Merge remote-tracking branch 'origin/main' into dev/snickler/net10-upgrade

2025-08-22 01:58:04 +00:00 · 2025-08-18 21:42:25 -04:00 · 2025-08-18 21:42:25 -04:00 · 477663c383
commit 477663c383
parent f2c567a93b 8737de29af
180 changed files with 1068 additions and 637 deletions
--- a/.github/actions/spell-check/expect.txt
+++ b/.github/actions/spell-check/expect.txt
@ -115,6 +115,7 @@ bigbar
 bigobj
 binlog
 binres
+binskim
 BITMAPFILEHEADER
 bitmapimage
 BITMAPINFO
@ -255,6 +256,7 @@ Corpor
 cotaskmem
 COULDNOT
 countof
+covrun
 cpcontrols
 cph
 cplusplus
@ -969,6 +971,7 @@ msc
 mscorlib
 msctls
 msdata
+msdia
 MSDL
 MSGFLT
 MSHCTX
--- a/.github/workflows/msstore-submissions.yml
+++ b/.github/workflows/msstore-submissions.yml
@ -17,7 +17,7 @@ jobs:
    steps:
      - name: BODGY - Set up Gnome Keyring for future Cert Auth
        run: |-
-          sudo apt-get install -y gnome-keyring
+          sudo apt-get update && sudo apt-get install -y gnome-keyring
          export $(dbus-launch --sh-syntax)
          export $(echo 'anypass_just_to_unlock' | gnome-keyring-daemon --unlock)
          export $(echo 'anypass_just_to_unlock' | gnome-keyring-daemon --start --components=gpg,pkcs11,secrets,ssh)
--- a/.pipelines/v2/release.yml
+++ b/.pipelines/v2/release.yml
@ -64,6 +64,10 @@ extends:
      tsa:
        enabled: true
        configFile: '$(Build.SourcesDirectory)\.pipelines\tsa.json'
+      binskim:
+        enabled: true
+        # Exclude every dll/exe in tests/*, as well as all msdia*, covrun* and vcruntime*
+        analyzeTargetGlob: +:file|$(Build.ArtifactStagingDirectory)/**/*.dll;+:file|$(Build.ArtifactStagingDirectory)/**/*.exe;-:file:regex|tests.*\.(dll|exe)$;-:file:regex|(covrun.*)\.dll$;-:file:regex|(msdia.*)\.dll$;-:file:regex|(vcruntime.*)\.dll$

    stages:
      - stage: Build
--- a/README.md
+++ b/README.md
@ -14,7 +14,7 @@ Microsoft PowerToys is a set of utilities for power users to tune and streamline
 | [Color Picker](https://aka.ms/PowerToysOverview_ColorPicker) | [Command Not Found](https://aka.ms/PowerToysOverview_CmdNotFound) | [Command Palette](https://aka.ms/PowerToysOverview_CmdPal) |
 | [Crop And Lock](https://aka.ms/PowerToysOverview_CropAndLock) | [Environment Variables](https://aka.ms/PowerToysOverview_EnvironmentVariables) | [FancyZones](https://aka.ms/PowerToysOverview_FancyZones) |
 | [File Explorer Add-ons](https://aka.ms/PowerToysOverview_FileExplorerAddOns) | [File Locksmith](https://aka.ms/PowerToysOverview_FileLocksmith) | [Hosts File Editor](https://aka.ms/PowerToysOverview_HostsFileEditor) |
-| [Image Resizer](https://aka.ms/PowerToysOverview_ImageResizer) | [Keyboard Manager](https://aka.ms/PowerToysOverview_KeyboardManager) | [Mouse utilities](https://aka.ms/PowerToysOverview_MouseUtilities) |
+| [Image Resizer](https://aka.ms/PowerToysOverview_ImageResizer) | [Keyboard Manager](https://aka.ms/PowerToysOverview_KeyboardManager) | [Mouse Utilities](https://aka.ms/PowerToysOverview_MouseUtilities) |
 | [Mouse Without Borders](https://aka.ms/PowerToysOverview_MouseWithoutBorders) | [New+](https://aka.ms/PowerToysOverview_NewPlus) | [Paste as Plain Text](https://aka.ms/PowerToysOverview_PastePlain) |
 | [Peek](https://aka.ms/PowerToysOverview_Peek) | [PowerRename](https://aka.ms/PowerToysOverview_PowerRename) | [PowerToys Run](https://aka.ms/PowerToysOverview_PowerToysRun) |
 | [Quick Accent](https://aka.ms/PowerToysOverview_QuickAccent) | [Registry Preview](https://aka.ms/PowerToysOverview_RegistryPreview) | [Screen Ruler](https://aka.ms/PowerToysOverview_ScreenRuler) |
@ -35,19 +35,19 @@ Microsoft PowerToys is a set of utilities for power users to tune and streamline
 Go to the [Microsoft PowerToys GitHub releases page][github-release-link] and click on `Assets` at the bottom to show the files available in the release. Please use the appropriate PowerToys installer that matches your machine's architecture and install scope. For most, it is `x64` and per-user.

 <!-- items that need to be updated release to release -->
-[github-next-release-work]: https://github.com/microsoft/PowerToys/issues?q=is%3Aissue+milestone%3A%22PowerToys+0.93%22
-[github-current-release-work]: https://github.com/microsoft/PowerToys/issues?q=is%3Aissue+milestone%3A%22PowerToys+0.92%22
-[ptUserX64]: https://github.com/microsoft/PowerToys/releases/download/v0.92.1/PowerToysUserSetup-0.92.1-x64.exe 
-[ptUserArm64]: https://github.com/microsoft/PowerToys/releases/download/v0.92.1/PowerToysUserSetup-0.92.1-arm64.exe 
-[ptMachineX64]: https://github.com/microsoft/PowerToys/releases/download/v0.92.1/PowerToysSetup-0.92.1-x64.exe 
-[ptMachineArm64]: https://github.com/microsoft/PowerToys/releases/download/v0.92.1/PowerToysSetup-0.92.1-arm64.exe
+[github-next-release-work]: https://github.com/microsoft/PowerToys/issues?q=is%3Aissue+milestone%3A%22PowerToys+0.94%22
+[github-current-release-work]: https://github.com/microsoft/PowerToys/issues?q=is%3Aissue+milestone%3A%22PowerToys+0.93%22
+[ptUserX64]: https://github.com/microsoft/PowerToys/releases/download/v0.93.0/PowerToysUserSetup-0.93.0-x64.exe 
+[ptUserArm64]: https://github.com/microsoft/PowerToys/releases/download/v0.93.0/PowerToysUserSetup-0.93.0-arm64.exe 
+[ptMachineX64]: https://github.com/microsoft/PowerToys/releases/download/v0.93.0/PowerToysSetup-0.93.0-x64.exe 
+[ptMachineArm64]: https://github.com/microsoft/PowerToys/releases/download/v0.93.0/PowerToysSetup-0.93.0-arm64.exe
 
 |  Description   | Filename |
 |----------------|----------|
-| Per user - x64       | [PowerToysUserSetup-0.92.1-x64.exe][ptUserX64] |
-| Per user - ARM64     | [PowerToysUserSetup-0.92.1-arm64.exe][ptUserArm64] |
-| Machine wide - x64   | [PowerToysSetup-0.92.1-x64.exe][ptMachineX64] |
-| Machine wide - ARM64 | [PowerToysSetup-0.92.1-arm64.exe][ptMachineArm64] |
+| Per user - x64       | [PowerToysUserSetup-0.93.0-x64.exe][ptUserX64] |
+| Per user - ARM64     | [PowerToysUserSetup-0.93.0-arm64.exe][ptUserArm64] |
+| Machine wide - x64   | [PowerToysSetup-0.93.0-x64.exe][ptMachineX64] |
+| Machine wide - ARM64 | [PowerToysSetup-0.93.0-arm64.exe][ptMachineArm64] |

 This is our preferred method.

@ -93,139 +93,119 @@ For guidance on developing for PowerToys, please read the [developer docs](./doc

 Our [prioritized roadmap][roadmap] of features and utilities that the core team is focusing on.

-### 0.92 - June 2025 Update
+### 0.93 - Aug 2025 Update

 In this release, we focused on new features, stability, optimization improvements, and automation.

 **✨Highlights**

- - PowerToys settings now has a toggle for the system tray icon, giving users control over its visibility based on personal preference. Thanks [@BLM16](https://github.com/BLM16)!  
- - Command Palette now has Ahead-of-Time ([AOT](https://learn.microsoft.com/en-us/dotnet/core/deploying/native-aot)) compatibility for all first-party extensions, improved extensibility, and core UX fixes, resulting in better performance and stability across commands.
- - Color Picker now has customizable mouse button actions, enabling more personalized workflows by assigning functions to left, right, and middle clicks. Thanks [@PesBandi](https://github.com/PesBandi)!
- - Bug Report Tool now has a faster and clearer reporting process, with progress indicators, improved compression, auto-cleanup of old trace logs, and inclusion of MSIX installer logs for more efficient diagnostics.
- - File Explorer add-ons now have improved rendering stability, resolving issues with PDF previews, blank thumbnails, and text file crashes during file browsing.
-
-### Color Picker
-
- - Added mouse button actions so you can choose what left, right, or middle click does. Thanks [@PesBandi](https://github.com/PesBandi)!  
-
-### Crop & Lock
-
- - Aligned window styling with current Windows theme for a cleaner look. Thanks [@sadirano](https://github.com/sadirano)!  
+ - PowerToys settings debuts a modern, card-based dashboard with clearer descriptions and faster navigation for a streamlined user experience.
+ - Command Palette had over 99 issues resolved, including bringing back Clipboard History, adding context menu shortcuts, pinning favorite apps, and supporting history in Run.
+ - Command Palette reduced its startup memory usage by ~15%, load time by ~40%, built-in extensions loading time by ~70%, and installation size by ~55%—all due to using the full Ahead-of-Time (AOT) compilation mode in Windows App SDK.
+ - Peek now supports instant previews and embedded thumbnails for Binary G-code (.bgcode) 3D printing files, making it easy to inspect models at a glance. Thanks [@pedrolamas](https://github.com/pedrolamas)!
+ - Mouse Utilities introduces a new spotlight highlighting mode that dims the screen and draws attention to your cursor, perfect for presentations.
+ - Test coverage improvements for multiple PowerToys modules including Command Palette, Advanced Paste, Peek, Text Extractor, and PowerRename — ensuring better reliability and quality, with over 600 new unit tests (mostly for Command Palette) and doubled UI automation coverage.

 ### Command Palette

- - Enhanced performance by resolving a regression in page loading.
- - Applied consistent hotkey handling across all Command Palette commands for a smoother user experience.
- - Improved graceful closing of Command Palette. Thanks [@davidegiacometti](https://github.com/davidegiacometti)!
- - Fixed consistency issue for extensions' alias with "Direct" setting and enabled localization for "Direct" and "Indirect" for better user understanding. Thanks [@davidegiacometti](https://github.com/davidegiacometti)!
- - Improved visual clarity by styling critical context items correctly.
- - Automatically focused the field when only one is present on the content page.
- - Improved stability and efficiency when loading file icons in SDK ThumbnailHelper.cs by removing unnecessary operations. Thanks [@OldUser101](https://github.com/OldUser101)!
- - Enhanced details view with commands implementation. (See [Extension sample](./src/modules/cmdpal/ext/SamplePagesExtension/Pages/SampleListPageWithDetails.cs))
+ - Ensured screen readers are notified when the selected item in the list changes for better accessibility.
+ - Fixed command title changes not being properly notified to screen readers. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Made icon controls excluded from keyboard navigation by default for better accessibility. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Improved UI design with better text sizing and alignment.
+ - Fixed keyboard shortcuts to work better in text boxes and context menus.
+ - Added right-click context menus with critical command styling and separators.
+ - Improved various context menu issues, improving item selection, handling of long titles, search bar text scaling, initial item behavior, and primary button functionality.
+ - Fixed context menu crashes with better type handling.
+ - Fixed "Reload" command to work with both uppercase and lowercase letters.
+ - Added mouse back button support for easier navigation. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Fixed Alt+Left Arrow navigation not working when search box contains text. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Updated back button tooltip to show keyboard shortcut information. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Fixed Command Palette window not appearing properly when activated. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Fixed Command Palette window staying hidden from taskbar after File Explorer restarts. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Fixed window focus not returning to previous app properly.
+ - Fixed Command Palette window to always appear on top when shown and move to bottom when hidden. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Fixed window hiding to properly work on UI thread. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Fixed crashes and improved stability with better synchronization of Command list updates. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Improved extension disposal with better error handling to prevent crashes. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Improved stability by fixing a UI threading issue when loading more results, preventing possible crashes and ensuring the loading state resets if loading fails. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Enhanced icon loading stability with better exception handling. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Added thread safety to recent commands to prevent crashes. Thanks [@MaoShengelia](https://github.com/MaoShengelia)!
+ - Fixed acrylic (frosted glass) system backdrop display issues by ensuring proper UI thread handling. Thanks [@jiripolasek](https://github.com/jiripolasek)!

 ### Command Palette extensions

- - Added "Copy Path" command to *App* search results for convenience. Thanks [@PesBandi](https://github.com/PesBandi)!
- - Improved *Calculator* input experience by ignoring leading equal signs. Thanks [@PesBandi](https://github.com/PesBandi)!
- - Corrected input handling in the *Calculator* extension to avoid showing errors for input with only leading whitespace.
- - Improved *New Extension* wizard by validating names to prevent namespace errors.
- - Ensured consistent context items display for the *Run* extension between fallback and top-level results.
- - Fixed missing *Time & Date* commands in fallback results. Thanks [@htcfreek](https://github.com/htcfreek)!
- - Fixed outdated results in the *Time & Date* extension. Thanks [@htcfreek](https://github.com/htcfreek)!
- - Fixed an issue where *Web Search* always opened Microsoft Edge instead of the user's default browser on Windows 11 24H2 and later. Thanks [@RuggMatt](https://github.com/RuggMatt)!
- - Improved ordering of *Windows Settings* extension search results from alphabetical to relevance-based for quicker access.
- - Added "Restart Windows Explorer" command to the *Windows System Commands* provider for gracefully terminate and relaunch explorer.exe. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Added settings to each provider to control which fallback commands are enabled. Thanks [@jiripolasek](https://github.com/jiripolasek)! for fixing a regression in this feature.
+ - Added sample code showing how Command Palette extensions can track when their pages are loaded or unloaded. [Check it out here](./src/modules/cmdpal/ext/SamplePagesExtension/OnLoadPage.cs).
+ - Fixed *Calculator* to accept regular spaces in numbers that use space separators. Thanks [@PesBandi](https://github.com/PesBandi)!
+ - Added a new setting to *Calculator* to make "Copy" the primary button (replacing “Save”) and enable "Close on Enter", streamlining the workflow. Thanks [@PesBandi](https://github.com/PesBandi)!
+ - Improved *Apps* indexing error handling and removed obsolete code. Thanks [@davidegiacometti](https://github.com/davidegiacometti)!
+ - Prevented apps from showing in search when the *Apps* extension is disabled. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Added ability to pin/unpin *Apps* using Ctrl+P shortcut.
+ - Added keyboard shortcuts to the *Apps* context menu items for faster access. 
+ - Added all file context menu options to the *Apps* items context menu, making all file actions available there for better functionality.
+ - Streamlined All *Apps* extension settings by removing redundant descriptions, making the UI clearer.
+ - Added command history to the *Run* page for easier access to previous commands.
+ - Fixed directory path handling in *Run* fallback for better file navigation.
+ - Fixed URL fallback item hiding properly in *Web Search* extension when search query becomes invalid. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Added proper empty state message for *Web Search* extension when no results found. Thanks [@jiripolasek](https://github.com/jiripolasek)!
+ - Added fallback command to *Windows Settings* extension for better search results.
+ - Re-enabled *Clipboard History* feature with proper window handling.
+ - Improved *Add Bookmark* extension to automatically detect file, folder, or URL types without manual input.
+ - Updated terminology from "Kill process" to "End task" in *Window Walker* for consistency with Windows.
+ - Fixed minor grammar error in SamplePagesExtension code comments. Thanks [@purofle](https://github.com/purofle)!

