feat(windows): bundle PixelPass viewer

CHANGELOG.md

@@ -4,6 +4,22 @@ All notable changes to PeerSpeak are documented here.
 
 ## [Unreleased]
 
+### Added
+- **The Windows installer now includes the matching PixelPass viewer.** Windows
+  participants can watch a screen share hosted by Linux through the existing
+  PeerSpeak Watch flow without separately installing PixelPass.
+
+### Changed
+- **Windows presents screen sharing as viewer-only.** Watch remains available,
+  while the local share control explains that Windows capture/hosting is not
+  implemented yet instead of starting an unsupported helper mode.
+- **The installer owns both networking rules.** Idempotent PeerSpeak and
+  PixelPass firewall rules are installed together and removed on uninstall.
+
+### Compatibility
+- **Wire-compatible with 0.6.7.** The new Windows helper bundle and UI boundary
+  do not change PeerSpeak or PixelPass wire formats.
+
 ## [0.6.7] — 2026-08-22
 
 ### Changed