feat: closed box with right wall and padded rows

main.go

@@ -737,17 +737,16 @@ func renderBox(head string, groups []logGroup) {
 		}
 	}
 	ts := time.Now().Format("02.01.2006 15:04:05")
-	top := "┌─ " + ts + " "
-	if runeCount(top) < width {
-		top += strings.Repeat("─", width-runeCount(top))
-	} else {
-		width = runeCount(top)
+	base := "┌─ " + ts + " "
+	if width < runeCount(base) {
+		width = runeCount(base)
 	}
-	logRaw(top)
+	// Закрытый бокс: правая стенка у каждой строки.
+	logRaw(base + strings.Repeat("─", width-runeCount(base)) + "┐")
 	for _, line := range lines {
-		logRaw(line)
+		logRaw(line + strings.Repeat(" ", width-runeCount(line)) + "│")
 	}
-	logRaw("└" + strings.Repeat("─", width-1))
+	logRaw("└" + strings.Repeat("─", width-1) + "┘")
 	logRaw("")
 }