-### Command Palette Ahead-of-Time (AOT) readiness
+### Mouse Utilities

- - We’ve made foundational changes to prepare the Command Palette for future Ahead-of-Time (AOT) publishing. This includes replacing the calculator library with ExprTk, improving COM object handling, refining Win32 interop, and correcting trimming behavior—all to ensure compatibility, performance, and reliability under AOT constraints. All first-party extensions are now AOT-compatible. These improvements lay the groundwork for publishing Command Palette as an AOT application in the next release.
- - Special thanks to [@Sergio0694](https://github.com/Sergio0694) for guidance on making COM APIs AOT-compatible, [@jtschuster](https://github.com/jtschuster) for fixing COM object handling, [@ArashPartow](https://github.com/ArashPartow) from ExprTk for integration suggestions, and [@tian-lt](https://github.com/tian-lt) from the Windows Calculator team for valuable suggestion throughout the migration journey and review.
- - As part of the upcoming release, we’re also enabling AOT compatibility for key dependencies, including markdown rendering, Adaptive Cards, internal logging and telemetry library, and the core Command Palette UX.
-
-### FancyZones
-
- - Fixed DPI-scaling issues to ensure FancyZones Editor displays crisply on high-resolution monitors. Thanks [@HO-COOH](https://github.com/HO-COOH)! This inspired us a broader review across other PowerToys modules, leading to DPI display optimizations in Awake, Color Picker, PowerAccent, and more.
-
-### File Explorer add-ons
-
- - Fixed potential failures in PDF previewer and thumbnail generation, improving reliability when browsing PDF files. Thanks [@mohiuddin-khan-shiam](https://github.com/mohiuddin-khan-shiam)!  
- - Prevented Monaco Preview Handler crash when opening UTF-8-BOM text files.  
-
-### Hosts File Editor
-
- - Added an in-app *“Learn more”* link to warning dialogs for quick guidance. Thanks [@PesBandi](https://github.com/PesBandi)!  
-
-### Mouse Without Borders
-
- - Fixed firewall rule so MWB now accepts connections from IPs outside your local subnet.
- - Cleaned legacy logs to reduce disk usage and noise.  
+ - Added a new spotlight highlighting mode that creates a large transparent circle around your cursor with a backdrop effect, providing an alternative to the traditional circle highlight. Perfect for presentations where you want to focus attention on a specific area while dimming the rest of the screen.

 ### Peek

- - Updated QOI reader so 3-channel QOI images preview correctly in Peek and File Explorer. Thanks [@mbartlett21](https://github.com/mbartlett21)!  
- - Added codec detection with a clear warning when a video can’t be previewed, along with a link to the Microsoft Store to download the required codec.
+ - Added preview and thumbnail support for Binary G-code (.bgcode) files used in 3D printing. You can now see embedded thumbnails and preview these compressed 3D printing files directly in Peek and File Explorer. Thanks [@pedrolamas](https://github.com/pedrolamas)!

-### PowerRename
+### Quick Accent

- - Added support for $YY-$MM-$DD in ModificationTime and AccessTime to enable flexible date-based renaming.
-
-### PowerToys Run
-
- - Suppressed error UI for known WPF-related crashes to reduce user confusion, while retaining diagnostic logging for analysis. This targets COMException 0xD0000701 and 0x80263001 caused by temporary DWM unavailability.
-
-### Registry Preview
-
- - Added "Extended data preview" via magnifier icon and context menu in the Data Grid, enabled easier inspection of complex registry types like REG_BINARY, REG_EXPAND_SZ, and REG_MULTI_SZ, etc. Thanks [@htcfreek](https://github.com/htcfreek)! 
- - Improved file-saving experience in Registry Preview by aligning with Notepad-like behavior, enhancing user prompts, error handling, and preventing crashes during unsaved or interrupted actions. Thanks [@htcfreek](https://github.com/htcfreek)!  
+ - Added Vietnamese language support to Quick Accent, mappings for Vietnamese vowels (a, e, i, o, u, y) and the letter d. Thanks [@octastylos-pseudodipteros](https://github.com/octastylos-pseudodipteros)!

 ### Settings

- - Added an option to hide or show the PowerToys system tray icon. Thanks [@BLM16](https://github.com/BLM16)!
- - Improved settings to show progress while a bug report package is being generated.
-
-### Workspaces
-
- - Stored Workspaces icons in user AppData to ensure profile portability and prevent loss during temporary folder cleanup.
- - Enabled capture and launch of PWAs on non-default Edge or Chrome profiles, ensuring consistent behavior during creation and execution.
+ - Completely redesigned the Settings dashboard with a modern card-based layout featuring organized sections for quick actions and shortcuts overview, replacing the old module list.
+ - Rewrote setting descriptions to be more concise and follow Windows writing style guidelines, making them easier to understand.
+ - Improved formatting and readability of release notes in the "What's New" section with better typography and spacing.
+ - Added missing deep link support for various settings pages (Peek, Quick Accent, PowerToys Run, etc.) so you can jump directly to specific settings.
+ - Resolved an issue where the settings page header would drift away from its position when resizing the settings window.
+ - Resolved a settings crash related to incompatible property names in ZoomIt configuration.

 ### Documentation

- - Added SpeedTest and Dictionary Definition to the third-party plugins documentation for PowerToys Run. Thanks [@ruslanlap](https://github.com/ruslanlap)!
- - Corrected sample links and typo in Command Palette documentation. Thanks [@daverayment](https://github.com/daverayment) and [@roycewilliams](https://github.com/roycewilliams)!
+ - Added detailed step-by-step instructions for first-time developers building the Command Palette module, including prerequisites and Visual Studio setup guidance. Thanks [@chatasweetie](https://github.com/chatasweetie)!
+ - **Fixed Broken SDK Link**: Corrected a broken markdown link in the Command Palette SDK README that was pointing to an incorrect directory path. Thanks [@ChrisGuzak](https://github.com/ChrisGuzak)!
+ - Added documentation for the "Open With Cursor" plugin that enables opening Visual Studio and VS Code recent files using Cursor AI. Thanks [@VictorNoxx](https://github.com/VictorNoxx)!
+ - Added documentation for two new community plugins - Hotkeys plugin for creating custom keyboard shortcuts, and RandomGen plugin for generating random data like passwords, colors, and placeholder text. Thanks [@ruslanlap](https://github.com/ruslanlap)!

 ### Development

- - Updated .NET libraries to 9.0.6 for performance and security. Thanks [@snickler](https://github.com/snickler)!  
- - Updated WinAppSDK to 1.7.2 for better stability and Windows support.  
- - Introduced a one-step local build script that generates a signed installer, enhancing developer productivity.
- - Generated portable PDBs so cross-platform debuggers can read symbol files, improving debugging experience in VSCode and other tools.
- - Simplified WinGet configuration files by using the [Microsoft.Windows.Settings](https://www.powershellgallery.com/packages/Microsoft.Windows.Settings) module to enable Developer Mode. Thanks [@mdanish-kh](https://github.com/mdanish-kh)! 
- - Adjusted build scripts for the latest Az.Accounts module to keep CI green.
- - Streamlined release pipeline by removing hard-coded telemetry version numbers, and unified Command Palette versioning with Windows Terminal's versioning method for consistent updates.
- - Enhanced the build validation step to show detailed differences between NOTICE.md and actual package dependencies and versions.
- - Improved spell-checking accuracy across the repo. Thanks [@rovercoder](https://github.com/rovercoder)!  
- - Upgraded CI to TouchdownBuild v5 for faster pipelines.  
- - Added context comments to *Resources.resw* to help translators.
- - Expanded fuzz testing coverage to include FancyZones.
- - Integrated all unit tests into the CI pipeline, increasing from ~3,000 to ~5,000 tests.
- - Enabled daily UI test automation on the main branch, now covering over 370 UI tests for end-to-end validation.
- - Newly added unit tests for WorkspacesLib to improve reliability and maintainability.
+ - Updated .NET libraries to 9.0.8 for performance and security. Thanks [@snickler](https://github.com/snickler)!
+ - Updated the spell check system to version 0.0.25 with better GitHub integration and SARIF reporting, plus fixed numerous spelling errors throughout the codebase including property names and documentation. Thanks [@jsoref](https://github.com/jsoref)!
+ - Cleaned up spelling check configuration to eliminate false positives and excessive noise that was appearing in every pull request, making the development process smoother.
+ - Replaced NuGet feed with Azure Artifacts for better package management.
+ - Implemented configurable UI test pipeline that can use pre-built official releases instead of building everything from scratch, reducing test execution time from 2+ hours.
+ - Replaced brittle pixel-by-pixel image comparison with perceptual hash (pHash) technology that's more robust to minor rendering differences - no more test failures due to anti-aliasing or compression artifacts.
+ - Reduced CI/fuzzing/UI test timeouts from 4 hours to 90 minutes, dramatically improving developer feedback loops and preventing long waits when builds get stuck.
+ - Standardized test project naming across the entire codebase and improved pipeline result identification by adding platform/install mode context to test run titles. Thanks [@khmyznikov](https://github.com/khmyznikov)!
+ - Added comprehensive UI test suites for multiple PowerToys modules including Command Palette, Advanced Paste, Peek, Text Extractor, and PowerRename - ensuring better reliability and quality.
+ - Enhanced UI test automation with command-line argument support, better session management, and improved element location methods using pattern matching to avoid failures from minor differences in exact matches.

-### General
+### What is being planned over the next few releases

- Updated bug report compression library (cziplib 0.3.3) for faster and more reliable package creation. Thanks [@Chubercik](https://github.com/Chubercik)!
- Included App Installer (“AppX Deployment Server”) event logs in bug reports for more thorough diagnostics.  
-
-### What is being planned for version 0.93
-
-For [v0.93][github-next-release-work], we'll work on the items below:
+For [v0.94][github-next-release-work], we'll work on the items below:

 - Continued Command Palette polish
- - New UI automation tests
- - Working on installer upgrades
+ - Working on Shortcut Guide v2 (Thanks [@noraa-junker](https://github.com/noraa-junker)!)
+ - Working on upgrading the installer to WiX 5
 - Working on shortcut conflict detection
+ - Working on setting search
 - Upgrading Keyboard Manager's editor UI
+ - New UI automation tests
 - Stability, bug fixes

 ## PowerToys Community
--- a/installer/PowerToysSetup/Resources.wxs
+++ b/installer/PowerToysSetup/Resources.wxs
@ -11,7 +11,7 @@
  <Fragment>
    <!-- Resource directories should be added only if the installer is built on the build farm -->
    <?ifdef env.IsPipeline?>
-      <?foreach ParentDirectory in INSTALLFOLDER;HistoryPluginFolder;CalculatorPluginFolder;FolderPluginFolder;ProgramPluginFolder;ShellPluginFolder;IndexerPluginFolder;UnitConverterPluginFolder;ValueGeneratorPluginFolder;UriPluginFolder;WindowWalkerPluginFolder;OneNotePluginFolder;RegistryPluginFolder;VSCodeWorkspacesPluginFolder;ServicePluginFolder;SystemPluginFolder;TimeDatePluginFolder;WindowsSettingsPluginFolder;WindowsTerminalPluginFolder;WebSearchPluginFolder;PowerToysPluginFolder?>
+      <?foreach ParentDirectory in INSTALLFOLDER;WinUI3AppsInstallFolder;HistoryPluginFolder;CalculatorPluginFolder;FolderPluginFolder;ProgramPluginFolder;ShellPluginFolder;IndexerPluginFolder;UnitConverterPluginFolder;ValueGeneratorPluginFolder;UriPluginFolder;WindowWalkerPluginFolder;OneNotePluginFolder;RegistryPluginFolder;VSCodeWorkspacesPluginFolder;ServicePluginFolder;SystemPluginFolder;TimeDatePluginFolder;WindowsSettingsPluginFolder;WindowsTerminalPluginFolder;WebSearchPluginFolder;PowerToysPluginFolder?>
        <DirectoryRef Id="$(var.ParentDirectory)">
          <!-- Resource file directories -->
          <?foreach Language in $(var.LocLanguageList)?>
@ -181,7 +181,7 @@
      </Component>
      <Component
          Id="ImageResizer_$(var.IdSafeLanguage)_Component"
-          Directory="Resource$(var.IdSafeLanguage)INSTALLFOLDER"
+          Directory="Resource$(var.IdSafeLanguage)WinUI3AppsInstallFolder"
          Guid="$(var.CompGUIDPrefix)02">
        <RegistryKey Root="$(var.RegistryScope)" Key="Software\Classes\powertoys\components">
          <RegistryValue Type="string" Name="ImageResizer_$(var.IdSafeLanguage)_Component" Value="" KeyPath="yes"/>
@ -553,6 +553,7 @@
          <RemoveFolder Id="RemoveFolderResourcesResource$(var.IdSafeLanguage)HistoryPluginFolder" Directory="Resource$(var.IdSafeLanguage)HistoryPluginFolder" On="uninstall"/>
          <RemoveFolder Id="RemoveFolderResourcesResource$(var.IdSafeLanguage)PowerToysPluginFolder" Directory="Resource$(var.IdSafeLanguage)PowerToysPluginFolder" On="uninstall"/>
          <RemoveFolder Id="RemoveFolderResourcesResource$(var.IdSafeLanguage)ValueGeneratorPluginFolder" Directory="Resource$(var.IdSafeLanguage)ValueGeneratorPluginFolder" On="uninstall"/>
+          <RemoveFolder Id="RemoveFolderResourcesResource$(var.IdSafeLanguage)WinUI3AppsInstallFolder" Directory="Resource$(var.IdSafeLanguage)WinUI3AppsInstallFolder" On="uninstall"/>
      <?undef IdSafeLanguage?>
        <?endforeach?>
      </Component>
--- a/src/modules/cmdpal/Microsoft.CmdPal.Common/Helpers/DiagnosticsHelper.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Common/Helpers/DiagnosticsHelper.cs
@ -0,0 +1,66 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace Microsoft.CmdPal.Common.Helpers;
+
+/// <summary>
+/// Provides utility methods for building diagnostic and error messages.
+/// </summary>
+public static class DiagnosticsHelper
+{
+    /// <summary>
+    /// Builds a comprehensive exception message with timestamp and detailed diagnostic information.
+    /// </summary>
+    /// <param name="exception">The exception that occurred.</param>
+    /// <param name="extensionHint">A hint about which extension caused the exception to help with debugging.</param>
+    /// <returns>A string containing the exception details, timestamp, and source information for diagnostic purposes.</returns>
+    public static string BuildExceptionMessage(Exception exception, string? extensionHint)
+    {
+        var locationHint = string.IsNullOrWhiteSpace(extensionHint) ? "application" : $"'{extensionHint}' extension";
+
+        // let's try to get a message from the exception or inferred it from the HRESULT
+        // to show at least something
+        var message = exception.Message;
+        if (string.IsNullOrWhiteSpace(message))
+        {
+            var temp = Marshal.GetExceptionForHR(exception.HResult)?.Message;
+            if (!string.IsNullOrWhiteSpace(temp))
+            {
+                message = temp + $" (inferred from HRESULT 0x{exception.HResult:X8})";
+            }
+        }
+
+        if (string.IsNullOrWhiteSpace(message))
+        {
+            message = "[No message available]";
+        }
+
+        // note: keep date time kind and format consistent with the log
+        return $"""
+                ============================================================
+                😢 An unexpected error occurred in the {locationHint}.
+
+                Summary:
+                  Message:    {message}
+                  Type:       {exception.GetType().FullName}
+                  Source:     {exception.Source ?? "N/A"}
+                  Time:       {DateTimeOffset.Now:yyyy-MM-dd HH:mm:ss.fffffff}
+                  HRESULT:    0x{exception.HResult:X8} ({exception.HResult})
+
+                Stack Trace:
+                {exception.StackTrace ?? "[No stack trace available]"}
+
+                ------------------ Full Exception Details ------------------
+                {exception}
+
+                ℹ️ If you need further assistance, please include this information in your support request.
+                ℹ️ Before sending, take a quick look to make sure it doesn't contain any personal or sensitive information.
+                ============================================================
+
+                """;
+    }
+}
--- a/src/modules/cmdpal/Microsoft.CmdPal.Common/Helpers/ExtensionHostInstance.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Common/Helpers/ExtensionHostInstance.cs
@ -24,7 +24,7 @@ public partial class ExtensionHostInstance
    /// <param name="message">The log message to send</param>
    public void LogMessage(ILogMessage message)
    {
-        if (Host != null)
+        if (Host is not null)
        {
            _ = Task.Run(async () =>
            {
@ -47,7 +47,7 @@ public partial class ExtensionHostInstance

    public void ShowStatus(IStatusMessage message, StatusContext context)
    {
-        if (Host != null)
+        if (Host is not null)
        {
            _ = Task.Run(async () =>
            {
@ -64,7 +64,7 @@ public partial class ExtensionHostInstance

    public void HideStatus(IStatusMessage message)
    {
-        if (Host != null)
+        if (Host is not null)
        {
            _ = Task.Run(async () =>
            {
--- a/src/modules/cmdpal/Microsoft.CmdPal.Common/Helpers/SupersedingAsyncGate.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Common/Helpers/SupersedingAsyncGate.cs
@ -89,7 +89,7 @@ public class SupersedingAsyncGate : IDisposable
                }
                catch (OperationCanceledException)
                {
-                    CompleteIfCurrent(currentTcs, currentCallId, tcs => tcs.SetCanceled(currentCts.Token));
+                    CompleteIfCurrent(currentTcs, currentCallId, tcs => tcs.TrySetCanceled(currentCts.Token));
                }
                catch (Exception ex)
                {
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/AppExtensionHost.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/AppExtensionHost.cs
@ -36,7 +36,7 @@ public abstract partial class AppExtensionHost : IExtensionHost

    public IAsyncAction HideStatus(IStatusMessage? message)
    {
-        if (message == null)
+        if (message is null)
        {
            return Task.CompletedTask.AsAsyncAction();
        }
@ -55,7 +55,7 @@ public abstract partial class AppExtensionHost : IExtensionHost

    public IAsyncAction LogMessage(ILogMessage? message)
    {
-        if (message == null)
+        if (message is null)
        {
            return Task.CompletedTask.AsAsyncAction();
        }
@ -80,7 +80,7 @@ public abstract partial class AppExtensionHost : IExtensionHost
                try
                {
                    var vm = StatusMessages.Where(messageVM => messageVM.Model.Unsafe == message).FirstOrDefault();
-                    if (vm != null)
+                    if (vm is not null)
                    {
                        StatusMessages.Remove(vm);
                    }
@ -113,7 +113,7 @@ public abstract partial class AppExtensionHost : IExtensionHost
    {
        // If this message is already in the list of messages, just bring it to the top
        var oldVm = StatusMessages.Where(messageVM => messageVM.Model.Unsafe == message).FirstOrDefault();
-        if (oldVm != null)
+        if (oldVm is not null)
        {
            Task.Factory.StartNew(
                () =>
@ -142,7 +142,7 @@ public abstract partial class AppExtensionHost : IExtensionHost

    public IAsyncAction ShowStatus(IStatusMessage? message, StatusContext context)
    {
-        if (message == null)
+        if (message is null)
        {
            return Task.CompletedTask.AsAsyncAction();
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/CommandBarViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/CommandBarViewModel.cs
@ -2,7 +2,6 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.

