Refine subscription import and refresh flow

src/web/styles.css

@@ -2361,20 +2361,11 @@ p {
   cursor: default;
 }
 
-.client-subscription-edit.is-checking .client-subscription-submit {
-  color: var(--client-muted);
-  animation: client-validation-pulse 900ms ease-in-out infinite alternate;
-}
-
 .client-subscription-edit.is-invalid .client-subscription-submit {
   color: oklch(0.68 0.15 28);
   opacity: 0.9;
 }
 
-@keyframes client-validation-pulse {
-  to { opacity: 0.35; }
-}
-
 .client-subscription-heading {
   display: flex;
   align-items: center;