feat(data): add iPhone Duo from Wikipedia model list

Author: Seungpyo1007

data/smartphone/apple/2026/iphone-duo.json

@@ -0,0 +1,23 @@
+{
+  "slug": "iphone-duo",
+  "base_model_slug": "iphone-duo",
+  "name": "iPhone Duo",
+  "brand": "apple",
+  "soc": "apple-a20-pro",
+  "release_date": "2026-10-23",
+  "ram_gb": 12,
+  "storage_options_gb": [
+    256,
+    512,
+    1024,
+    2048
+  ],
+  "battery_mah": 5400,
+  "weight_g": 254.0,
+  "os": "iOS",
+  "os_version": "27.1",
+  "verified": false,
+  "source_urls": [
+    "https://en.wikipedia.org/wiki/List_of_iPhone_models"
+  ]
+}