-using System.Collections.ObjectModel;
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Messaging;
 using Microsoft.CmdPal.Core.ViewModels.Messages;
@ -35,13 +34,13 @@ public partial class CommandBarViewModel : ObservableObject,
    [NotifyPropertyChangedFor(nameof(HasPrimaryCommand))]
    public partial CommandItemViewModel? PrimaryCommand { get; set; }

-    public bool HasPrimaryCommand => PrimaryCommand != null && PrimaryCommand.ShouldBeVisible;
+    public bool HasPrimaryCommand => PrimaryCommand is not null && PrimaryCommand.ShouldBeVisible;

    [ObservableProperty]
    [NotifyPropertyChangedFor(nameof(HasSecondaryCommand))]
    public partial CommandItemViewModel? SecondaryCommand { get; set; }

-    public bool HasSecondaryCommand => SecondaryCommand != null;
+    public bool HasSecondaryCommand => SecondaryCommand is not null;

    [ObservableProperty]
    public partial bool ShouldShowContextMenu { get; set; } = false;
@ -58,14 +57,14 @@ public partial class CommandBarViewModel : ObservableObject,

    private void SetSelectedItem(ICommandBarContext? value)
    {
-        if (value != null)
+        if (value is not null)
        {
            PrimaryCommand = value.PrimaryCommand;
            value.PropertyChanged += SelectedItemPropertyChanged;
        }
        else
        {
-            if (SelectedItem != null)
+            if (SelectedItem is not null)
            {
                SelectedItem.PropertyChanged -= SelectedItemPropertyChanged;
            }
@ -88,7 +87,7 @@ public partial class CommandBarViewModel : ObservableObject,

    private void UpdateContextItems()
    {
-        if (SelectedItem == null)
+        if (SelectedItem is null)
        {
            SecondaryCommand = null;
            ShouldShowContextMenu = false;
@ -127,13 +126,13 @@ public partial class CommandBarViewModel : ObservableObject,
    public ContextKeybindingResult CheckKeybinding(bool ctrl, bool alt, bool shift, bool win, VirtualKey key)
    {
        var keybindings = SelectedItem?.Keybindings();
-        if (keybindings != null)
+        if (keybindings is not null)
        {
            // Does the pressed key match any of the keybindings?
            var pressedKeyChord = KeyChordHelpers.FromModifiers(ctrl, alt, shift, win, key, 0);
            if (keybindings.TryGetValue(pressedKeyChord, out var matchedItem))
            {
-                return matchedItem != null ? PerformCommand(matchedItem) : ContextKeybindingResult.Unhandled;
+                return matchedItem is not null ? PerformCommand(matchedItem) : ContextKeybindingResult.Unhandled;
            }
        }

@ -142,7 +141,7 @@ public partial class CommandBarViewModel : ObservableObject,

    private ContextKeybindingResult PerformCommand(CommandItemViewModel? command)
    {
-        if (command == null)
+        if (command is null)
        {
            return ContextKeybindingResult.Unhandled;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/CommandContextItemViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/CommandContextItemViewModel.cs
@ -20,7 +20,7 @@ public partial class CommandContextItemViewModel(ICommandContextItem contextItem

    public KeyChord? RequestedShortcut { get; private set; }

-    public bool HasRequestedShortcut => RequestedShortcut != null && (RequestedShortcut.Value != nullKeyChord);
+    public bool HasRequestedShortcut => RequestedShortcut is not null && (RequestedShortcut.Value != nullKeyChord);

    public override void InitializeProperties()
    {
@ -32,7 +32,7 @@ public partial class CommandContextItemViewModel(ICommandContextItem contextItem
        base.InitializeProperties();

        var contextItem = Model.Unsafe;
-        if (contextItem == null)
+        if (contextItem is null)
        {
            return; // throw?
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/CommandItemViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/CommandItemViewModel.cs
@ -68,7 +68,7 @@ public partial class CommandItemViewModel : ExtensionObjectViewModel, ICommandBa
    {
        get
        {
-            List<IContextItemViewModel> l = _defaultCommandContextItem == null ?
+            List<IContextItemViewModel> l = _defaultCommandContextItem is null ?
                new() :
                [_defaultCommandContextItem];

@ -100,7 +100,7 @@ public partial class CommandItemViewModel : ExtensionObjectViewModel, ICommandBa
        }

        var model = _commandItemModel.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }
@ -128,7 +128,7 @@ public partial class CommandItemViewModel : ExtensionObjectViewModel, ICommandBa
        }

        var model = _commandItemModel.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }
@ -136,7 +136,7 @@ public partial class CommandItemViewModel : ExtensionObjectViewModel, ICommandBa
        Command.InitializeProperties();

        var listIcon = model.Icon;
-        if (listIcon != null)
+        if (listIcon is not null)
        {
            _listItemIcon = new(listIcon);
            _listItemIcon.InitializeProperties();
@ -172,13 +172,13 @@ public partial class CommandItemViewModel : ExtensionObjectViewModel, ICommandBa
        }

        var model = _commandItemModel.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }

        var more = model.MoreCommands;
-        if (more != null)
+        if (more is not null)
        {
            MoreCommands = more
                .Select(item =>
@ -300,7 +300,7 @@ public partial class CommandItemViewModel : ExtensionObjectViewModel, ICommandBa
    protected virtual void FetchProperty(string propertyName)
    {
        var model = this._commandItemModel.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
@ -308,7 +308,7 @@ public partial class CommandItemViewModel : ExtensionObjectViewModel, ICommandBa
        switch (propertyName)
        {
            case nameof(Command):
-                if (Command != null)
+                if (Command is not null)
                {
                    Command.PropertyChanged -= Command_PropertyChanged;
                }
@ -339,7 +339,7 @@ public partial class CommandItemViewModel : ExtensionObjectViewModel, ICommandBa

            case nameof(model.MoreCommands):
                var more = model.MoreCommands;
-                if (more != null)
+                if (more is not null)
                {
                    var newContextMenu = more
                        .Select(item =>
@ -394,7 +394,7 @@ public partial class CommandItemViewModel : ExtensionObjectViewModel, ICommandBa
                // Extensions based on Command Palette SDK < 0.3 CommandItem class won't notify when Title changes because Command
                // or Command.Name change. This is a workaround to ensure that the Title is always up-to-date for extensions with old SDK.
                var model = _commandItemModel.Unsafe;
-                if (model != null)
+                if (model is not null)
                {
                    _itemTitle = model.Title;
                }
@ -430,7 +430,7 @@ public partial class CommandItemViewModel : ExtensionObjectViewModel, ICommandBa
        Command.SafeCleanup();

        var model = _commandItemModel.Unsafe;
-        if (model != null)
+        if (model is not null)
        {
            model.PropChanged -= Model_PropChanged;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/CommandViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/CommandViewModel.cs
@ -44,7 +44,7 @@ public partial class CommandViewModel : ExtensionObjectViewModel
        }

        var model = Model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }
@ -67,13 +67,13 @@ public partial class CommandViewModel : ExtensionObjectViewModel
        }

        var model = Model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }

        var ico = model.Icon;
-        if (ico != null)
+        if (ico is not null)
        {
            Icon = new(ico);
            Icon.InitializeProperties();
@ -98,7 +98,7 @@ public partial class CommandViewModel : ExtensionObjectViewModel
    protected void FetchProperty(string propertyName)
    {
        var model = Model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
@ -125,7 +125,7 @@ public partial class CommandViewModel : ExtensionObjectViewModel
        Icon = new(null); // necessary?

        var model = Model.Unsafe;
-        if (model != null)
+        if (model is not null)
        {
            model.PropChanged -= Model_PropChanged;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ConfirmResultViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ConfirmResultViewModel.cs
@ -25,7 +25,7 @@ public partial class ConfirmResultViewModel(IConfirmationArgs _args, WeakReferen
    public override void InitializeProperties()
    {
        var model = Model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ContentPageViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ContentPageViewModel.cs
@ -28,7 +28,7 @@ public abstract partial class ContentPageViewModel : PageViewModel, ICommandBarC
    public DetailsViewModel? Details { get; private set; }

    [MemberNotNullWhen(true, nameof(Details))]
-    public bool HasDetails => Details != null;
+    public bool HasDetails => Details is not null;

    /////// ICommandBarContext ///////
    public IEnumerable<IContextItemViewModel> MoreCommands => Commands.Skip(1);
@ -67,7 +67,7 @@ public abstract partial class ContentPageViewModel : PageViewModel, ICommandBarC
            foreach (var item in newItems)
            {
                var viewModel = ViewModelFromContent(item, PageContext);
-                if (viewModel != null)
+                if (viewModel is not null)
                {
                    viewModel.InitializeProperties();
                    newContent.Add(viewModel);
@ -104,7 +104,7 @@ public abstract partial class ContentPageViewModel : PageViewModel, ICommandBarC
        base.InitializeProperties();

        var model = _model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
@ -133,7 +133,7 @@ public abstract partial class ContentPageViewModel : PageViewModel, ICommandBarC
            });

        var extensionDetails = model.Details;
-        if (extensionDetails != null)
+        if (extensionDetails is not null)
        {
            Details = new(extensionDetails, PageContext);
            Details.InitializeProperties();
@ -156,7 +156,7 @@ public abstract partial class ContentPageViewModel : PageViewModel, ICommandBarC
        base.FetchProperty(propertyName);

        var model = this._model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
@ -166,7 +166,7 @@ public abstract partial class ContentPageViewModel : PageViewModel, ICommandBarC
            case nameof(Commands):

                var more = model.Commands;
-                if (more != null)
+                if (more is not null)
                {
                    var newContextMenu = more
                            .ToList()
@ -216,7 +216,7 @@ public abstract partial class ContentPageViewModel : PageViewModel, ICommandBarC
                break;
            case nameof(Details):
                var extensionDetails = model.Details;
-                Details = extensionDetails != null ? new(extensionDetails, PageContext) : null;
+                Details = extensionDetails is not null ? new(extensionDetails, PageContext) : null;
                UpdateDetails();
                break;
        }
@ -248,7 +248,7 @@ public abstract partial class ContentPageViewModel : PageViewModel, ICommandBarC
    [RelayCommand]
    private void InvokePrimaryCommand(ContentPageViewModel page)
    {
-        if (PrimaryCommand != null)
+        if (PrimaryCommand is not null)
        {
            WeakReferenceMessenger.Default.Send<PerformCommandMessage>(new(PrimaryCommand.Command.Model, PrimaryCommand.Model));
        }
@ -258,7 +258,7 @@ public abstract partial class ContentPageViewModel : PageViewModel, ICommandBarC
    [RelayCommand]
    private void InvokeSecondaryCommand(ContentPageViewModel page)
    {
-        if (SecondaryCommand != null)
+        if (SecondaryCommand is not null)
        {
            WeakReferenceMessenger.Default.Send<PerformCommandMessage>(new(SecondaryCommand.Command.Model, SecondaryCommand.Model));
        }
@ -285,7 +285,7 @@ public abstract partial class ContentPageViewModel : PageViewModel, ICommandBarC
        Content.Clear();

        var model = _model.Unsafe;
-        if (model != null)
+        if (model is not null)
        {
            model.ItemsChanged -= Model_ItemsChanged;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ContextMenuViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ContextMenuViewModel.cs
@ -8,7 +8,6 @@ using CommunityToolkit.Mvvm.Messaging;
 using Microsoft.CmdPal.Core.ViewModels.Messages;
 using Microsoft.CommandPalette.Extensions;
 using Microsoft.CommandPalette.Extensions.Toolkit;
-using Microsoft.Diagnostics.Utilities;
 using Windows.System;

 namespace Microsoft.CmdPal.Core.ViewModels;
@ -51,7 +50,7 @@ public partial class ContextMenuViewModel : ObservableObject,

    public void UpdateContextItems()
    {
-        if (SelectedItem != null)
+        if (SelectedItem is not null)
        {
            if (SelectedItem.MoreCommands.Count() > 1)
            {
@ -68,14 +67,14 @@ public partial class ContextMenuViewModel : ObservableObject,
            return;
        }

-        if (SelectedItem == null)
+        if (SelectedItem is null)
        {
            return;
        }

        _lastSearchText = searchText;

-        if (CurrentContextMenu == null)
+        if (CurrentContextMenu is null)
        {
            ListHelpers.InPlaceUpdateList(FilteredItems, []);
            return;
@ -124,7 +123,7 @@ public partial class ContextMenuViewModel : ObservableObject,
    /// that have a shortcut key set.</returns>
    public Dictionary<KeyChord, CommandContextItemViewModel> Keybindings()
    {
-        if (CurrentContextMenu == null)
+        if (CurrentContextMenu is null)
        {
            return [];
        }
@ -140,7 +139,7 @@ public partial class ContextMenuViewModel : ObservableObject,
    public ContextKeybindingResult? CheckKeybinding(bool ctrl, bool alt, bool shift, bool win, VirtualKey key)
    {
        var keybindings = Keybindings();
-        if (keybindings != null)
+        if (keybindings is not null)
        {
            // Does the pressed key match any of the keybindings?
            var pressedKeyChord = KeyChordHelpers.FromModifiers(ctrl, alt, shift, win, key, 0);
@ -190,7 +189,7 @@ public partial class ContextMenuViewModel : ObservableObject,
        OnPropertyChanging(nameof(CurrentContextMenu));
        OnPropertyChanged(nameof(CurrentContextMenu));

-        if (CurrentContextMenu != null)
+        if (CurrentContextMenu is not null)
        {
            ListHelpers.InPlaceUpdateList(FilteredItems, [.. CurrentContextMenu!]);
        }
@ -198,7 +197,7 @@ public partial class ContextMenuViewModel : ObservableObject,

    public ContextKeybindingResult InvokeCommand(CommandItemViewModel? command)
    {
-        if (command == null)
+        if (command is null)
        {
            return ContextKeybindingResult.Unhandled;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/DetailsCommandsViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/DetailsCommandsViewModel.cs
@ -22,7 +22,7 @@ public partial class DetailsCommandsViewModel(
    {
        base.InitializeProperties();
        var model = _dataModel.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/DetailsElementViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/DetailsElementViewModel.cs
@ -16,7 +16,7 @@ public abstract partial class DetailsElementViewModel(IDetailsElement _detailsEl
    public override void InitializeProperties()
    {
        var model = _model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/DetailsLinkViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/DetailsLinkViewModel.cs
@ -18,7 +18,7 @@ public partial class DetailsLinkViewModel(

    public Uri? Link { get; private set; }

-    public bool IsLink => Link != null;
+    public bool IsLink => Link is not null;

    public bool IsText => !IsLink;

@ -26,14 +26,14 @@ public partial class DetailsLinkViewModel(
    {
        base.InitializeProperties();
        var model = _dataModel.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }

        Text = model.Text ?? string.Empty;
        Link = model.Link;
-        if (string.IsNullOrEmpty(Text) && Link != null)
+        if (string.IsNullOrEmpty(Text) && Link is not null)
        {
            Text = Link.ToString();
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/DetailsTagsViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/DetailsTagsViewModel.cs
@ -22,7 +22,7 @@ public partial class DetailsTagsViewModel(
    {
        base.InitializeProperties();
        var model = _dataModel.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/DetailsViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/DetailsViewModel.cs
@ -26,7 +26,7 @@ public partial class DetailsViewModel(IDetails _details, WeakReference<IPageCont
    public override void InitializeProperties()
    {
        var model = _detailsModel.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }
@ -41,7 +41,7 @@ public partial class DetailsViewModel(IDetails _details, WeakReference<IPageCont
        UpdateProperty(nameof(HeroImage));

        var meta = model.Metadata;
-        if (meta != null)
+        if (meta is not null)
        {
            foreach (var element in meta)
            {
@ -53,7 +53,7 @@ public partial class DetailsViewModel(IDetails _details, WeakReference<IPageCont
                    IDetailsTags => new DetailsTagsViewModel(element, this.PageContext),
                    _ => null,
                };
-                if (vm != null)
+                if (vm is not null)
                {
                    vm.InitializeProperties();
                    Metadata.Add(vm);
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/IconDataViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/IconDataViewModel.cs
@ -16,7 +16,7 @@ public partial class IconDataViewModel : ObservableObject, IIconData
    // If the extension previously gave us a Data, then died, the data will
    // throw if we actually try to read it, but the pointer itself won't be
    // null, so this is relatively safe.
-    public bool HasIcon => !string.IsNullOrEmpty(Icon) || Data.Unsafe != null;
+    public bool HasIcon => !string.IsNullOrEmpty(Icon) || Data.Unsafe is not null;

