# Chung's Build Log (Chung 的開發手帳)

> Personal site of Chung (GitHub: chung223), a developer who builds native iOS and macOS apps, PWAs and small tools. The site is a self-updating build log: every project is listed with a commit heatmap, its last update, and recent changes, regenerated from GitHub several times a day. Times are in UTC+8 (Asia/Taipei).

This file is generated on every deploy. Figures below are as of 2026-10-12.

## Contact

- [LinkedIn](https://www.linkedin.com/in/weichung-lai-011841300/): the best way to reach Chung about projects, collaboration or job opportunities
- [GitHub](https://github.com/chung223): source code for the public projects

## The past 365 days

- 4,218 commits across 42 projects
- Active on 244 of 365 days; current streak 126 days
- Most commits land around 22:00 and on Tuesdays
- Languages by number of projects: JavaScript (13), HTML (8), Swift (7), TypeScript (5), Kotlin (1), PHP (1), Python (1), C (1)

## Active projects (commits in the last 30 days)

- **sprout-android** (private): Android 定位測試工具：固定位置、步行模擬與跨 App 浮動控制 Tech: Kotlin. 15 commits in the past year; last commit 2026-10-12.
- **Ceng (層 · Ceng)** (private): The native client for my personal wiki: a macOS app, an iPhone app and a share extension, in SwiftUI. Tech: Swift, iOS, macOS. 48 commits in the past year; last commit 2026-10-12.
- **after-rain** (private): 轉晴 After Rain：陪你把焦慮說出來、緩下來的 iPhone／iPad 情緒陪伴 App Tech: Swift. 79 commits in the past year; last commit 2026-10-12.
- **Personal Wiki (個人知識庫 Wiki)** (private): A self-hosted personal knowledge base: entries, a knowledge graph, and an API for native apps and AI tools. Tech: JavaScript, Web. 28 commits in the past year; last commit 2026-10-12.
- **International Summit Site (國際年會活動網站)** (private): A bilingual single-page event site. Tech: HTML, 工作, Web. 37 commits in the past year; last commit 2026-10-11.
- **CyberBanxian (賽博半仙 CyberBanxian)** (private): A fortune-telling PWA: BaZi, Zi Wei, astrology, Human Design, tarot and AI counselling. Tech: JavaScript, PWA. 411 commits in the past year; last commit 2026-10-11.
- [This Build Log (開發手帳首頁)](https://chung223.github.io/): This site: GitHub Actions pulls commit history on a schedule and renders the heatmaps and activity. Tech: JavaScript. 31 commits in the past year; last commit 2026-10-09. Source: https://github.com/chung223/chung223.github.io
- **Folium** (private): A PDF workstation to replace Acrobat Pro, with handwriting as a first-class feature. Native on iPhone, iPad and Mac. Tech: Swift, iOS, iPadOS, macOS. 93 commits in the past year; last commit 2026-10-09.
- **roam-control** (private): Choose, test and move an iPhone’s reported location. Tech: Swift. 120 commits in the past year; last commit 2026-10-08.
- **Internal Admin System (協會內部行政系統)** (private): Accounting, forms and attendance for work, with a mobile PWA. Tech: PHP, 工作, Web. 1061 commits in the past year; last commit 2026-10-08.
- [AutoVerify iOS](https://github.com/chung223/AutoVerify-iOS): An iOS Safari extension that solves CAPTCHAs on-device: the model runs in the browser and images never leave the phone. Tech: JavaScript, iOS, Safari 擴充. 2 commits in the past year; last commit 2026-10-04.
- **Ticket Watch** (private): A Chrome extension that watches ticketing sites for available seats. It only watches and alerts; buying is left to you. Tech: JavaScript, Chrome 擴充. 1 commits in the past year; last commit 2026-10-04.
- **Kaku** (private): An iOS camera app, plus its companion camera knowledge base. Tech: Swift, iOS. 45 commits in the past year; last commit 2026-10-04.
- **Pastee (貼貼 Pastee)** (private): A native Swift clipboard manager for Mac, iPhone and iPad with live iCloud sync, plus a keyboard on iOS. Tech: Swift, iOS, macOS. 110 commits in the past year; last commit 2026-10-02.
- **Mingwen Expedition (明文遠征)** (private): A communication-practice PWA with daily check-ins and game mechanics. Tech: JavaScript, PWA. 34 commits in the past year; last commit 2026-09-29.
- **LINE Booking & Room Rental (LINE 預約與教室租借系統)** (private): A LINE-based booking system for a studio: member and teacher apps inside LINE, an admin console, scheduled reminders. Tech: TypeScript, LINE, Web. 32 commits in the past year; last commit 2026-09-28.
- **Kaijiang (開講)** (private): One sentence in, a stage-ready slide deck out: AI generation, live audience interaction, transcripts and voice. Tech: TypeScript, Web. 534 commits in the past year; last commit 2026-09-28.
- **Murmo** (private): A fully on-device voice assistant for macOS: dictation, live translated captions, meeting notes and notes Q&A. Tech: Swift, macOS. 355 commits in the past year; last commit 2026-09-25.
- **Tide & Timing (潮汛 Tide & Timing)** (private): Stock and ETF picks with buy and sell timing signals for the Taiwan market. Self-hosted backend, PWA with push. Tech: Python, PWA. 87 commits in the past year; last commit 2026-09-22.
- [Daily Lab](https://chung223.github.io/daily-lab/): A surprise mini-project built by AI every day at 3 AM. Tech: HTML, AI. 388 commits in the past year; last commit 2026-09-20. Source: https://github.com/chung223/daily-lab
- [Contest Ranking Calculator (競賽名次計算工具)](https://chung223.github.io/Competition/): Score contests by rank-sum: ties, tie-breaks and prize allocation. Works offline. Tech: JavaScript, Web. 4 commits in the past year; last commit 2026-09-20. Source: https://github.com/chung223/Competition
- [Grid Hunt (謎陣 Grid Hunt)](https://chung223.github.io/cat-dog/): 100 logic puzzles plus a daily challenge. Swap the hero for a cat, a shiba, bubble tea or a rice cooker. Tech: JavaScript, 遊戲. 9 commits in the past year; last commit 2026-09-17. Source: https://github.com/chung223/cat-dog
- [Sigh Counter (唉。嘆氣計數器)](https://chung223.github.io/ah/): Log every sigh and see when and why you sigh. Data stays on your device. Tech: JavaScript, PWA. 10 commits in the past year; last commit 2026-09-16. Source: https://github.com/chung223/ah

