Inspect, drive, and verify a running Windows app UI with winapp ui (UI Automation): find elements, click, type, read text and values, wait for state, take screenshots. Works with WinUI, WPF, WinForms, Win32, and Electron. Use to check, test, or act on a live…
Prepare, present, and finish a contributor PR in microsoft/winappcli. Activate for "create a PR", "prepare this PR", "get this PR ready for review", or "take this PR through readiness". Keeps fixes in the existing PR, communicates evidence, and tracks…
Multi-dimensional review of a PR or feature branch in the microsoft/winappcli repo. Activate when a contributor asks to "review my PR", "review my changes", "vet my branch before pushing", "do a full review", "PR review", "review this feature", or similar.…
Investigate slow WinUI 3 layout, scrolling and virtualization using native ETW captures, timed operation trees and managed GC suspension context. Use bounded queries for runtime performance questions, not crash dumps or UI correctness.
Diagnose Windows app packaging, signing, install, identity, and SDK errors: untrusted or mismatched certificates, Add-AppxPackage and 0x80073CFx install failures, no package identity, C++/WinRT headers not generated. Use when an MSIX won't install or build,…
Add Windows SDK and Windows App SDK support to an existing project (winapp init), restore pinned SDKs after cloning (winapp restore), update SDKs, or create a new WinUI app (winapp new). Use for Electron, .NET, C++, Rust, Flutter, or Tauri projects that need…
Run, debug, and UI-automate a Windows app in a persistent Windows Sandbox rather than the user's desktop. Use for disposable app testing, guest diagnostics, file transfer, and app or whole-desktop evidence. Builds remain on the host; connection and reconnect…
Find the right WinUI 3 control and a real, compiling sample from the WinUI Gallery or Community Toolkit with winapp find-ui. Use when building WinUI UI and unsure which control fits (cards, tabs, swipe lists, inline messages) or when asked for a sample. Not…
Give a desktop app (WPF, WinForms, Electron, C++, Rust) package identity so identity-only Windows APIs work: push notifications, background tasks, share target, startup tasks. Use when adding such a feature, running or debugging with identity, or running…
Build an MSIX installer for a desktop, console, or CLI app (Electron, .NET, C++, Rust, Flutter, Tauri) from build output or a .csproj with winapp package, optionally signed. Use for an installer testers can sideload, app distribution, or MSIX in scripts or…
Look up real Windows, WinRT, and Windows App SDK APIs (types, members, enums) from a project's references or the installed SDKs with winapp find-api instead of guessing. Use before coding against an unverified API, or to fix unknown-member, CS0117, CS1061, or…
Framework-specific Windows steps for Electron, WPF, WinForms, C++, Rust, Flutter, and Tauri: build output, npm scripts, Cargo, CMake, and how winapp fits each. Use when adding Windows features such as toast notifications to one of these apps, or for setup,…
Create or edit Package.appxmanifest or appxmanifest.xml for any app type (GUI, console, service): execution aliases, file associations, protocols, capabilities, identity, app icons/tiles from one image. Use when changing what the manifest declares or…
Package and sign .NET MAUI Windows apps with winapp: publish the Windows head first, then point packaging at the resolved resizetizer manifest. Use for a MAUI MSIX or signed unpackaged build, MAUI packaging in CI, or 'manifest contains unresolved…
Sign an existing .msix or .exe and manage code-signing certificates: winapp sign, cert generate/install/info, Azure Trusted Signing. Use when signing with a .pfx, creating or trusting a dev certificate, verifying a signature, or fixing a publisher mismatch.…
Review WinUI 3 code or changes for quality: MVVM, x:Bind correctness, accessibility, theming, security, performance, and WinUI analyzer findings. Use when asked to review or audit a WinUI app or its pending changes, or before committing. Catches issues the…
Read before writing or changing WinUI 3 XAML: choosing controls, pages and navigation, layout, Fluent Design, theming, accessibility, x:Bind, real samples, and checking that APIs exist with winapp find-api. Not for WPF or WinForms UI, even if the app uses the…
Create, build, run, and fix build errors in WinUI 3 apps (C# or C++) with WinApp CLI 0.7+: winapp new, winapp run, Native AOT, crash diagnosis. Use for a new WinUI app or a WinUI project that fails to build or crashes. Not for WPF, WinForms, or Electron apps…
MSIX packaging, signing, and Microsoft Store publishing for WinUI 3 apps with WinApp CLI 0.7+: project packaging, Native AOT, certificates, self-contained deployment, CI/CD. Use when releasing or publishing a WinUI app. Not for WPF, WinForms, or Electron apps…
Write and run automated UI tests for Windows desktop apps (WinUI 3, WPF, WinForms, Win32) with the winapp ui harness: one batch script, assertions, input, file pickers, dialogs, screenshots, locally or in Windows Sandbox. Use when asked for UI tests or to…
Migrate or port a WPF app to WinUI 3: namespaces (System.Windows to Microsoft.UI.Xaml), control mapping (DataGrid, WrapPanel, TabControl), Dispatcher to DispatcherQueue, imaging, MVVM with CommunityToolkit.Mvvm, ThemeResource. Use when converting WPF code or…
Independent, multi-model review of a design or spec **before** any code is written, for the microsoft/winappcli repo. Activate when a contributor asks to "review this spec", "review my design", "review this design doc", "validate this approach", "should we…
Install and verify WinUI 3 prerequisites — .NET SDK 8.0.100+, WinApp CLI 0.7+, and Developer Mode; identify additional Native AOT and Windows Sandbox requirements. Use when the user asks to set up or repair the toolchain, or when another WinUI skill finds a…
Statically check changed C# against the same deterministic rules github-code-quality[bot] runs on pull requests, so a contributor can fix likely findings before opening the PR and keep the bot's inline comments to a minimum. Activate when a contributor asks…
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