feat: add Solana payment scanning with USDT/USDC support and wallet management API

- Rewrite Solana scanner: stateless scan with processed-signature cache, query wallet + USDT ATA + USDC ATA addresses to cover all SPL transfers
  - Add network field to transaction_lock (4-tuple unique index) and order flow
  - Add wallet management endpoints (add/list/get/status/delete) with token auth
  - Add network info to Telegram payment notification
  - Add USDC hint to test script GMPay prompt
  - Add API docs and Solana scanning docs

src/mq/worker.go

@@ -23,6 +23,7 @@ const sqliteBusyRetryAttempts = 3
 type expirableOrder struct {
 	ID             uint64  `gorm:"column:id"`
 	TradeId        string  `gorm:"column:trade_id"`
+	Network        string  `gorm:"column:network"`
 	ReceiveAddress string  `gorm:"column:receive_address"`
 	Token          string  `gorm:"column:token"`
 	ActualAmount   float64 `gorm:"column:actual_amount"`
@@ -65,7 +66,7 @@ func processExpiredOrders() {
 		var orders []expirableOrder
 		err := withSQLiteBusyRetry(func() error {
 			return dao.Mdb.Model(&mdb.Orders{}).
-				Select("id", "trade_id", "receive_address", "token", "actual_amount").
+				Select("id", "trade_id", "network", "receive_address", "token", "actual_amount").
 				Where("status = ?", mdb.StatusWaitPay).
 				Where("created_at <= ?", expirationCutoff).
 				Order("id asc").
@@ -89,7 +90,7 @@ func processExpiredOrders() {
 			if !expired {
 				continue
 			}
-			if err = data.UnLockTransaction(order.ReceiveAddress, order.Token, order.ActualAmount); err != nil {
+			if err = data.UnLockTransaction(order.Network, order.ReceiveAddress, order.Token, order.ActualAmount); err != nil {
 				log.Sugar.Warnf("[mq] release expired transaction lock failed, trade_id=%s, err=%v", order.TradeId, err)
 			}
 		}

src/mq/worker_test.go

@@ -27,6 +27,7 @@ func TestProcessExpiredOrdersExpiresWaitingOrdersAndReleasesLocks(t *testing.T)
 		ActualAmount:   1,
 		ReceiveAddress: "wallet_1",
 		Token:          "USDT",
+		Network:        "tron",
 		Status:         mdb.StatusWaitPay,
 		NotifyUrl:      "https://merchant.example/callback",
 	}
@@ -36,7 +37,7 @@ func TestProcessExpiredOrdersExpiresWaitingOrdersAndReleasesLocks(t *testing.T)
 	if err := dao.Mdb.Model(order).UpdateColumn("created_at", time.Now().Add(-20*time.Minute)).Error; err != nil {
 		t.Fatalf("age expired order: %v", err)
 	}
-	if err := data.LockTransaction(order.ReceiveAddress, order.Token, order.TradeId, order.ActualAmount, time.Hour); err != nil {
+	if err := data.LockTransaction("tron", order.ReceiveAddress, order.Token, order.TradeId, order.ActualAmount, time.Hour); err != nil {
 		t.Fatalf("lock expired order: %v", err)
 	}
 
@@ -48,13 +49,14 @@ func TestProcessExpiredOrdersExpiresWaitingOrdersAndReleasesLocks(t *testing.T)
 		ActualAmount:   1.01,
 		ReceiveAddress: "wallet_1",
 		Token:          "USDT",
+		Network:        "tron",
 		Status:         mdb.StatusWaitPay,
 		NotifyUrl:      "https://merchant.example/callback",
 	}
 	if err := dao.Mdb.Create(recentOrder).Error; err != nil {
 		t.Fatalf("create recent order: %v", err)
 	}
-	if err := data.LockTransaction(recentOrder.ReceiveAddress, recentOrder.Token, recentOrder.TradeId, recentOrder.ActualAmount, time.Hour); err != nil {
+	if err := data.LockTransaction("tron", recentOrder.ReceiveAddress, recentOrder.Token, recentOrder.TradeId, recentOrder.ActualAmount, time.Hour); err != nil {
 		t.Fatalf("lock recent order: %v", err)
 	}
 
@@ -67,7 +69,7 @@ func TestProcessExpiredOrdersExpiresWaitingOrdersAndReleasesLocks(t *testing.T)
 	if expired.Status != mdb.StatusExpired {
 		t.Fatalf("expired order status = %d, want %d", expired.Status, mdb.StatusExpired)
 	}
-	lockTradeID, err := data.GetTradeIdByWalletAddressAndAmountAndToken(order.ReceiveAddress, order.Token, order.ActualAmount)
+	lockTradeID, err := data.GetTradeIdByWalletAddressAndAmountAndToken("tron", order.ReceiveAddress, order.Token, order.ActualAmount)
 	if err != nil {
 		t.Fatalf("expired order lock lookup: %v", err)
 	}
@@ -82,7 +84,7 @@ func TestProcessExpiredOrdersExpiresWaitingOrdersAndReleasesLocks(t *testing.T)
 	if recent.Status != mdb.StatusWaitPay {
 		t.Fatalf("recent order status = %d, want %d", recent.Status, mdb.StatusWaitPay)
 	}
-	lockTradeID, err = data.GetTradeIdByWalletAddressAndAmountAndToken(recentOrder.ReceiveAddress, recentOrder.Token, recentOrder.ActualAmount)
+	lockTradeID, err = data.GetTradeIdByWalletAddressAndAmountAndToken("tron", recentOrder.ReceiveAddress, recentOrder.Token, recentOrder.ActualAmount)
 	if err != nil {
 		t.Fatalf("recent order lock lookup: %v", err)
 	}