diff --git a/Modules/Countries/Support/Iso3166.php b/Modules/Countries/Support/Iso3166.php
index 49f457a5..a975e6ed 100644
--- a/Modules/Countries/Support/Iso3166.php
+++ b/Modules/Countries/Support/Iso3166.php
@@ -57,7 +57,7 @@ final class Iso3166
     {
         $normalised = str_pad((string) $code, 3, '0', STR_PAD_LEFT);
 
-        if (! preg_match('/^[0-9]{3}$/', $normalised)) {
+        if (! preg_match('/^\d{3}$/', $normalised)) {
             throw new InvalidArgumentException('ISO 3166-1 numeric codes must contain exactly three digits.');
         }
 
diff --git a/Modules/Helpdesk/Resources/assets/css/app.css b/Modules/Helpdesk/Resources/assets/css/app.css
index 16f7afa6..c87e40c8 100644
--- a/Modules/Helpdesk/Resources/assets/css/app.css
+++ b/Modules/Helpdesk/Resources/assets/css/app.css
@@ -648,10 +648,9 @@ span.flatpickr-weekday {
     gap: .5rem;
     border-radius: .85rem;
     padding: .62rem 1.05rem;
-    font-size: .875rem;
+    font-size: .95rem;
     line-height: 1.25rem;
     font-weight: 800;
-    font-size: .95rem;
     color: #ffffff !important;
     text-decoration: none !important;
     border: 1px solid rgba(255,255,255,.14);
diff --git a/Modules/Helpdesk/Tests/Concerns/BuildsHelpdeskFixtures.php b/Modules/Helpdesk/Tests/Concerns/BuildsHelpdeskFixtures.php
index d47847fb..b5ec6a9c 100644
--- a/Modules/Helpdesk/Tests/Concerns/BuildsHelpdeskFixtures.php
+++ b/Modules/Helpdesk/Tests/Concerns/BuildsHelpdeskFixtures.php
@@ -22,14 +22,12 @@ trait BuildsHelpdeskFixtures
 {
     protected function user(array $attributes = []): User
     {
-        /** @var User $user */
-        $user = User::factory()->create(array_merge([
+        /** @var User */
+        return User::factory()->create(array_merge([
             'name' => 'Helpdesk User',
             'email' => fake()->unique()->safeEmail(),
             'password' => Hash::make('password'),
         ], $attributes));
-
-        return $user;
     }
 
     protected function agent(array $attributes = []): User
diff --git a/app/Providers/TenancyServiceProvider.php b/app/Providers/TenancyServiceProvider.php
index f4c6e83b..f36b418f 100644
--- a/app/Providers/TenancyServiceProvider.php
+++ b/app/Providers/TenancyServiceProvider.php
@@ -95,7 +95,7 @@ class TenancyServiceProvider extends ServiceProvider
 
     public function register()
     {
-        //
+        // No container bindings are required; tenancy is configured through event listeners in boot().
     }
 
     public function boot()
diff --git a/sonar-project.properties b/sonar-project.properties
index ee646724..316ea282 100644
--- a/sonar-project.properties
+++ b/sonar-project.properties
@@ -9,7 +9,7 @@ sonar.exclusions=vendor/**,node_modules/**,storage/**,bootstrap/cache/**,public/
 # S116: snake_case Livewire public properties intentionally mirror form/database fields.
 # S4833: Deployer/Laravel module bootstraps intentionally load recipe/route files.
 # Web title checks are not valid on Blade/Vue partials/components which are not standalone HTML documents.
-sonar.issue.ignore.multicriteria=e1,e2,e3,e4,e5,e6
+sonar.issue.ignore.multicriteria=e1,e2,e3,e4,e5,e6,e7,e8
 sonar.issue.ignore.multicriteria.e1.ruleKey=php:S103
 sonar.issue.ignore.multicriteria.e1.resourceKey=**/*.php
 sonar.issue.ignore.multicriteria.e2.ruleKey=php:S1808
@@ -22,3 +22,10 @@ sonar.issue.ignore.multicriteria.e5.ruleKey=php:S4833
 sonar.issue.ignore.multicriteria.e5.resourceKey=Modules/*/Providers/*ServiceProvider.php
 sonar.issue.ignore.multicriteria.e6.ruleKey=Web:PageWithoutTitleCheck
 sonar.issue.ignore.multicriteria.e6.resourceKey=**/*.{blade.php,vue}
+
+# Sonar CSS does not parse Tailwind v4 directives used by the application stylesheet.
+sonar.issue.ignore.multicriteria.e7.ruleKey=css:S4662
+sonar.issue.ignore.multicriteria.e7.resourceKey=resources/css/app.css
+# Empty module Sass entrypoints are intentional placeholders for module-owned assets.
+sonar.issue.ignore.multicriteria.e8.ruleKey=css:S4667
+sonar.issue.ignore.multicriteria.e8.resourceKey=Modules/*/Resources/assets/sass/app.scss
diff --git a/tests/Feature/Settings/ProfileUpdateTest.php b/tests/Feature/Settings/ProfileUpdateTest.php
index fccf19fd..caf1b0ce 100644
--- a/tests/Feature/Settings/ProfileUpdateTest.php
+++ b/tests/Feature/Settings/ProfileUpdateTest.php
@@ -14,7 +14,7 @@ class ProfileUpdateTest extends TestCase
 
     public function test_profile_page_is_displayed(): void
     {
-        $this->actingAs($user = User::factory()->create());
+        $this->actingAs(User::factory()->create());
 
         $this->get('/settings/profile')->assertOk();
     }