[Admin135158]

This PR addresses a potential memory safety issue in src/transform.cc. The original WriteBytes function used raw C-style pointer arithmetic and memcpy to append data to a std::vector<uint8_t>. Modern C++ static analyzers (and compilers with -Wunsafe-buffer-usage) flag this pattern because it bypasses the vector's internal bounds checking, risking out-of-bounds writes if the offset or length is miscalculated. This patch replaces the manual resize and memcpy logic with std::vector::insert(). This is a secure-by-design memory safety improvement that eliminates raw pointer arithmetic and leverages the C++ standard library's built-in bounds checking. (Note: I also updated the Makefile to use ar crs instead of ar crf for LLVM compatibility on Termux/Android environments).