Initial commit: standalone quiz-testing system

Full-stack F# (Domain/Server/Client via Fable+Elmish+Feliz), PostgreSQL
persistence via Dapper, Docker Compose deployment. Student quiz-taking flow
with time-limit enforcement and focus-loss tracking, Teacher question bank
and quiz builder with results analytics, Admin user management.

tests/Domain.Tests/Program.fs

@@ -0,0 +1,4 @@
+module Program
+
+[<EntryPoint>]
+let main _ = 0