feat: add trace log level (#10650)

reduce prompt log to trace level

logutil/logutil.go

@@ -0,0 +1,29 @@
+package logutil
+
+import (
+	"io"
+	"log/slog"
+	"path/filepath"
+)
+
+const LevelTrace slog.Level = -8
+
+func NewLogger(w io.Writer, level slog.Level) *slog.Logger {
+	return slog.New(slog.NewTextHandler(w, &slog.HandlerOptions{
+		Level:     level,
+		AddSource: true,
+		ReplaceAttr: func(_ []string, attr slog.Attr) slog.Attr {
+			switch attr.Key {
+			case slog.LevelKey:
+				switch attr.Value.Any().(slog.Level) {
+				case LevelTrace:
+					attr.Value = slog.StringValue("TRACE")
+				}
+			case slog.SourceKey:
+				source := attr.Value.Any().(*slog.Source)
+				source.File = filepath.Base(source.File)
+			}
+			return attr
+		},
+	}))
+}