fix(email): use client/org name as From display, not Ladill product

Customer-facing outbound mail should appear from the business (organizer,
clinic, company, location), not the Ladill product brand.

app/Mail/ContactMessageMail.php

@@ -4,6 +4,7 @@ namespace App\Mail;
 
 use Illuminate\Bus\Queueable;
 use Illuminate\Mail\Mailable;
+use Illuminate\Mail\Mailables\Address;
 use Illuminate\Mail\Mailables\Content;
 use Illuminate\Mail\Mailables\Envelope;
 use Illuminate\Queue\SerializesModels;
@@ -23,7 +24,13 @@ class ContactMessageMail extends Mailable
 
     public function envelope(): Envelope
     {
+        $display = trim((string) ($this->fromName ?: $this->companyName));
+        $fromAddress = (string) config('mail.from.address');
+
         return new Envelope(
+            from: $display !== '' && $fromAddress !== ''
+                ? new Address($fromAddress, $display)
+                : null,
             subject: $this->subjectLine,
             replyTo: $this->replyToAddress ? [$this->replyToAddress] : [],
         );

app/Services/Comms/EmailService.php

@@ -33,9 +33,11 @@ class EmailService
             $logoUrl = OrganizationBranding::emailLogoUrl($organization);
             $companyName = $organization->name;
         }
+        // Client-facing From display: org/company name, never the Ladill product brand.
+        $displayName = trim((string) ($fromName ?: $companyName)) ?: null;
 
         try {
-            Mail::to($to)->send(new ContactMessageMail($subject, $body, $fromName, $replyTo, $logoUrl, $companyName));
+            Mail::to($to)->send(new ContactMessageMail($subject, $body, $displayName, $replyTo, $logoUrl, $companyName));
 
             return true;
         } catch (\Throwable $e) {

app/Services/Frontdesk/NotificationDispatcher.php

@@ -220,10 +220,11 @@ class NotificationDispatcher
                 } else {
                     try {
                         $html = OrganizationBranding::wrapEmailHtml(nl2br(e($message)), $organization);
+                        $fromName = trim((string) ($credential->bird_from_name ?: $organization->name)) ?: null;
                         $sent = $this->customerEmail->send(
                             $apiKey,
                             (string) $credential->bird_from_email,
-                            $credential->bird_from_name,
+                            $fromName,
                             (string) $host->email,
                             $title,
                             $html,