fix: Store Delegate object in delegating and authorized account directories for proper deletion (#6681)

include/xrpl/protocol/detail/ledger_entries.macro

@@ -466,6 +466,7 @@ LEDGER_ENTRY(ltDELEGATE, 0x0083, Delegate, delegate, ({
     {sfAuthorize,            soeREQUIRED},
     {sfPermissions,          soeREQUIRED},
     {sfOwnerNode,            soeREQUIRED},
+    {sfDestinationNode,      soeOPTIONAL},
     {sfPreviousTxnID,        soeREQUIRED},
     {sfPreviousTxnLgrSeq,    soeREQUIRED},
 }))

include/xrpl/protocol_autogen/ledger_entries/Delegate.h

@@ -90,6 +90,30 @@ public:
         return this->sle_->at(sfOwnerNode);
     }
 
+    /**
+     * @brief Get sfDestinationNode (soeOPTIONAL)
+     * @return The field value, or std::nullopt if not present.
+     */
+    [[nodiscard]]
+    protocol_autogen::Optional<SF_UINT64::type::value_type>
+    getDestinationNode() const
+    {
+        if (hasDestinationNode())
+            return this->sle_->at(sfDestinationNode);
+        return std::nullopt;
+    }
+
+    /**
+     * @brief Check if sfDestinationNode is present.
+     * @return True if the field is present, false otherwise.
+     */
+    [[nodiscard]]
+    bool
+    hasDestinationNode() const
+    {
+        return this->sle_->isFieldPresent(sfDestinationNode);
+    }
+
     /**
      * @brief Get sfPreviousTxnID (soeREQUIRED)
      * @return The field value.
@@ -203,6 +227,17 @@ public:
         return *this;
     }
 
+    /**
+     * @brief Set sfDestinationNode (soeOPTIONAL)
+     * @return Reference to this builder for method chaining.
+     */
+    DelegateBuilder&
+    setDestinationNode(std::decay_t<typename SF_UINT64::type::value_type> const& value)
+    {
+        object_[sfDestinationNode] = value;
+        return *this;
+    }
+
     /**
      * @brief Set sfPreviousTxnID (soeREQUIRED)
      * @return Reference to this builder for method chaining.

include/xrpl/tx/transactors/delegate/DelegateSet.h

@@ -38,11 +38,7 @@ public:
 
     // Interface used by AccountDelete
     static TER
-    deleteDelegate(
-        ApplyView& view,
-        std::shared_ptr<SLE> const& sle,
-        AccountID const& account,
-        beast::Journal j);
+    deleteDelegate(ApplyView& view, std::shared_ptr<SLE> const& sle, beast::Journal j);
 };
 
 }  // namespace xrpl