Rubber Duck Thursdays - Back to building GitHub CLI Extensions
In this episode, Chris reviews the GitHub Changelog covering organization-level Copilot custom instructions, CodeQL for Actions workflow security analysis, Copilot Code Review language expansion, secret scanning alert dismissals, and GitHub Mobile updates. The coding segment tackles theme switching for the Copilot Airways web app and a Tailwind CSS upgrade using GitHub Codespaces and Copilot Agent Mode.
Changelog Highlights
- Organization custom instructions for Copilot enterprise customers
- MAI-DSR1 — Microsoft AI-refined version of DeepSeek R1 available in GitHub Models
- Copilot Code Review now supports C, C++, Kotlin, and Swift — covering over 90% of file types
- CodeQL for GitHub Actions workflow security analysis is now generally available
- Secret scanning alert dismissal requests with REST API support
- Copilot for Xcode adds @workspace context, Claude 3.7 Sonnet, and GPT-4.5
- GitHub Mobile updates including multi-model Copilot Chat and sub-issues
- Dependabot scheduling with cron expressions
Live Coding
- Fixed dark mode and light mode theme switching on the Copilot Airways web app
- Attempted a Tailwind CSS upgrade in a fresh GitHub Codespace
- Discussion of Copilot Agent Mode workflows and custom instructions for guiding AI-assisted development
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