refactor: improve resource payload building and flexibility

- Contact: only include avatar and groups if they have values
- Properties: only include non-null values in payload
- ValidateForVoice: make sender nullable, set voice default to false
- JournalResource: remove unused replies method

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Author: cl77

src/Resource/Contacts/Contact.php

@@ -25,11 +25,13 @@ public static function fromApi(object $obj): Contact {
     }
 
     public function toPayload(): array {
-        return [
-            ...$this->properties->toPayload(),
-            'avatar' => $this->avatar,
-            'groups[]' => $this->groups,
-        ];
+        $payload = $this->properties->toPayload();
+        if ($this->avatar !== null) $payload['avatar'] = $this->avatar;
+        // Only include groups if not empty
+        if (!empty($this->groups)) {
+            $payload['groups'] = $this->groups;
+        }
+        return $payload;
     }
 
     public function getAvatar(): string {

src/Resource/Contacts/Properties.php

@@ -34,18 +34,18 @@ public static function fromApi(object $obj): Properties {
     }
 
     public function toPayload(): array {
-        return [
-            'address' => $this->getAddress(),
-            'birthday' => $this->getBirthday()->format('Y-m-d'),
-            'city' => $this->getCity(),
-            'email' => $this->getEmail(),
-            'firstname' => $this->getFirstname(),
-            'home_number' => $this->getHomeNumber(),
-            'lastname' => $this->getLastname(),
-            'mobile_number' => $this->getMobileNumber(),
-            'notes' => $this->getNotes(),
-            'postal_code' => $this->getPostalCode(),
-        ];
+        $payload = [];
+        if ($this->getAddress() !== null) $payload['address'] = $this->getAddress();
+        if ($this->getBirthday() !== null) $payload['birthday'] = $this->getBirthday()->format('Y-m-d');
+        if ($this->getCity() !== null) $payload['city'] = $this->getCity();
+        if ($this->getEmail() !== null) $payload['email'] = $this->getEmail();
+        if ($this->getFirstname() !== null) $payload['firstname'] = $this->getFirstname();
+        if ($this->getHomeNumber() !== null) $payload['home_number'] = $this->getHomeNumber();
+        if ($this->getLastname() !== null) $payload['lastname'] = $this->getLastname();
+        if ($this->getMobileNumber() !== null) $payload['mobile_number'] = $this->getMobileNumber();
+        if ($this->getNotes() !== null) $payload['notes'] = $this->getNotes();
+        if ($this->getPostalCode() !== null) $payload['postal_code'] = $this->getPostalCode();
+        return $payload;
     }
 
     public function getAddress(): ?string {

src/Resource/Journal/JournalResource.php

@@ -65,19 +65,6 @@ public function outbound(JournalParams $params = new JournalParams): array {
         return $this->fetch('outbound', JournalOutbound::class, $params);
     }
 
-    /**
-     * @return JournalReply[]
-     * @throws ForbiddenIpException
-     * @throws InvalidApiKeyException
-     * @throws InvalidOptionalArgumentException
-     * @throws MissingAccessRightsException
-     * @throws RandomException
-     * @throws SigningHashVerificationException
-     * @throws UnexpectedApiResponseException
-     */
-    public function replies(JournalParams $params = new JournalParams): array {
-        return $this->fetch('replies', JournalReply::class, $params);
-    }
 
     /**
      * @return JournalVoice[]

src/Resource/ValidateForVoice/ValidateForVoice.php

@@ -7,9 +7,9 @@ class ValidateForVoice {
     protected ?string $error = null;
     protected ?string $formattedOutput = null;
     protected ?int $id = null;
-    protected string $sender;
+    protected ?string $sender = null;
     protected bool $success;
-    protected bool $voice;
+    protected bool $voice = false;
 
     public function __construct(object $data) {
         if (property_exists($data, 'code')) $this->code = (int)$data->code;
@@ -38,7 +38,7 @@ public function getId(): ?int {
         return $this->id;
     }
 
-    public function getSender(): string {
+    public function getSender(): ?string {
         return $this->sender;
     }