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Core distributed systems patterns - load balancing, caching, sharding, consistent hashing, message queues, rate limiting, CDN, Bloom filters, ID generation, replication, conflict resolution, CAP theorem

Sketch types, signatures, and module structure before code, then stay in the loop while implementation fills in. Use for /architect, 'architect this', 'design this', or non-trivial work where jumping to code would lock in the wrong shape.

Spawn N parallel candidates at the same task, pick a base, graft the strongest parts of the losers into it. Use for /arena, 'arena this', 'throw it in the arena', or when one attempt at a non-trivial artifact would lock in the wrong shape.

Create or update the feature specification from a natural language feature description.

Generate an actionable, dependency-ordered tasks.md for the feature based on available design artifacts.

Use when building a custom UI (page, dashboard, buttons) that should wake a Grok Bot over a webhook, when the user must provide a webhook sender key, or when exposing that UI on Tailscale.

Use this skill whenever the user asks to create, improve, audit, or split prompts for AI video generators (Seedance, Kling, Veo, Runway, Luma, Pika, Sora, any image-to-video system).

Quick reference for RESTful API design patterns, HTTP semantics, caching, and rate limiting. Triggers on: rest api, http methods, status codes, api design, endpoint design, api versioning, rate limiting, caching headers.

Search code by AST structure using ast-grep. Find semantic patterns like function calls, imports, class definitions instead of text patterns. Triggers on: find all calls to X, search for pattern, refactor usages, find where function is used, structural search, ast-grep, sg.

Scoring framework for test-kitchen cookoff and omakase-off. Invoked at Phase 4 to evaluate implementations using 5-criteria scoring. Do not invoke directly - called by cookoff/omakase-off.

This skill should be used when performing maintenance or diagnostics on remote Linux systems. Triggers on "remote server", "Linux maintenance", "Ubuntu cleanup", "Debian", "disk space", "apt cleanup", "journal vacuum", "snap cleanup", "system diagnostics".

This skill should be used when implementing features with parallel exploration or competition. Triggers on "build", "create", "implement", "try both approaches", "compare implementations". Routes to omakase-off (entry gate for design exploration) or cookoff (exit gate for parallel implementation).

Send and receive WhatsApp messages via the unofficial linked-device client pywhats (pip install pywhats) — pair with QR, send text/images, group chat, read receipts, presence/typing, and a long-running JSON event stream

B站评论分析工具。输入B站视频链接或BV号即可获取一级评论数据，支持分页浏览、评论情感分析（积极/负面/需求/竞品），生成精美 HTML 报告。当用户需要查看B站视频评论、分析评论舆情、了解用户反馈时使用。触发词：B站评论、B站视频评论、评论查询、评论分析、评论舆情、看评论、bilibili评论。

抖音相似账号推荐工具，输入抖音账号名称或账号ID，通过红狐API接口获取本账号数据、内容数据和相似账号推荐数据，深度分析共通点、差异点和优化建议。当用户提到"推荐抖音相似账号"、"找抖音对标"、"抖音同类账号"、"抖音竞品分析"、"找抖音同行"时使用。

X(Twitter)作品评论分析工具。输入推文链接或推文ID即可获取一级评论数据，支持游标翻页，并进行四维情感分析（积极/负面/需求/竞品）。当用户需要查看X(Twitter)推文评论、分析推文舆情、了解用户反馈时使用。触发词：X评论、Twitter评论、推文评论、X作品评论分析、评论查询、评论分析、评论舆情、看评论、twitter评论、X推文。

拆解爆款标题逻辑，结合用户输入一键生成10个优质爆款标题，告别标题纠结；同时对已有标题从主题匹配度、结构合规度、利益清晰度、情绪唤醒度、稀缺性感知和合规安全性六大维度加权评分，输出等级评定与优化建议；当用户需要生成小红书爆款标题、评估标题爆款潜力、了解标题与爆款规律匹配度或获取标题优化建议时使用

YouTube视频评论分析工具。输入视频链接即可获取评论数据，支持翻页续查与四维情感分析（积极/负面/需求/竞品），快速掌握任意视频下的用户反馈全貌。当用户需要查看YouTube视频评论、分析视频舆情、了解用户反馈时使用。触发词：YouTube评论、油管评论、视频评论、评论查询、评论分析、评论舆情、看评论、youtube评论、YT评论。

Scans an existing codebase and generates project-specific skills that capture inferred conventions such as naming, file organization, framework usage, data access, error handling, and testing style.

Align on the shape of a change through an interview, then implement it. Escalates open product decisions and settles the implementation shape in conversation

Load code-style and task-specific skills, make the change described by the current context, then run post-implementation QA.

Execute an approved split plan, shipping each change group separately as its own branch and PR or as sequential commits on the current branch

Get option chain data from Interactive Brokers for equities, ETFs, and futures (FOP), including calls and puts with strikes, bids, asks, volume, implied volatility, and model Greeks

法人成り（個人事業主から法人への移行）に関する相談。税額比較シミュレーション、 法人形態の選択、設立手続き、役員報酬戦略、社会保険の比較を支援する。 Trigger: "法人成り", "会社設立", "法人化", "株式会社にしたい", "合同会社", "法人税と所得税の比較", "役員報酬", "法人成りのタイミング", "マイクロ法人", "1人法人"

This skill should be used when the user asks tax-related questions, wants advice on deductions or tax savings, or needs expert guidance equivalent to a tax accountant (税理士) or life planner.

Material passports and circular construction: generate per-element material inventories from BOQ/BIM, mark reuse potential and recycled content, and prepare deconstruction data. Use for circular-economy and EU Taxonomy-aligned projects.