
 
+> **⚠ Important: AI-generated content.** Every explanation shipped
+> with these decks is written by an AI agent following the contract
+> in `EXPLANATIONS.md`. AI agents make mistakes — they misread
+> formulas, misquote law text, and confidently cite wrong sources.
+> **Do not treat any explanation as the ultimate source of truth.**
+> If something looks off, or if an explanation contradicts your
+> existing understanding, verify against the primary source listed
+> in the card (or against the catalog itself, the AFuV/AFuG on
+> [gesetze-im-internet.de](https://www.gesetze-im-internet.de/), or
+> the resources under [See also](#see-also)). The official answer is
+> always the one from the BNetzA catalog — the *explanation* is just
+> a study aid, not an authority. Cards with a small **low confidence**
+> badge are explicitly flagged as provisional and should be
+> double-checked before you rely on them.
+
 The back of each card optionally carries a terse English explanation
 of *why* the right answer is right. Explanations are not part of the
 BNetzA catalog — they're authored separately (by humans or AI agents)