Stop calling DNA a Pair enabler

DNA only fires on the round's first hand and only for a single played
card (dump/card.lua:3956) - sacrificing a full hand to enable the
easiest hand in the game is not a synergy. Its trips/quads enabling
stays; that is what the one-copy-per-round loop actually builds toward.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

AUDIT.md

@@ -85,7 +85,7 @@ A tag with two is fragile: drop either joker and the theme dies.
 | `hearts` | 2 | 2 | **2** | yes |
 | `joker_gen` | 1 | 3 | 4 | yes |
 | `money` | 15 | 3 | 17 | yes |
-| `pair` | 4 | 3 | 4 | yes |
+| `pair` | 3 | 3 | 3 | yes |
 | `planet` | 3 | 3 | 3 | yes |
 | `probability` | 1 | 7 | 8 | yes |
 | `retrig_faces` | 1 | 10 | 11 | yes |