I build systems.
Useful, interesting, or efficient —
ideally all three.

An edge assistive system for blind and low-vision users. TongXing runs NPU perception, GPU AgentCore, and CPU offline speech on one phone, keeping obstacle warning local while a tool-using voice agent closes touch-first app tasks through MCP tools and Android accessibility actions.

A Waybar widget that surfaces remaining quota and reset time for Claude Code, Codex CLI, GitHub Copilot, and OpenCode Zen. Uses browser cookies for Claude and Codex; no API keys required.

As an upstream contributor to Animeko, an open-source anime streaming app, I work on cloud download, platform support, and smaller UI/data-flow pieces across the app.

1. +3,054 / -41
   PikPak cloud offline-download Merged RFC #2976 ↗ PR #2978 ↗

   Merged upstream. Adds a cloud-backed alternative to local BitTorrent, with HTTPS stream handoff, transparent fallback, credential handling, and a reusable Kotlin Multiplatform SDK extracted from the work.

2. WIP
   HLS manifest filtering Active RFC #3039 ↗

   RFC for filtering short ad-like segment groups before HLS playback reaches the platform player, using a playback-scoped localhost proxy while keeping ExoPlayer, VLC, AVKit, and mediamp boundaries unchanged.

3. WIP
   WOA64 build support Active mediamp PR #32 ↗ anitorrent PR #3 ↗ workspace ↗

   Workaround track for running Animeko on Windows on Arm64 today: upstreaming the mediamp FFmpeg runtime piece while keeping a known-good workspace that can produce portable zip builds.

4. Danmaku timing refactor Planned

   Planned refactor of the danmaku pipeline to address timing drift and offset handling, so comments stay aligned with playback across seeks, buffering, and source changes.

5. Character detail wiring Planned

   Planned smaller upstream UI/data-flow work around connecting character detail pages into the app.

Small, targeted upstream contributions and bug reports outside my own repositories, collected separately from my long-running project work.

1. +496 / -140
   pikpakcli time-range download Merged PR #64 ↗

   Merged upstream. Adds a `--time-range` option for downloading a clipped segment from a single remote video through ffmpeg stream copy, with tests for parsing, output names, media URL selection, and missing-ffmpeg errors.

2. llama.cpp CJK tool-call issue Closed Issue #19391 ↗

   Diagnosed a llama.cpp CJK tool-call history pollution bug around `ensure_ascii=true` argument serialization, in the parser/tool-call subsystem later reshaped by the autoparser refactor.

• renpak Rust · MPL-2.0
  github.com/NihilDigit/renpak ↗

  AVIF compression for Ren'Py visual novel archives — typically 4–5× smaller on image data, without forking the engine. Hooks Ren'Py's standard file_open_callback, so the game decodes AVIF transparently at runtime. Tested on Eternum (Caribdis): 11.3 → 7.2 GiB on disk, 4.73× on the image bytes themselves.

• FocusWell Kotlin / TypeScript
  github.com/NihilDigit/focuswell ↗

  Android-first time accounting app for uneven energy and focus. It turns daytime focus into a storable leisure reserve, so high-energy days can support low-energy days without streak pressure or progress anxiety.

• pikpak-kotlin Kotlin · MIT
  github.com/NihilDigit/pikpak-kotlin ↗

  A Kotlin Multiplatform SDK for PikPak cloud storage. Handles session persistence, captcha auth, rate limiting, and resumable uploads. Extracted from the Animeko PikPak work.

• coding-agents-setup PowerShell / Shell
  github.com/NihilDigit/coding-agents-setup ↗

  A modern local toolchain setup for coding agents, packaged as Windows and Linux setup scripts. It can install and configure development tools, shell helpers, skills layout, and Codex/Claude rule files generated from shared fragments.

• 2026 Under review

  ANVIL: Accelerator-Native Video Interpolation via Codec Motion Vector Priors

  Shibo Liu

  IEEE TCSVT

• 2026 Under review

  RAFNet: A Relation-Aware Adaptive Fusion Network for Dense Classroom Student Behavior Recognition

  Yongying Xia*, Elankovan A. Sundararajan, Shibo Liu, Lei Xiao

  The Visual Computer