7.29.26 | Substack writers need a website, Codex Security, Kimi K3 Architecture Overview

This is a recap of the top 10 posts on Hacker News on Jul 29, 2026. Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights (00:00) - Intro (00:19) - Substack writers, you need a website (01:46) - Codex Security (03:13) - Kimi K3 Architecture Overview and Notes (04:40) - Delayed Gratification – Proud to Be 'Last to Breaking News' (05:55) - Show HN: I was tired of opening 2 tabs for every HN link, so I made a userscript (07:10) - Zig's Incremental Compilation Internals (08:48) - Steel Bank Common Lisp version 2.6.7 (09:56) - Half-Life ported to Mac OS 9 (11:05) - Discovering Cryptographic Weaknesses with Claude (12:27) - Una GPS smart watch – Repairable, USB-C charging, developer-friendly (13:31) - Outro Substack writers, you need a website https://elizabethtai.com/2026/06/10/substack-writers-you-need-a-website/ https://news.ycombinator.com/item?id=49086788 Codex Security https://github.com/openai/codex-security https://news.ycombinator.com/item?id=49089755 Kimi K3 Architecture Overview and Notes https://sebastianraschka.com/blog/2026/kimi-k3-architecture-notes.html https://news.ycombinator.com/item?id=49085698 Delayed Gratification – Proud to Be 'Last to Breaking News' https://www.slow-journalism.com/ https://news.ycombinator.com/item?id=49085731 Show HN: I was tired of opening 2 tabs for every HN link, so I made a userscript https://github.com/twalichiewicz/HNewhere https://news.ycombinator.com/item?id=49090607 Zig's Incremental Compilation Internals https://mlugg.co.uk/posts/incremental-compilation-internals/ https://news.ycombinator.com/item?id=49085666 Steel Bank Common Lisp version 2.6.7 https://sbcl.org/all-news.html?2.6.7 https://news.ycombinator.com/item?id=49086971 Half-Life ported to Mac OS 9 https://mac-classic.com/news/half-life-ported-to-mac-os-9/ https://news.ycombinator.com/item?id=49089814 Discovering Cryptographic Weaknesses with Claude https://www.anthropic.com/research/discovering-cryptographic-weaknesses https://news.ycombinator.com/item?id=49087091 Una GPS smart watch – Repairable, USB-C charging, developer-friendly https://unawatch.com/ https://news.ycombinator.com/item?id=49084813