The shared Build & test job OOM-killed (exit 137) with coverage enabled: the
whole-solution Architecture.Tests process instruments both EF migration folders
(~2.59M generated lines vs ~200k authored), ballooning coverlet's in-memory
hit-count arrays past the runner's limit.
Add coverlet.runsettings excluding **/Migrations/*.cs (+ generated/compiler
attributes) and pass it via --settings on the Test step. This cuts the
instrumented surface ~126x (2,510,185 -> 19,963 coverable lines in the
Architecture.Tests process, verified locally) and makes the reported percentage
reflect authored code. Documented in docs/ci-cd.md.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
