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This is a recap of the top 10 posts on Hacker News on Mar 21, 2026.Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights(00:00) - Intro (00:17) - OpenCode – Open source AI coding agent (01:38) - Delve – Fake Compliance as a Service (02:49) - France's aircraft carrier located in real time by Le Monde through fitness app (04:15) - Our commitment to Windows quality (05:41) - The Los Angeles Aqueduct Is Wild (06:57) - A Japanese glossary of chopsticks faux pas (2022) (08:16) - Ghostling (09:23) - We rewrote our Rust WASM parser in TypeScript and it got faster (11:06) - VisiCalc Reconstructed (12:27) - Entso-E final report on Iberian 2025 blackout (14:06) - Outro OpenCode – Open source AI coding agenthttps://opencode.ai/https://news.ycombinator.com/item?id=47460525Delve – Fake Compliance as a Servicehttps://deepdelver.substack.com/p/delve-fake-compliance-as-a-servicehttps://news.ycombinator.com/item?id=47444319France's aircraft carrier located in real time by Le Monde through fitness apphttps://www.lemonde.fr/en/international/article/2026/03/20/stravaleaks-france-s-aircraft-carrier-located-in-real-time-by-le-monde-through-fitness-app_6751640_4.htmlhttps://news.ycombinator.com/item?id=47453942Our commitment to Windows qualityhttps://blogs.windows.com/windows-insider/2026/03/20/our-commitment-to-windows-quality/https://news.ycombinator.com/item?id=47459296The Los Angeles Aqueduct Is Wildhttps://practical.engineering/blog/2026/3/17/the-los-angeles-aqueduct-is-wildhttps://news.ycombinator.com/item?id=47416543A Japanese glossary of chopsticks faux pas (2022)https://www.nippon.com/en/japan-data/h01362/https://news.ycombinator.com/item?id=47460452Ghostlinghttps://github.com/ghostty-org/ghostlinghttps://news.ycombinator.com/item?id=47461378We rewrote our Rust WASM parser in TypeScript and it got fasterhttps://www.openui.com/blog/rust-wasm-parserhttps://news.ycombinator.com/item?id=47461094VisiCalc Reconstructedhttps://zserge.com/posts/visicalc/https://news.ycombinator.com/item?id=47410871Entso-E final report on Iberian 2025 blackouthttps://www.entsoe.eu/publications/blackout/28-april-2025-iberian-blackout/https://news.ycombinator.com/item?id=47452955 What is Hacker News Highlights? Daily overview of the Top 10 Hacker News posts. Post and comment summarization by AI.