Cleanly: an Opus 5.5 rebuild of CleanMyMac

I just reverse-engineered CCleaner / CleanMyMac with Opus 5.5 for Mac & Windows PC this is insane... one tap → 14.6 GB of junk gone. fully open-source and free. → getcleanly.vercel.app here’s the build step by step: • step 1 → open Claude Code on Opus 5.5 in an empty folder, paste the prompt below + a few CleanMyMac screenshots • step 2 → Opus didn’t start coding. it drew 9 UI concepts on a canvas first. i picked one, it rebuilt the fonts, icons and glass buttons until it looked like Apple made it • step 3 → i sent it a random video of smoky gradients. Opus turned it into a live WebGL shader: “cosmic wind” rising behind the scan result • step 4 → stack: one Electron + React codebase that runs on macOS and Windows • step 5 → Opus split the build across 8 parallel agents. one wrote the junk scanner, one the disk map, one the AI assistant, one the tips & feedback screens, one the installers • step 6 → a separate safety agent attacked every line that deletes something. it caught a Windows short-name trick (DOCUME~1) that could’ve sent my whole Documents folder to the Recycle Bin. and an icon loader that could leak my Windows password hash to a remote machine • step 7 → the disk map is a physics toy: drag a folder bubble, throw it, watch it bump the others • step 8 → built-in AI: plug in Claude or ChatGPT and ask “what can i safely delete?” it only sees file names and sizes, never contents • step 9 → GitHub Actions builds the .dmg and the .exe on every release. the Mac build runs on Apple hardware in the cloud, not on my PC • step 10 → first real test: the startup-apps toggle said “Windows did not allow the change” Opus found PowerShell was losing the exit code after the admin prompt, made the app check the registry instead. next build: works one afternoon. zero lines written by me. 14.6 GB freed on the first click. that’s it... Find full prompt below ↓ Then, read how to rebuild any app from scratch with Opus 5.5 in the article below.

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