fix(i18n): eliminate all raw translation key leaks across admin pages

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

- Audited every 'key | translate' and translateService.t() usage under features/admin against en/ru/hy; 37 static keys and 8 dynamic namespaces were missing and rendered as raw keys
- Added full adminTransactions namespace (was entirely absent), adminUsers table/invite/session keys with scopeValue/statusValue/invitationStatus maps, adminMonitoring section titles and categoryValue/queueStatus/webhookStatus/levelValue maps, adminAnalytics.topProducts, adminProducts.variants/archived
- Resolved leaf/object key conflicts: dynamic 'adminMonitoring.category.*' renamed to categoryValue.*, 'adminTransactions.type.*' to typeValue.* so the leaf labels translate correctly
- Monitoring event severity now translated (levelValue) instead of raw English enum
- Merchant wording over technical: 'Background queues', 'Webhook deliveries', 'Activity log', 'Running smoothly/Slowed down/Stopped'
- Verified zero missing keys in en/ru/hy via AST-level key extraction

src/app/i18n/translations.ts

@@ -1542,6 +1542,8 @@ export interface Translations {
     addVariant: string;
     variantName: string;
     variantsHint: string;
+    variants: string;
+    archived: string;
     seoExplain: string;
     searchTitle: string;
     searchTitleHint: string;
@@ -1597,10 +1599,98 @@ export interface Translations {
     emptyTitle: string;
     emptyDescription: string;
     invitationsEmptyTitle: string;
+    title: string;
+    name: string;
+    email: string;
+    scope: string;
+    role: string;
+    roles: string;
+    lastLogin: string;
+    sessions: string;
+    currentSession: string;
+    invite: string;
+    sendInvite: string;
+    revoke: string;
+    passwordlessHint: string;
+    confirmSuspend: string;
+    scopeValue: {
+      marketplace: string;
+      office: string;
+    };
+    statusValue: {
+      active: string;
+      invited: string;
+      suspended: string;
+    };
+    invitationStatus: {
+      pending: string;
+      accepted: string;
+      expired: string;
+      revoked: string;
+    };
+  };
+  adminTransactions: {
+    search: string;
+    type: string;
+    method: string;
+    fraud: string;
+    flagged: string;
+    retry: string;
+    audit: string;
+    emptyTitle: string;
+    emptyDescription: string;
+    status: {
+      all: string;
+      pending: string;
+      success: string;
+      failed: string;
+      retried: string;
+    };
+    typeValue: {
+      all: string;
+      payment: string;
+      refund: string;
+      qr_payment: string;
+    };
   };
   adminMonitoring: {
     eventsEmptyTitle: string;
     eventsEmptyDescription: string;
+    health: string;
+    queues: string;
+    depth: string;
+    webhooks: string;
+    endpoint: string;
+    event: string;
+    events: string;
+    category: string;
+    level: string;
+    message: string;
+    categoryValue: {
+      all: string;
+      audit: string;
+      security: string;
+      login: string;
+      failed_login: string;
+      api: string;
+      error: string;
+      warning: string;
+    };
+    queueStatus: {
+      healthy: string;
+      degraded: string;
+      down: string;
+    };
+    webhookStatus: {
+      delivered: string;
+      failed: string;
+      pending: string;
+    };
+    levelValue: {
+      info: string;
+      warning: string;
+      error: string;
+    };
     systemState: string;
     backendConnectivity: string;
     connected: string;
@@ -1615,6 +1705,7 @@ export interface Translations {
   adminAnalytics: {
     topProductsEmptyTitle: string;
     topProductsEmptyDescription: string;
+    topProducts: string;
     print: string;
     tabsLabel: string;
     tab: {