refactor(core): 统一使用产品名称替换产品ID

将 ApplePurchaseServiceImpl、GooglePlayEntitlementApplier 与 GooglePlayWalletBenefitService 中记录的 productId 改为 productName，保持日志与业务语义一致。

src/main/java/com/yolo/keyborad/googleplay/GooglePlayEntitlementApplier.java

@@ -177,7 +177,7 @@ public class GooglePlayEntitlementApplier {
             entitlement.setActive(true);
             return;
         }
-        walletBenefitService.grant(userId, order.getId(), product.getProductId(), amount);
+        walletBenefitService.grant(userId, order.getId(), product.getName(), amount);
         entitlement.setActive(true);
         entitlement.setQuantity(amount);
         entitlement.setStartTime(new Date());

src/main/java/com/yolo/keyborad/googleplay/GooglePlayWalletBenefitService.java

@@ -20,7 +20,7 @@ public class GooglePlayWalletBenefitService {
     private final KeyboardUserWalletService walletService;
     private final KeyboardWalletTransactionService walletTransactionService;
 
-    public void grant(Long userId, Long orderId, String productId, BigDecimal amount) {
+    public void grant(Long userId, Long orderId, String productName, BigDecimal amount) {
         KeyboardUserWallet wallet = getOrCreateWallet(userId);
         BigDecimal before = defaultBalance(wallet.getBalance());
         BigDecimal after = before.add(amount);
@@ -28,7 +28,7 @@ public class GooglePlayWalletBenefitService {
         wallet.setUpdatedAt(new Date());
         walletService.saveOrUpdate(wallet);
         walletTransactionService.createTransaction(userId, orderId, amount, GOOGLE_PLAY_WALLET_TX_TYPE,
-                before, after,   productId);
+                before, after,   productName);
     }
 
     public boolean revoke(Long userId, Long orderId, BigDecimal amount) {

src/main/java/com/yolo/keyborad/service/impl/ApplePurchaseServiceImpl.java

@@ -783,7 +783,7 @@ public class ApplePurchaseServiceImpl implements ApplePurchaseService {
                 (short) 2, // 交易类型：2-苹果内购充值
                 before,
                 after,
-                  product.getProductId()
+                  product.getName()
         );
         
         // 8. 记录充值成功日志