v0.20.0 mtls hardening, fail-closed config, startup warnings, sink fixes

internal/sink/null/null.go

@@ -6,6 +6,7 @@ import (
 	"sync/atomic"
 	"time"
 
+	"logwisp/internal/config"
 	"logwisp/internal/core"
 	"logwisp/internal/plugin"
 	"logwisp/internal/session"
@@ -49,6 +50,9 @@ func NewNullSinkPlugin(
 	logger *log.Logger,
 	proxy *session.Proxy,
 ) (sink.Sink, error) {
+	if err := config.Scan(configMap, &config.NullSinkOptions{}); err != nil {
+		return nil, fmt.Errorf("failed to parse config: %w", err)
+	}
 	ns := &NullSink{
 		id:     id,
 		proxy:  proxy,
@@ -143,4 +147,4 @@ func (ns *NullSink) processLoop(ctx context.Context) {
 			return
 		}
 	}
-}
+}