Health Endpoint Monitoring Generator

[GenerateHealthEndpoint] creates a typed HealthEndpoint<TContext> factory from static check methods.

[GenerateHealthEndpoint(typeof(FulfillmentHealthSnapshot), FactoryMethodName = "Create", EndpointName = "fulfillment-health")]
public static partial class FulfillmentHealthEndpoint
{
    [HealthEndpointCheck("database", Order = 1)]
    private static HealthEndpointCheckResult CheckDatabase(FulfillmentHealthSnapshot snapshot)
        => snapshot.DatabaseOnline
            ? HealthEndpointCheckResult.HealthyCheck("database")
            : HealthEndpointCheckResult.UnhealthyCheck("database", "offline");
}

The generated factory is parameterless, so applications can register it in IServiceCollection and inject the endpoint into hosted services, readiness checks, or ASP.NET Core route handlers.

Diagnostics:

PKHEM001: host type must be partial.
PKHEM002: at least one health check is required.
PKHEM003: health check signature is invalid.

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Health Endpoint Monitoring Generator