Mssqllocaldb -

She ran the pipeline. Green. Beautiful, unbroken green. The build agent’s disk footprint? 400 MB for the LocalDB binaries. No services left running. No leftovers. Just a clean, ephemeral, perfect database that lived and died inside the test run.

She wrote a connection string that looked like heaven: Server=(localdb)\CodeCraftBuild;Integrated Security=true;Database=WidgetMetrics_Test; mssqllocaldb

That night, Lena dreamed in deadlocks.