YingzhenWang

What I build我能做什么

Production data and platforms.生产环境的数据与平台。

1. 2026 — now2026 — 至今

   Independent product engineer独立产品工程师

   Design and ship my own apps, firmware and sites with AI agents alongside my full-time role.在全职工作之余，与 AI agent 协作设计、发布自己的 app、firmware 和网站。

2. Apr 2024 — now2024 年 4 月 — 至今

   Data Analyst & Engineer

   Internal software for an operations business, across four workstreams:为运营型企业开发内部软件，涵盖四条主线：

   01Backend services & routing data后端服务与路径数据

   Build versioned REST services with request validation and consistent error handling. Geospatial pipelines supply time windows, access rules and network friction for routing and allocation.开发带版本管理、请求校验和统一错误处理的 REST 服务；通过地理空间管线提供时间窗、通行规则和路网阻抗，支持路径规划与派单。

   • FastAPI
   • SQLAlchemy
   • Pydantic
   • GeoPandas
   • Shapely
   • OSMnx
   • NetworkX

   02Data pipelines & analytics数据管线与分析

   Build ETL into reporting marts with automated checks, lineage and monitoring, plus real-time KPI dashboards with data-quality alerts. Analytics uses a separate cloud account with read-only access; reports never query production.构建汇入报表数据集市的 ETL，配备自动校验、血缘和监控，以及带数据质量告警的实时 KPI 看板。分析环境使用独立云账号和只读权限，报表不直接查询生产库。

   • PostgreSQL
   • Snowflake
   • dbt
   • AWS S3 · Lambda
   • Tableau

   03Multi-role operations platform多角色运营平台

   Prototyped five surfaces: public tracking, customer portal, warehouse web and mobile, admin console and React Native driver app. Planned a production rebuild with a single-writer backend, facts → status → projections, idempotent commands, per-package state machines and async bulk-label workers.完成五个端的原型：公开查询、客户门户、仓库 Web 与移动端、管理后台、React Native 司机 app。制定生产级重构方案：单写入者后端、事实 → 状态 → 投影、幂等命令、按件状态机和异步批量面单生成 worker。

   • React
   • React Native
   • Supabase
   • Redis
   • JWT

   04AI assistant in production上线的 AI 助手

   Run an LLM assistant behind an API with auth, rate limits, fallbacks and observability. Classify personal data before model calls.通过 API 提供 LLM 助手，配备鉴权、限流、降级和可观测性；调用模型前先对个人信息分级。

   • LLM APIs
   • auth
   • rate limiting
   • observability

   Across all four: unit and integration tests, CI on GitHub Actions, Docker, AWS (EC2, S3, Lambda), profiling hot paths, API specs, runbooks, UAT and release management.贯穿四条主线：单元与集成测试、GitHub Actions CI、Docker、AWS（EC2、S3、Lambda）、热点路径性能分析、API 规范、运维手册、UAT 和发布管理。

   Business figures and internal details are omitted; available on request.业务数字和内部细节均已略去，可应要求提供。

Computing, data science, philosophy and multimedia.计算机、数据科学、哲学与多媒体。

• Capstone, team lead: resolution-aware histopathology image enhancement毕业项目（组长）：分辨率感知的病理图像增强
  U-Net image enhancement with OpenCV preprocessing for large image sets. Cut inference time by 97% against the baseline and improved diagnostic accuracy.用 U-Net 增强图像，OpenCV 批量预处理。推理耗时比基线降低 97%，诊断准确率提升。 Bronze Medal · Incubator Research Showcase铜奖 · Incubator Research Showcase
• FoodVision, team lead（组长）
  YOLOv8 and an LLM track fridge contents and suggest recipes, with a live tracking GUI and structured storage.用 YOLOv8 和 LLM 追踪冰箱食材、推荐菜谱，配有实时追踪界面和结构化存储。

