<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request
This PR adds three parts of the original big bad global error handler
(error report builder, sanitization and internal tools UI).
### Error Report Generation
- `ErrorReportBuilder`: Produces a detailed, technical report with
system context.
- Comprehensive data: OS version, architecture, culture, app version,
elevation status, etc.
- Exception analysis: Coalesces nested exception messages and HRESULT
details for clearer diagnostics.
<details><summary>Example</summary>
<pre>
This is an error report generated by Windows Command Palette.
If you are seeing this, it means something went a little sideways in the
app.
You can help us fix it by filing a report at
https://aka.ms/powerToysReportBug.
(While you’re at it, give the details below a quick skim — just to make
sure there’s nothing personal you’d prefer not to share. It’s rare, but
sometimes little surprises sneak in.)
============================================================
Summary:
Message: Test exception; thrown from the UI thread
Type: System.NotImplementedException
Source: Microsoft.CmdPal.UI
Time: 2025-08-25 18:54:44.3854569
HRESULT: 0x80004001 (-2147467263)
Context: MainThreadException
Application:
App version: 0.0.1.0
Is elevated: no
Environment:
OS version: Microsoft Windows 10.0.26120
OS architecture: X64
Runtime identifier: win-x64
Framework: .NET 9.0.8
Process architecture: X64
Culture: cs-CZ
UI culture: en-US
Stack Trace:
at
Microsoft.CmdPal.UI.Settings.InternalPage.ThrowPlainMainThreadException_Click(Object
sender, RoutedEventArgs e)
at
WinRT._EventSource_global__Microsoft_UI_Xaml_RoutedEventHandler.EventState.<GetEventInvoke>b__1_0(Object
sender, RoutedEventArgs e)
at ABI.Microsoft.UI.Xaml.RoutedEventHandler.Do_Abi_Invoke(IntPtr
thisPtr, IntPtr sender, IntPtr e)
------------------ Full Exception Details ------------------
System.NotImplementedException: Test exception; thrown from the UI
thread
at
Microsoft.CmdPal.UI.Settings.InternalPage.ThrowPlainMainThreadException_Click(Object
sender, RoutedEventArgs e)
at
WinRT._EventSource_global__Microsoft_UI_Xaml_RoutedEventHandler.EventState.<GetEventInvoke>b__1_0(Object
sender, RoutedEventArgs e)
at ABI.Microsoft.UI.Xaml.RoutedEventHandler.Do_Abi_Invoke(IntPtr
thisPtr, IntPtr sender, IntPtr e)
============================================================
</pre>
</details>
Real-world example: #41362
### PII Sanitization Framework
- `ErrorReportSanitizer`: Multi-layer sanitization pipeline for
sensitive data.
- Nine specialized rule providers:
- `PiiRuleProvider`: Personally identifiable information (emails, phone
numbers, SSNs).
- `ProfilePathAndUsernameRuleProvider`: Windows user profiles and
usernames.
- `NetworkRuleProvider`: IP addresses, MAC addresses, network
identifiers.
- `SecretKeyValueRulesProvider`: API keys, tokens, passwords in
key/value formats.
- `FilenameMaskRuleProvider`: Sensitive file paths and extensions.
- `UrlRuleProvider`: URLs and web addresses.
- `TokenRuleProvider`: JWT and other auth tokens.
- `ConnectionStringRuleProvider`: Database connection strings.
- `EnvironmentPropertiesRuleProvider`: Environment variables and system
properties.
### Internals Tools Page
A page in settings available in non-CI-builds:
<img width="1305" height="745" alt="image"
src="https://github.com/user-attachments/assets/3145ecfd-997f-491d-8c8a-6096634b6045"
/>
<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist
- [ ] Closes: #xxx
<!-- - [ ] Closes: #yyy (add separate lines for additional resolved
issues) -->
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx
<!-- Provide a more detailed description of the PR, other things fixed,
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments
<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
related to some #40113 work
The extension SDK shouldn't rely on a preview version of the Windows
SDK. It should use the stable one.
Also moves some messages around that we didn't need
_targets #40504_
Major refactoring for #40113
This moves a large swath of the codebase to a `.Core` project. "Core"
doesn't have any explicit dependencies on "extensions", settings or the
current `MainListPage`. It's just a filterable list of stuff. This
should let us make this component a bit more reusable.
This is half of a PR. As I did this, I noticed a particular bit of code
for TopLevelVViewModels and CommandPaletteHost that was _very rough_.
