refactor(internal): Override equals/hashCode/toString on RequestContext

The record carries a byte[] body, so the auto-generated record methods
fall back to reference equality / identity hash for that component
(SonarQube java:S6218). Override all three to compare bytes structurally
via Arrays.equals/Arrays.hashCode, and have toString print the body
length instead of the raw byte[]@hex.

Author: thced

src/main/java/com/retailsvc/http/internal/RequestContext.java

@@ -1,11 +1,50 @@
 package com.retailsvc.http.internal;
 
+import java.util.Arrays;
 import java.util.Map;
+import java.util.Objects;
 
 /**
  * Immutable per-request data populated by {@link RequestPreparationFilter} and read by handlers via
  * {@link com.retailsvc.http.Request}. Bound to a {@link ScopedValue} for the duration of a single
  * request — never written to the {@code HttpExchange}'s context-shared attribute map.
+ *
+ * <p>{@code equals}, {@code hashCode}, and {@code toString} are overridden because the record
+ * carries a {@code byte[]} component: the auto-generated implementations use reference equality on
+ * arrays, which would treat structurally-equal contexts as different.
  */
 public record RequestContext(
-    byte[] body, Object parsedBody, String operationId, Map<String, String> pathParameters) {}
+    byte[] body, Object parsedBody, String operationId, Map<String, String> pathParameters) {
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (!(o instanceof RequestContext other)) {
+      return false;
+    }
+    return Arrays.equals(body, other.body)
+        && Objects.equals(parsedBody, other.parsedBody)
+        && Objects.equals(operationId, other.operationId)
+        && Objects.equals(pathParameters, other.pathParameters);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(Arrays.hashCode(body), parsedBody, operationId, pathParameters);
+  }
+
+  @Override
+  public String toString() {
+    return "RequestContext[body=byte["
+        + (body == null ? 0 : body.length)
+        + "], parsedBody="
+        + parsedBody
+        + ", operationId="
+        + operationId
+        + ", pathParameters="
+        + pathParameters
+        + "]";
+  }
+}