struggling a little with API exposure between modules and C++ types, needs a complete overhaul for checksums -- snapshot commit -- not functional

modules/verify/include/checksum.hpp

@@ -0,0 +1,51 @@
+/**
+* @file checksum.hpp
+ * @brief Header file for package checksum verification functions
+ *
+ * Defines functions for verifying checksums of DPM package components.
+ *
+ * @copyright Copyright (c) 2025 SILO GROUP LLC
+ * @author Chris Punches <chris.punches@silogroup.org>
+ *
+ * Part of the Dark Horse Linux Package Manager (DPM)
+ */
+#pragma once
+
+#include <string>
+#include <filesystem>
+#include <dpmdk/include/CommonModuleAPI.hpp>
+#include "checksum.hpp"
+
+/**
+ * @brief Verify the CONTENTS_MANIFEST_DIGEST file
+ *
+ * Compares checksums in manifest with actual file checksums
+ *
+ * @param stage_dir Path to the stage directory
+ * @param build_module Handle to the loaded build module
+ * @return 0 on success, non-zero on failure
+ */
+int checksum_verify_contents_digest(const std::string& stage_dir, void* build_module);
+
+/**
+ * @brief Verify the HOOKS_DIGEST file
+ *
+ * Compares checksums in hooks digest with actual file checksums
+ *
+ * @param stage_dir Path to the stage directory
+ * @param build_module Handle to the loaded build module
+ * @return 0 on success, non-zero on failure
+ */
+int checksum_verify_hooks_digest(const std::string& stage_dir, void* build_module);
+
+/**
+ * @brief Verify the PACKAGE_DIGEST file
+ *
+ * Calculates the combined checksum of CONTENTS_MANIFEST_DIGEST and HOOKS_DIGEST
+ * and compares it with the value in PACKAGE_DIGEST
+ *
+ * @param stage_dir Path to the stage directory
+ * @param build_module Handle to the loaded build module
+ * @return 0 on success, non-zero on failure
+ */
+int checksum_verify_package_digest(const std::string& stage_dir, void* build_module);