    // Locally cached properties from IIconData.
    public string Icon { get; private set; } = string.Empty;
@ -36,7 +36,7 @@ public partial class IconDataViewModel : ObservableObject, IIconData
    public void InitializeProperties()
    {
        var model = _model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/IconInfoViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/IconInfoViewModel.cs
@ -26,7 +26,7 @@ public partial class IconInfoViewModel : ObservableObject, IIconInfo

    public bool HasIcon(bool light) => IconForTheme(light).HasIcon;

-    public bool IsSet => _model.Unsafe != null;
+    public bool IsSet => _model.Unsafe is not null;

    IIconData? IIconInfo.Dark => Dark;

@ -43,7 +43,7 @@ public partial class IconInfoViewModel : ObservableObject, IIconInfo
    public void InitializeProperties()
    {
        var model = _model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ListItemViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ListItemViewModel.cs
@ -27,7 +27,7 @@ public partial class ListItemViewModel(IListItem model, WeakReference<IPageConte
    public DetailsViewModel? Details { get; private set; }

    [MemberNotNullWhen(true, nameof(Details))]
-    public bool HasDetails => Details != null;
+    public bool HasDetails => Details is not null;

    public override void InitializeProperties()
    {
@ -40,7 +40,7 @@ public partial class ListItemViewModel(IListItem model, WeakReference<IPageConte
        base.InitializeProperties();

        var li = Model.Unsafe;
-        if (li == null)
+        if (li is null)
        {
            return; // throw?
        }
@ -50,7 +50,7 @@ public partial class ListItemViewModel(IListItem model, WeakReference<IPageConte
        TextToSuggest = li.TextToSuggest;
        Section = li.Section ?? string.Empty;
        var extensionDetails = li.Details;
-        if (extensionDetails != null)
+        if (extensionDetails is not null)
        {
            Details = new(extensionDetails, PageContext);
            Details.InitializeProperties();
@ -67,7 +67,7 @@ public partial class ListItemViewModel(IListItem model, WeakReference<IPageConte
        base.FetchProperty(propertyName);

        var model = this.Model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
@ -85,7 +85,7 @@ public partial class ListItemViewModel(IListItem model, WeakReference<IPageConte
                break;
            case nameof(Details):
                var extensionDetails = model.Details;
-                Details = extensionDetails != null ? new(extensionDetails, PageContext) : null;
+                Details = extensionDetails is not null ? new(extensionDetails, PageContext) : null;
                Details?.InitializeProperties();
                UpdateProperty(nameof(Details));
                UpdateProperty(nameof(HasDetails));
@ -136,7 +136,7 @@ public partial class ListItemViewModel(IListItem model, WeakReference<IPageConte
        Details?.SafeCleanup();

        var model = Model.Unsafe;
-        if (model != null)
+        if (model is not null)
        {
            // We don't need to revoke the PropChanged event handler here,
            // because we are just overriding CommandItem's FetchProperty and
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ListViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ListViewModel.cs
@ -298,11 +298,11 @@ public partial class ListViewModel : PageViewModel, IDisposable
    [RelayCommand]
    private void InvokeItem(ListItemViewModel? item)
    {
-        if (item != null)
+        if (item is not null)
        {
            WeakReferenceMessenger.Default.Send<PerformCommandMessage>(new(item.Command.Model, item.Model));
        }
-        else if (ShowEmptyContent && EmptyContent.PrimaryCommand?.Model.Unsafe != null)
+        else if (ShowEmptyContent && EmptyContent.PrimaryCommand?.Model.Unsafe is not null)
        {
            WeakReferenceMessenger.Default.Send<PerformCommandMessage>(new(
                EmptyContent.PrimaryCommand.Command.Model,
@ -314,14 +314,14 @@ public partial class ListViewModel : PageViewModel, IDisposable
    [RelayCommand]
    private void InvokeSecondaryCommand(ListItemViewModel? item)
    {
-        if (item != null)
+        if (item is not null)
        {
-            if (item.SecondaryCommand != null)
+            if (item.SecondaryCommand is not null)
            {
                WeakReferenceMessenger.Default.Send<PerformCommandMessage>(new(item.SecondaryCommand.Command.Model, item.Model));
            }
        }
-        else if (ShowEmptyContent && EmptyContent.SecondaryCommand?.Model.Unsafe != null)
+        else if (ShowEmptyContent && EmptyContent.SecondaryCommand?.Model.Unsafe is not null)
        {
            WeakReferenceMessenger.Default.Send<PerformCommandMessage>(new(
                EmptyContent.SecondaryCommand.Command.Model,
@ -332,12 +332,12 @@ public partial class ListViewModel : PageViewModel, IDisposable
    [RelayCommand]
    private void UpdateSelectedItem(ListItemViewModel? item)
    {
-        if (_lastSelectedItem != null)
+        if (_lastSelectedItem is not null)
        {
            _lastSelectedItem.PropertyChanged -= SelectedItemPropertyChanged;
        }

-        if (item != null)
+        if (item is not null)
        {
            SetSelectedItem(item);
        }
@ -383,7 +383,7 @@ public partial class ListViewModel : PageViewModel, IDisposable
    private void SelectedItemPropertyChanged(object? sender, System.ComponentModel.PropertyChangedEventArgs e)
    {
        var item = _lastSelectedItem;
-        if (item == null)
+        if (item is null)
        {
            return;
        }
@ -438,7 +438,7 @@ public partial class ListViewModel : PageViewModel, IDisposable
        base.InitializeProperties();

        var model = _model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
@ -465,7 +465,7 @@ public partial class ListViewModel : PageViewModel, IDisposable
    public void LoadMoreIfNeeded()
    {
        var model = this._model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }
@ -509,7 +509,7 @@ public partial class ListViewModel : PageViewModel, IDisposable
        base.FetchProperty(propertyName);

        var model = this._model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
@ -540,7 +540,7 @@ public partial class ListViewModel : PageViewModel, IDisposable
    private void UpdateEmptyContent()
    {
        UpdateProperty(nameof(ShowEmptyContent));
-        if (!ShowEmptyContent || EmptyContent.Model.Unsafe == null)
+        if (!ShowEmptyContent || EmptyContent.Model.Unsafe is null)
        {
            return;
        }
@ -588,7 +588,7 @@ public partial class ListViewModel : PageViewModel, IDisposable
        }

        var model = _model.Unsafe;
-        if (model != null)
+        if (model is not null)
        {
            model.ItemsChanged -= Model_ItemsChanged;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/LogMessageViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/LogMessageViewModel.cs
@ -22,7 +22,7 @@ public partial class LogMessageViewModel : ExtensionObjectViewModel
    public override void InitializeProperties()
    {
        var model = _model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/PageViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/PageViewModel.cs
@ -5,6 +5,7 @@
 using System.Collections.ObjectModel;
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
+using Microsoft.CmdPal.Common.Helpers;
 using Microsoft.CmdPal.Core.ViewModels.Models;
 using Microsoft.CommandPalette.Extensions;

@ -45,7 +46,7 @@ public partial class PageViewModel : ExtensionObjectViewModel, IPageContext
    [ObservableProperty]
    public partial AppExtensionHost ExtensionHost { get; private set; }

-    public bool HasStatusMessage => MostRecentStatusMessage != null;
+    public bool HasStatusMessage => MostRecentStatusMessage is not null;

    [ObservableProperty]
    [NotifyPropertyChangedFor(nameof(HasStatusMessage))]
@ -132,7 +133,7 @@ public partial class PageViewModel : ExtensionObjectViewModel, IPageContext
    public override void InitializeProperties()
    {
        var page = _pageModel.Unsafe;
-        if (page == null)
+        if (page is null)
        {
            return; // throw?
        }
@ -177,7 +178,7 @@ public partial class PageViewModel : ExtensionObjectViewModel, IPageContext
    protected virtual void FetchProperty(string propertyName)
    {
        var model = this._pageModel.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
@ -223,9 +224,10 @@ public partial class PageViewModel : ExtensionObjectViewModel, IPageContext
        extensionHint ??= ExtensionHost.GetExtensionDisplayName() ?? Title;
        Task.Factory.StartNew(
            () =>
-        {
-            ErrorMessage += $"A bug occurred in {$"the \"{extensionHint}\"" ?? "an unknown's"} extension's code:\n{ex.Message}\n{ex.Source}\n{ex.StackTrace}\n\n";
-        },
+            {
+                var message = DiagnosticsHelper.BuildExceptionMessage(ex, extensionHint);
+                ErrorMessage += message;
+            },
            CancellationToken.None,
            TaskCreationOptions.None,
            Scheduler);
@ -240,7 +242,7 @@ public partial class PageViewModel : ExtensionObjectViewModel, IPageContext
        ExtensionHost.StatusMessages.CollectionChanged -= StatusMessages_CollectionChanged;

        var model = _pageModel.Unsafe;
-        if (model != null)
+        if (model is not null)
        {
            model.PropChanged -= Model_PropChanged;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ProgressViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ProgressViewModel.cs
@ -24,7 +24,7 @@ public partial class ProgressViewModel : ExtensionObjectViewModel
    public override void InitializeProperties()
    {
        var model = Model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
@ -50,7 +50,7 @@ public partial class ProgressViewModel : ExtensionObjectViewModel
    protected virtual void FetchProperty(string propertyName)
    {
        var model = this.Model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ShellViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/ShellViewModel.cs
@ -120,7 +120,7 @@ public partial class ShellViewModel : ObservableObject,

        ////LoadedState = ViewModelLoadedState.Loading;
        if (!viewModel.IsInitialized
-            && viewModel.InitializeCommand != null)
+            && viewModel.InitializeCommand is not null)
        {
            _ = Task.Run(async () =>
            {
@ -185,7 +185,7 @@ public partial class ShellViewModel : ObservableObject,
    private void PerformCommand(PerformCommandMessage message)
    {
        var command = message.Command.Unsafe;
-        if (command == null)
+        if (command is null)
        {
            return;
        }
@ -205,7 +205,7 @@ public partial class ShellViewModel : ObservableObject,

                // Construct our ViewModel of the appropriate type and pass it the UI Thread context.
                var pageViewModel = _pageViewModelFactory.TryCreatePageViewModel(page, _isNested, host);
-                if (pageViewModel == null)
+                if (pageViewModel is null)
                {
                    Logger.LogError($"Failed to create ViewModel for page {page.GetType().Name}");
                    throw new NotSupportedException();
@ -240,7 +240,7 @@ public partial class ShellViewModel : ObservableObject,
        // TODO GH #525 This needs more better locking.
        lock (_invokeLock)
        {
-            if (_handleInvokeTask != null)
+            if (_handleInvokeTask is not null)
            {
                // do nothing - a command is already doing a thing
            }
@ -280,7 +280,7 @@ public partial class ShellViewModel : ObservableObject,

    private void UnsafeHandleCommandResult(ICommandResult? result)
    {
-        if (result == null)
+        if (result is null)
        {
            // No result, nothing to do.
            return;
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/StatusMessageViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/StatusMessageViewModel.cs
@ -17,7 +17,7 @@ public partial class StatusMessageViewModel : ExtensionObjectViewModel

    public ProgressViewModel? Progress { get; private set; }

-    public bool HasProgress => Progress != null;
+    public bool HasProgress => Progress is not null;

    public StatusMessageViewModel(IStatusMessage message, WeakReference<IPageContext> context)
        : base(context)
@ -28,7 +28,7 @@ public partial class StatusMessageViewModel : ExtensionObjectViewModel
    public override void InitializeProperties()
    {
        var model = Model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
@ -36,7 +36,7 @@ public partial class StatusMessageViewModel : ExtensionObjectViewModel
        Message = model.Message;
        State = model.State;
        var modelProgress = model.Progress;
-        if (modelProgress != null)
+        if (modelProgress is not null)
        {
            Progress = new(modelProgress, this.PageContext);
            Progress.InitializeProperties();
@ -61,7 +61,7 @@ public partial class StatusMessageViewModel : ExtensionObjectViewModel
    protected virtual void FetchProperty(string propertyName)
    {
        var model = this.Model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
@ -76,7 +76,7 @@ public partial class StatusMessageViewModel : ExtensionObjectViewModel
                break;
            case nameof(Progress):
                var modelProgress = model.Progress;
-                if (modelProgress != null)
+                if (modelProgress is not null)
                {
                    Progress = new(modelProgress, this.PageContext);
                    Progress.InitializeProperties();
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/TagViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/TagViewModel.cs
@ -28,7 +28,7 @@ public partial class TagViewModel(ITag _tag, WeakReference<IPageContext> context
    public override void InitializeProperties()
    {
        var model = _tagModel.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/AliasManager.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/AliasManager.cs
@ -35,7 +35,7 @@ public partial class AliasManager : ObservableObject
            try
            {
                var topLevelCommand = _topLevelCommandManager.LookupCommand(alias.CommandId);
-                if (topLevelCommand != null)
+                if (topLevelCommand is not null)
                {
                    WeakReferenceMessenger.Default.Send<ClearSearchMessage>();

@ -88,7 +88,7 @@ public partial class AliasManager : ObservableObject
        }

        // If we already have _this exact alias_, do nothing
-        if (newAlias != null &&
+        if (newAlias is not null &&
            _aliases.TryGetValue(newAlias.SearchPrefix, out var existingAlias))
        {
            if (existingAlias.CommandId == commandId)
@ -113,7 +113,7 @@ public partial class AliasManager : ObservableObject
            _aliases.Remove(alias.SearchPrefix);
        }

-        if (newAlias != null)
+        if (newAlias is not null)
        {
            AddAlias(newAlias);
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/AppStateModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/AppStateModel.cs
@ -55,7 +55,7 @@ public partial class AppStateModel : ObservableObject

            var loaded = JsonSerializer.Deserialize<AppStateModel>(jsonContent, JsonSerializationContext.Default.AppStateModel);

-            Debug.WriteLine(loaded != null ? "Loaded settings file" : "Failed to parse");
+            Debug.WriteLine(loaded is not null ? "Loaded settings file" : "Failed to parse");

            return loaded ?? new();
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/CommandProviderWrapper.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/CommandProviderWrapper.cs
@ -15,7 +15,7 @@ namespace Microsoft.CmdPal.UI.ViewModels;

 public sealed class CommandProviderWrapper
 {
-    public bool IsExtension => Extension != null;
+    public bool IsExtension => Extension is not null;

    private readonly bool isValid;

@ -188,14 +188,14 @@ public sealed class CommandProviderWrapper

            return topLevelViewModel;
        };
-        if (commands != null)
+        if (commands is not null)
        {
            TopLevelItems = commands
                .Select(c => makeAndAdd(c, false))
                .ToArray();
        }

-        if (fallbacks != null)
+        if (fallbacks is not null)
        {
            FallbackItems = fallbacks
                .Select(c => makeAndAdd(c, true))
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/CommandSettingsViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/CommandSettingsViewModel.cs
@ -18,18 +18,18 @@ public partial class CommandSettingsViewModel(ICommandSettings? _unsafeSettings,
    public bool Initialized { get; private set; }

    public bool HasSettings =>
-        _model.Unsafe != null && // We have a settings model AND
-        (!Initialized || SettingsPage != null); // we weren't initialized, OR we were, and we do have a settings page
+        _model.Unsafe is not null && // We have a settings model AND
+        (!Initialized || SettingsPage is not null); // we weren't initialized, OR we were, and we do have a settings page

    private void UnsafeInitializeProperties()
    {
        var model = _model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }

-        if (model.SettingsPage != null)
+        if (model.SettingsPage is not null)
        {
            SettingsPage = new CommandPaletteContentPageViewModel(model.SettingsPage, mainThread, provider.ExtensionHost);
            SettingsPage.InitializeProperties();
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/CreatedExtensionForm.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/CreatedExtensionForm.cs
@ -30,7 +30,7 @@ internal sealed partial class CreatedExtensionForm : NewExtensionFormBase
    public override ICommandResult SubmitForm(string inputs, string data)
    {
        var dataInput = JsonNode.Parse(data)?.AsObject();
-        if (dataInput == null)
+        if (dataInput is null)
        {
            return CommandResult.KeepOpen();
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/LogMessagesPage.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/LogMessagesPage.cs
@ -23,7 +23,7 @@ public partial class LogMessagesPage : ListPage

    private void LogMessages_CollectionChanged(object? sender, NotifyCollectionChangedEventArgs e)
    {
-        if (e.Action == NotifyCollectionChangedAction.Add && e.NewItems != null)
+        if (e.Action == NotifyCollectionChangedAction.Add && e.NewItems is not null)
        {
            foreach (var item in e.NewItems)
            {
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/MainListPage.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/MainListPage.cs
@ -9,6 +9,7 @@ using ManagedCommon;
 using Microsoft.CmdPal.Common.Helpers;
 using Microsoft.CmdPal.Core.ViewModels.Messages;
 using Microsoft.CmdPal.Ext.Apps;
+using Microsoft.CmdPal.UI.ViewModels.Messages;
 using Microsoft.CommandPalette.Extensions;
 using Microsoft.CommandPalette.Extensions.Toolkit;
 using Microsoft.Extensions.DependencyInjection;
@ -202,7 +203,7 @@ public partial class MainListPage : DynamicListPage,

