feat: show DDS SQL execution evidence

dds-backoffice/src/main/java/com/cloudhandson/ddsbackoffice/domain/DdsSqlEvidence.java

@@ -0,0 +1,19 @@
+package com.cloudhandson.ddsbackoffice.domain;
+
+/** Read-only evidence collected immediately after a protected search executes. */
+public record DdsSqlEvidence(
+    boolean available,
+    String requestId,
+    String submittedStatement,
+    String sqlId,
+    Integer childNumber,
+    String lastActiveTime,
+    Long executions,
+    String planPredicate,
+    String vpdPredicate,
+    String status
+) {
+  public static DdsSqlEvidence unavailable(String requestId, String submittedStatement, String status) {
+    return new DdsSqlEvidence(false, requestId, submittedStatement, null, null, null, null, null, null, status);
+  }
+}