bugfixes nov2025 (#3)

* Fix enter misbehaving.
* Cleanup after previous tui implementation.
* Fix race condition and improve logging
* Add filtering of the namespaces by text input in the wizard UI

internal/logger/logger.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"sync"
 	"time"
 )
 
@@ -28,6 +29,7 @@ type Logger struct {
 	level  Level
 	format Format
 	output io.Writer
+	mu     sync.Mutex // Protects concurrent writes to output
 }
 
 type logEntry struct {
@@ -55,6 +57,9 @@ func (l *Logger) log(level Level, msg string, fields map[string]interface{}) {
 
 	levelStr := levelToString(level)
 
+	l.mu.Lock()
+	defer l.mu.Unlock()
+
 	if l.format == FormatJSON {
 		entry := logEntry{
 			Time:    time.Now().Format(time.RFC3339),