            // If we don't have any previous filter results to work with, start
            // with a list of all our commands & apps.
-            if (_filteredItems == null)
+            if (_filteredItems is null)
            {
                _filteredItems = commands;
                _filteredItemsIncludesApps = _includeApps;
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/NewExtensionForm.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/NewExtensionForm.cs
@ -98,7 +98,7 @@ internal sealed partial class NewExtensionForm : NewExtensionFormBase
    public override CommandResult SubmitForm(string payload)
    {
        var formInput = JsonNode.Parse(payload)?.AsObject();
-        if (formInput == null)
+        if (formInput is null)
        {
            return CommandResult.KeepOpen();
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/NewExtensionPage.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/NewExtensionPage.cs
@ -14,7 +14,7 @@ public partial class NewExtensionPage : ContentPage

    public override IContent[] GetContent()
    {
-        return _resultForm != null ? [_resultForm] : [_inputForm];
+        return _resultForm is not null ? [_resultForm] : [_inputForm];
    }

    public NewExtensionPage()
@ -28,13 +28,13 @@ public partial class NewExtensionPage : ContentPage

    private void FormSubmitted(NewExtensionFormBase sender, NewExtensionFormBase? args)
    {
-        if (_resultForm != null)
+        if (_resultForm is not null)
        {
            _resultForm.FormSubmitted -= FormSubmitted;
        }

        _resultForm = args;
-        if (_resultForm != null)
+        if (_resultForm is not null)
        {
            _resultForm.FormSubmitted += FormSubmitted;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/OpenSettingsCommand.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/OpenSettingsCommand.cs
@ -3,7 +3,7 @@
 // See the LICENSE file in the project root for more information.

 using CommunityToolkit.Mvvm.Messaging;
-using Microsoft.CmdPal.Core.ViewModels.Messages;
+using Microsoft.CmdPal.UI.Messages;
 using Microsoft.CommandPalette.Extensions;
 using Microsoft.CommandPalette.Extensions.Toolkit;

--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/QuitAction.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/QuitAction.cs
@ -3,7 +3,7 @@
 // See the LICENSE file in the project root for more information.

 using CommunityToolkit.Mvvm.Messaging;
-using Microsoft.CmdPal.Core.ViewModels.Messages;
+using Microsoft.CmdPal.UI.ViewModels.Messages;
 using Microsoft.CommandPalette.Extensions;
 using Microsoft.CommandPalette.Extensions.Toolkit;

--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/ReloadExtensionsCommand.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Commands/ReloadExtensionsCommand.cs
@ -4,6 +4,7 @@

 using CommunityToolkit.Mvvm.Messaging;
 using Microsoft.CmdPal.Core.ViewModels.Messages;
+using Microsoft.CmdPal.UI.ViewModels.Messages;
 using Microsoft.CommandPalette.Extensions;
 using Microsoft.CommandPalette.Extensions.Toolkit;

--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/ContentMarkdownViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/ContentMarkdownViewModel.cs
@ -20,7 +20,7 @@ public partial class ContentMarkdownViewModel(IMarkdownContent _markdown, WeakRe
    public override void InitializeProperties()
    {
        var model = Model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }
@ -47,7 +47,7 @@ public partial class ContentMarkdownViewModel(IMarkdownContent _markdown, WeakRe
    protected void FetchProperty(string propertyName)
    {
        var model = Model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
@ -66,7 +66,7 @@ public partial class ContentMarkdownViewModel(IMarkdownContent _markdown, WeakRe
    {
        base.UnsafeCleanup();
        var model = Model.Unsafe;
-        if (model != null)
+        if (model is not null)
        {
            model.PropChanged -= Model_PropChanged;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/ContentTreeViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/ContentTreeViewModel.cs
@ -30,13 +30,13 @@ public partial class ContentTreeViewModel(ITreeContent _tree, WeakReference<IPag
    public override void InitializeProperties()
    {
        var model = Model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return;
        }

        var root = model.RootContent;
-        if (root != null)
+        if (root is not null)
        {
            RootContent = ViewModelFromContent(root, PageContext);
            RootContent?.InitializeProperties();
@ -82,7 +82,7 @@ public partial class ContentTreeViewModel(ITreeContent _tree, WeakReference<IPag
    protected void FetchProperty(string propertyName)
    {
        var model = Model.Unsafe;
-        if (model == null)
+        if (model is null)
        {
            return; // throw?
        }
@ -91,7 +91,7 @@ public partial class ContentTreeViewModel(ITreeContent _tree, WeakReference<IPag
        {
            case nameof(RootContent):
                var root = model.RootContent;
-                if (root != null)
+                if (root is not null)
                {
                    RootContent = ViewModelFromContent(root, PageContext);
                }
@ -119,7 +119,7 @@ public partial class ContentTreeViewModel(ITreeContent _tree, WeakReference<IPag
            foreach (var item in newItems)
            {
                var viewModel = ViewModelFromContent(item, PageContext);
-                if (viewModel != null)
+                if (viewModel is not null)
                {
                    viewModel.InitializeProperties();
                    newContent.Add(viewModel);
@ -153,7 +153,7 @@ public partial class ContentTreeViewModel(ITreeContent _tree, WeakReference<IPag

        Children.Clear();
        var model = Model.Unsafe;
-        if (model != null)
+        if (model is not null)
        {
            model.PropChanged -= Model_PropChanged;
            model.ItemsChanged -= Model_ItemsChanged;
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/HotkeyManager.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/HotkeyManager.cs
@ -29,7 +29,7 @@ public partial class HotkeyManager : ObservableObject
            }
        }

-        _commandHotkeys.RemoveAll(item => item.Hotkey == null);
+        _commandHotkeys.RemoveAll(item => item.Hotkey is null);

        foreach (var item in _commandHotkeys)
        {
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/Messages/OpenSettingsMessage.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/Messages/OpenSettingsMessage.cs
@ -2,7 +2,7 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.

-namespace Microsoft.CmdPal.Core.ViewModels.Messages;
+namespace Microsoft.CmdPal.UI.Messages;

 public record OpenSettingsMessage()
 {
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/Messages/QuitMessage.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/Messages/QuitMessage.cs
@ -2,7 +2,7 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.

-namespace Microsoft.CmdPal.Core.ViewModels.Messages;
+namespace Microsoft.CmdPal.UI.ViewModels.Messages;

 /// <summary>
 /// Message which closes the application. Used by <see cref="QuitCommand"/> via <see cref="BuiltInsCommandProvider"/>.
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/Messages/ReloadCommandsMessage.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/Messages/ReloadCommandsMessage.cs
@ -2,7 +2,7 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.

-namespace Microsoft.CmdPal.Core.ViewModels.Messages;
+namespace Microsoft.CmdPal.UI.ViewModels.Messages;

 public record ReloadCommandsMessage()
 {
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/Messages/UpdateFallbackItemsMessage.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/Messages/UpdateFallbackItemsMessage.cs
@ -2,7 +2,7 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.

-namespace Microsoft.CmdPal.Core.ViewModels.Messages;
+namespace Microsoft.CmdPal.UI.ViewModels.Messages;

 public record UpdateFallbackItemsMessage()
 {
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Models/ExtensionService.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/Models/ExtensionService.cs
@ -90,7 +90,7 @@ public partial class ExtensionService : IExtensionService, IDisposable
        }).Result;
        var isExtension = isCmdPalExtensionResult.IsExtension;
        var extension = isCmdPalExtensionResult.Extension;
-        if (isExtension && extension != null)
+        if (isExtension && extension is not null)
        {
            CommandPaletteHost.Instance.DebugLog($"Installed new extension app {extension.DisplayName}");

@ -152,7 +152,7 @@ public partial class ExtensionService : IExtensionService, IDisposable
            {
                var (cmdPalProvider, classId) = await GetCmdPalExtensionPropertiesAsync(extension);

-                return new(cmdPalProvider != null && classId.Count != 0, extension);
+                return new(cmdPalProvider is not null && classId.Count != 0, extension);
            }
        }

@ -237,7 +237,7 @@ public partial class ExtensionService : IExtensionService, IDisposable
    {
        var (cmdPalProvider, classIds) = await GetCmdPalExtensionPropertiesAsync(extension);

-        if (cmdPalProvider == null || classIds.Count == 0)
+        if (cmdPalProvider is null || classIds.Count == 0)
        {
            return [];
        }
@ -352,12 +352,12 @@ public partial class ExtensionService : IExtensionService, IDisposable
    {
        var propSetList = new List<string>();
        var singlePropertySet = GetSubPropertySet(activationPropSet, CreateInstanceProperty);
-        if (singlePropertySet != null)
+        if (singlePropertySet is not null)
        {
            var classId = GetProperty(singlePropertySet, ClassIdProperty);

            // If the instance has a classId as a single string, then it's only supporting a single instance.
-            if (classId != null)
+            if (classId is not null)
            {
                propSetList.Add(classId);
            }
@ -365,7 +365,7 @@ public partial class ExtensionService : IExtensionService, IDisposable
        else
        {
            var propertySetArray = GetSubPropertySetArray(activationPropSet, CreateInstanceProperty);
-            if (propertySetArray != null)
+            if (propertySetArray is not null)
            {
                foreach (var prop in propertySetArray)
                {
@ -375,7 +375,7 @@ public partial class ExtensionService : IExtensionService, IDisposable
                    }

                    var classId = GetProperty(propertySet, ClassIdProperty);
-                    if (classId != null)
+                    if (classId is not null)
                    {
                        propSetList.Add(classId);
                    }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/ProviderSettings.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/ProviderSettings.cs
@ -35,7 +35,7 @@ public class ProviderSettings
    public void Connect(CommandProviderWrapper wrapper)
    {
        ProviderId = wrapper.ProviderId;
-        IsBuiltin = wrapper.Extension == null;
+        IsBuiltin = wrapper.Extension is null;

        ProviderDisplayName = wrapper.DisplayName;

--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/ProviderSettingsViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/ProviderSettingsViewModel.cs
@ -7,7 +7,7 @@ using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Messaging;
 using Microsoft.CmdPal.Common.Services;
 using Microsoft.CmdPal.Core.ViewModels;
-using Microsoft.CmdPal.Core.ViewModels.Messages;
+using Microsoft.CmdPal.UI.ViewModels.Messages;
 using Microsoft.CmdPal.UI.ViewModels.Properties;
 using Microsoft.Extensions.DependencyInjection;

@ -33,7 +33,7 @@ public partial class ProviderSettingsViewModel(
        Resources.builtin_disabled_extension;

    [MemberNotNullWhen(true, nameof(Extension))]
-    public bool IsFromExtension => _provider.Extension != null;
+    public bool IsFromExtension => _provider.Extension is not null;

    public IExtensionWrapper? Extension => _provider.Extension;

@ -76,7 +76,7 @@ public partial class ProviderSettingsViewModel(
    {
        get
        {
-            if (_provider.Settings == null)
+            if (_provider.Settings is null)
            {
                return false;
            }
@ -100,7 +100,7 @@ public partial class ProviderSettingsViewModel(
    {
        get
        {
-            if (_provider.Settings == null)
+            if (_provider.Settings is null)
            {
                return null;
            }
@ -126,7 +126,7 @@ public partial class ProviderSettingsViewModel(
    {
        get
        {
-            if (field == null)
+            if (field is null)
            {
                field = BuildTopLevelViewModels();
            }
@ -149,7 +149,7 @@ public partial class ProviderSettingsViewModel(
    {
        get
        {
-            if (field == null)
+            if (field is null)
            {
                field = BuildFallbackViewModels();
            }
@ -173,7 +173,7 @@ public partial class ProviderSettingsViewModel(

    private void InitializeSettingsPage()
    {
-        if (_provider.Settings == null)
+        if (_provider.Settings is null)
        {
            return;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/RecentCommandsManager.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/RecentCommandsManager.cs
@ -30,7 +30,7 @@ public partial class RecentCommandsManager : ObservableObject
            // These numbers are vaguely scaled so that "VS" will make "Visual Studio" the
            // match after one use.
            // Usually it has a weight of 84, compared to 109 for the VS cmd prompt
-            if (entry.Item != null)
+            if (entry.Item is not null)
            {
                var index = entry.Index;

@ -61,7 +61,7 @@ public partial class RecentCommandsManager : ObservableObject
            var entry = History
            .Where(item => item.CommandId == commandId)
            .FirstOrDefault();
-            if (entry == null)
+            if (entry is null)
            {
                var newitem = new HistoryItem() { CommandId = commandId, Uses = 1 };
                History.Insert(0, newitem);
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/SettingsModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/SettingsModel.cs
@ -95,7 +95,7 @@ public partial class SettingsModel : ObservableObject

            var loaded = JsonSerializer.Deserialize<SettingsModel>(jsonContent, JsonSerializationContext.Default.SettingsModel);

-            Debug.WriteLine(loaded != null ? "Loaded settings file" : "Failed to parse");
+            Debug.WriteLine(loaded is not null ? "Loaded settings file" : "Failed to parse");

            return loaded ?? new();
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/TopLevelCommandManager.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/TopLevelCommandManager.cs
@ -12,7 +12,7 @@ using ManagedCommon;
 using Microsoft.CmdPal.Common.Helpers;
 using Microsoft.CmdPal.Common.Services;
 using Microsoft.CmdPal.Core.ViewModels;
-using Microsoft.CmdPal.Core.ViewModels.Messages;
+using Microsoft.CmdPal.UI.ViewModels.Messages;
 using Microsoft.CommandPalette.Extensions;
 using Microsoft.CommandPalette.Extensions.Toolkit;
 using Microsoft.Extensions.DependencyInjection;
@ -151,7 +151,7 @@ public partial class TopLevelCommandManager : ObservableObject,
        WeakReference<IPageContext> weakSelf = new(this);
        await sender.LoadTopLevelCommands(_serviceProvider, weakSelf);

-        List<TopLevelViewModel> newItems = [..sender.TopLevelItems];
+        List<TopLevelViewModel> newItems = [.. sender.TopLevelItems];
        foreach (var i in sender.FallbackItems)
        {
            if (i.IsEnabled)
@ -170,20 +170,29 @@ public partial class TopLevelCommandManager : ObservableObject,
            // TODO: just added a lock around all of this anyway, but keeping the clone
            // while looking on some other ways to improve this; can be removed later.
            List<TopLevelViewModel> clone = [.. TopLevelCommands];
-            var startIndex = -1;

+            var startIndex = FindIndexForFirstProviderItem(clone, sender.ProviderId);
+            clone.RemoveAll(item => item.CommandProviderId == sender.ProviderId);
+            clone.InsertRange(startIndex, newItems);
+
+            ListHelpers.InPlaceUpdateList(TopLevelCommands, clone);
+        }
+
+        return;
+
+        static int FindIndexForFirstProviderItem(List<TopLevelViewModel> topLevelItems, string providerId)
+        {
            // Tricky: all Commands from a single provider get added to the
            // top-level list all together, in a row. So if we find just the first
            // one, we can slice it out and insert the new ones there.
-            for (var i = 0; i < clone.Count; i++)
+            for (var i = 0; i < topLevelItems.Count; i++)
            {
-                var wrapper = clone[i];
+                var wrapper = topLevelItems[i];
                try
                {
-                    if (sender.ProviderId == wrapper.CommandProviderId)
+                    if (providerId == wrapper.CommandProviderId)
                    {
-                        startIndex = i;
-                        break;
+                        return i;
                    }
                }
                catch
@ -191,9 +200,8 @@ public partial class TopLevelCommandManager : ObservableObject,
                }
            }

-            clone.RemoveAll(item => item.CommandProviderId == sender.ProviderId);
-            clone.InsertRange(startIndex, newItems);
-            ListHelpers.InPlaceUpdateList(TopLevelCommands, clone);
+            // If we didn't find any, then we just append the new commands to the end of the list.
+            return topLevelItems.Count;
        }
    }

@ -241,7 +249,7 @@ public partial class TopLevelCommandManager : ObservableObject,
            _extensionCommandProviders.Clear();
        }

-        if (extensions != null)
+        if (extensions is not null)
        {
            await StartExtensionsAndGetCommands(extensions);
        }
@ -275,7 +283,7 @@ public partial class TopLevelCommandManager : ObservableObject,
        var startTasks = extensions.Select(StartExtensionWithTimeoutAsync);

        // Wait for all extensions to start
-        var wrappers = (await Task.WhenAll(startTasks)).Where(wrapper => wrapper != null).Select(w => w!).ToList();
+        var wrappers = (await Task.WhenAll(startTasks)).Where(wrapper => wrapper is not null).Select(w => w!).ToList();

        lock (_commandProvidersLock)
        {
@ -285,7 +293,7 @@ public partial class TopLevelCommandManager : ObservableObject,
        // Load the commands from the providers in parallel
        var loadTasks = wrappers.Select(LoadCommandsWithTimeoutAsync);

