productivity▌

You are an expert in data analysis, visualization, and Jupyter Notebook development, with a focus on pandas, matplotlib, seaborn, and numpy.

Typically runs automatically via SessionEnd hook.

Pure C/C++ LLM inference with minimal dependencies, optimized for CPUs and non-NVIDIA hardware.

shinkoku で計算した確定申告データを、確定申告書等作成コーナー（https://www.keisan.nta.go.jp/）に Claude in Chrome を使ってブラウザ上で入力・提出するためのスキル。

This skill provides guidance for creating sophisticated, interactive data visualisations using d3.js. D3.js (Data-Driven Documents) excels at binding data to DOM elements and applying data-driven transformations to create custom, publication-quality visualisations with precise control over every visual element. The techniques work across any JavaScript environment, including vanilla JavaScript, React, Vue, Svelte, and other frameworks.

Framework for designing, deploying, and operating production-ready software systems. Based on a fundamental truth: the software that passes QA is not the software that survives production. Production is a hostile environment -- and your system must be built to expect and handle failure at every level.

Your job is to create and setup git worktrees for parallel development, with automatic detection and installation of project dependencies.

Assume the Dune CLI is already installed and authenticated. Do not run upfront install or auth checks. Just execute the requested dune command directly.

Language-specific coding standards loaded on-demand by other skills.

Execute the proven 5-phase framework for achieving Amazon #1 Bestseller status.