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I'm Heejin, currently in the 17th cohort of Software Maestro, a software talent program run by Korea's Ministry of Science and ICT. I started on the backend with Java and Spring Boot, and these days I ship macOS apps in Swift. I built Pomopet, a menu-bar Pomodoro timer, and put it on Homebrew. On CodexBar I've filed 2 bug reports and had 4 PRs merged, and the regression I reported was fixed in v0.40.0.
Résumé & portfolio: kes02.github.io
steipete/CodexBar · Swift
A macOS menu-bar app that keeps AI coding-tool usage limits visible at a glance.
- Reported & root-caused a Claude OAuth account-switching bug (#1785).
- Caught & reproduced a regression in v0.38.0 and filed a scoped follow-up (#1886) → fixed in v0.40.0, which I verified and closed.
- Merged a feature PR that surfaces the Claude Max usage multiplier (5x/20x) in the plan label (#1932).
- Merged a fix PR that classifies an unreadable Claude OAuth credential as a terminal refresh state, so background refresh stops retrying in vain and shows re-auth guidance instead (#2650).
- Merged a fix PR pinning the Perplexity promo-credit expiry formatter to
en_US_POSIX, so the date renders the same regardless of the user's locale. It also adds regression tests that stay stable across locales and time zones (#2651). - Merged a docs PR consolidating a duplicate provider section (#1801).
Pomopet: a macOS menu-bar Pomodoro timer where you pick a pet to study with and keep going together, tracking daily streaks and an activity-grass log.
Swift · SwiftUI · SwiftData · install via homebrew-pomopet
jin-skills: seven Claude Code skills I wrote for my own workflow and packaged as a plugin, covering commit and PR conventions, ticket writing, and web research.
Claude Code · Shell
time-mirror: a timeline planner (PWA) that sets your planned and actual timelines side by side, so you can look back on whether the day went the way you meant it to.
TypeScript · PWA
js-boj-fetch: a Baekjoon problem recommender that suggests still-unsolved problems by your chosen conditions.
JavaScript
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