• First Class Honours in Computer Science计算机科学一等荣誉学位
• Thesis: Data-Driven Optimisation for Cost-Effective 3D Printed Soft Robotic Grippers荣誉论文：Data-Driven Optimisation for Cost-Effective 3D Printed Soft Robotic GrippersHigh Distinction
• The Accessible Wallet, lead 3D designer, AID-LAB（AID-LAB，3D 设计负责人）
  A 3D-printed wallet for people with limited finger dexterity. New cash and card slots, refined each iteration through user feedback.为手指灵活度受限者设计的 3D 打印钱包。现金和卡槽采用新结构，每轮按用户反馈改进。 Winner · Autodesk & PrintLab 2023 Make:able ChallengeWinner · Autodesk & PrintLab 2023 Make:able 挑战赛 Winners announcement获奖公告 weareprintlab.com

LIQUID · KINETIC · SILKFluid, kinetic type and 3D cloth on a 240×320 screen, running without an FPU.在无 FPU 的设备上，用 240×320 屏幕呈现流体、动态字体和 3D 布料。

Try it · LIQUID in the browser试玩 · 浏览器版 LIQUID

Drag inside the bottle to tilt and stir; tap to splash. This JavaScript version recreates the C original, which runs at 21 fps on a card without an FPU.在瓶内拖动可倾斜、搅动，轻点溅水。此 JavaScript 版本复现了 C 原作，原作在无 FPU 的卡片上运行，帧率为 21 fps。

01 LIQUID
AURORA60 FPS

440 PARTICLES

AURORA AMBER MERCURY

0 G Splash溅水

Particles粒子

440

This browser本浏览器

– fps

Tilt倾角

0°

COPYCAT CLUBA call-and-response rhythm game on an offline card, with verified scores on a public leaderboard.离线卡片上的节奏应答游戏，成绩经验证后进入公开排行榜。

Official Pick · FoloToy AI Passport, chosen from 800+ community works官方精选 · FoloToy AI Passport 社区，从 800+ 件作品中入选

Levels关卡

21

Classic modes · device原有玩法 · 真机

39–57 fps

Payload载荷

29 B

Leaderboard排行榜 copycatrank.yingzhenwang.com Community page社区作品页 ai-passport.folotoy.cn/plays/849

v8: BACK PORCH SCAT and the iPhone versionv8：BACK PORCH SCAT 与 iPhone 版

v8, released on 16 October 2026: 21 levels, all open. The original 16 are joined by BACK PORCH SCAT in EASY, NORMAL, HARD, BOOGALOO and REMIX. REMIX combines CHOP, TRIO and CHOIR in one arrangement. The navy home menu adds SONGS. Each tier keeps its own best result and supports RANK tickets. Every level has all-time and weekly boards; the overall board sums each level’s best score. Score ties favour EARS, then LIGHT, then FULL. Boards are bilingual HTML with no JavaScript.v8 于 2026 年 10 月 16 日发布：共 21 关，全部开放。原有 16 关之外，新增 BACK PORCH SCAT 的 EASY、NORMAL、HARD、BOOGALOO、REMIX 五档。REMIX 在同一首编曲中组合 CHOP、TRIO、CHOIR。深蓝色主菜单新增 SONGS。五档各自保存最好成绩，支持 RANK 票根。每关有历史榜和周榜，总榜将各关最好成绩相加。同分时按 EARS、LIGHT、FULL 排序。榜单为双语 HTML，不用 JavaScript。

iPhone versioniPhone 版In progress开发中

Swift 6 strict concurrency, Metal 2D rendering with post-processing and SDF type, and an AVAudioEngine-driven C synth. Offline, no accounts or tracking. The CARD pack contains the original 16 card levels.Swift 6 严格并发、带后处理和 SDF 字体的 Metal 2D 渲染，以及 AVAudioEngine 驱动的 C 合成器。离线，无账号、无追踪。CARD 关卡包包含卡片原有的 16 关。

Project-defined flash checks limit the luminance change between frames to 0.25, or 0.10 with flash reduction on.项目定义的逐帧闪烁检查把相邻帧亮度变化限制在 0.25 以内，开启减少闪烁后为 0.10。

OCTAVEEleven music tools on one pocket card: tuner, metronome, chords, guitar and ukulele fingerings, ear training and singing practice, all offline.一张口袋卡片上的十一个音乐工具：调音、节拍、和弦、吉他与尤克里里指法、练耳、练唱，全程离线。

