Ship Print Forge shop site (colors, photos, 3D viewer) (#2)

## Summary

- Rebrand the Django client template as Print Forge (`client_site` → `print_forge`) with shop + shipping enabled.
- Product listings support multiple photos, color variants (shared price/description/STL, per-color stock and photos), and a photo-first / 3D-second gallery.
- Public pages use 3D printer / printed-toy photography instead of leftover t-shirt mockups; beta CI deploys on `master`.

Closes #1
Infra: [server-infra#27](ai_ml_operations/server-infra#27) (easy deploy beta).

## Test plan

- [ ] Product page shows photo first, 3D model second; color swatches swap photos and stock
- [ ] Portal can upload multiple photos and per-color qty/images; STL stays shared
- [ ] Public home/about/gallery have no t-shirt mockups
- [ ] `manage.py test` passes
- [ ] After server-infra#27: beta deploy to `print-forge-preview.aimloperations.com`

Reviewed-on: #2

site/events/tests.py

@@ -0,0 +1,95 @@
+from decimal import Decimal
+
+from django.contrib.auth import get_user_model
+from django.core import mail
+from django.test import Client, TestCase
+from django.urls import reverse
+from django.utils import timezone
+
+from events.models import Event, Ticket, TicketOrder
+from events.services import EventsError, create_ticket_order, mark_paid
+
+
+def _event(**kwargs):
+    defaults = dict(
+        title="Friday Night Prerelease",
+        starts_at=timezone.now() + timezone.timedelta(days=7),
+        venue="Main shop",
+        capacity=8,
+        price=Decimal("25.00"),
+        is_published=True,
+    )
+    defaults.update(kwargs)
+    return Event.objects.create(**defaults)
+
+
+class EventPublicTests(TestCase):
+    def test_list_hides_drafts_and_past(self):
+        _event(title="Live prerelease")
+        _event(title="Draft night", is_published=False)
+        _event(
+            title="Last week",
+            starts_at=timezone.now() - timezone.timedelta(days=2),
+        )
+        response = Client().get(reverse("events:list"))
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, "Live prerelease")
+        self.assertNotContains(response, "Draft night")
+        self.assertNotContains(response, "Last week")
+
+    def test_buy_form_renders(self):
+        event = _event()
+        response = Client().get(reverse("events:buy", kwargs={"slug": event.slug}))
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, "Pay with Stripe")
+
+
+class EventCapacityTests(TestCase):
+    def test_capacity_blocks_overbook(self):
+        event = _event(capacity=2)
+        create_ticket_order(event, email="a@example.com", quantity=2)
+        with self.assertRaises(EventsError):
+            create_ticket_order(event, email="b@example.com", quantity=1)
+
+    def test_mark_paid_issues_tickets_and_email(self):
+        event = _event(capacity=4)
+        order = create_ticket_order(
+            event, email="fan@example.com", customer_name="Lee", quantity=2
+        )
+        mark_paid(order)
+        order.refresh_from_db()
+        self.assertEqual(order.status, TicketOrder.Status.PAID)
+        self.assertEqual(Ticket.objects.filter(order=order).count(), 2)
+        self.assertEqual(event.tickets_sold, 2)
+        self.assertEqual(len(mail.outbox), 1)
+        self.assertIn(event.title, mail.outbox[0].subject)
+
+
+class EventPortalTests(TestCase):
+    def setUp(self):
+        User = get_user_model()
+        self.user = User.objects.create_user("host", password="test-pass-123")
+        self.client = Client()
+        self.client.login(username="host", password="test-pass-123")
+
+    def test_list_requires_login(self):
+        self.assertEqual(Client().get(reverse("events_portal:event_list")).status_code, 302)
+
+    def test_create_published_event(self):
+        starts = (timezone.now() + timezone.timedelta(days=3)).strftime("%Y-%m-%dT%H:%M")
+        response = self.client.post(
+            reverse("events_portal:event_new"),
+            {
+                "title": "Commander night",
+                "starts_at": starts,
+                "venue": "Back room",
+                "capacity": "16",
+                "price": "10.00",
+                "is_published": "on",
+            },
+        )
+        self.assertEqual(response.status_code, 302)
+        event = Event.objects.get()
+        self.assertEqual(event.slug, "commander-night")
+        self.assertTrue(event.is_published)
+        self.assertEqual(event.capacity, 16)