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] : [],
         );