Remove silent deduplication from all namespace expressions

All four Reside/NotReside namespace expressions now consistently assign
the $namespaces array directly without array_unique(). The previous
deduplication was undocumented defensive coding added inconsistently
only to the positive variants, with no real use case behind it.

https://claude.ai/code/session_01Hyx6VbsyC9RHb57zSuPamr

Author: claude

src/Expression/ForClasses/NotResideInOneOfTheseNamespacesExactly.php

@@ -18,7 +18,7 @@ class NotResideInOneOfTheseNamespacesExactly implements Expression
 
     public function __construct(string ...$namespaces)
     {
-        $this->namespaces = array_values(array_unique($namespaces));
+        $this->namespaces = $namespaces;
     }
 
     public function describe(ClassDescription $theClass, string $because): Description

src/Expression/ForClasses/NotResideInTheseNamespaces.php

@@ -18,7 +18,7 @@ class NotResideInTheseNamespaces implements Expression
 
     public function __construct(string ...$namespaces)
     {
-        $this->namespaces = array_values(array_unique($namespaces));
+        $this->namespaces = $namespaces;
     }
 
     public function describe(ClassDescription $theClass, string $because): Description

src/Expression/ForClasses/ResideInOneOfTheseNamespaces.php

@@ -18,7 +18,7 @@ class ResideInOneOfTheseNamespaces implements Expression
 
     public function __construct(string ...$namespaces)
     {
-        $this->namespaces = array_values(array_unique($namespaces));
+        $this->namespaces = $namespaces;
     }
 
     public function describe(ClassDescription $theClass, string $because): Description

src/Expression/ForClasses/ResideInOneOfTheseNamespacesExactly.php

@@ -18,7 +18,7 @@ class ResideInOneOfTheseNamespacesExactly implements Expression
 
     public function __construct(string ...$namespaces)
     {
-        $this->namespaces = array_values(array_unique($namespaces));
+        $this->namespaces = $namespaces;
     }
 
     public function describe(ClassDescription $theClass, string $because): Description

tests/Unit/Expressions/ForClasses/NotResideInOneOfTheseNamespacesExactlyTest.php

@@ -52,22 +52,6 @@ public function test_it_should_return_false_if_reside_in_exact_namespace(): void
         );
     }
 
-    public function test_it_should_deduplicate_namespaces(): void
-    {
-        $haveNameMatching = new NotResideInOneOfTheseNamespacesExactly('MyNamespace', 'MyNamespace');
-
-        $classDesc = ClassDescription::getBuilder('MyNamespace\HappyIsland', 'src/Foo.php')->build();
-        $because = 'we want to add this rule for our software';
-        $violations = new Violations();
-        $haveNameMatching->evaluate($classDesc, $violations, $because);
-
-        self::assertEquals(1, $violations->count());
-        self::assertEquals(
-            'should not reside in one of these namespaces exactly: MyNamespace because '.$because,
-            $haveNameMatching->describe($classDesc, $because)->toString()
-        );
-    }
-
     public function test_it_should_check_multiple_namespaces_in_or(): void
     {
         $haveNameMatching = new NotResideInOneOfTheseNamespacesExactly('AnotherNamespace', 'ASecondNamespace', 'AThirdNamespace');

tests/Unit/Expressions/ForClasses/NotResideInTheseNamespacesTest.php

@@ -40,22 +40,6 @@ public function test_it_should_return_false_if_reside_in_namespace(): void
         );
     }
 
-    public function test_it_should_deduplicate_namespaces(): void
-    {
-        $haveNameMatching = new NotResideInTheseNamespaces('MyNamespace', 'MyNamespace');
-
-        $classDesc = ClassDescription::getBuilder('MyNamespace\HappyIsland', 'src/Foo.php')->build();
-        $because = 'we want to add this rule for our software';
-        $violations = new Violations();
-        $haveNameMatching->evaluate($classDesc, $violations, $because);
-
-        self::assertEquals(1, $violations->count());
-        self::assertEquals(
-            'should not reside in one of these namespaces: MyNamespace because '.$because,
-            $haveNameMatching->describe($classDesc, $because)->toString()
-        );
-    }
-
     public function test_it_should_check_multiple_namespaces_in_or(): void
     {
         $haveNameMatching = new NotResideInTheseNamespaces('AnotherNamespace', 'ASecondNamespace', 'AThirdNamespace');