- Sync internal theme state and notify PowerDisplay on manual override (hotkey) in LightSwitchStateManager.
- Add SaveSettings() in LightSwitchViewModel and call it on relevant property changes to ensure immediate settings persistence.
- Clear profile selection and update settings if a configured profile no longer exists, preventing invalid references.
- Update expect.txt with new recognized keywords.
- Use shared constants for LightSwitch theme event names in both C++ and C# to ensure cross-module consistency.
- Replace "Brightness update rate" with "Monitor refresh delay" setting in PowerDisplay; user can now configure delay (1–30s) after display changes before monitor refresh.
- Update UI and resources to reflect new setting and remove old references.
- MainViewModel now uses the configurable delay instead of a hardcoded value.
- Improves user control and reliability of monitor detection after hot-plug events.
<!-- 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
Introduces a new mode that will have Light Switch follow Windows Night
Light.
<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist
- [x] Closes: https://github.com/microsoft/PowerToys/issues/42457
- [x] **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
- [x] **Localization:** All end-user-facing strings can be localized
- [ ] **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
Strictly follows the state of Night Light. When NL is on, LS will be
switch to dark mode and when NL is off, LS will switch to light mode
(with respect to the users system/app selection).
<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
Turn on Follow Night Light mode
Change night light!
## Notes
Introduced `WindowParser` to parse `windowN` segments for PIP/PBP
capabilities in MCCS strings. Added new data models (`WindowCapability`,
`WindowArea`, `WindowSize`) to represent parsed window data. Updated
`MccsCapabilitiesParser` to handle `windowN` segments and added unit
tests for various configurations.
Refactored brightness control in `DdcCiController` to exclusively use
VCP code `0x10`, removing high-level API methods. Updated `DdcCiNative`
to streamline brightness operations.
Revised `LightSwitchListener` and `LightSwitchStateManager` to use
separate light/dark theme events, eliminating race conditions. Removed
registry-based theme detection logic.
Enhanced `VcpCodeNames` with additional VCP codes and improved
categorization. Updated documentation and architecture diagrams to
reflect these changes. Removed unused legacy methods and improved
logging and error handling.
<!-- 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 introduces new UI to allow the users to manually enter their
lat/long.
<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist
- [x] Closes: #42429
- [x] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [x] **Localization:** All end-user-facing strings can be localized
- [x] **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:
#[5979](https://github.com/MicrosoftDocs/windows-dev-docs-pr/pull/5979)
---------
Co-authored-by: Niels Laute <niels.laute@live.nl>
