2026.03.21

最近 SAMARI で要約された技術ニュースをお届けします。Show Notes GitHub Copilotコーディングエージェントのセッション可視性が向上 - More visibility into Copilot coding agent sessions (https://github.blog/changelog/2026-03-19-more-visibility-into-copilot-coding-agent-sessions) GitHub Mobile（Android）のナビゲーション刷新 - A smoother navigation experience in GitHub Mobile for Android (https://github.blog/changelog/2026-03-20-a-smoother-navigation-experience-in-github-mobile-for-android) RaycastでCopilot coding agentのログをリアルタイム表示 - Monitor Copilot coding agent logs live in Raycast (https://github.blog/changelog/2026-03-20-monitor-copilot-coding-agent-logs-live-in-raycast) Copilot coding agentのコミットがセッションログに紐づくようになりました - Trace any Copilot coding agent commit to its session logs (https://github.blog/changelog/2026-03-20-trace-any-copilot-coding-agent-commit-to-its-session-logs) Copilotの使用状況で自動モデル選択を実際のモデル名に解決 - Copilot usage metrics now resolve auto model selection to actual models (https://github.blog/changelog/2026-03-20-copilot-usage-metrics-now-resolve-auto-model-selection-to-actual-models) Rails Rails 今週の更新（2026/03/20） - This Week in Rails: March 20, 2026 (https://rubyonrails.org/2026/3/20/this-week-in-rails) Rust Rustの課題と対策 - What we heard about Rust's challenges, and how we can address them (https://blog.rust-lang.org/2026/03/20/rust-challenges.md/) Rustの課題と対処法（調査まとめ） - What we heard about Rust's challenges, and how we can address them (https://blog.rust-lang.org/2026/03/20/rust-challenges/) Kotlin KotlinConf’26：注目トークのおすすめ - KotlinConf 2026: Talks to Help You Navigate the Schedule (https://blog.jetbrains.com/kotlin/2026/03/kotlinconf-2026-talks-schedule/) AWS AWS DataSyncが全ロケーションでSecrets Manager対応 - AWS DataSync now supports AWS Secrets Manager for all location types (https://aws.amazon.com/about-aws/whats-new/2026/03/aws-datasync-secrets-manager/) AWS Neuron、Amazon EKSでDynamic Resource Allocation（DRA）をサポート - AWS Neuron announces support for Dynamic Resource Allocation with Amazon EKS (https://aws.amazon.com/about-aws/whats-new/2026/03/neuron-eks-dra-support/) BGM: yuhei komatsu (https://dova-s.jp/_contents/author/profile446.html) 音声: Google Cloud Text-to-Speech AI (https://cloud.google.com/text-to-speech)