Add WireSock UI 0.3.12 release notes

[wiresock]

Summary

• add the human-friendly notes required by the immutable release workflow
• document the compact classic/non-UWP Settings layout improvement
• retain package selection, unsigned-artifact, and verification guidance

Verification

• branch build version resolves to 0.3.12
• strict UTF-8, heading, size, and control-character validation passed
• immutable release publication tests passed