Expose Disabled level

level.go

@@ -19,7 +19,9 @@ var (
 	Warning  = Level{3}
 	Error    = Level{4}
 	Critical = Level{5}
-	disabled = Level{6} // It shouldn't be possible to define a message at this level.
+	// It shouldn't be possible to define a message at this level. Filtering at this level should
+	// mean no messages ever get through.
+	Disabled = Level{6}
 )
 
 func (l Level) isNotSet() bool {

reporting-rules.go

@@ -53,7 +53,7 @@ func parseRuleString(s string) (_ Rule, ok bool, _ error) {
 		level, ok, err = levelFromString(ss[1])
 		if !ok {
 			// blah= means disable the name, but just blah means to always include it
-			level = disabled
+			level = Disabled
 		}
 		if err != nil {
 			return nil, false, fmt.Errorf("parsing level %q: %w", ss[1], err)

slog.go

@@ -20,7 +20,7 @@ func toSlogLevel(level Level) (slog.Level, bool) {
 		return slog.LevelError, true
 	case Critical:
 		return slog.LevelError + 1, true
-	case disabled:
+	case Disabled:
 		return slog.LevelDebug - 1, false
 	default:
 		panic(level)