Prevent organization-level overrides with GitHub Advanced Security enforcement, then verify configuration scope and repository coverage before rollout.
Use .NET 11 to run dotnet package update –vulnerable with TreatWarningsAsErrors, then verify the dependency diff under your full restore and test policy.
Pin the .NET 11 build-time OpenAPI host environment in CI, isolate generated contracts, compare drift, and block development-only endpoint leaks.
Audit the Configuration environment variable, pin every .NET CI command, and verify build, test, package, and publish handoffs before adopting .NET 11.
Make .NET 11 SDK container publishes reproducible with SOURCE_DATE_EPOCH, verify identical registry digests, and diagnose legitimate input drift.
Inventory every self-hosted runner, query version-specific deprecation deadlines, and replace stale images before GitHub enforcement begins.
Audit JavaScript actions used by your .NET CI, force Node.js 24 across the workflow graph, and clear self-hosted runner blockers before September 23.
