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Fakecloud: Local AWS cloud emulator for integration tests

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Did you ever click on an “AI Arena” expecting glorious battle and instead get a boring benchmark? If so, this project is for you: proper life-or-death fights between four models on a picturesque 8×8 grid. May the most intelligent one win!Click on any of the matches to spectate them.Code: <a href="https:&#x2F;&#x2F;github.com&#x2F;hp6&#x2F;ai-arena" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;hp6&#x2F;ai-arena</a>

Show HN: TinyAIArena watch AI agents battle it out

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I&#x27;ve spent the last 10 months building Beauty: a local, powerful greco-roman Markdown editor where the page looks finished while you type. It runs on the Mac, iPhone and in the browser, and the browser version opens without an account: <a href="https:&#x2F;&#x2F;app.markdown.beauty" rel="nofollow">https:&#x2F;&#x2F;app.markdown.beauty</a>I was frustrated with writing apps, and like most I used Apple Notes. After 2+ years immersed in Cursor, Codex and CC, I wished some interactions existed in a text editor.The Markdown renders in place as you write it, including tables (which you can drag and resize without lining up pipes), KaTeX math and Mermaid diagrams. A lot of thought went into typography and the writing experience.Your notes on the Mac are plain .md files in a folder with images next to them, so they open in anything else too. Each note keeps 200 versions. If you share a note with a link it syncs peer to peer over WebRTC while someone has it open, and the server that connects you only ever sees a random room id.Most of the ~1,000 commits went into the editor itself. It&#x27;s a contenteditable, and I don&#x27;t let the browser restructure the document at all, which was a lot more work than I expected. Building this to be performant and cross-platform required some novel approaches, which I&#x27;ll later open source. The editor is free with no account or ads, and there&#x27;s an optional subscription for sync through your own iCloud.<a href="https:&#x2F;&#x2F;www.markdown.beauty" rel="nofollow">https:&#x2F;&#x2F;www.markdown.beauty</a>

Show HN: Building a Markdown editor for Mac, iOS and web

Show HN: Lofi Cities – Pixel-art city nights with browser-generated lofi