Official Pick · FoloToy AI Passport community官方精选 · FoloToy AI Passport 社区

Tools工具

11

Firmware固件

886 KB

Interface界面

EN · 中文

Illustrated manual图文说明书 octave.yingzhenwang.com Community page社区作品页 ai-passport.folotoy.cn/plays/1170

FRET release, device measurements, iPhone versionFRET 已发布、真机测量、iPhone 版

Revision 2715, released on 13 October 2026: FRET adds guitar and ukulele chord diagrams, bringing the toolkit to eleven tools. EAR plays its questions one octave above the displayed keyboard, with a lowest note of G3.修订 2715 于 2026 年 10 月 13 日发布：新增吉他与尤克里里和弦指法工具 FRET，共十一个工具。EAR 的题目比屏幕键盘高一个八度，最低音为 G3。

FRET, the 11th tool第 11 个工具 FRETLive已上线

Chord shapes for 6-string guitar and 4-string ukulele: 12 roots × 15 chord types, with finger numbers, barres, open and muted strings, the note on each string and its function in the chord. Playback alternates strum and arpeggio. Shapes come from hand-written open and movable templates. Firmware 885,840 B.六弦吉他和四弦尤克里里的和弦指法：12 个根音 × 15 种和弦，标出手指编号、横按、空弦和静音弦、每根弦的音名及其在和弦中的功能。播放在扫弦和琶音之间交替。指法来自手写的开放式和可移动模板。固件 885,840 B。

On-device measurement. A build that zeroes the PCM after synthesis keeps all CPU and DSP work running with the speaker silent. Measured on 12 October across the original ten tools: 38.5–58 fps, home 48–50 fps, minimum free heap 65.4 KB. Pitch detection averages 0.3–1.9 ms per call, up to 3.5 ms in TUNE. Nine fixed PCM inputs give bit-identical results on the card and on the host.真机测量。专门的构建在合成后把 PCM 清零，喇叭不出声，CPU 和 DSP 照常运行。10 月 12 日测量原有十个工具：38.5–58 fps，主页 48–50 fps，最低空闲堆 65.4 KB。音高检测每次平均 0.3–1.9 ms，TUNE 中最长 3.5 ms。九组固定 PCM 输入在卡上和主机上的结果逐位相同。

OCTAVE for iPhoneOCTAVE iPhone 版In progress开发中

A native app with ten tools, redesigned for touch. The six CHORD arrangements are checked against the original C firmware compiled separately: 72 loops, 5,664 events match. Audio runs natively at 44.1 or 48 kHz, and the screen follows the heard time of each note. 200 core and 272 app tests pass.原生 app，十个工具，按触屏重新设计交互。CHORD 的六种编排与单独编译的原版 C 固件逐事件对照：72 个循环、5,664 个事件一致。音频以 44.1 或 48 kHz 原生运行，画面跟随每个音实际被听到的时间。Core 200 项、App 272 项测试通过。

Shipped已上线macOS menu-bar app · Swift · v0.6.0macOS 菜单栏 app · Swift · v0.6.0

PaceShows whether your Claude Code pace will hit the plan limit before it resets, and when.判断当前的 Claude Code 用量节奏会不会在额度重置前用完，以及什么时候用完。

Windows窗口

5h · 7d · per model分模型

Source数据来源

/usage · status line

Credentials凭据

None不读取

Details详情

Readings读数

Three local sources, none of them a credential. claude -p "/usage" runs Claude Code’s local usage command (0 turns, $0) every 5 minutes by default. A pace-bridge relay sits in front of the existing status line and copies the rate_limits snapshot Claude Code sends after every response. Token counts in local transcripts calibrate the burn rate within about 30 s of a burst.三个本地数据源，都不是凭据。claude -p "/usage" 调用 Claude Code 的本地 usage 命令（0 turns，$0），默认每 5 分钟一次。pace-bridge 接在原有 status line 前面，复制 Claude Code 每次回复后发出的 rate_limits 快照。本地 transcript 的 token 计数用来校准消耗速度，突增后约 30 s 内反映出来。

