Total 41,414 skills
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Ingest and transform large data files (CSV/JSON) into Elasticsearch indices. Stream-based processing for files up to 30GB, cross-version migration (ES 8.x ↔ 9.x), custom JavaScript transformations, and reindexing with transforms. Use when you need to load data into Elasticsearch, migrate indices, or transform data during ingestion.
This skill generates a comprehensive set of Frequently Asked Questions (FAQs) from the course description, course content, learning graphs, concept lists, MicroSims, and glossary terms to help students understand common questions and prepare content for chatbot integration. Use this skill after course description, learning graph, glossary, and at least 30% of chapter content exist.
Create Scratch project with TypeScript using Hikkaku; use when the user asks how to build or structure a Scratch project in this repo.
Guide for performing linear cryptanalysis attacks on FEAL and similar Feistel ciphers. This skill should be used when tasks involve breaking FEAL encryption, recovering cipher keys using known plaintext-ciphertext pairs, or implementing linear cryptanalysis techniques. Applies to cryptographic challenges mentioning "linear attack," "FEAL," "Feistel cipher analysis," or key recovery from plaintext-ciphertext pairs.
Platform-specific optimization for TikTok, Instagram Reels, and YouTube sponsored content. Includes 2025 algorithm updates, optimal lengths, and platform-native best practices. Auto-activates when discussing TikTok scripts, Reels content, YouTube sponsorships, platform optimization, or cross-platform repurposing. Use when writing platform-specific content or adapting scripts across platforms.
Research MQL5 documentation (Japanese and English only) for MQL5 creation/editing issues, compile errors, or API questions. Use when users ask to look up docs, interpret MQL5 errors, or confirm correct language usage. Sources limited to https://www.mql5.com/ja/docs and https://www.mql5.com/en/docs.
Guide for debugging crashes related to custom memory heaps, particularly use-after-free issues caused by static destruction ordering, DEBUG vs RELEASE discrepancies, and custom allocator lifecycle problems. This skill should be used when investigating crashes that occur only in RELEASE builds, memory-related crashes involving custom allocators, static initialization/destruction order issues, or use-after-free bugs in C++ applications.
Provides brand typography selection and hierarchy development frameworks including the Brand-First Typography Selection Process, Modular Scale System, Font Classification Matrix, Serif vs. Sans-Serif Decision Framework, Typeface Evaluation Criteria, Font Pairing Principles, WCAG accessibility requirements, and typography design tokens. Auto-activates during brand typography development, font selection, type hierarchy creation, and typography system work. Use when discussing brand typography, font selection, font pairing, type hierarchy, modular scale, typography accessibility, WCAG typography, or typography guidelines.
R programming for data analysis, visualization, and statistical workflows. Use when working with R scripts (.R), Quarto documents (.qmd), RMarkdown (.Rmd), or R projects. Covers tidyverse workflows, ggplot2 visualizations, statistical analysis, epidemiological methods, and reproducible research practices.
Comprehensive LaTeX reference for document creation, formatting, mathematics, tables, figures, bibliographies, and compilation. Use when helping users write, edit, debug, or compile LaTeX documents.
LaTeX booktabs/tabularx/multirow/longtable packages for professional tables. Use when helping users create well-formatted tables, multi-page tables, or improve table appearance.
Synthesizes research findings into design decisions via codebase investigation. Use when (1) translating research into implementation approaches, (2) selecting between design alternatives, (3) executing after /research or deep-research, or (4) preparing input for /plan phase.