feat(log): Formatted console logging with file output

.gitignore

@@ -0,0 +1,2 @@
+*.log
+example/app.log

logger.go

@@ -135,6 +135,24 @@ func (l *MasterLogger) log(level Level, message string, file string, line int, f
 				}
 			}
 
+			// Skip FormattedEncoder for file writers if JSONEncoder is present
+			// This ensures files only get JSON format when JSONEncoder is added
+			if _, isFormatted := encoder.(*FormattedEncoder); isFormatted {
+				if _, isFile := writer.(*FileWriter); isFile {
+					// Check if JSONEncoder exists in encoders
+					hasJSONEncoder := false
+					for _, e := range l.encoders {
+						if _, ok := e.(*JSONEncoder); ok {
+							hasJSONEncoder = true
+							break
+						}
+					}
+					if hasJSONEncoder {
+						continue // Don't write formatted to file if JSON encoder exists
+					}
+				}
+			}
+
 			var data []byte
 			var err error