[framework] TxCore → common-framework (ACM-FW-001)

boot/common-framework/src/main/java/com/klaro/acquirecore/framework/TxService.java

@@ -0,0 +1,18 @@
+package com.klaro.acquirecore.framework;
+
+/**
+ * Interface for transaction-aware services.
+ * Migrated from txcore.h TX_SERVICE callback structure.
+ */
+public interface TxService {
+
+    String getServiceName();
+
+    <T> TxResult<T> execute(TxServiceRegistry.TxOperation<T> operation);
+
+    TxContext beginTransaction();
+
+    TxResult<Void> commit(TxContext context);
+
+    TxResult<Void> rollback(TxContext context, String reason);
+}