Calls UseSvSimSerilog("svsim-content") right after CreateBuilder and
wraps Main in try/catch/finally. No environment gate needed —
ContentServer has no test-suite path. The existing manual request-log
middleware (uses ILogger<Program>) now flows through Serilog
automatically; swapping it for UseSerilogRequestLogging() is a
follow-up per the spec.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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