-        var commandSets = (await Task.WhenAll(loadTasks)).Where(results => results != null).Select(r => r!).ToList();
+        var commandSets = (await Task.WhenAll(loadTasks)).Where(results => results is not null).Select(r => r!).ToList();

        lock (TopLevelCommands)
        {
@ -402,8 +410,8 @@ public partial class TopLevelCommandManager : ObservableObject,

    void IPageContext.ShowException(Exception ex, string? extensionHint)
    {
-        var errorMessage = $"A bug occurred in {$"the \"{extensionHint}\"" ?? "an unknown's"} extension's code:\n{ex.Message}\n{ex.Source}\n{ex.StackTrace}\n\n";
-        CommandPaletteHost.Instance.Log(errorMessage);
+        var message = DiagnosticsHelper.BuildExceptionMessage(ex, extensionHint ?? "TopLevelCommandManager");
+        CommandPaletteHost.Instance.Log(message);
    }

    internal bool IsProviderActive(string id)
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/TopLevelViewModel.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI.ViewModels/TopLevelViewModel.cs
@ -8,6 +8,7 @@ using CommunityToolkit.Mvvm.Messaging;
 using ManagedCommon;
 using Microsoft.CmdPal.Core.ViewModels;
 using Microsoft.CmdPal.Core.ViewModels.Messages;
+using Microsoft.CmdPal.UI.ViewModels.Messages;
 using Microsoft.CmdPal.UI.ViewModels.Settings;
 using Microsoft.CommandPalette.Extensions;
 using Microsoft.CommandPalette.Extensions.Toolkit;
@ -239,7 +240,7 @@ public sealed partial class TopLevelViewModel : ObservableObject, IListItem
    private void FetchAliasFromAliasManager()
    {
        var am = _serviceProvider.GetService<AliasManager>();
-        if (am != null)
+        if (am is not null)
        {
            var commandAlias = am.AliasFromId(Id);
            if (commandAlias is not null)
@ -253,7 +254,7 @@ public sealed partial class TopLevelViewModel : ObservableObject, IListItem
    private void UpdateHotkey()
    {
        var hotkey = _settings.CommandHotkeys.Where(hk => hk.CommandId == Id).FirstOrDefault();
-        if (hotkey != null)
+        if (hotkey is not null)
        {
            _hotkey = hotkey.Hotkey;
        }
@ -263,12 +264,12 @@ public sealed partial class TopLevelViewModel : ObservableObject, IListItem
    {
        List<Tag> tags = [];

-        if (Hotkey != null)
+        if (Hotkey is not null)
        {
            tags.Add(new Tag() { Text = Hotkey.ToString() });
        }

-        if (Alias != null)
+        if (Alias is not null)
        {
            tags.Add(new Tag() { Text = Alias.SearchPrefix });
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/CommandBar.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/CommandBar.xaml.cs
@ -10,7 +10,6 @@ using Microsoft.CmdPal.UI.Views;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
 using Microsoft.UI.Xaml.Controls.Primitives;
-using Microsoft.UI.Xaml.Input;
 using Windows.System;

 namespace Microsoft.CmdPal.UI.Controls;
@ -50,7 +49,7 @@ public sealed partial class CommandBar : UserControl,
            return;
        }

-        if (message.Element == null)
+        if (message.Element is null)
        {
            _ = DispatcherQueue.TryEnqueue(
                () =>
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/ContentFormControl.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/ContentFormControl.xaml.cs
@ -44,7 +44,7 @@ public sealed partial class ContentFormControl : UserControl
        // 5% BODGY: if we set this multiple times over the lifetime of the app,
        // then the second call will explode, because "CardOverrideStyles is already the child of another element".
        // SO only set this once.
-        if (_renderer.OverrideStyles == null)
+        if (_renderer.OverrideStyles is null)
        {
            _renderer.OverrideStyles = CardOverrideStyles;
        }
@ -55,19 +55,19 @@ public sealed partial class ContentFormControl : UserControl

    private void AttachViewModel(ContentFormViewModel? vm)
    {
-        if (_viewModel != null)
+        if (_viewModel is not null)
        {
            _viewModel.PropertyChanged -= ViewModel_PropertyChanged;
        }

        _viewModel = vm;

-        if (_viewModel != null)
+        if (_viewModel is not null)
        {
            _viewModel.PropertyChanged += ViewModel_PropertyChanged;

            var c = _viewModel.Card;
-            if (c != null)
+            if (c is not null)
            {
                DisplayCard(c);
            }
@ -76,7 +76,7 @@ public sealed partial class ContentFormControl : UserControl

    private void ViewModel_PropertyChanged(object? sender, System.ComponentModel.PropertyChangedEventArgs e)
    {
-        if (ViewModel == null)
+        if (ViewModel is null)
        {
            return;
        }
@ -84,7 +84,7 @@ public sealed partial class ContentFormControl : UserControl
        if (e.PropertyName == nameof(ViewModel.Card))
        {
            var c = ViewModel.Card;
-            if (c != null)
+            if (c is not null)
            {
                DisplayCard(c);
            }
@ -95,7 +95,7 @@ public sealed partial class ContentFormControl : UserControl
    {
        _renderedCard = _renderer.RenderAdaptiveCard(result.AdaptiveCard);
        ContentGrid.Children.Clear();
-        if (_renderedCard.FrameworkElement != null)
+        if (_renderedCard.FrameworkElement is not null)
        {
            ContentGrid.Children.Add(_renderedCard.FrameworkElement);

@ -148,7 +148,7 @@ public sealed partial class ContentFormControl : UserControl

            // Recursively check children
            var result = FindFirstFocusableElement(child);
-            if (result != null)
+            if (result is not null)
            {
                return result;
            }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/ContentIcon.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/ContentIcon.cs
@ -2,6 +2,7 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.

+using System.Diagnostics;
 using CommunityToolkit.WinUI;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
@ -35,6 +36,17 @@ public partial class ContentIcon : FontIcon
    {
        if (this.FindDescendants().OfType<Grid>().FirstOrDefault() is Grid grid && Content is not null)
        {
+            if (grid.Children.Contains(Content))
+            {
+                return;
+            }
+
+            if (Content is FrameworkElement element && element.Parent is not null)
+            {
+                Debug.Assert(false, $"IconBoxElement Content is already parented to {element.Parent.GetType().Name}");
+                return;
+            }
+
            grid.Children.Add(Content);
        }
    }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/ContextMenu.xaml
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/ContextMenu.xaml
@ -112,7 +112,7 @@
                <Rectangle
                    Height="1"
                    Margin="-16,-12,-12,-12"
-                    Fill="{ThemeResource MenuFlyoutSeparatorThemeBrush}" />
+                    Fill="{ThemeResource MenuFlyoutSeparatorBackground}" />
            </DataTemplate>
        </ResourceDictionary>
    </UserControl.Resources>
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/ContextMenu.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/ContextMenu.xaml.cs
@ -31,7 +31,7 @@ public sealed partial class ContextMenu : UserControl,
        WeakReferenceMessenger.Default.Register<UpdateCommandBarMessage>(this);
        WeakReferenceMessenger.Default.Register<TryCommandKeybindingMessage>(this);

-        if (ViewModel != null)
+        if (ViewModel is not null)
        {
            ViewModel.PropertyChanged += ViewModel_PropertyChanged;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/IconBox.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/IconBox.cs
@ -91,7 +91,7 @@ public partial class IconBox : ContentControl
    {
        if (d is IconBox @this)
        {
-            if (e.NewValue == null)
+            if (e.NewValue is null)
            {
                @this.Source = null;
            }
@ -104,7 +104,7 @@ public partial class IconBox : ContentControl
                    var requestedTheme = @this.ActualTheme;
                    var eventArgs = new SourceRequestedEventArgs(e.NewValue, requestedTheme);

-                    if (@this.SourceRequested != null)
+                    if (@this.SourceRequested is not null)
                    {
                        await @this.SourceRequested.InvokeAsync(@this, eventArgs);

@ -142,7 +142,7 @@ public partial class IconBox : ContentControl
                            iconData = requestedTheme == ElementTheme.Light ? info.Light : info.Dark;
                        }

-                        if (iconData != null &&
+                        if (iconData is not null &&
                            @this.Source is FontIconSource)
                        {
                            if (!string.IsNullOrEmpty(iconData.Icon) && iconData.Icon.Length <= 2)
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/KeyVisual/KeyVisual.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/KeyVisual/KeyVisual.cs
@ -2,7 +2,6 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.

-using Microsoft.CmdPal.UI;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
 using Microsoft.UI.Xaml.Markup;
@ -80,12 +79,12 @@ public sealed partial class KeyVisual : Control

    private void Update()
    {
-        if (_keyVisual == null)
+        if (_keyVisual is null)
        {
            return;
        }

-        if (_keyVisual.Content != null)
+        if (_keyVisual.Content is not null)
        {
            if (_keyVisual.Content.GetType() == typeof(string))
            {
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/SearchBar.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/SearchBar.xaml.cs
@ -51,13 +51,13 @@ public sealed partial class SearchBar : UserControl,
        //// TODO: If the Debounce timer hasn't fired, we may want to store the current Filter in the OldValue/prior VM, but we don't want that to go actually do work...
        var @this = (SearchBar)d;

-        if (@this != null
+        if (@this is not null
            && e.OldValue is PageViewModel old)
        {
            old.PropertyChanged -= @this.Page_PropertyChanged;
        }

-        if (@this != null
+        if (@this is not null
            && e.NewValue is PageViewModel page)
        {
            // TODO: In some cases we probably want commands to clear a filter
@ -85,7 +85,7 @@ public sealed partial class SearchBar : UserControl,
        {
            this.FilterBox.Text = string.Empty;

-            if (CurrentPageViewModel != null)
+            if (CurrentPageViewModel is not null)
            {
                CurrentPageViewModel.Filter = string.Empty;
            }
@ -143,7 +143,7 @@ public sealed partial class SearchBar : UserControl,
                FilterBox.Text = string.Empty;

                // hack TODO GH #245
-                if (CurrentPageViewModel != null)
+                if (CurrentPageViewModel is not null)
                {
                    CurrentPageViewModel.Filter = FilterBox.Text;
                }
@ -154,7 +154,7 @@ public sealed partial class SearchBar : UserControl,
        else if (e.Key == VirtualKey.Back)
        {
            // hack TODO GH #245
-            if (CurrentPageViewModel != null)
+            if (CurrentPageViewModel is not null)
            {
                CurrentPageViewModel.Filter = FilterBox.Text;
            }
@ -318,7 +318,7 @@ public sealed partial class SearchBar : UserControl,
        }

        // Actually plumb Filtering to the view model
-        if (CurrentPageViewModel != null)
+        if (CurrentPageViewModel is not null)
        {
            CurrentPageViewModel.Filter = FilterBox.Text;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/ShortcutControl/ShortcutControl.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/ShortcutControl/ShortcutControl.xaml.cs
@ -39,13 +39,13 @@ public sealed partial class ShortcutControl : UserControl, IDisposable, IRecipie
    private static void OnAllowDisableChanged(DependencyObject d, DependencyPropertyChangedEventArgs? e)
    {
        var me = d as ShortcutControl;
-        if (me == null)
+        if (me is null)
        {
            return;
        }

        var description = me.c?.FindDescendant<TextBlock>();
-        if (description == null)
+        if (description is null)
        {
            return;
        }
@ -431,7 +431,7 @@ public sealed partial class ShortcutControl : UserControl, IDisposable, IRecipie

    private void ShortcutDialog_PrimaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args)
    {
-        if (lastValidSettings != null && ComboIsValid(lastValidSettings))
+        if (lastValidSettings is not null && ComboIsValid(lastValidSettings))
        {
            HotkeySettings = lastValidSettings with { };
        }
@ -458,7 +458,7 @@ public sealed partial class ShortcutControl : UserControl, IDisposable, IRecipie

    private static bool ComboIsValid(HotkeySettings? settings)
    {
-        return settings != null && (settings.IsValid() || settings.IsEmpty());
+        return settings is not null && (settings.IsValid() || settings.IsEmpty());
    }

    public void Receive(WindowActivatedEventArgs message) => DoWindowActivated(message);
@ -466,12 +466,12 @@ public sealed partial class ShortcutControl : UserControl, IDisposable, IRecipie
    private void DoWindowActivated(WindowActivatedEventArgs args)
    {
        args.Handled = true;
-        if (args.WindowActivationState != WindowActivationState.Deactivated && (hook == null || hook.GetDisposedState() == true))
+        if (args.WindowActivationState != WindowActivationState.Deactivated && (hook is null || hook.GetDisposedState() == true))
        {
            // If the PT settings window gets focussed/activated again, we enable the keyboard hook to catch the keyboard input.
            hook = new HotkeySettingsControlHook(Hotkey_KeyDown, Hotkey_KeyUp, Hotkey_IsActive, FilterAccessibleKeyboardEvents);
        }
-        else if (args.WindowActivationState == WindowActivationState.Deactivated && hook != null && hook.GetDisposedState() == false)
+        else if (args.WindowActivationState == WindowActivationState.Deactivated && hook is not null && hook.GetDisposedState() == false)
        {
            // If the PT settings window lost focus/activation, we disable the keyboard hook to allow keyboard input on other windows.
            hook.Dispose();
@ -490,7 +490,7 @@ public sealed partial class ShortcutControl : UserControl, IDisposable, IRecipie
        {
            if (disposing)
            {
-                if (hook != null)
+                if (hook is not null)
                {
                    hook.Dispose();
                }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/ShortcutControl/ShortcutDialogContentControl.xaml
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/ShortcutControl/ShortcutDialogContentControl.xaml
@ -15,7 +15,7 @@
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>

-        <TextBlock Grid.Row="0" />
+        <TextBlock Grid.Row="0" IsTabStop="True" />

        <ItemsControl
            x:Name="KeysControl"
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/Tag.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Controls/Tag.xaml.cs
@ -84,7 +84,7 @@ public partial class Tag : Control
            return;
        }

-        if (tag.ForegroundColor != null &&
+        if (tag.ForegroundColor is not null &&
            OptionalColorBrushCacheProvider.Convert(tag.ForegroundColor.Value) is SolidColorBrush brush)
        {
            tag.Foreground = brush;
@ -114,7 +114,7 @@ public partial class Tag : Control
            return;
        }

-        if (tag.BackgroundColor != null &&
+        if (tag.BackgroundColor is not null &&
            OptionalColorBrushCacheProvider.Convert(tag.BackgroundColor.Value) is SolidColorBrush brush)
        {
            tag.Background = brush;
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/ExtViews/ContentPage.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/ExtViews/ContentPage.xaml.cs
@ -34,8 +34,14 @@ public sealed partial class ContentPage : Page,
    public ContentPage()
    {
        this.InitializeComponent();
-        WeakReferenceMessenger.Default.Register<ActivateSelectedListItemMessage>(this);
-        WeakReferenceMessenger.Default.Register<ActivateSecondaryCommandMessage>(this);
+        this.Unloaded += OnUnloaded;
+    }
+
+    private void OnUnloaded(object sender, RoutedEventArgs e)
+    {
+        // Unhook from everything to ensure nothing can reach us
+        // between this point and our complete and utter destruction.
+        WeakReferenceMessenger.Default.UnregisterAll(this);
    }

    protected override void OnNavigatedTo(NavigationEventArgs e)
@ -45,6 +51,16 @@ public sealed partial class ContentPage : Page,
            ViewModel = vm;
        }

+        if (!WeakReferenceMessenger.Default.IsRegistered<ActivateSelectedListItemMessage>(this))
+        {
+            WeakReferenceMessenger.Default.Register<ActivateSelectedListItemMessage>(this);
+        }
+
+        if (!WeakReferenceMessenger.Default.IsRegistered<ActivateSecondaryCommandMessage>(this))
+        {
+            WeakReferenceMessenger.Default.Register<ActivateSecondaryCommandMessage>(this);
+        }
+
        base.OnNavigatedTo(e);
    }

--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/ExtViews/ListPage.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/ExtViews/ListPage.xaml.cs
@ -15,6 +15,7 @@ using Microsoft.UI.Xaml.Controls;
 using Microsoft.UI.Xaml.Input;
 using Microsoft.UI.Xaml.Media;
 using Microsoft.UI.Xaml.Navigation;
+using Windows.System;

 namespace Microsoft.CmdPal.UI;

@ -24,6 +25,8 @@ public sealed partial class ListPage : Page,
    IRecipient<ActivateSelectedListItemMessage>,
    IRecipient<ActivateSecondaryCommandMessage>
 {
+    private InputSource _lastInputSource;
+
    private ListViewModel? ViewModel
    {
        get => (ListViewModel?)GetValue(ViewModelProperty);
@ -39,6 +42,8 @@ public sealed partial class ListPage : Page,
        this.InitializeComponent();
        this.NavigationCacheMode = NavigationCacheMode.Disabled;
        this.ItemsList.Loaded += ItemsList_Loaded;
+        this.ItemsList.PreviewKeyDown += ItemsList_PreviewKeyDown;
+        this.ItemsList.PointerPressed += ItemsList_PointerPressed;
    }

    protected override void OnNavigatedTo(NavigationEventArgs e)
@ -74,7 +79,7 @@ public sealed partial class ListPage : Page,
        WeakReferenceMessenger.Default.Unregister<ActivateSelectedListItemMessage>(this);
        WeakReferenceMessenger.Default.Unregister<ActivateSecondaryCommandMessage>(this);

