SEANLU

Information Management sophomore. I build tools and automation I actually use.

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Work

Cloudflare Pages · Gemini · Web Speech

Personal IELTS Desk

A Traditional Chinese IELTS study desk. Vocabulary, Leitner review, AI mock questions, mistake notebook, writing feedback and daily planning, all in the browser.

Open the app GitHub

Personal IELTS Desk daily review page with Leitner box distribution and a flashcard

Read case notes

Problem: Existing IELTS tools cost money, require an account, and keep your data.
Approach: Everything runs in the browser. The API key lives in localStorage, data exports as JSON, and cloud sync is optional.
Trade-off: Gemini is called from the browser with no backend. Server cost is zero; users bring their own key. The review algorithm is Leitner rather than SM-2, because you can see which box you're in.
Learned: Dynamic model discovery outlasts hardcoded model names. I also wrote a handoff package for Claude Code, so later iterations don't start from zero.

Shell · ffmpeg · whisper.cpp

vid-for-agents

One command turns video into sampled frames and a local transcript that coding agents can read.

Problem: Agents read text. Video tutorials and screen recordings are a black box.
Approach: Reduce video to two things an agent can read: frames and text.
Trade-off: Speech-to-text runs locally on whisper.cpp. Slower, but no key, no upload, $0.

GitHub

Real output from the README (the CLI speaks Traditional Chinese)

$ vid ~/Downloads/demo.mp4
→ 時長 83s / 解析度 1280x720
→ 抽 12 張影格…
→ 轉逐字稿中（本機跑，長片要等）…

✅ 完成 → ~/media-out/demo-20260911-004512
├── README.md
├── frames/
├── transcript.txt
└── transcript.srt

Claude Code · Python · iOS Shortcuts

CountAgent

A personal expense agent on Claude Code. Siri appends one line of text; the agent later parses, categorises and deduplicates it.

Problem: The friction in expense apps is input. Open the app, pick a category, type the amount. Three steps and you quit.
Approach: Capture shrinks to one sentence. The agent handles interpretation later.
Budget: A month runs from the 24th to the 23rd, the credit-card cycle, so the budget matches the bill I actually pay. Quarters are three cycles.
Trade-off: Behaviour lives in CLAUDE.md, in plain language rather than code. Rules change without a code change. The price is non-determinism, so a human review step stays.

GitHub

CountAgent dashboard generated from the project's built-in demo data — Dashboard generated with the project's built-in demo data

Also built

Morph Motion
One UI object morphing through 12 states, cut to a 120 BPM track and looping without a seam. Built with Claude Code from an 11-step motion-design spec: closed-form springs, sound effects placed by their measured peaks, and a loop that stays continuous in position and velocity.

Claude Code · HTML/CSS/JS · NumPy · Playwright · FFmpegWatch with sound
Telegram → Groq → Obsidian capture pipeline. Jot a line on the phone; it gets tidied up and synced into Obsidian, and I decide what stays.Python · GitHub Actions · iOS Shortcuts
Threads video downloader, a small Python tool.Python
More work lives on GitHub.github.com/seanlu2006

About

“A tool I don't use myself isn't finished.”

I only trust demand I've felt. Now I build what I actually lack and would otherwise fix by hand.

Languages

Working on

XAUUSD discretionary tradingThere is a rule framework, but the calls are still mine. I'm working on quantifying and validating the subjective parts.
English-language X accountSelf-improvement and lifestyle, for writing practice and building a readership. @minhososerious

Outside work

Philosophy and epistemology. Narrative quality in games and film. My cat is part of the ideal day.

Write to me

Collaborations, projects, or just a conversation.

seanlu2006@gmail.com

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