MEIER-323: Suppress default ASP.NET Core request logs in favor of Serilog middleware

[andymeierdev]

Summary

Health check logs (Request starting / Request finished for /health) were still appearing in Seq despite the UseSerilogRequestLogging filter added in #81. This is because those logs come from ASP.NET Core's built-in Microsoft.AspNetCore.Hosting.Diagnostics logger, which fires independently of the Serilog request logging middleware.

Fix

Added .MinimumLevel.Override("Microsoft.AspNetCore", LogEventLevel.Warning) to the Serilog configuration. This suppresses all Information-level logs from the Microsoft.AspNetCore namespace (the verbose "Request starting"/"Request finished" pairs), leaving UseSerilogRequestLogging as the sole request logger. Since that middleware already drops /health to Verbose, health checks are now fully silent.

Validation

• dotnet build — zero warnings/errors
• All 61 tests pass (./fake.sh Test)

[github-actions]

🍹 preview on andymeier/prod

Pulumi report

View in Pulumi Cloud

  Previewing update (prod)

View Live: https://app.pulumi.com/meiermade/andymeier/prod/previews/7060ba9e-34b2-49f0-99d5-4f39403df2f1

pulumi:pulumi:Stack: (same)
  [urn=urn:pulumi:prod::andymeier::pulumi:pulumi:Stack::andymeier-prod]
  ~ docker-build:index:Image: (update)
      [id=sha256:4220b7870863d07b1de96b565c6d5b26306a51590b5d515cb44734e64b92fa6a]
      [urn=urn:pulumi:prod::andymeier::docker-build:index:Image::andymeier]
    - contextHash: "ffb9077bedc1d0cd2feaa7d73294bd1681c024a1a99666dd717535887cb5b948"
  ~ kubernetes:apps/v1:Deployment: (update)
      [id=andymeier/app]
      [urn=urn:pulumi:prod::andymeier::kubernetes:apps/v1:Deployment::app]
    ~ spec: {
        ~ template: {
            ~ spec: {
                ~ containers: [
                    ~ [0]: {
                            ~ image: "us-east1-docker.pkg.dev/meiermade-platform/platform/andymeier:latest@sha256:77a0d75a144d07f78e41e9bca5cc639e8229bc6cdef35103c5cc72a0cf7b75a4" => [unknown]
                          }
                  ]
              }
          }
      }
Resources:
  ~ 2 to update
  14 unchanged