// Rubber Duck Thursdays - Agent mode and custom instructions

Chris continues exploring Copilot Agent Mode and custom instructions by building a memory sequence game for the GitHub CLI extension project in Go. The changelog segment covers GitHub CLI accessibility improvements, Copilot Code Review expanding to all languages, and the introduction of Copilot premium requests.

Changelog Highlights

• GitHub CLI accessibility improvements — speech synthesis, screen reader support, enhanced prompting and progress indicators
• Copilot Code Review now supports all languages with AI-powered suggestions and contextual feedback
• Copilot Autofix updates for automated pull request suggestions
• Copilot premium requests — announcement of upcoming premium model usage limits and visibility controls in VS Code and Visual Studio
• GitHub CLI extension repo transferred to the github-samples organization

Live Coding — Memory Game with Agent Mode

• Recapped custom instructions from the previous week and their impact on Copilot output quality
• Built a memory sequence game (colors: red, yellow, green, blue) as a new subcommand in the Go-based GitHub CLI extension using Copilot Agent Mode
• Used the Cobra command library and Bubble Tea for terminal UI interactions
• Wrote detailed specs in chat — game mechanics, lives system, sequence display timing — and let Agent Mode scaffold the implementation and tests
• Played live demos of coin toss, higher/lower, and word guess games from the CLI
• Discussed potential future projects including VS Code extension development