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## Summary of the Pull Request
This PR adds a new default option to the All Apps extension settings.
- Adds an explicit "Default (n)" option to the choices list as the
default. This option is not tied to a concrete number of items, allowing
the value to change in the future.
- Fixes backward compatibility for users who installed the extension
when `"0"` was accidentally used as the default search result limit
(d07f40eec3). Existing `"0"` values are now treated as "use default
(10)" instead of producing zero results.
- Renames the intentional "0 results" setting value from `"0"` to
`"none"` so it can be clearly distinguished from the previous accidental
default.
- Moves result-limit parsing from `AllAppsCommandProvider` into
`AllAppsSettings`, exposing a parsed `int?` property instead of a raw
string.
- Adds `IgnoreUnknownValue` to `ChoiceSetSetting` so unrecognized stored
values (such as the old `"0"`) are silently ignored on load, preserving
the initialized default.
- Without this the drop-down value in the adaptive card shows as empty.
<img width="842" height="226" alt="image"
src="https://github.com/user-attachments/assets/ae79f173-2e81-43d8-9103-c548ff6e0dc1"
/>
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## PR Checklist
- [ ] Closes: #xxx
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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
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## Detailed Description of the Pull Request / Additional comments
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wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
Command Palette Extension Toolkit
The C# toolkit for building your own extension for the Command Palette.
The quickest way to get started building an extension is to install the Command Palette, and use the "Create a new extension" command. That will set up a project for you, with the packaging, dependencies, and basic program structure ready to go.
To view the full docs, you can head over to our docs site
There are samples of just about everything you can do in the samples project. Head over there to see basic usage of the APIs.