v3: button styling consistency pass

src/components/DumpCreateModal.tsx

@@ -307,7 +307,7 @@ export function DumpCreateModal({ onClose }: DumpCreateModalProps) {
           {phase === "create"
             ? (
               <>
-                <div className="dump-mode-toggle">
+                <div className="visibility-toggle">
                   <button
                     type="button"
                     className={mode === "url" ? "active" : ""}
@@ -412,7 +412,7 @@ export function DumpCreateModal({ onClose }: DumpCreateModalProps) {
                     />
                   </div>
 
-                  <div className="dump-mode-toggle">
+                  <div className="visibility-toggle">
                     <button
                       type="button"
                       className={!isPrivate ? "active" : ""}

src/components/PlaylistCreateForm.tsx

@@ -73,7 +73,7 @@ export function PlaylistCreateForm(
         onChange={(e) => setDescription(e.target.value)}
         rows={3}
       />
-      <div className="dump-mode-toggle">
+      <div className="visibility-toggle">
         <button
           type="button"
           className={isPublic ? "active" : ""}