refactor: reorganize proto clients and settings UI

Move generated proto imports under the new server api path and align gRPC auth/client usage with the renamed clients. Polish settings UI details by adding a shared language icon and refining Ads VAST table presentation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/routes/settings/SecurityNConnected/components/SecurityLanguageRow.vue

@@ -28,12 +28,7 @@ const updateSelectedLanguage = (event: Event) => {
         actionsClass="flex items-center gap-2"
     >
         <template #icon>
-            <svg xmlns="http://www.w3.org/2000/svg" class="w-6 h-6 text-info" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
-                <circle cx="12" cy="12" r="10" />
-                <path d="M2 12h20" />
-                <path d="M12 2a15 15 0 0 1 0 20" />
-                <path d="M12 2a15 15 0 0 0 0 20" />
-            </svg>
+            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 600 536"><path d="M269 477c58-131 80-180 128-288 5-12 16-19 29-19s24 7 29 19l128 288c7 16 0 35-16 42s-35 0-42-16l-20-45H347l-20 45c-7 16-26 23-42 16s-23-26-16-42zm107-83h100l-50-113-50 113z" fill="#a6acb9"/><path d="M170 10c18 0 32 14 32 32v32h128c18 0 32 14 32 32s-14 32-32 32h-10l-8 23c-16 45-41 87-72 122 14 9 29 17 44 24l51 22-26 59-51-23c-23-10-45-22-66-36-21 17-44 32-69 44l-35 18c-15 8-35 1-43-15-7-15-1-35 15-43l34-17c17-8 32-18 47-28-14-13-27-27-39-41l-21-24c-11-14-9-34 5-46 13-11 33-9 45 5l20 24c11 14 24 27 37 39 28-31 50-66 64-106v-1H42c-18 0-32-14-32-32s14-32 32-32h96V42c0-18 14-32 32-32z" fill="#1e3050"/></svg>
         </template>
 
         <template #actions>