feat: upload file in contact form

apps/pages/models.py

@@ -3,6 +3,10 @@ from django.db import models
 from django.utils.text import slugify
 
 from apps.core.utils import CONTENT_FORMAT_CHOICES, FORMAT_MARKDOWN, FORMAT_PLAIN, render_content
+from apps.pages.contact_uploads import (
+    contact_attachment_storage,
+    contact_attachment_upload_to,
+)
 
 RESERVED_PAGE_SLUGS = frozenset({
     "admin",
@@ -177,6 +181,28 @@ class ContactSubmission(models.Model):
         return f"{self.name} — {self.title}"
 
 
+class ContactSubmissionAttachment(models.Model):
+    submission = models.ForeignKey(
+        ContactSubmission,
+        on_delete=models.CASCADE,
+        related_name="attachments",
+    )
+    file = models.FileField(
+        upload_to=contact_attachment_upload_to,
+        storage=contact_attachment_storage,
+    )
+    original_filename = models.CharField(max_length=255)
+    uploaded_at = models.DateTimeField(auto_now_add=True)
+
+    class Meta:
+        ordering = ["uploaded_at"]
+        verbose_name = "Contact Attachment"
+        verbose_name_plural = "Contact Attachments"
+
+    def __str__(self):
+        return self.original_filename
+
+
 class FAQEntry(models.Model):
     question = models.CharField(max_length=500)
     answer = models.TextField()