Contributed the sms-gate notification plugin to the birrjs subscription billing library for Ethiopian apps, enabling SMS-based payment notifications through the birrjs ecosystem.

Built the entire GNOME Shell extension from scratch — clipboard monitoring with D-Bus signal emission, window management APIs, paste-to-active-window, UI indicator, and launcher integration. Handles multi-content-type clipboard (text, images, file URIs), GObject signal lifecycle management, and seamless bi-directional communication with the Vicinae desktop launcher.

Replaced bluetoothctl subprocess calls with direct D-Bus communication via BlueZ, eliminating shell parsing overhead and improving reliability of Bluetooth device scanning and management.