find_sln locates a .sln in the working folder; build_sln locates MSBuild
via vswhere and builds the solution's default config (compiles the UE game
module for Unreal projects), streaming output as build-log events. A build
overlay shows the live log with error/warning coloring and a status. Wired
into Tools (Ctrl+B) and the Working-folder right-click menu when a .sln is
found. New strings translated.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>