Build notes, lessons learned, and technical essays.https://aymeric.dijoux.dev/en-UShttps://aymeric.dijoux.dev/en/writing/2026-06-ti-cok-mercuriales-app/https://aymeric.dijoux.dev/en/writing/2026-06-ti-cok-mercuriales-app/I'm building an app for Réunion: the real price of fruit and veg already exists, public, stuck in PDFs nobody reads. Ti Cok sets it free — what's cheap, when, and where. The build, and why I challenge the idea before believing it.Fri, 19 Jun 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-06-3000-english-words-app/https://aymeric.dijoux.dev/en/writing/2026-06-3000-english-words-app/The 3000 most useful English words, ordered by frequency, as flashcards with spaced repetition. It all lives in the browser, the data is the single source of truth, and it's online on GitHub Pages. The story of a mini-app designed to last with zero maintenance.Tue, 16 Jun 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-06-ai-world-cup-predictions/https://aymeric.dijoux.dev/en/writing/2026-06-ai-world-cup-predictions/Three frontier models, 72 group-stage matches, predictions frozen before kickoff, and a leaderboard that updates itself. A benchmark dressed up as a game — and the perfect excuse to ship a quick mini-app on GitHub Pages.Tue, 16 Jun 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-06-remote-reunion-backend-architecture/https://aymeric.dijoux.dev/en/writing/2026-06-remote-reunion-backend-architecture/Freelance developer based in Réunion Island, +2h from Paris, fully remote. Spoiler: the time difference changed nothing. What mattered was the backend architecture I laid down for a team that had to scale — DDD, microservices decomposition, guidelines that hold.Mon, 15 Jun 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-06-flue-agent-framework/https://aymeric.dijoux.dev/en/writing/2026-06-flue-agent-framework/The Astro team ships "The Agent Harness Framework." Flue takes the harness from the previous article and turns it into a real framework. I ported our profile-analysis agent to it to see.Mon, 08 Jun 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-06-harness-agent-sdk/https://aymeric.dijoux.dev/en/writing/2026-06-harness-agent-sdk/An LLM predicts text; an agent runs tasks. In between sits the harness. I set out to understand it, and realized my mental pattern already described the Claude Agent SDK.Mon, 08 Jun 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-06-developer-orchestrator/https://aymeric.dijoux.dev/en/writing/2026-06-developer-orchestrator/The dev job is shifting from typing to steering: orchestrating agents, writing the spec, guaranteeing that what ships is what was expected. What changes when you stop coding to produce, and start coding to validate.Thu, 04 Jun 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-05-clean-code-react-native-claude/https://aymeric.dijoux.dev/en/writing/2026-05-clean-code-react-native-claude/An AI agent ships «average» code by default: 300-line files, any everywhere, logic in the JSX. Here are the 10 rules I wrote for VoiceJournal, and why they hold.Fri, 29 May 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-05-claude-code-hooks/https://aymeric.dijoux.dev/en/writing/2026-05-claude-code-hooks/Going from Claude that codes to Claude that disciplines itself. SessionStart to bootstrap the repo, PreToolUse to block sketchy commands, Stop to notify you when a task ends. Four concrete hooks running silently in my repos.Sun, 24 May 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-05-claude-code-on-the-web/https://aymeric.dijoux.dev/en/writing/2026-05-claude-code-on-the-web/A GitHub issue from the phone, a Claude Code session auto-triggered in a cloud container, a PR popping up in Slack, a merge from the GitHub app. My indie workflow when I'm away from the laptop — and what works vs. what doesn't.Sun, 24 May 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-05-rebuild-site-astro-geo/https://aymeric.dijoux.dev/en/writing/2026-05-rebuild-site-astro-geo/Astro 6, Tailwind 4 with @theme, content collections + MDX, bilingual FR/EN, and a full GEO setup (llms.txt, JSON-LD entity graph, robots.txt with allow for AI bots). How and why I rebuilt it all.Fri, 22 May 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-05-spec-driven-development/https://aymeric.dijoux.dev/en/writing/2026-05-spec-driven-development/Brainstorming → spec → detailed plan → sub-agent execution with review. The workflow I've been using for a few months that finally makes AI usable on multi-day projects, not just snippets.Tue, 19 May 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-05-app-store-ai/https://aymeric.dijoux.dev/en/writing/2026-05-app-store-ai/VoiceJournal made it to the App Store, but not on the first try. The concrete rejections I got, the exact fixes, and the process traps (DSA, ITMS-90186, RevenueCat, App Groups) that aren't anywhere in Apple's docs.Sat, 16 May 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-05-rtk-token-optimization/https://aymeric.dijoux.dev/en/writing/2026-05-rtk-token-optimization/A Rust CLI proxy that sits between Claude Code and your shell commands. It compresses verbose output (git status, ls, jest...) before it ever reaches the context window. One command to install, instant payoff.Tue, 12 May 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-05-voicejournal-intro/https://aymeric.dijoux.dev/en/writing/2026-05-voicejournal-intro/You talk for 30 seconds. Whisper transcribes, Claude writes your journal, gives you a Mind Score and tags your emotions. Here's how it's built and why I did it.Fri, 08 May 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-04-claude-md/https://aymeric.dijoux.dev/en/writing/2026-04-claude-md/A markdown file at the root of your repo describing how we code here. Read by Claude (the agent) before every session, and by humans at first glance. It's become my most important engineering contract.Thu, 30 Apr 2026 00:00:00 GMThttps://aymeric.dijoux.dev/en/writing/2026-04-stack-to-build-an-app/https://aymeric.dijoux.dev/en/writing/2026-04-stack-to-build-an-app/Three apps shipped in two years. The stack I'd pick again tomorrow, the anti-patterns I lived through, and the specific traps you won't find in the docs.Mon, 20 Apr 2026 00:00:00 GMT