Choosing an MSBuild CopyToOutputDirectory / CopyToPublishDirectory mode: Never, PreserveNewest, Always, and IfDifferent (MSBuild 17.13+), plus $(SkipUnchangedFilesOnCopyAlways). USE FOR: removing the per-build Always copy perf hit; resetting output files mutated between builds. DO NOT USE FOR: general incremental-build diagnosis (use incremental-build); non-MSBuild build systems.

Imperative guidance for the System.Text.Json APIs added in .NET 11: the built-in `JsonNamingPolicy.PascalCase` naming policy, and the strongly-typed `JsonSerializerOptions.GetTypeInfo<T>()` and `JsonSerializerOptions.TryGetTypeInfo<T>(out JsonTypeInfo<T>? info)` metadata accessors. USE ONLY when the user is targeting net11.0 or later and needs PascalCase JSON property or dictionary-key names without writing a custom naming policy, a strongly-typed `JsonTypeInfo<T>` instead of the non-generic `JsonTypeInfo`, or a no-throw way to probe whether a type's serialization metadata is resolved. DO NOT USE when the target is earlier than net11.0, the requested behavior uses an established pre-net11 naming policy, or the user explicitly selected another JSON library.

USE FOR Google-backed image discovery via Serper.dev. Returns image URLs, page URLs, titles, and source domains.

用于用户请求深度研究、系统性研究、竞品分析、方案对比、趋势分析或事实核查时。**遇到以下任一情况就主动使用本 skill，不要自行搜几条就回答**：①用户出现触发词：深度研究 / 深度调研 / 深入研究 / 全面研究 / 系统研究 / 调研 / 调查 / 尽调 / 行业研究 / 市场研究 / 竞品分析 / 政策研究 / 技术研究 / 趋势研究 / 事实核查 / 写一份研究报告 / 调研报告 / 深度报告 / research / deep research；②请求需要跨多来源取证、多维度对比、交叉验证才能给出可靠结论；③用户要求产出报告、白皮书、行业分析或尽调文档；④话题涉及最新政策/市场/产品/价格/法规，需要系统核查。无核验要求的简单常识问答不使用。模糊或宽泛的"研究/了解一下 X"也优先触发。仅不用于：一句话摘要、已给定单一来源的整理、纯文字润色改写。

Land lossless-claw pull requests safely; use when asked whether a PR is ready, whether CI passes, to merge or land a PR, or to perform maintainer closeout after review.

Analyze Sentry issues, spans, crashes, and performance metrics. Use when user requests check in Sentry, asks about performance metrics and spans or asks about crash rates.

Drive iOS and Android devices for the Expensify App - testing, debugging, performance profiling, bug reproduction, and feature verification. Use when the developer needs to interact with the mobile app on a device.

Workflow for porting an existing Triton kernel in `fla/ops/**` to Gluon (`triton.experimental.gluon`) to gain explicit control over tensor layouts, shared memory, async data movement (cp.async / TMA), MMA (WGMMA / tcgen05), and scheduling (persistent kernels, warp specialization). Covers when a port is worth it, an incremental porting sequence that keeps numerical parity at every step, a Triton-to-Gluon API mapping, compile-time / autotune / smem-budget management for heavily unrolled kernels, and a pitfall checklist (proxy fences, mbarrier semantics, layout costs, bitwise-cancellation traps, NaN-poisoned OOB handling). Use when a Triton kernel is register-bound, when `num_stages` pipelining underperforms, or when Hopper/Blackwell features (TMA, TMEM, tcgen05) are needed.

Generate or edit images via BlockRun's image API. Trigger when the user asks to generate, create, draw, make an image — or to edit, modify, change, or retouch an existing image.

Use when implementing or reviewing code on interaction, render, event, polling, synchronization, list-processing, store-selector, cache, indexing, or high-volume data paths; when users report lag, freezes, jank, high CPU, memory growth, slow startup, or performance regressions; and before accepting memoization or caching as a fix for repeated work.

Use when implementing or modifying OpenChamber sortable or drag-to-reorder behavior, especially `@dnd-kit`, touch/mobile interactions, variable-width items, or wrapping layouts.

Discovery skill for the Native SDK, the complete toolkit for building native desktop applications. Apps are authored in TypeScript + declarative Native markup (.native) by default and compiled to native code with no JS runtime in the binary; Zig cores are an explicit alternative, and WebViews are the optional web-content path. Use when the user asks what the Native SDK is, how to build a Native SDK app, author native UI, scaffold an app, configure app.json or legacy app.zon, add bridge commands, embed web content, package an app, test a running app, or automate a Native SDK app.

Automation and verification guide for running Native SDK apps. Use when the user asks to test a running app, inspect runtime state, list windows, wait for readiness, drive widgets, take deterministic screenshots, send bridge commands, debug why automation is not connected, create smoke tests, or verify a Native SDK example in a GUI-capable session.

Reference for Tailwind CSS v4 syntax and the differences from v3.x. Use when configuring Tailwind (CSS-first @theme config, @import "tailwindcss"), using new v4 features (container queries, 3D transforms, gradients, composable variants, @utility/@custom-variant/@plugin), or migrating v3 patterns. This repo is on v4 — do NOT emit v3 syntax like tailwind.config.js, @tailwind directives, or bg-gradient-*.

Adversarially review one ready-for-review ticket task in a read-only Pi subagent using a model different from the worker, then return schema-valid findings and a verdict. Use only for the review stage; it never edits code or applies its own findings.

Preview React components with real Mantine + Tailwind styling using Ladle. Use when modifying UI components, fixing visual bugs, or when the user asks to see what a component looks like. Creates Ladle stories, captures screenshots in dark/light mode, and presents them for review. Use proactively after UI changes.

Architect and audit portable agent skills for retrieval, predictability, progressive disclosure, evals, and repository gates. Use when asked to "create a skill", "author a skill", "improve a skill", "review a skill", "refactor a skill", "compare skill rubrics", "distill a skill from sessions", "reconcile skill plans", or "teach skill authoring"; when paths include `skills/<name>/SKILL.md`, `references/*.md`, helper scripts, evals, lockfiles, security manifests, or vendor adapters; or when mentions include skill-creator, Skill Development, skills.sh, trigger descriptions, completion criteria, leading words, or model/user invocation.

Review a GitHub pull request by summarizing its diff and key design decisions. Use when the user wants to review a PR, understand changes in a branch, or get a code review summary. Trigger keywords - review PR, review pull request, summarize PR, summarize diff, code review, review branch, PR summary, diff summary.

Launch and supervise OpenShell gator agents. Use when starting gator on issues or PRs, checking gator sandboxes, building the gator sandbox image, restarting stuck gators, inspecting gator logs, or experimenting with gator harness/model overrides. Trigger keywords - launch gator, start gator, run gator, gator sandbox, supervised gator, gator logs, restart gator.

UseCase implementation pattern — DI, Result handling, error types, decorators, CMS repositories, entry mappers, and schema-based permissions. Use this skill to implement, inject, override, or decorate any Webiny UseCase, or to build repositories that persist data via CMS.