refactor(ui): replace modal dialogs with toast/sheet components

Remove DialogVant/NotifyVant and add Toast and Sheet components with
useToast, useReveal, and usePageTransition composables. Rework
Navigation, RegisterView, and styles across both apps; rebuild dist assets.

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

apps/user-app/src/views/report/ReportView.vue

@@ -296,8 +296,8 @@ onBeforeUnmount(() => observer?.disconnect())
 }
 
 .rep__tab.is-on {
-  background: @ink;
-  border-color: @ink;
+  background: @primary;
+  border-color: @primary;
   color: #fff;
 }
 
@@ -427,7 +427,7 @@ onBeforeUnmount(() => observer?.disconnect())
   padding: 13px;
   border: none;
   border-radius: 14px;
-  background: @ink;
+  background: @primary;
   color: #fff;
   font-family: inherit;
   font-size: 14px;