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Copilot CLI update: chronicle, plugins, and fleet mode

GitHub Checkout

In this episode of GitHub Checkout, we sit down with Copilot CLI Product Manager Ryan Hecht to explore the latest experimental features. We cover the plugin marketplace, the /chronicle slash command for self-healing prompts, and how to run Claude Opus 4.6, GPT-5.4, and Gemini 3 simultaneously. We also walk through how /fleet mode and autopilot can handle massive refactoring tasks while you step away.

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CSS

Cascading Style Sheets (CSS) is a language used most often to style and improve upon the appearance of views.

This recommendation was created by GitHub staff

Metabob-app

Review your code using AI to detect problems and vulnerabilities before code gets merged.

Trending repository

Music Assistant is a free, opensource Media library manager that connects to your streaming services and a wide range of connected speakers. The server is the beating heart, the core of Music Assistant and must run on an always-on device like a Raspberry Pi, a NAS or an Intel NUC or alike.

  • Updated Jun 17, 2026
  • Python
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POEditor

POEditor is a highly scalable translation management system and localization platform. It is designed to simplify the translation of software, such as apps, sites and games and to automate tasks in the localization process.

Integrated with GitHub, it syncs with your repos automatically. You don't ever need to touch a language file.

Slack and Microsoft Teams integrations make it easy to get realtime updates about the localization process and the translation progress.