-        if (ViewModel != null)
+        if (ViewModel is not null)
        {
            ViewModel.PropertyChanged -= ViewModel_PropertyChanged;
            ViewModel.ItemsUpdated -= Page_ItemsUpdated;
@ -98,6 +103,12 @@ public sealed partial class ListPage : Page,
    {
        if (e.ClickedItem is ListItemViewModel item)
        {
+            if (_lastInputSource == InputSource.Keyboard)
+            {
+                ViewModel?.InvokeItemCommand.Execute(item);
+                return;
+            }
+
            var settings = App.Current.Services.GetService<SettingsModel>()!;
            if (settings.SingleClickActivates)
            {
@ -142,13 +153,13 @@ public sealed partial class ListPage : Page,
        // here, then in Page_ItemsUpdated trying to select that cached item if
        // it's in the list (otherwise, clear the cache), but that seems
        // aggressively BODGY for something that mostly just works today.
-        if (ItemsList.SelectedItem != null)
+        if (ItemsList.SelectedItem is not null)
        {
            ItemsList.ScrollIntoView(ItemsList.SelectedItem);

            // Automation notification for screen readers
            var listViewPeer = Microsoft.UI.Xaml.Automation.Peers.ListViewAutomationPeer.CreatePeerForElement(ItemsList);
-            if (listViewPeer != null && li != null)
+            if (listViewPeer is not null && li is not null)
            {
                var notificationText = li.Title;
                listViewPeer.RaiseNotificationEvent(
@ -165,7 +176,7 @@ public sealed partial class ListPage : Page,
        // Find the ScrollViewer in the ListView
        var listViewScrollViewer = FindScrollViewer(this.ItemsList);

-        if (listViewScrollViewer != null)
+        if (listViewScrollViewer is not null)
        {
            listViewScrollViewer.ViewChanged += ListViewScrollViewer_ViewChanged;
        }
@ -174,7 +185,7 @@ public sealed partial class ListPage : Page,
    private void ListViewScrollViewer_ViewChanged(object? sender, ScrollViewerViewChangedEventArgs e)
    {
        var scrollView = sender as ScrollViewer;
-        if (scrollView == null)
+        if (scrollView is null)
        {
            return;
        }
@ -256,7 +267,7 @@ public sealed partial class ListPage : Page,
                page.PropertyChanged += @this.ViewModel_PropertyChanged;
                page.ItemsUpdated += @this.Page_ItemsUpdated;
            }
-            else if (e.NewValue == null)
+            else if (e.NewValue is null)
            {
                Logger.LogDebug("cleared view model");
            }
@ -274,7 +285,7 @@ public sealed partial class ListPage : Page,
        // ItemsList_SelectionChanged again to give us another chance to change
        // the selection from null -> something. Better to just update the
        // selection once, at the end of all the updating.
-        if (ItemsList.SelectedItem == null)
+        if (ItemsList.SelectedItem is null)
        {
            ItemsList.SelectedIndex = 0;
        }
@ -307,7 +318,7 @@ public sealed partial class ListPage : Page,
        {
            var child = VisualTreeHelper.GetChild(parent, i);
            var result = FindScrollViewer(child);
-            if (result != null)
+            if (result is not null)
            {
                return result;
            }
@ -329,7 +340,7 @@ public sealed partial class ListPage : Page,
            _ => (null, null),
        };

-        if (item == null || element == null)
+        if (item is null || element is null)
        {
            return;
        }
@ -363,4 +374,21 @@ public sealed partial class ListPage : Page,
    {
        _ = DispatcherQueue.TryEnqueue(() => WeakReferenceMessenger.Default.Send<CloseContextMenuMessage>());
    }
+
+    private void ItemsList_PointerPressed(object sender, PointerRoutedEventArgs e) => _lastInputSource = InputSource.Pointer;
+
+    private void ItemsList_PreviewKeyDown(object sender, KeyRoutedEventArgs e)
+    {
+        if (e.Key is VirtualKey.Enter or VirtualKey.Space)
+        {
+            _lastInputSource = InputSource.Keyboard;
+        }
+    }
+
+    private enum InputSource
+    {
+        None,
+        Keyboard,
+        Pointer,
+    }
 }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Helpers/GpoValueChecker.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Helpers/GpoValueChecker.cs
@ -2,13 +2,6 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.

-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using Microsoft.CmdPal.Ext.Bookmarks;
-using Microsoft.UI.Xaml.Documents;
 using Microsoft.Win32;

 namespace Microsoft.CmdPal.UI.Helpers;
@ -63,7 +56,7 @@ internal static class GpoValueChecker
    {
        using (RegistryKey? key = rootKey.OpenSubKey(subKeyPath, false))
        {
-            if (key == null)
+            if (key is null)
            {
                return null;
            }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Helpers/IconCacheProvider.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Helpers/IconCacheProvider.cs
@ -4,7 +4,6 @@

 using Microsoft.CmdPal.Core.ViewModels;
 using Microsoft.CmdPal.UI.Controls;
-using Microsoft.CmdPal.UI.Helpers;

 namespace Microsoft.CmdPal.UI.Helpers;

@ -19,7 +18,7 @@ public static partial class IconCacheProvider
    public static async void SourceRequested(IconBox sender, SourceRequestedEventArgs args)
 #pragma warning restore IDE0060 // Remove unused parameter
    {
-        if (args.Key == null)
+        if (args.Key is null)
        {
            return;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Helpers/IconCacheService.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Helpers/IconCacheService.cs
@ -28,7 +28,7 @@ public sealed class IconCacheService(DispatcherQueue dispatcherQueue)
                var source = IconPathConverter.IconSourceMUX(icon.Icon, false);
                return source;
            }
-            else if (icon.Data != null)
+            else if (icon.Data is not null)
            {
                try
                {
@ -49,7 +49,7 @@ public sealed class IconCacheService(DispatcherQueue dispatcherQueue)

    private async Task<IconSource?> StreamToIconSource(IRandomAccessStreamReference iconStreamRef)
    {
-        if (iconStreamRef == null)
+        if (iconStreamRef is null)
        {
            return null;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Helpers/TrayIconService.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Helpers/TrayIconService.cs
@ -5,8 +5,9 @@
 using System.Diagnostics.CodeAnalysis;
 using System.Runtime.InteropServices;
 using CommunityToolkit.Mvvm.Messaging;
-using Microsoft.CmdPal.Core.ViewModels.Messages;
+using Microsoft.CmdPal.UI.Messages;
 using Microsoft.CmdPal.UI.ViewModels;
+using Microsoft.CmdPal.UI.ViewModels.Messages;
 using Microsoft.UI.Xaml;
 using Windows.Win32;
 using Windows.Win32.Foundation;
@ -49,7 +50,7 @@ internal sealed partial class TrayIconService
    {
        if (showSystemTrayIcon ?? _settingsModel.ShowSystemTrayIcon)
        {
-            if (_window == null)
+            if (_window is null)
            {
                _window = new Window();
                _hwnd = new HWND(WindowNative.GetWindowHandle(_window));
@ -63,7 +64,7 @@ internal sealed partial class TrayIconService
                _originalWndProc = Marshal.GetDelegateForFunctionPointer<WNDPROC>(PInvoke.SetWindowLongPtr(_hwnd, WINDOW_LONG_PTR_INDEX.GWL_WNDPROC, hotKeyPrcPointer));
            }

-            if (_trayIconData == null)
+            if (_trayIconData is null)
            {
                // We need to stash this handle, so it doesn't clean itself up. If
                // explorer restarts, we'll come back through here, and we don't
@ -87,7 +88,7 @@ internal sealed partial class TrayIconService
            // Add the notification icon
            PInvoke.Shell_NotifyIcon(NOTIFY_ICON_MESSAGE.NIM_ADD, in d);

-            if (_popupMenu == null)
+            if (_popupMenu is null)
            {
                _popupMenu = PInvoke.CreatePopupMenu_SafeHandle();
                PInvoke.InsertMenu(_popupMenu, 0, MENU_ITEM_FLAGS.MF_BYPOSITION | MENU_ITEM_FLAGS.MF_STRING, PInvoke.WM_USER + 1, RS_.GetString("TrayMenu_Settings"));
@ -102,7 +103,7 @@ internal sealed partial class TrayIconService

    public void Destroy()
    {
-        if (_trayIconData != null)
+        if (_trayIconData is not null)
        {
            var d = (NOTIFYICONDATAW)_trayIconData;
            if (PInvoke.Shell_NotifyIcon(NOTIFY_ICON_MESSAGE.NIM_DELETE, in d))
@ -111,19 +112,19 @@ internal sealed partial class TrayIconService
            }
        }

-        if (_popupMenu != null)
+        if (_popupMenu is not null)
        {
            _popupMenu.Close();
            _popupMenu = null;
        }

-        if (_largeIcon != null)
+        if (_largeIcon is not null)
        {
            _largeIcon.Close();
            _largeIcon = null;
        }

-        if (_window != null)
+        if (_window is not null)
        {
            _window.Close();
            _window = null;
@ -166,7 +167,7 @@ internal sealed partial class TrayIconService
            // WM_WINDOWPOSCHANGING which is always received on explorer startup sequence.
            case PInvoke.WM_WINDOWPOSCHANGING:
                {
-                    if (_trayIconData == null)
+                    if (_trayIconData is null)
                    {
                        SetupTrayIcon();
                    }
@ -188,7 +189,7 @@ internal sealed partial class TrayIconService
                    {
                        case PInvoke.WM_RBUTTONUP:
                            {
-                                if (_popupMenu != null)
+                                if (_popupMenu is not null)
                                {
                                    PInvoke.GetCursorPos(out var cursorPos);
                                    PInvoke.SetForegroundWindow(_hwnd);
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Helpers/TypedEventHandlerExtensions.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Helpers/TypedEventHandlerExtensions.cs
@ -46,7 +46,7 @@ public static class TypedEventHandlerExtensions
 #pragma warning restore CA1715 // Identifiers should have correct prefix
        where R : DeferredEventArgs
    {
-        if (eventHandler == null)
+        if (eventHandler is null)
        {
            return Task.CompletedTask;
        }
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Helpers/WindowHelper.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Helpers/WindowHelper.cs
@ -13,7 +13,7 @@ internal sealed partial class WindowHelper
        UserNotificationState state;

        // https://learn.microsoft.com/en-us/windows/win32/api/shellapi/ne-shellapi-query_user_notification_state
-        if (Marshal.GetExceptionForHR(NativeMethods.SHQueryUserNotificationState(out state)) == null)
+        if (Marshal.GetExceptionForHR(NativeMethods.SHQueryUserNotificationState(out state)) is null)
        {
            if (state == UserNotificationState.QUNS_RUNNING_D3D_FULL_SCREEN ||
                state == UserNotificationState.QUNS_BUSY ||
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/MainWindow.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/MainWindow.xaml.cs
@ -10,11 +10,12 @@ using ManagedCommon;
 using Microsoft.CmdPal.Common.Helpers;
 using Microsoft.CmdPal.Common.Messages;
 using Microsoft.CmdPal.Common.Services;
-using Microsoft.CmdPal.Core.ViewModels;
 using Microsoft.CmdPal.Core.ViewModels.Messages;
 using Microsoft.CmdPal.UI.Events;
 using Microsoft.CmdPal.UI.Helpers;
+using Microsoft.CmdPal.UI.Messages;
 using Microsoft.CmdPal.UI.ViewModels;
+using Microsoft.CmdPal.UI.ViewModels.Messages;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.PowerToys.Telemetry;
 using Microsoft.UI.Composition;
@ -383,7 +384,7 @@ public sealed partial class MainWindow : WindowEx,

    private void DisposeAcrylic()
    {
-        if (_acrylicController != null)
+        if (_acrylicController is not null)
        {
            _acrylicController.Dispose();
            _acrylicController = null!;
@ -458,7 +459,7 @@ public sealed partial class MainWindow : WindowEx,
            PowerToysTelemetry.Log.WriteEvent(new CmdPalDismissedOnLostFocus());
        }

-        if (_configurationSource != null)
+        if (_configurationSource is not null)
        {
            _configurationSource.IsInputActive = args.WindowActivationState != WindowActivationState.Deactivated;
        }
@ -466,7 +467,7 @@ public sealed partial class MainWindow : WindowEx,

    public void HandleLaunch(AppActivationArguments? activatedEventArgs)
    {
-        if (activatedEventArgs == null)
+        if (activatedEventArgs is null)
        {
            Summon(string.Empty);
            return;
@ -534,7 +535,7 @@ public sealed partial class MainWindow : WindowEx,
        UnregisterHotkeys();

        var globalHotkey = settings.Hotkey;
-        if (globalHotkey != null)
+        if (globalHotkey is not null)
        {
            if (settings.UseLowLevelGlobalHotkey)
            {
@ -564,7 +565,7 @@ public sealed partial class MainWindow : WindowEx,
        {
            var key = commandHotkey.Hotkey;

-            if (key != null)
+            if (key is not null)
            {
                if (settings.UseLowLevelGlobalHotkey)
                {
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/Messages/HotkeySummonMessage.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/Messages/HotkeySummonMessage.cs
@ -2,7 +2,7 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.

-namespace Microsoft.CmdPal.Core.ViewModels.Messages;
+namespace Microsoft.CmdPal.UI.Messages;

 public record HotkeySummonMessage(string CommandId, IntPtr Hwnd)
 {
--- a/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/Messages/SettingsWindowClosedMessage.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.Core.ViewModels/Messages/SettingsWindowClosedMessage.cs
@ -2,7 +2,7 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.

-namespace Microsoft.CmdPal.Core.ViewModels.Messages;
+namespace Microsoft.CmdPal.UI.Messages;

 public record SettingsWindowClosedMessage
 {
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Pages/LoadingPage.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Pages/LoadingPage.xaml.cs
@ -24,7 +24,7 @@ public sealed partial class LoadingPage : Page
    protected override void OnNavigatedTo(NavigationEventArgs e)
    {
        if (e.Parameter is ShellViewModel shellVM
-            && shellVM.LoadCommand != null)
+            && shellVM.LoadCommand is not null)
        {
            // This will load the built-in commands, then navigate to the main page.
            // Once the mainpage loads, we'll start loading extensions.
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Pages/ShellPage.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Pages/ShellPage.xaml.cs
@ -9,6 +9,7 @@ using ManagedCommon;
 using Microsoft.CmdPal.Core.ViewModels;
 using Microsoft.CmdPal.Core.ViewModels.Messages;
 using Microsoft.CmdPal.UI.Events;
+using Microsoft.CmdPal.UI.Messages;
 using Microsoft.CmdPal.UI.Settings;
 using Microsoft.CmdPal.UI.ViewModels;
 using Microsoft.CommandPalette.Extensions;
@ -17,7 +18,6 @@ using Microsoft.PowerToys.Telemetry;
 using Microsoft.UI.Dispatching;
 using Microsoft.UI.Input;
 using Microsoft.UI.Xaml.Controls;
-using Microsoft.UI.Xaml.Controls.Primitives;
 using Microsoft.UI.Xaml.Input;
 using Microsoft.UI.Xaml.Media.Animation;
 using DispatcherQueue = Microsoft.UI.Dispatching.DispatcherQueue;
@ -171,7 +171,7 @@ public sealed partial class ShellPage : Microsoft.UI.Xaml.Controls.Page,
    // This gets called from the UI thread
    private async Task HandleConfirmArgsOnUiThread(IConfirmationArgs? args)
    {
-        if (args == null)
+        if (args is null)
        {
            return;
        }
@ -236,12 +236,13 @@ public sealed partial class ShellPage : Microsoft.UI.Xaml.Controls.Page,

    public void OpenSettings()
    {
-        if (_settingsWindow == null)
+        if (_settingsWindow is null)
        {
            _settingsWindow = new SettingsWindow();
        }

