fix: allow int|string|null in Sequence validator and use loose comparison

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

Author: abnegate

src/Database/Database.php

@@ -6055,7 +6055,7 @@ public function updateDocument(string $collection, string $id, Document $documen
             $document['$createdAt'] = ($createdAt === null || !$this->preserveDates) ? $old->getCreatedAt() : $createdAt;
 
             if ($this->adapter->getSharedTables()) {
-                $document['$tenant'] = $old->getAttribute('$tenant'); // Make sure user doesn't switch tenant
+                $document['$tenant'] = $old->getTenant(); // Make sure user doesn't switch tenant
             }
             $document = new Document($document);
 
@@ -6160,8 +6160,7 @@ public function updateDocument(string $collection, string $id, Document $documen
 
                     $oldValue = $old->getAttribute($key);
 
-                    // If values are not equal we need to update document.
-                    if ($value !== $oldValue) {
+                    if ($value != $oldValue) {
                         $shouldUpdate = true;
                         break;
                     }

src/Database/Validator/Sequence.php

@@ -41,13 +41,17 @@ public function isValid($value): bool
             return false;
         }
 
-        if (!\is_string($value)) {
+        if ($value === null) {
+            return true;
+        }
+
+        if (!\is_string($value) && !\is_int($value)) {
             return false;
         }
 
         switch ($this->idAttributeType) {
-            case Database::VAR_UUID7: //UUID7
-                return preg_match('/^[a-f0-9]{8}-[a-f0-9]{4}-7[a-f0-9]{3}-[89ab][a-f0-9]{3}-[a-f0-9]{12}$/i', $value) === 1;
+            case Database::VAR_UUID7:
+                return \is_string($value) && preg_match('/^[a-f0-9]{8}-[a-f0-9]{4}-7[a-f0-9]{3}-[89ab][a-f0-9]{3}-[a-f0-9]{12}$/i', $value) === 1;
             case Database::VAR_INTEGER:
                 $start = ($this->primary) ? 1 : 0;
                 $validator = new Range($start, Database::MAX_BIG_INT, Database::VAR_INTEGER);

src/Database/Validator/Structure.php

@@ -340,9 +340,6 @@ protected function checkForInvalidAttributeValues(array $structure, array $keys)
 
             switch ($type) {
                 case Database::VAR_ID:
-                    if ($attribute['$id'] === '$tenant') {
-                        break;
-                    }
                     $validators[] = new Sequence($this->idAttributeType, $attribute['$id'] === '$sequence');
                     break;