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/shop/migrations/0001_initial.py

@@ -0,0 +1,80 @@
+# Generated by Django 6.1 on 2026-09-06 11:17
+
+import django.db.models.deletion
+import uuid
+from decimal import Decimal
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Order',
+            fields=[
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('number', models.CharField(max_length=32, unique=True)),
+                ('email', models.EmailField(max_length=254)),
+                ('customer_name', models.CharField(blank=True, max_length=200)),
+                ('status', models.CharField(choices=[('draft', 'Draft'), ('open', 'Open'), ('paid', 'Paid'), ('fulfilled', 'Fulfilled'), ('cancelled', 'Cancelled')], default='draft', max_length=16)),
+                ('amount', models.DecimalField(decimal_places=2, default=Decimal('0'), max_digits=10)),
+                ('currency', models.CharField(default='usd', max_length=8)),
+                ('shipping_address', models.JSONField(blank=True, default=dict)),
+                ('stripe_checkout_session_id', models.CharField(blank=True, max_length=255)),
+                ('hosted_checkout_url', models.URLField(blank=True)),
+                ('paid_at', models.DateTimeField(blank=True, null=True)),
+                ('notes', models.TextField(blank=True)),
+            ],
+            options={
+                'ordering': ['-created_at'],
+            },
+        ),
+        migrations.CreateModel(
+            name='Product',
+            fields=[
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('name', models.CharField(max_length=200)),
+                ('slug', models.SlugField(max_length=220, unique=True)),
+                ('sku', models.CharField(max_length=64, unique=True)),
+                ('description', models.TextField(blank=True)),
+                ('price', models.DecimalField(decimal_places=2, max_digits=10)),
+                ('currency', models.CharField(default='usd', max_length=8)),
+                ('fulfillment', models.CharField(choices=[('stocked', 'On-hand stock'), ('made_to_order', 'Made to order')], default='stocked', max_length=16)),
+                ('stock_qty', models.IntegerField(default=0)),
+                ('print_minutes', models.PositiveIntegerField(default=0, help_text='Estimated print time per unit (made-to-order).')),
+                ('filament_grams', models.PositiveIntegerField(default=0)),
+                ('is_published', models.BooleanField(default=False)),
+                ('track_inventory', models.BooleanField(default=True)),
+            ],
+            options={
+                'ordering': ['name'],
+            },
+        ),
+        migrations.CreateModel(
+            name='OrderItem',
+            fields=[
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('name', models.CharField(max_length=200)),
+                ('sku', models.CharField(max_length=64)),
+                ('quantity', models.PositiveIntegerField(default=1)),
+                ('unit_price', models.DecimalField(decimal_places=2, max_digits=10)),
+                ('print_minutes', models.PositiveIntegerField(default=0)),
+                ('order', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='items', to='shop.order')),
+                ('product', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='order_items', to='shop.product')),
+            ],
+            options={
+                'ordering': ['created_at'],
+            },
+        ),
+    ]

site/shop/migrations/0002_product_image_and_color.py

@@ -0,0 +1,72 @@
+# Generated by Django 6.1
+
+import django.db.models.deletion
+import uuid
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("core", "0002_storedfile_product_image"),
+        ("shop", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="product",
+            name="image",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name="shop_products",
+                to="core.storedfile",
+            ),
+        ),
+        migrations.CreateModel(
+            name="ProductColor",
+            fields=[
+                ("created_at", models.DateTimeField(auto_now_add=True)),
+                ("updated_at", models.DateTimeField(auto_now=True)),
+                (
+                    "id",
+                    models.UUIDField(
+                        default=uuid.uuid4,
+                        editable=False,
+                        primary_key=True,
+                        serialize=False,
+                    ),
+                ),
+                ("name", models.CharField(max_length=64)),
+                ("hex", models.CharField(default="#808080", max_length=7)),
+                ("sort_order", models.PositiveIntegerField(default=0)),
+                (
+                    "product",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="colors",
+                        to="shop.product",
+                    ),
+                ),
+            ],
+            options={
+                "ordering": ["sort_order", "name"],
+            },
+        ),
+        migrations.AddField(
+            model_name="orderitem",
+            name="color",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name="order_items",
+                to="shop.productcolor",
+            ),
+        ),
+        migrations.AddField(
+            model_name="orderitem",
+            name="color_name",
+            field=models.CharField(blank=True, max_length=64),
+        ),
+    ]

site/shop/migrations/0003_product_stl.py

@@ -0,0 +1,25 @@
+# Generated by Django 6.1
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("core", "0003_storedfile_product_stl"),
+        ("shop", "0002_product_image_and_color"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="product",
+            name="stl",
+            field=models.ForeignKey(
+                blank=True,
+                null=True,
+                on_delete=django.db.models.deletion.SET_NULL,
+                related_name="shop_product_stls",
+                to="core.storedfile",
+            ),
+        ),
+    ]

site/shop/migrations/0004_productimage_and_color_stock.py

@@ -0,0 +1,97 @@
+# Generated by Django 6.1
+
+import uuid
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+def copy_listing_image_and_color_stock(apps, schema_editor):
+    Product = apps.get_model("shop", "Product")
+    ProductImage = apps.get_model("shop", "ProductImage")
+    ProductColor = apps.get_model("shop", "ProductColor")
+    for product in Product.objects.exclude(image_id=None):
+        ProductImage.objects.create(
+            product=product,
+            color=None,
+            file_id=product.image_id,
+            sort_order=0,
+        )
+    seen = set()
+    for product in Product.objects.filter(colors__isnull=False).distinct():
+        if product.pk in seen:
+            continue
+        seen.add(product.pk)
+        first = (
+            ProductColor.objects.filter(product_id=product.pk)
+            .order_by("sort_order", "name")
+            .first()
+        )
+        if first and first.stock_qty == 0 and product.stock_qty:
+            first.stock_qty = product.stock_qty
+            first.save(update_fields=["stock_qty"])
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("core", "0003_storedfile_product_stl"),
+        ("shop", "0003_product_stl"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="productcolor",
+            name="stock_qty",
+            field=models.IntegerField(default=0),
+        ),
+        migrations.CreateModel(
+            name="ProductImage",
+            fields=[
+                ("created_at", models.DateTimeField(auto_now_add=True)),
+                ("updated_at", models.DateTimeField(auto_now=True)),
+                (
+                    "id",
+                    models.UUIDField(
+                        default=uuid.uuid4,
+                        editable=False,
+                        primary_key=True,
+                        serialize=False,
+                    ),
+                ),
+                ("sort_order", models.PositiveIntegerField(default=0)),
+                (
+                    "color",
+                    models.ForeignKey(
+                        blank=True,
+                        null=True,
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="images",
+                        to="shop.productcolor",
+                    ),
+                ),
+                (
+                    "file",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="shop_gallery_images",
+                        to="core.storedfile",
+                    ),
+                ),
+                (
+                    "product",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="images",
+                        to="shop.product",
+                    ),
+                ),
+            ],
+            options={
+                "ordering": ["sort_order", "created_at"],
+            },
+        ),
+        migrations.RunPython(
+            copy_listing_image_and_color_stock,
+            migrations.RunPython.noop,
+        ),
+    ]