neteja cppcheck (44 → 0) i aïllar impls de tercers

source/core/resources/resource_pack.cpp

@@ -9,16 +9,13 @@
 #include <filesystem>
 #include <fstream>
 #include <iostream>
+#include <numeric>
 
 namespace Resource {
 
     // Calculate CRC32 checksum for data verification
     auto Pack::calculateChecksum(const std::vector<uint8_t>& data) -> uint32_t {
-        uint32_t checksum = 0x12345678;
-        for (unsigned char byte : data) {
-            checksum = ((checksum << 5) + checksum) + byte;
-        }
-        return checksum;
+        return std::accumulate(data.begin(), data.end(), static_cast<uint32_t>(0x12345678), [](uint32_t acc, unsigned char byte) { return ((acc << 5) + acc) + byte; });
     }
 
     // XOR encryption (symmetric - same function for encrypt/decrypt)