Fixed Windows build failure where KSP plugin couldn't be resolved.
Added mavenCentral() to pluginManagement repositories to ensure
plugins like com.google.devtools.ksp can be found on all platforms.
The KSP plugin is published to Maven Central and wasn't being found
on Windows runners because only Sonatype snapshots and Gradle Plugin
Portal were configured.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Enables automatic JDK toolchain resolution from the Foojay API when
a required toolchain version is not installed locally.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>