        _settingsWindow.Activate();
+        _settingsWindow.BringToFront();
    }

    public void Receive(ShowDetailsMessage message)
@ -323,7 +324,7 @@ public sealed partial class ShellPage : Microsoft.UI.Xaml.Controls.Page,
                // command from our list of toplevel commands.
                var tlcManager = App.Current.Services.GetService<TopLevelCommandManager>()!;
                var topLevelCommand = tlcManager.LookupCommand(commandId);
-                if (topLevelCommand != null)
+                if (topLevelCommand is not null)
                {
                    var command = topLevelCommand.CommandViewModel.Model.Unsafe;
                    var isPage = command is not IInvokableCommand;
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/PowerToysRootPageService.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/PowerToysRootPageService.cs
@ -100,7 +100,7 @@ internal sealed class PowerToysRootPageService : IRootPageService
            _activeExtension = extension;

            var extensionWinRtObject = _activeExtension?.GetExtensionObject();
-            if (extensionWinRtObject != null)
+            if (extensionWinRtObject is not null)
            {
                try
                {
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/Settings/SettingsWindow.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/Settings/SettingsWindow.xaml.cs
@ -4,9 +4,10 @@

 using System.Collections.ObjectModel;
 using CommunityToolkit.Mvvm.Messaging;
-using Microsoft.CmdPal.Core.ViewModels.Messages;
 using Microsoft.CmdPal.UI.Helpers;
+using Microsoft.CmdPal.UI.Messages;
 using Microsoft.CmdPal.UI.ViewModels;
+using Microsoft.CmdPal.UI.ViewModels.Messages;
 using Microsoft.UI.Windowing;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
@ -104,6 +105,8 @@ public sealed partial class SettingsWindow : WindowEx,
    private void Window_Closed(object sender, WindowEventArgs args)
    {
        WeakReferenceMessenger.Default.Send<SettingsWindowClosedMessage>();
+
+        WeakReferenceMessenger.Default.UnregisterAll(this);
    }

    private void PaneToggleBtn_Click(object sender, RoutedEventArgs e)
--- a/src/modules/cmdpal/Microsoft.CmdPal.UI/ToastWindow.xaml.cs
+++ b/src/modules/cmdpal/Microsoft.CmdPal.UI/ToastWindow.xaml.cs
@ -6,8 +6,8 @@ using CommunityToolkit.Mvvm.Messaging;
 using CommunityToolkit.WinUI;
 using ManagedCommon;
 using Microsoft.CmdPal.Core.ViewModels;
-using Microsoft.CmdPal.Core.ViewModels.Messages;
 using Microsoft.CmdPal.UI.Helpers;
+using Microsoft.CmdPal.UI.ViewModels.Messages;
 using Microsoft.UI.Dispatching;
 using Microsoft.UI.Windowing;
 using Windows.Win32;
--- a/src/modules/cmdpal/Tests/Microsoft.CmdPal.Ext.Calc.UnitTests/NumberTranslatorTests.cs
+++ b/src/modules/cmdpal/Tests/Microsoft.CmdPal.Ext.Calc.UnitTests/NumberTranslatorTests.cs
@ -18,8 +18,8 @@ public class NumberTranslatorTests
    public void Create_ThrowError_WhenCalledNullOrEmpty(string sourceCultureName, string targetCultureName)
    {
        // Arrange
-        CultureInfo sourceCulture = sourceCultureName != null ? new CultureInfo(sourceCultureName) : null;
-        CultureInfo targetCulture = targetCultureName != null ? new CultureInfo(targetCultureName) : null;
+        CultureInfo sourceCulture = sourceCultureName is not null ? new CultureInfo(sourceCultureName) : null;
+        CultureInfo targetCulture = targetCultureName is not null ? new CultureInfo(targetCultureName) : null;

        // Act
        Assert.ThrowsException<ArgumentNullException>(() => NumberTranslator.Create(sourceCulture, targetCulture));
--- a/src/modules/cmdpal/Tests/Microsoft.CmdPal.Ext.TimeDate.UnitTests/TimeAndDateHelperTests.cs
+++ b/src/modules/cmdpal/Tests/Microsoft.CmdPal.Ext.TimeDate.UnitTests/TimeAndDateHelperTests.cs
@ -45,7 +45,7 @@ public class TimeAndDateHelperTests
        var result = TimeAndDateHelper.GetCalendarWeekRule(setting);

        // Assert
-        if (valueExpected == null)
+        if (valueExpected is null)
        {
            // falls back to system setting.
            Assert.AreEqual(DateTimeFormatInfo.CurrentInfo.CalendarWeekRule, result);
@ -72,7 +72,7 @@ public class TimeAndDateHelperTests
        var result = TimeAndDateHelper.GetFirstDayOfWeek(setting);

        // Assert
-        if (valueExpected == null)
+        if (valueExpected is null)
        {
            // falls back to system setting.
            Assert.AreEqual(DateTimeFormatInfo.CurrentInfo.FirstDayOfWeek, result);
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/AllAppsPage.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/AllAppsPage.cs
@ -2,16 +2,12 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.

-using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
-using System.Numerics;
-using System.Runtime.CompilerServices;
 using System.Threading;
 using System.Threading.Tasks;
 using ManagedCommon;
-using Microsoft.CmdPal.Ext.Apps.Commands;
 using Microsoft.CmdPal.Ext.Apps.Programs;
 using Microsoft.CmdPal.Ext.Apps.Properties;
 using Microsoft.CmdPal.Ext.Apps.State;
@ -145,7 +141,7 @@ public sealed partial class AllAppsPage : ListPage
        */
        var existingAppItem = allApps.FirstOrDefault(f => f.AppIdentifier == e.AppIdentifier);

-        if (existingAppItem != null)
+        if (existingAppItem is not null)
        {
            var appListItem = new AppListItem(existingAppItem, true, e.IsPinned);

--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/AppCache.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/AppCache.cs
@ -4,7 +4,6 @@

 using System;
 using System.Collections.Generic;
-using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.CmdPal.Ext.Apps.Programs;
@ -66,7 +65,7 @@ public sealed partial class AppCache : IDisposable

    private void UpdateUWPIconPath(Theme theme)
    {
-        if (_packageRepository != null)
+        if (_packageRepository is not null)
        {
            foreach (UWPApplication app in _packageRepository)
            {
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/AppListItem.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/AppListItem.cs
@ -72,7 +72,7 @@ internal sealed partial class AppListItem : ListItem
            try
            {
                var stream = await ThumbnailHelper.GetThumbnail(_app.ExePath, true);
-                if (stream != null)
+                if (stream is not null)
                {
                    heroImage = IconInfo.FromStream(stream);
                }
@ -106,7 +106,7 @@ internal sealed partial class AppListItem : ListItem
            try
            {
                var stream = await ThumbnailHelper.GetThumbnail(_app.ExePath);
-                if (stream != null)
+                if (stream is not null)
                {
                    var data = new IconData(RandomAccessStreamReference.CreateFromStream(stream));
                    icon = new IconInfo(data, data);
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Programs/AppxPackageHelper.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Programs/AppxPackageHelper.cs
@ -6,9 +6,7 @@ using System;
 using System.Collections.Generic;
 using ManagedCommon;
 using Microsoft.CmdPal.Ext.Apps.Utils;
-using Microsoft.UI.Xaml.Controls;
 using Windows.Win32;
-using Windows.Win32.Foundation;
 using Windows.Win32.Storage.Packaging.Appx;
 using Windows.Win32.System.Com;

@ -51,14 +49,14 @@ public static class AppxPackageHelper
                {
                    result.Add((IntPtr)manifestApp);
                }
-                else if (manifestApp != null)
+                else if (manifestApp is not null)
                {
                    manifestApp->Release();
                }
            }
            catch (Exception ex)
            {
-                if (manifestApp != null)
+                if (manifestApp is not null)
                {
                    manifestApp->Release();
                }
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Programs/PackageManagerWrapper.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Programs/PackageManagerWrapper.cs
@ -22,11 +22,11 @@ public class PackageManagerWrapper : IPackageManager
    {
        var user = WindowsIdentity.GetCurrent().User;

-        if (user != null)
+        if (user is not null)
        {
            var pkgs = _packageManager.FindPackagesForUser(user.Value);

-            return pkgs.Select(PackageWrapper.GetWrapperFromPackage).Where(package => package != null);
+            return pkgs.Select(PackageWrapper.GetWrapperFromPackage).Where(package => package is not null);
        }

        return Enumerable.Empty<IPackage>();
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Programs/UWP.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Programs/UWP.cs
@ -11,9 +11,7 @@ using System.Threading.Tasks;
 using System.Xml.Linq;
 using ManagedCommon;
 using Microsoft.CmdPal.Ext.Apps.Utils;
-using Microsoft.CommandPalette.Extensions.Toolkit;
 using Windows.Win32;
-using Windows.Win32.Foundation;
 using Windows.Win32.Storage.Packaging.Appx;
 using Windows.Win32.System.Com;

@ -99,7 +97,7 @@ public partial class UWP
    private static string[] XmlNamespaces(string path)
    {
        var z = XDocument.Load(path);
-        if (z.Root != null)
+        if (z.Root is not null)
        {
            var namespaces = z.Root.Attributes().
                Where(a => a.IsNamespaceDeclaration).
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Programs/UWPApplication.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Programs/UWPApplication.cs
@ -308,7 +308,7 @@ public class UWPApplication : IProgram
    private bool SetScaleIcons(string path, string colorscheme, bool highContrast = false)
    {
        var extension = Path.GetExtension(path);
-        if (extension != null)
+        if (extension is not null)
        {
            var end = path.Length - extension.Length;
            var prefix = path.Substring(0, end);
@ -363,7 +363,7 @@ public class UWPApplication : IProgram
    private bool SetTargetSizeIcon(string path, string colorscheme, bool highContrast = false)
    {
        var extension = Path.GetExtension(path);
-        if (extension != null)
+        if (extension is not null)
        {
            var end = path.Length - extension.Length;
            var prefix = path.Substring(0, end);
@ -576,7 +576,7 @@ public class UWPApplication : IProgram

            var group = new DrawingGroup();
            var converted = ColorConverter.ConvertFromString(currentBackgroundColor);
-            if (converted != null)
+            if (converted is not null)
            {
                var color = (Color)converted;
                var brush = new SolidColorBrush(color);
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Programs/Win32Program.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Programs/Win32Program.cs
@ -170,7 +170,7 @@ public partial class Win32Program : IProgram

    public bool QueryEqualsNameForRunCommands(string query)
    {
-        if (query != null && AppType == ApplicationType.RunCommand)
+        if (query is not null && AppType == ApplicationType.RunCommand)
        {
            // Using OrdinalIgnoreCase since this is used internally
            if (!query.Equals(Name, StringComparison.OrdinalIgnoreCase) && !query.Equals(ExecutableName, StringComparison.OrdinalIgnoreCase))
@ -668,7 +668,7 @@ public partial class Win32Program : IProgram
        var paths = new List<string>();
        using (var root = Registry.LocalMachine.OpenSubKey(appPaths))
        {
-            if (root != null)
+            if (root is not null)
            {
                paths.AddRange(GetPathsFromRegistry(root));
            }
@ -676,7 +676,7 @@ public partial class Win32Program : IProgram

        using (var root = Registry.CurrentUser.OpenSubKey(appPaths))
        {
-            if (root != null)
+            if (root is not null)
            {
                paths.AddRange(GetPathsFromRegistry(root));
            }
@ -701,7 +701,7 @@ public partial class Win32Program : IProgram
        {
            using (var key = root.OpenSubKey(subkey))
            {
-                if (key == null)
+                if (key is null)
                {
                    return string.Empty;
                }
@ -743,13 +743,13 @@ public partial class Win32Program : IProgram

        public bool Equals(Win32Program? app1, Win32Program? app2)
        {
-            if (app1 == null && app2 == null)
+            if (app1 is null && app2 is null)
            {
                return true;
            }

-            return app1 != null
-                    && app2 != null
+            return app1 is not null
+                    && app2 is not null
                    && (app1.Name?.ToUpperInvariant(), app1.ExecutableName?.ToUpperInvariant(), app1.FullPath?.ToUpperInvariant())
                    .Equals((app2.Name?.ToUpperInvariant(), app2.ExecutableName?.ToUpperInvariant(), app2.FullPath?.ToUpperInvariant()));
        }
@ -909,7 +909,7 @@ public partial class Win32Program : IProgram
            Parallel.ForEach(paths, source =>
            {
                var program = GetProgramFromPath(source);
-                if (program != null)
+                if (program is not null)
                {
                    programsList.Add(program);
                }
@ -919,7 +919,7 @@ public partial class Win32Program : IProgram
            Parallel.ForEach(runCommandPaths, source =>
            {
                var program = GetRunCommandProgramFromPath(source);
-                if (program != null)
+                if (program is not null)
                {
                    runCommandProgramsList.Add(program);
                }
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Storage/FileSystemWatcherWrapper.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Storage/FileSystemWatcherWrapper.cs
@ -19,7 +19,7 @@ public sealed partial class FileSystemWatcherWrapper : FileSystemWatcher, IFileS
        get => this.Filters;
        set
        {
-            if (value != null)
+            if (value is not null)
            {
                foreach (var filter in value)
                {
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Storage/Win32ProgramRepository.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Storage/Win32ProgramRepository.cs
@ -10,7 +10,6 @@ using System.Diagnostics.CodeAnalysis;
 using System.IO;
 using System.Threading.Tasks;
 using ManagedCommon;
-using Microsoft.CmdPal.Ext.Apps.Programs;
 using Win32Program = Microsoft.CmdPal.Ext.Apps.Programs.Win32Program;

 namespace Microsoft.CmdPal.Ext.Apps.Storage;
@ -53,7 +52,7 @@ internal sealed partial class Win32ProgramRepository : ListRepository<Programs.W
                if (!string.IsNullOrEmpty(appPath))
                {
                    Win32Program? app = Win32Program.GetAppFromPath(appPath);
-                    if (app != null)
+                    if (app is not null)
                    {
                        Add(app);
                        _isDirty = true;
@ -137,7 +136,7 @@ internal sealed partial class Win32ProgramRepository : ListRepository<Programs.W
        }

        // To remove the old app which has been renamed and to add the new application.
-        if (oldApp != null)
+        if (oldApp is not null)
        {
            if (string.IsNullOrWhiteSpace(oldApp.Name) || string.IsNullOrWhiteSpace(oldApp.ExecutableName) || string.IsNullOrWhiteSpace(oldApp.FullPath))
            {
@ -149,7 +148,7 @@ internal sealed partial class Win32ProgramRepository : ListRepository<Programs.W
            }
        }

-        if (newApp != null)
+        if (newApp is not null)
        {
            Add(newApp);
            _isDirty = true;
@ -177,7 +176,7 @@ internal sealed partial class Win32ProgramRepository : ListRepository<Programs.W
            if (extension.Equals(LnkExtension, StringComparison.OrdinalIgnoreCase))
            {
                app = GetAppWithSameLnkFilePath(path);
-                if (app == null)
+                if (app is null)
                {
                    // Cancelled links won't have a resolved path.
                    app = GetAppWithSameNameAndExecutable(Path.GetFileNameWithoutExtension(path), Path.GetFileName(path));
@ -197,7 +196,7 @@ internal sealed partial class Win32ProgramRepository : ListRepository<Programs.W
            Logger.LogError(ex.Message);
        }

-        if (app != null)
+        if (app is not null)
        {
            Remove(app);
            _isDirty = true;
@ -244,7 +243,7 @@ internal sealed partial class Win32ProgramRepository : ListRepository<Programs.W
        if (!Path.GetExtension(path).Equals(UrlExtension, StringComparison.OrdinalIgnoreCase) && !Path.GetExtension(path).Equals(LnkExtension, StringComparison.OrdinalIgnoreCase))
        {
            Programs.Win32Program? app = Programs.Win32Program.GetAppFromPath(path);
-            if (app != null)
+            if (app is not null)
            {
                Add(app);
                _isDirty = true;
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Utils/ComFreeHelper.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Utils/ComFreeHelper.cs
@ -2,7 +2,6 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.

-using System;
 using Windows.Win32;
 using Windows.Win32.Foundation;
 using Windows.Win32.System.Com;
@ -27,7 +26,7 @@ public static class ComFreeHelper
    public static unsafe void ComObjectRelease<T>(T* comPtr)
        where T : unmanaged
    {
-        if (comPtr != null)
+        if (comPtr is not null)
        {
            ((IUnknown*)comPtr)->Release();
        }
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Utils/ShellLinkHelper.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Utils/ShellLinkHelper.cs
@ -3,8 +3,6 @@
 // See the LICENSE file in the project root for more information.

 using System;
-using System.Text;
-using ManagedCommon;
 using Windows.Win32;
 using Windows.Win32.Foundation;
 using Windows.Win32.System.Com;
@ -37,7 +35,7 @@ public class ShellLinkHelper : IShellLinkHelper
        IPersistFile* persistFile = null;
        Guid iid = typeof(IPersistFile).GUID;
        ((IUnknown*)link)->QueryInterface(&iid, (void**)&persistFile);
-        if (persistFile != null)
+        if (persistFile is not null)
        {
            using var persistFileHandle = new SafeComHandle((IntPtr)persistFile);
            try
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Utils/ShellLocalization.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Utils/ShellLocalization.cs
@ -45,7 +45,7 @@ public class ShellLocalization

            var filename = ComFreeHelper.GetStringAndFree(hr, filenamePtr);

-            if (filename == null)
+            if (filename is null)
            {
                return string.Empty;
            }
--- a/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Utils/ThemeHelper.cs
+++ b/src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.Apps/Utils/ThemeHelper.cs
@ -32,7 +32,7 @@ public static class ThemeHelper

        // Retrieve the registry value, which is a DWORD (0 or 1)
        var registryValueObj = Registry.GetValue(registryKey, registryValue, null);
-        if (registryValueObj != null)
+        if (registryValueObj is not null)
        {
            // 0 = Dark mode, 1 = Light mode
            var isLightMode = Convert.ToBoolean((int)registryValueObj, CultureInfo.InvariantCulture);
--- a/Show More
+++ b/Show More