Forecast预测

Each window (session 5h, week 7d, per-model weeks) gets used %, an even-pace marker, projected % at reset, time to limit and the sustainable rate. factor = sustainable ÷ current; the menu-bar Day Ring follows the tightest window: speed up at 1.25 or more, ease off below 1.每个窗口（5 小时 session、7 天、分模型周额度）都给出已用比例、匀速标记、重置时的预计比例、到达上限的时间和可持续速率。factor = 可持续速率 ÷ 当前速率；菜单栏的 Day Ring 跟随最紧的窗口：1.25 以上提示加速，低于 1 提示放慢。

Dashboard面板

⌘D shows the burn rate now, over 1 h, 5 h, 24 h and the window average against the sustainable rate. History is local JSONL. No analytics, no update pings, and Pace never calls an Anthropic endpoint itself.⌘D 打开面板：当前、1 小时、5 小时、24 小时和窗口平均的消耗速度，与可持续速率对比。历史存为本地 JSONL。没有统计、没有更新检查，Pace 自己不调用任何 Anthropic 接口。

In progress开发中Local-first voice diary · iOS · 1.0 not yet submittedlocal-first 声音日记 · iOS · 1.0 尚未提交

DaylumeRecord and transcribe on your phone. Browse by day or route, with recordings stored as files you own.在手机上录音、转写，按日期或路线回看，录音以属于你的文件保存。

Transcription转写

On-device端侧

Export导出

Always free永久免费

Languages语言

EN · 中文

Details详情

Problem问题

Voice notes are hard to search, and most apps store them on their servers.语音备忘难以检索，大多数 app 将录音存放在服务器上。

Approach做法

On-device transcription, portable audio files and always-free export. Written product principles guide feature decisions.端侧转写、可自由迁移的音频文件、永久免费导出。以成文的产品原则指导功能取舍。

Built交付

SwiftUI with Widgets, App Intents, Live Activities and a Share Extension; on-device Speech and Foundation Models; English and Chinese, light and dark themes.SwiftUI，配合 Widgets、App Intents、Live Activities 和 Share Extension；端侧 Speech 与 Foundation Models；中英双语、明暗主题。

Status状态

Preparing for 1.0; not yet submitted to the App Store. Privacy and support pages live.准备发布 1.0，尚未提交 App Store。隐私和支持页已上线。

Experiments and prototypes.实验与原型。

Games built on LIQUID and SILK physics. Each one tests a single mechanic before I commit to a release.基于 LIQUID 和 SILK 物理系统的游戏，每款只验证一个玩法机制，跑通之后再投入正式发布。

• STAR SWOOPIn progress开发中 A beat-locked shooter for the AI Passport card: three ships, eight abilities, three sectors with a boss each.AI Passport 卡片上的节拍同步射击游戏：三艘飞船、八种能力、三个 Sector，各有一个 Boss。

  Enemy waves and fire patterns are scheduled on the music’s beat grid. Hit tests use Q8 fixed-point squared distance. In QEMU, over 150 frames per scene, the worst frame is 21.3 ms and audio uses 3–5% CPU. A position sweep checks every boss: standing still wins 0 of 60 runs.敌人波次和弹幕按音乐的节拍网格调度。命中判定用 Q8 定点的距离平方。QEMU 每个场景 150 帧，最慢一帧 21.3 ms，音频占 3–5% CPU。每个 Boss 都做站位扫描测试：原地不动 60 局全部失败。

  

• Pocket Toolkit口袋工具箱In progress开发中 One firmware app for the card with 27 tools: 17 offline, 6 Bluetooth, 4 Wi-Fi.卡片上的一个 firmware app，27 个工具：17 个离线、6 个蓝牙、4 个 Wi-Fi。

  All tools share one renderer, font set, audio path and storage layer. Voice reminders record up to 30 s at 8 kHz µ-law into 8 slots kept in flash. The app is 2,540,176 B against a 4 MiB budget. A QEMU pass over 175 frames across the 27 pages reports zero missing glyphs, overflows or fallbacks.所有工具共用一套渲染器、字库、音频通路和存储层。语音提醒以 8 kHz µ-law 录音，最长 30 s，存进 flash 里的 8 个槽位。App 大小 2,540,176 B，预算 4 MiB。QEMU 检查 27 个页面共 175 帧：缺字、溢出、回退均为 0。

  

