Ruby Weekly issue 789 covers several notable items: the Rage fiber-based real-time Ruby framework (v1.21.0) with Rails compatibility and new agent skills; Discourse-sponsored work fixing YAML comment preservation via Psych::Pure; a keynote-backed argument that Ruby is the best language for AI apps, alongside RubyLLM 1.12's new agent-focused DSL; a deep-dive on how a single pipe made WaterDrop/Karafka 50% faster; Gem in a Box 3.0 for self-hosted gem hosting with Ruby 4.0 support; and miscellaneous links including Tailwind CSS v4.2 new color palettes, a Rails-powered RSS reader, and a Wikipedia text extractor.
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