April 2026 monthly summary for facebook/fboss: Focused on reliability improvements in hex parsing for large values. Replaced std::stoi with std::stoull and std::stoul to correctly parse hex inputs into uint64_t/uint32_t, eliminating out-of-range errors and ensuring correct handling of large hex values. Changes touched Utils.cpp and PciExplorer.cpp, with safety considerations for related lines in I2cAddr.h and PlatformExplorer.cpp. The patch (commit 6c1e1c0c3f9bb0324d7619099217d971c4b563c0) includes references to internal audit and review notes (D99412873), reinforcing on-call readiness. Overall impact: improved robustness of low-level parsing, reduced runtime exceptions, and strengthened platform_manager reliability; business value includes more reliable hex-based configuration and CSR/iobuf offset handling, enabling safer deployments and fewer incidents.