chore(example): add more products

Author: hyochan

CONVENTION.md

@@ -1,5 +1,12 @@
 # Project Conventions
 
+## Naming Conventions
+
+### Enum Values
+- Enum values in this codebase must use **kebab-case** (e.g., `non-consumable`, `in-app`, `user-cancelled`)
+- This matches the convention used in the auto-generated Types.kt from GraphQL schemas
+- Do not use snake_case (e.g., `non_consumable`) or camelCase for enum raw values
+
 ## Generated GraphQL/Kotlin Models
 
 - `openiap/src/main/Types.kt` is auto-generated. Regenerate it with `./scripts/generate-types.sh` after changing any GraphQL schema files.

Example/src/main/java/dev/hyo/martie/Constants.kt

@@ -4,11 +4,13 @@ object IapConstants {
     // App-defined SKU lists
     val INAPP_SKUS = listOf(
         "dev.hyo.martie.10bulbs",
-        "dev.hyo.martie.30bulbs"
+        "dev.hyo.martie.30bulbs",
+        "dev.hyo.martie.certified"  // Non-consumable
     )
 
     val SUBS_SKUS = listOf(
-        "dev.hyo.martie.premium"
+        "dev.hyo.martie.premium",
+        "dev.hyo.martie.premium_year"
     )
 }