fix: add remaining relationship guards, make Pool implement Features

- Guard 5 more test methods that use relationships on SQLite
- Pool adapter now implements all Feature interfaces since it's a
  transparent proxy that delegates to the underlying adapter

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: abnegate

src/Database/Adapter/Pool.php

@@ -21,8 +21,12 @@
 
 /**
  * Connection pool adapter that delegates database operations to pooled adapter instances.
+ *
+ * Pool implements all Feature interfaces because it is a complete proxy — every method
+ * call is delegated to the underlying pooled adapter. If the pooled adapter does not
+ * actually support a feature, the delegated call will throw at runtime.
  */
-class Pool extends Adapter
+class Pool extends Adapter implements Feature\ConnectionId, Feature\InternalCasting, Feature\Relationships, Feature\SchemaAttributes, Feature\Spatial, Feature\Timeouts, Feature\Upserts, Feature\UTCCasting
 {
     /**
      * @var UtopiaPool<covariant Adapter>

tests/e2e/Adapter/Scopes/PermissionTests.php

@@ -294,6 +294,11 @@ protected function initCollectionUpdateFixture(): array
 
     public function testCollectionPermissionsRelationships(): void
     {
+        if (! ($this->getDatabase()->getAdapter() instanceof Feature\Relationships)) {
+            $this->expectNotToPerformAssertions();
+            return;
+        }
+
         /** @var Database $database */
         $database = $this->getDatabase();
 
@@ -969,6 +974,11 @@ public function testCollectionPermissionsGetWorks(): void
 
     public function testCollectionPermissionsRelationshipsCountWorks(): void
     {
+        if (! ($this->getDatabase()->getAdapter() instanceof Feature\Relationships)) {
+            $this->expectNotToPerformAssertions();
+            return;
+        }
+
         $data = $this->initRelationshipPermissionFixture();
         $collectionId = $data['collectionId'];
 
@@ -1138,6 +1148,11 @@ public function testCollectionPermissionsRelationshipsDeleteWorks(): void
 
     public function testCollectionPermissionsRelationshipsFindWorks(): void
     {
+        if (! ($this->getDatabase()->getAdapter() instanceof Feature\Relationships)) {
+            $this->expectNotToPerformAssertions();
+            return;
+        }
+
         $data = $this->initRelationshipPermissionFixture();
         $collectionId = $data['collectionId'];
 
@@ -1147,11 +1162,6 @@ public function testCollectionPermissionsRelationshipsFindWorks(): void
         /** @var Database $database */
         $database = $this->getDatabase();
 
-        if (!($database->getAdapter() instanceof Feature\Relationships)) {
-            $this->expectNotToPerformAssertions();
-            return;
-        }
-
         $documents = $database->find(
             $collectionId
         );
@@ -1291,6 +1301,11 @@ public function testCollectionPermissionsRelationshipsUpdateThrowsException(): v
 
     public function testCollectionPermissionsRelationshipsUpdateWorks(): void
     {
+        if (! ($this->getDatabase()->getAdapter() instanceof Feature\Relationships)) {
+            $this->expectNotToPerformAssertions();
+            return;
+        }
+
         $data = $this->initRelationshipPermissionFixture();
         $collectionId = $data['collectionId'];
         $docId = $data['docId'];

tests/e2e/Adapter/Scopes/RelationshipTests.php

@@ -3611,6 +3611,11 @@ public function testCountAndSumWithRelationshipQueries(): void
      */
     public function testOrderAndCursorWithRelationshipQueries(): void
     {
+        if (! ($this->getDatabase()->getAdapter() instanceof Feature\Relationships)) {
+            $this->expectNotToPerformAssertions();
+            return;
+        }
+
         /** @var Database $database */
         $database = $this->getDatabase();