feat(anki): add Senren scene-switching field grouping

- Support auto, manual, and disabled Senren duplicate-card merges
- Group sentence, furigana, audio, picture, and miscInfo fields

src/renderer/index.html

@@ -499,8 +499,8 @@
             <div id="kikuSelectionStep">
               <div class="kiku-info-text">
                 A card with the same expression already exists. Select which card to keep. The other
-                card's content will be merged using Kiku field grouping. You can choose whether to
-                delete the duplicate.
+                card's content will be merged using field grouping. You can choose whether to delete
+                the duplicate.
               </div>
               <div class="kiku-cards-container">
                 <div id="kikuCard1" class="kiku-card active" tabindex="0">