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Notes on engineering, product thinking, and lessons learned,
shared across note, Zenn, Qiita, and a personal blog.

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Next.js 16 Turbopack + Claude in Chrome: How VS Code Looked Like 180GB

Zenn JP May 3, 2026
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Zenn Next.js 16 Turbopack + Claude in Chrome: How VS Code Looked Like 180GB JP May 3, 2026
note Sharing Love Chats with AI Feels Risky — The Privacy Design Behind It JP May 3, 2026
Qiita Cognito Anonymous Auth + Server-side Signup — Building a No-login iOS App Safely JP May 2, 2026
Blog How to Add Tables to a GitHub README — Generate Markdown Tables from CSV/JSON JPEN Apr 27, 2026
Blog How to Convert HTML to Markdown JPEN Apr 27, 2026
Blog Markdown Table Syntax Cheatsheet: Pipes & Alignment JPEN Apr 27, 2026
note Asking AI for Relationship Advice — How It Differs from Human Advice JP Apr 25, 2026
Blog How to Build an Evening Routine: 60, 90, and 30-Minute Templates JPEN Apr 25, 2026
Blog Phone Before Bed: A Practical Guide to Put It Down Without Going Cold Turkey JPEN Apr 25, 2026
Blog Sleep Cycles: REM, NREM, 4-6 Cycles, and the 90-Minute Myth JPEN Apr 25, 2026
Qiita Multi-model Routing with Amazon Bedrock Converse API — A Two-tier Design with Qwen3 80B (Free) and Claude Sonnet 4.6 JP Apr 24, 2026
Qiita Local OCR + Cloud LLM: A Hybrid Architecture for an iOS App That Never Uploads Images JP Apr 22, 2026
Zenn Building Evidence-based Psychology into an LLM Prompt — Designing a Relationship Analysis AI JP Apr 21, 2026
Blog What Time Should You Go to Bed? Free Wake-Time Calculator JPEN Apr 21, 2026
Blog When You Cannot Fall Asleep: A Calm Reset for the Night and the Week JPEN Apr 21, 2026
Blog Sleep Debt Recovery Plan: Why Weekends Don't Fix It (1–2 Week Method) JPEN Apr 21, 2026
note Hitting the Limits of Local LLMs and Ending Up with Cloud AI JP Apr 20, 2026
Qiita Don't Let LLM JSON Output Break You — A Multi-stage Decoder & Auto-repair Parser (Swift Codable) JP Apr 19, 2026
Blog Jet Lag Recovery Plan: 3 Steps for Your First Night JPEN Apr 19, 2026
Blog Why You Wake Up Tired After 8 Hours of Sleep (and What to Try Tonight) JPEN Apr 19, 2026
Blog 30-Minute Wind-Down Routine — Fall Asleep in 4 Simple Blocks JPEN Apr 19, 2026
Qiita A Complete Guide to Implementing Three-tier (Free / Basic / Pro) Subscriptions with StoreKit 2 JP Apr 18, 2026
note How a New TikTok Account Stayed at 0 Views for a Week — 4 Pitfalls and the Moment They Cleared JP Apr 17, 2026
Blog How to Convert CSV to a Markdown Table JPEN Apr 17, 2026
Blog How to Convert Markdown to HTML JPEN Apr 17, 2026
Zenn Architecture of a Screenshot-to-AI Analysis App — iOS MVVM + AWS Serverless for a Relationship Analysis AI JP Apr 15, 2026
note Building a Relationship-analysis AI App to Calm the Fear of Being Left on Read JP Apr 15, 2026
Qiita Detecting the Sender from Apple Vision OCR boundingBox — Structuring a Chat Screenshot JP Apr 15, 2026
Blog Can JSON Have Comments? JSONC vs JSON5 vs the _comment Trick JPEN Apr 13, 2026
Blog YAML Syntax: The 7 Mistakes That Break K8s, Compose, and CI JPEN Apr 13, 2026
note Building and Shipping an Indie iOS App to the App Store — A Full Solo Log JP Apr 10, 2026
Qiita SFSpeechRecognizer timestamp=0 Bug and How to Work Around It — Why You Should Only Trust isFinal Results JP Apr 10, 2026
Blog curl Pretty Print JSON: 4 Copy-Paste One-Liners for 2026 JPEN Apr 10, 2026
note An Engineer Bad at English Built an English Learning App for Himself JP Apr 7, 2026
Qiita Building a Fully On-device English Subtitle Generator with Speech and Translation Frameworks JP Apr 7, 2026
Blog Best Free Chrome JSON Extensions 2026: JSONView, Formatter, FormatArc JPEN Mar 25, 2026
Qiita Converting CSV API Responses to JSON and Processing Them with jq JP Mar 24, 2026
Qiita How to Debug When You Get Stuck on Kubernetes YAML JP Mar 22, 2026
Medium How I Debug Malformed JSON from APIs EN Mar 21, 2026
Medium Building a Static Data Converter Site with Next.js EN Mar 20, 2026
Zenn Building an Indie Data-conversion Site — From SEO Design to Publishing on npm JP Mar 20, 2026
Qiita 3 Ways to Pretty-print curl JSON Responses Instantly JP Mar 20, 2026
Blog FormatArc Chrome Extension: JSON, YAML, CSV & Markdown Tools JPEN Mar 20, 2026
Blog formatarc — Format JSON, YAML & CSV from the Terminal (npm / npx) JPEN Mar 20, 2026
Blog JSON Pretty Print — Free Online JSON Formatter, jq & Code Examples (2026) JPEN Mar 20, 2026
Blog How to Write JSON: A Complete Syntax Guide JPEN Mar 20, 2026
Blog What is CSV? Understanding Comma-Separated Values JPEN Mar 20, 2026
Blog What is JSON? A Beginner-Friendly Guide JPEN Mar 20, 2026
Blog What is YAML? A Practical Introduction JPEN Mar 20, 2026
Blog YAML vs JSON in 2026: 7 Key Differences and When to Use Each JPEN Mar 19, 2026
Blog How to Fix JSON Parse Errors and Unexpected Token JPEN Mar 18, 2026
Blog How to Convert YAML to JSON: 3 Easy Methods JPEN Mar 17, 2026
Blog How to Convert CSV to JSON: A Step-by-Step Guide JPEN Mar 16, 2026
Blog How to Convert JSON to YAML: Quick and Easy Methods JPEN Mar 15, 2026
54 entries total