Match banner brand, print splash, optional crop, and demo seed (#6)

## Summary
- Rebrand public site, portal, and emails from Ecoprint orange to the PRINTFORGE banner palette (navy / cyan / lime).
- Replace the loading splash with a CSS 3D-print animation; product uploads get a default-on smart crop + background filter checkbox.
- Add `manage.py seed_demo` for client walkthroughs on dev/beta only (refuses prod).

Closes #5.

## Test plan
- [ ] Public pages and buttons are cyan/lime, not orange
- [ ] Splash shows a printer building a model (or a static print if reduced motion)
- [ ] Product edit: smart-crop checked by default; uncheck stores the original photo
- [ ] `uv run python manage.py seed_demo` fills shop, contacts, leads, orders, campaigns
- [ ] `DJANGO_ENV=prod` seed_demo exits with an error

Reviewed-on: #6

site/shop/tests.py

@@ -414,6 +414,8 @@ class ShopPortalTests(TestCase):
         self.assertEqual(response.status_code, 200)
         self.assertContains(response, "Shop card preview")
         self.assertContains(response, 'name="images"')
+        self.assertContains(response, 'name="smart_crop"')
+        self.assertContains(response, "Smart crop and background filter")
         self.assertContains(response, 'name="stl"')
         self.assertContains(response, "Add color")
 
@@ -512,6 +514,32 @@ class ShopPortalTests(TestCase):
             b"".join(fetch.streaming_content), bytes(product.image.data)
         )
 
+    def test_create_product_skips_smart_crop_when_unchecked(self):
+        raw = _tiny_png()
+        upload = SimpleUploadedFile("keep.png", raw, content_type="image/png")
+        with patch("shop.imaging.cutout_subject") as cut:
+            response = self.client.post(
+                reverse("shop_portal:product_new"),
+                {
+                    "name": "Raw photo toy",
+                    "sku": "RAW-1",
+                    "price": "10.00",
+                    "stock_qty": "1",
+                    "fulfillment": "stocked",
+                    "track_inventory": "on",
+                    "smart_crop": "off",
+                    "images": upload,
+                },
+            )
+        self.assertEqual(response.status_code, 302)
+        cut.assert_not_called()
+        product = Product.objects.get(sku="RAW-1")
+        stored = product.images.get().file
+        self.assertEqual(bytes(stored.data), raw)
+        self.assertEqual(stored.filename, "keep.png")
+        framed = Image.open(BytesIO(bytes(stored.data)))
+        self.assertEqual(framed.size, (8, 8))
+
     def test_create_product_with_color_photos_and_shared_stl(self):
         catalog = SimpleUploadedFile("card.png", _tiny_png(), content_type="image/png")
         red_photo = SimpleUploadedFile("red.png", _tiny_png(), content_type="image/png")
@@ -582,6 +610,20 @@ class ShopPortalTests(TestCase):
         self.assertTrue(bytes(stored.data))
         self.assertEqual(stored.kind, StoredFile.Kind.PRODUCT_IMAGE)
 
+    def test_store_product_image_can_skip_smart_crop(self):
+        raw = _tiny_png()
+        with TemporaryUploadedFile("dot.png", "image/png", 0, "utf-8") as tmp:
+            tmp.write(raw)
+            tmp.seek(0)
+            with patch("shop.imaging.cutout_subject") as cut:
+                stored = store_product_image(
+                    upload=tmp, user=self.user, smart_crop=False
+                )
+        cut.assert_not_called()
+        self.assertEqual(bytes(stored.data), raw)
+        self.assertEqual(stored.content_type, "image/png")
+        self.assertEqual(stored.filename, "dot.png")
+
     def test_temporary_stl_upload_copied_into_database_then_unlinked(self):
         with TemporaryUploadedFile(
             "toy.stl", "application/octet-stream", 0, "utf-8"