Solving it in this PR would make "move everything to a new project" much
harder to review. So I'm submitting two PRs simultaneously, so we can
see the changes separately, then merge together.
Windows Command Palette ("CmdPal") is the next iteration of PowerToys Run. With extensibility at its core, the Command Palette is your one-stop launcher to start _anything_.
By default, CmdPal is bound to <kbd>Win+Alt+Space</kbd>.


----
This brings the current preview version of CmdPal into the upstream PowerToys repo. There are still lots of bugs to work out, but it's reached the state we're ready to start sharing it with the world. From here, we can further collaborate with the community on the features that are important, and ensuring that we've got a most robust API to enable developers to build whatever extensions they want.
Most of the built-in PT Run modules have already been ported to CmdPal's extension API. Those include:
* Installed apps
* Shell commands
* File search (powered by the indexer)
* Windows Registry search
* Web search
* Windows Terminal Profiles
* Windows Services
* Windows settings
There are a couple new extensions built-in
* You can now search for packages on `winget` and install them right from the palette. This also powers searching for extensions for the palette
* The calculator has an entirely new implementation. This is currently less feature complete than the original PT Run one - we're looking forward to updating it to be more complete for future ingestion in Windows
* "Bookmarks" allow you to save shortcuts to files, folders, and webpages as top-level commands in the palette.
We've got a bunch of other samples too, in this repo and elsewhere
### PowerToys specific notes
CmdPal will eventually graduate out of PowerToys to live as its own application, which is why it's implemented just a little differently than most other modules. Enabling CmdPal will install its `msix` package.
The CI was minorly changed to support CmdPal version numbers independent of PowerToys itself. It doesn't make sense for us to start CmdPal at v0.90, and in the future, we want to be able to rev CmdPal independently of PT itself.
Closes#3200, closes#3600, closes#7770, closes#34273, closes#36471, closes#20976, closes#14495
-----
TODOs et al
**Blocking:**
- [ ] Images and descriptions in Settings and OOBE need to be properly defined, as mentioned before
- [ ] Niels is on it
- [x] Doesn't start properly from PowerToys unless the fix PR is merged.
- https://github.com/zadjii-msft/PowerToys/pull/556 merged
- [x] I seem to lose focus a lot when I press on some limits, like between the search bar and the results.
- This is https://github.com/zadjii-msft/PowerToys/issues/427
- [x] Turned off an extension like Calculator and it was still working.
- Need to get rid of that toggle, it doesn't do anything currently
- [x] `ListViewModel.<FetchItems>` crash
- Pretty confident that was fixed in https://github.com/zadjii-msft/PowerToys/pull/553
**Not blocking / improvements:**
- Show the shortcut through settings, as mentioned before, or create a button that would open CmdPalette settings.
- When PowerToys starts, CmdPalette is always shown if enabled. That's weird when just starting PowerToys/ logging in to the computer with PowerToys auto-start activated. I think this should at least be a setting.
- Needing to double press a result for it to do the default action seems quirky. If one is already selected, I think just pressing should be enough for it to do the action.
- This is currently a setting, though we're thinking of changing the setting even more: https://github.com/zadjii-msft/PowerToys/issues/392
- There's no URI extension. Was surprised when typing a URL that it only proposed a web search.
- [x] There's no System commands extension. Was expecting to be able to quickly restart the computer by typing restart but it wasn't there.
- This is in PR https://github.com/zadjii-msft/PowerToys/pull/452
---------
Co-authored-by: joadoumie <98557455+joadoumie@users.noreply.github.com>
Co-authored-by: Jordi Adoumie <jordiadoumie@microsoft.com>
Co-authored-by: Mike Griese <zadjii@gmail.com>
Co-authored-by: Niels Laute <niels.laute@live.nl>
Co-authored-by: Michael Hawker <24302614+michael-hawker@users.noreply.github.com>
Co-authored-by: Stefan Markovic <57057282+stefansjfw@users.noreply.github.com>
Co-authored-by: Seraphima <zykovas91@gmail.com>
Co-authored-by: Jaime Bernardo <jaime@janeasystems.com>
Co-authored-by: Kristen Schau <47155823+krschau@users.noreply.github.com>
Co-authored-by: Eric Johnson <ericjohnson327@gmail.com>
Co-authored-by: Ethan Fang <ethanfang@microsoft.com>
Co-authored-by: Yu Leng (from Dev Box) <yuleng@microsoft.com>
Co-authored-by: Clint Rutkas <clint@rutkas.com>