https://halilerencelik.com/blog/ Notes on AI-Native Product Design. en Fri, 04 Sep 2026 00:00:00 +0000 https://halilerencelik.com/blog/catching-what-the-model-got-wrong https://halilerencelik.com/blog/catching-what-the-model-got-wrong Fri, 04 Sep 2026 00:00:00 +0000 Halil Eren Çelik A civic reporting product built end to end with AI: a skill library of 15 chapters and 119 services, two demos that actually run, and a stutter that took five measured recordings to trace to a single CSS rule I had written myself. https://halilerencelik.com/blog/who-reads-your-design-system https://halilerencelik.com/blog/who-reads-your-design-system Wed, 26 Aug 2026 00:00:00 +0000 Halil Eren Çelik Figma's MCP server hands an agent your variables and your Code Connect map — not your usage guidance. What a model can see of a design system has narrowed to names, values and mappings, and that changes what a good system is. https://halilerencelik.com/blog/ai-as-a-design-partner https://halilerencelik.com/blog/ai-as-a-design-partner Tue, 25 Aug 2026 00:00:00 +0000 Halil Eren Çelik AI compresses the distance between an idea and a working interface, but it does not decide what deserves to exist. What actually got faster, what did not, and who stays accountable for what ships. https://halilerencelik.com/blog/from-codex-to-claude-code https://halilerencelik.com/blog/from-codex-to-claude-code Tue, 25 Aug 2026 00:00:00 +0000 Halil Eren Çelik I built halilerencelik.com with OpenAI's Codex and everything since with Claude Code. The differences that showed up in real work: where ChatGPT is still better, why a dropping Sketch MCP connection made me switch, and why the tool does not decide the outcome. https://halilerencelik.com/blog/from-handoff-to-fifteen-minutes https://halilerencelik.com/blog/from-handoff-to-fifteen-minutes Tue, 25 Aug 2026 00:00:00 +0000 Halil Eren Çelik In 2013 interface assets were exported by hand at every screen density and emailed to developers. In 2026 a prompt returns a running app. A precise account of what changed between Photoshop, Sketch, Zeplin, Figma and prompt-to-app tools — and what did not. https://halilerencelik.com/blog/is-the-application-still-there https://halilerencelik.com/blog/is-the-application-still-there Tue, 25 Aug 2026 00:00:00 +0000 Halil Eren Çelik Figma and Miro put the assistant inside the canvas. Sketch put it outside, behind a local MCP server. Two opposite bets on where AI belongs in a product — and what each one costs the application. https://halilerencelik.com/blog/the-only-ai-tool-i-use https://halilerencelik.com/blog/the-only-ai-tool-i-use Tue, 25 Aug 2026 00:00:00 +0000 Halil Eren Çelik Most AI tool lists for designers have fifteen entries. Mine has one. How a single assistant connected over MCP to Figma, GitHub and Vercel replaces a stack of tools, and where it stops being useful.