December 2025: Delivered sandboxed builds for nym-vpn-client by adding BUILD_TOP environment variable support, enabling a read-only source directory and adjusted build directory path resolution. This change enhances build security, reproducibility, and CI readiness. Commit 86e1cb6c0245ba024d3c3f7ad32b390bec045562 ('Support BUILD_TOP environment for sandboxed builds (#4140)'). No major bugs fixed this month; focus was on feature delivery and stabilization of the sandboxed build flow. Overall impact: safer, more reproducible builds and groundwork for broader sandboxed CI adoption. Technologies/skills demonstrated: environment-driven build configuration, build system customization, and cross-repo collaboration.

April 2025 delivered a new Walrus CLI feature that enhances developer ergonomics by generating shell completion scripts. The Walrus CLI now includes a dedicated command to generate completion scripts for Bash, Zsh, and Fish using the clap_complete crate, simplifying onboarding and daily usage for users who rely on shell completions. This work aligns with the goal of improving developer experience and adoption for MystenLabs/walrus. Key delivery: Implemented the Walrus CLI completion command and wired it into the CLI flow. The feature is tracked under PR/issue #2003 with the associated commit implementing the feature.