• WORDSIn progress开发中 A vocabulary game for the card: 16 constellations, 1,492 words.卡片上的单词游戏：16 个星座、1,492 个单词。

  Offline pronunciation, spaced review and a stardust shop.离线发音、间隔复习和星尘商店。

• PocketChoirIn progress开发中 Record each vocal part with the front camera; the app combines them into a choir video that follows the score.用前置摄像头逐个录下声部，app 按乐谱合成一段合唱视频。

  Pitch detection, face tracking, synthesis and mixing run on-device.音高检测、面部追踪、合成和混音都在手机上完成。

• NeoCloudSim · Pixel CloudIn progress开发中 A Godot 4 data-centre management game, plus a pixel idle game with all art drawn in code.Godot 4 数据中心经营游戏，外加一款美术全部由代码绘制的像素放置游戏。

  In the management game you rent GPUs, host models, and fund research and alignment. The idle game is portrait, on a 256×240 canvas.经营游戏里要租 GPU、托管模型、资助研究和对齐。放置游戏是竖屏的，画布 256×240。

• DeskFlowIn progress开发中 A macOS menu-bar controller for the IKEA IDÅSEN desk over Bluetooth LE, with a CLI and an MCP server.通过蓝牙 LE 控制 IKEA IDÅSEN 升降桌的 macOS 菜单栏 app，带 CLI 和 MCP server。

  SwiftUI, AppKit and CoreBluetooth. 27 MCP tools over stdio and a Unix-socket CLI let agents read and move the desk; a move requested by Claude waits for my confirmation. Sit and stand presets, and 90 days of usage statistics. On the desk: a 78.42 → 80.42 → 78.42 cm round trip that stops at each target.SwiftUI、AppKit 和 CoreBluetooth。通过 stdio 上的 27 个 MCP tools 和 Unix socket CLI，agent 可以读取并移动桌子；Claude 发起的移动要等我确认。支持坐姿、站姿预设和 90 天使用统计。实桌测试：78.42 → 80.42 → 78.42 cm 往返，每次都停在目标高度。

• E-paper voice notes墨水屏语音便签Exploration探索 Custom firmware and a macOS client for an ESP32-S3 e-paper terminal (800×480).ESP32-S3 墨水屏终端（800×480）的自定义 firmware 和 macOS 客户端。

  Serial protocol, button controls and partial refresh. A FastAPI service transcribes speech and returns a 1-bit bitmap.支持串口协议、按键和局部刷新。FastAPI 服务转写语音并返回 1-bit 位图。

Multi-agent orchestration and governance.多 agent 编排与治理。

Agents drift from scope, report work they did not verify and touch files another agent is editing. Each rule I write closes one of these failures. Rules are layered (global, machine, repository) and shared by every tool; a rule enters the global layer only if an agent starting any project would go wrong without it.Agent 会偏离范围、汇报没验证过的结果、改动别的 agent 正在编辑的文件。我写的每条规则都针对其中一种失误。规则分全局、本机、仓库三层，所有工具共用；只有新开任何项目不读就会走弯路的规则，才进全局层。

1. Scope is the deliverable范围即交付物

   No silent narrowing, widening or substitution of a task; side findings go into the report as suggestions.不悄悄缩小、扩大或替换任务；顺手发现的问题写进汇报，作为建议。

2. Claims match evidence结论对得上证据

   Every claim in a report maps to a test, a commit or a tool result; anything unverified is labelled as such.汇报里的每条结论都对应一次测试、提交或工具输出；没验证的要明确标出来。

3. Irreversible actions stay with a human不可逆操作归人

   Merging, releasing, payments, live data and hardware all wait for my explicit approval.合并、发布、付费、改线上数据、操作硬件，都等我明确批准。

4. Layered context上下文分层

   Global rules, the machine's tool map and project rules load in that order; only rules every agent needs enter the global layer.全局规则、本机工具地图、项目规则依次加载；所有 agent 都用得上的规则才进全局层。

Claude Code, Codex and Cursor run in parallel terminal panes. A skills library covers repeatable work: covers, video and release checklists.Claude Code、Codex 和 Cursor 在终端复用器中并行运行。封面、视频、发布清单等重复工作归入 skills 库。