--- title: "Manabu S. (@manabu-gt) | Hashnode" description: "Android Internals & Engineering Efficiency. Read the latest articles by Manabu S. on Hashnode." url: "https://hashnode.com/@manabu-gt" --- @manabu-gt # Manabu S. @manabu-gt · Joined January 2026 Android Internals & Engineering Efficiency ### [Git Worktrees: The Secret Weapon for Multi-Agent AI Coding](https://manabu.hashnode.dev/git-worktrees-the-secret-weapon-for-multi-agent-ai-coding?utm_source=hashnode&utm_medium=feed) We are entering the era of multi-agent coding. You might have one AI agent refactoring legacy code, another writing unit tests, and you (the human) trying to merge a feature. If you try to run all of this in a single git clone directory, it's a disas... 8 min read · [manabu.hashnode.dev](https://manabu.hashnode.dev/git-worktrees-the-secret-weapon-for-multi-agent-ai-coding?utm_source=hashnode&utm_medium=feed) [Feb 1](https://hashnode.com/posts/git-worktrees-the-secret-weapon-for-multi-agent-ai-coding/697efa32ffcc0325703fc40d) ### [How I Safely Upgraded a Late-2015 27" iMac to macOS Sonoma Using OCLP](https://manabu.hashnode.dev/how-i-safely-upgraded-a-late-2015-27-imac-to-macos-sonoma-using-oclp?utm_source=hashnode&utm_medium=feed) My Late-2015 27-inch iMac still runs great.The 5K display is beautiful, the machine is quiet, and performance is more than sufficient for browsing and light development work. The problem wasn't hardware — it was software. As of recently, Homebrew and... 4 min read · [manabu.hashnode.dev](https://manabu.hashnode.dev/how-i-safely-upgraded-a-late-2015-27-imac-to-macos-sonoma-using-oclp?utm_source=hashnode&utm_medium=feed) [Feb 1](https://hashnode.com/posts/how-i-safely-upgraded-a-late-2015-27-imac-to-macos-sonoma-using-oclp/697eef9fe855c16d24254b58)