## Earlier projects

- **Camp Course Enrollment (營隊選課系統)** (private): First-come and two-phase course selection for a high-school camp. Vue 3 and Firebase. Tech: HTML, 工作, Web. 71 commits in the past year; last commit 2026-09-10.
- [Sic Bo Practice Table (骰寶練習桌)](https://chung223.github.io/doze/): Practice Sic Bo with play chips and see each bet's long-run expected value before the dice roll. Tech: JavaScript, PWA. 7 commits in the past year; last commit 2026-09-10. Source: https://github.com/chung223/doze
- [g923-mac](https://github.com/chung223/g923): Force feedback for the Logitech G923 wheel on Apple Silicon Macs. No kext, and SIP stays on. Tech: C, macOS. 8 commits in the past year; last commit 2026-09-08.
- [Miles Toolbox (哩程玩家工具箱)](https://chung223.github.io/as-jx/): Award-ticket and cash-fare tools: a stopover mileage calculator, award charts, a four-segment planner and live flight info. Tech: HTML, Web. 84 commits in the past year; last commit 2026-09-08. Source: https://github.com/chung223/as-jx
- [BanBan (반반 BanBan 半半分帳)](https://chung223.github.io/share-money/): A bill splitter for people who always pay first. Scan receipts or photograph the bill. Tech: TypeScript, PWA. 44 commits in the past year; last commit 2026-09-07. Source: https://github.com/chung223/share-money
- **Thin Planet (瘦瘦星球)** (private): A PWA for weight-loss challenges with friends: check-ins and points, private leaderboards, AI calorie estimates from photos. Tech: JavaScript, PWA. 41 commits in the past year; last commit 2026-09-06.
- [Airport MRT Fast Transfer (機捷快轉)](https://chung223.github.io/tymetrofast/): Finds the fastest express-plus-transfer route on the Taoyuan Airport MRT, with flight boards and HSR seat availability. Tech: HTML, PWA. 73 commits in the past year; last commit 2026-09-02. Source: https://github.com/chung223/tymetrofast
- [AppPrize](https://chung223.github.io/Appprize/): Compare App Store subscription prices across regions, converted to TWD, to find the cheapest storefront. Tech: JavaScript, Web. 22 commits in the past year; last commit 2026-08-29. Source: https://github.com/chung223/Appprize
- **Self-hosted Quiz Platform (自架問答競賽平台)** (private): A customized build of the open-source Razzia, for live quizzes at events. Tech: TypeScript, Web. 182 commits in the past year; last commit 2026-07-23.
- [Nuwa Studio (女媧工坊 Nuwa Studio)](https://github.com/chung223/mindkiln): Distill a person's mental models from documents, then chat with them or predict how they would think. Tech: JavaScript, AI. 13 commits in the past year; last commit 2026-07-05.
- [crufu-run-2026](https://chung223.github.io/crufu-run-2026/): Interactive route page for the 7th CRUFU RUN in northern Taiwan. Tech: TypeScript. 14 commits in the past year; last commit 2026-04-04. Source: https://github.com/chung223/crufu-run-2026
- **Wish Jar (心願存錢筒)** (private): A glassmorphism savings-goal tool. Tech: HTML, Web. 1 commits in the past year; last commit 2026-03-01.
- [persona-forge](https://github.com/chung223/persona-forge): A persona generator for OpenClaw: pick traits and get four config files. Tech: HTML. 7 commits in the past year; last commit 2026-02-28.
- [z-image-prompt-generator](https://chung223.github.io/z-image-prompt-generator/): A Ghibli-style prompt generator for Z-Image Turbo. Tech: HTML. 12 commits in the past year; last commit 2026-02-21. Source: https://github.com/chung223/z-image-prompt-generator

## Machine-readable data

- [data.json](https://chung223.github.io/data.json): everything the site renders. Per project: title, summary, English title and summary under `en`, language, tags, commits per day for the past year, first and last commit dates. Public projects also carry recent commit messages. Site-wide: commits by hour of day and by weekday.
- [feed.xml](https://chung223.github.io/feed.xml): Atom feed with one entry per week summarizing commits per project
- [Year in review](https://chung223.github.io/year.html): totals, longest streak, busiest day, top projects

## Notes

- Projects marked private are closed-source. Only their name, one-line summary and commit counts are published; commit messages and repository URLs are not.
- Commit counts exclude merge commits and automated commits from bots.
- 5 more private projects are counted in the totals without being listed by name.