Populate the client website template with catalog feature flags.

Extract always-on public/portal/UTM plus optional email_sms, directmail, blog, payments, social, and social_ai so new client sites can be bootstrapped from this seed.

Refs #1
Refs #2

Co-authored-by: Cursor <cursoragent@cursor.com>

site/blog/models.py

@@ -0,0 +1,45 @@
+from django.conf import settings
+from django.db import models
+from django.urls import reverse
+from django.utils import timezone
+from django.utils.text import slugify
+
+from core.models import TimeStampedModel, UUIDPrimaryKeyModel
+
+
+class Post(UUIDPrimaryKeyModel, TimeStampedModel):
+    title = models.CharField(max_length=200)
+    slug = models.SlugField(max_length=220, unique=True)
+    excerpt = models.TextField(blank=True)
+    body = models.TextField()
+    is_published = models.BooleanField(default=False)
+    published_at = models.DateTimeField(null=True, blank=True)
+    author = models.ForeignKey(
+        settings.AUTH_USER_MODEL,
+        null=True,
+        blank=True,
+        on_delete=models.SET_NULL,
+        related_name="blog_posts",
+    )
+
+    class Meta:
+        ordering = ["-published_at", "-created_at"]
+
+    def __str__(self) -> str:
+        return self.title
+
+    def get_absolute_url(self) -> str:
+        return reverse("blog:detail", kwargs={"slug": self.slug})
+
+    def save(self, *args, **kwargs):
+        if not self.slug:
+            base = slugify(self.title)[:200] or "post"
+            slug = base
+            n = 2
+            while Post.objects.filter(slug=slug).exclude(pk=self.pk).exists():
+                slug = f"{base}-{n}"
+                n += 1
+            self.slug = slug
+        if self.is_published and self.published_at is None:
+            self.published_at = timezone.now()
+        super().save(*args, **kwargs)