## Summary of the Pull Request
This PR introduces a new method for determining the default browser
using the Windows Shell API. The new provider selects the browser
associated with the HTTPS protocol (falling back to HTTP if necessary).
The original implementation is retained as a fallback for now, and the
codebase is prepared for future extensions (e.g., manual default-browser
selection).
As a flyby, it also fixes an issue where commands continued showing the
previous browser name if the user changed their default browser while
the Command Palette was running.
## One-liner for change log
Fixed default browser selection in the Web Search built-in extension.
<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist
- [x] Closes: #42343
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [x] **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
## Summary of the Pull Request
This PR ensures that the list of recent searches in the Web Search
extension is updated immediately after a new item is added or when
settings controlling the number of items are changed.
- Refactors the Web Search extension history to keep it in memory after
being loaded at startup
- Adds an event to notify subscribers when the history changes
- Implements `IDisposable` to ensure that `WebSearchListPage`
unsubscribes from the event
- Moves responsibility for creating all list items to single class
(`WebSearchListPage`)
- Updated unit tests
-
## PR Checklist
- [x] Closes: #40548
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [x] **Tests:** Added/updated and all pass
- [x] **Localization:** All end-user-facing strings can be localized
- [x] **Dev docs:** nothing
- [x] **New binaries:** none
- [x] **Documentation updated:** nope
<!-- 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
