Add analyzer and frontend lint guardrails

Infrastructure/PlayerIdentityExtensions.cs

@@ -12,6 +12,11 @@ public static class PlayerIdentityExtensions
     public const string PlayerCookieName = "player";
     public const string AdminClaim = "is_admin";
     public const string AdminPolicy = "AdminOnly";
+    private static readonly Action<ILogger, Exception?> LogUnhandledException =
+        LoggerMessage.Define(
+            LogLevel.Error,
+            new EventId(1001, nameof(LogUnhandledException)),
+            "Unhandled exception");
 
     public static async Task SignInPlayerAsync(HttpContext ctx, Player player)
     {
@@ -40,7 +45,7 @@ public static class PlayerIdentityExtensions
                 var logger = context.RequestServices.GetRequiredService<ILoggerFactory>().CreateLogger("GlobalException");
                 if (feature?.Error != null)
                 {
-                    logger.LogError(feature.Error, "Unhandled exception");
+                    LogUnhandledException(logger, feature.Error);
                 }
 
                 context.Response.StatusCode = StatusCodes.Status500InternalServerError;