feat: add script template permission checks to usePermissions hook

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

frontend/src/hooks/usePermissions.ts

@@ -71,5 +71,16 @@ export function usePermissions() {
     canManageCategories: hasMinimumRole(user, 'owner'),
     canManageGlobalCategories: effectiveRole === 'super_admin',
     canManageAccount: effectiveRole === 'super_admin' || effectiveRole === 'owner',
+
+    canManageScriptTemplate: (template: { created_by: string | null; team_id?: string | null }) => {
+      if (!user) return false
+      if (user.is_super_admin) return true
+      if (user.account_role === 'owner') return true
+      return template.created_by === user.id
+    },
+
+    canShareScriptTemplate: effectiveRole === 'super_admin' || effectiveRole === 'owner',
+
+    canCreateScriptTemplate: hasMinimumRole(user, 'engineer'),
   }
 }