fix(chain-db): use chain tip for tx confirmations

Author: AndrewWestberg

newm-chain-db/src/main/kotlin/io/newm/chain/database/repository/LedgerRepositoryImpl.kt

@@ -1576,9 +1576,9 @@ class LedgerRepositoryImpl : LedgerRepository {
 
     override fun queryTransactionConfirmationCounts(txIds: List<String>): Map<String, Long> =
         transaction {
-            val tipBlockExpression = LedgerUtxosTable.blockCreated.max()
+            val tipBlockExpression = ChainTable.blockNumber.max()
             val tipBlock: Long =
-                LedgerUtxosTable.select(tipBlockExpression).firstOrNull()?.let {
+                ChainTable.select(tipBlockExpression).firstOrNull()?.let {
                     it[tipBlockExpression]
                 } ?: 0L
 
@@ -1590,7 +1590,7 @@ class LedgerRepositoryImpl : LedgerRepository {
                     .associate { row ->
                         val txId = row[LedgerUtxosTable.txId]
                         val blockCreated = row[LedgerUtxosTable.blockCreated]
-                        txId to max(tipBlock - blockCreated, 0L)
+                        txId to max(tipBlock - blockCreated + 1L, 0L)
                     }
 
             txIds.associateWith { txId -> (ledgerMap[txId] ?: 0L) }

newm-chain-db/src/test/kotlin/io/newm/chain/database/repository/QueryTransactionInfoRepositoryTest.kt

@@ -214,6 +214,40 @@ class QueryTransactionInfoRepositoryTest {
         }
     }
 
+    @Test
+    fun `queryTransactionConfirmationCounts uses chain tip and is inclusive`() {
+        (100L..106L).forEach { blockNumber ->
+            insertChainBlock(blockNumber = blockNumber, slotNumber = 1000L + blockNumber)
+        }
+        insertLedgerUtxo(
+            address = "addr_test_dest1",
+            txId = "target-tx",
+            txIx = 0,
+            lovelace = "2500",
+            blockCreated = 100L,
+        )
+
+        val result = repository.queryTransactionConfirmationCounts(listOf("target-tx", "missing-tx"))
+
+        assertThat(result["target-tx"]).isEqualTo(7L)
+        assertThat(result["missing-tx"]).isEqualTo(0L)
+    }
+
+    @Test
+    fun `queryTransactionConfirmationCounts returns zero when chain tip is missing`() {
+        insertLedgerUtxo(
+            address = "addr_test_dest1",
+            txId = "target-tx",
+            txIx = 0,
+            lovelace = "2500",
+            blockCreated = 100L,
+        )
+
+        val result = repository.queryTransactionConfirmationCounts(listOf("target-tx"))
+
+        assertThat(result["target-tx"]).isEqualTo(0L)
+    }
+
     private fun insertChainBlock(
         blockNumber: Long,
         slotNumber: Long,