May 2025 performance snapshot: Focused on strengthening stability, user-facing clarity, and flexible authentication workflows across two repositories. In denoland/vhost-device, completed robust error handling for the SCMI backend, config parsing, and device registration, replacing unwraps with Result-based flows, and clarifying error messages. Also fixed a user-facing typo in an SCMI error message. In apache/teaclave-trustzone-sdk, introduced login-aware session initialization by exposing login in the TEEC_OpenSession pathway and updating Session::new to apply the chosen login method, enabling more flexible authentication workflows. Impact: reduced runtime failures due to unwrapped options, easier debugging with clearer error traces, improved user experience from clearer messages, and expanded secure session support to accommodate different login methods. Skills demonstrated: Rust error handling (Result, map_err, to_string, expect), code review-driven refactoring, TEEC/TrustZone familiarity, and contribution discipline across repos.