Refactor tag encoder to optimize buffer reuse, simplify tag marshaling, and improve event handling; enhance tests with additional coverage and example validation.

pkg/utils/bufpool/bufpool.go

@@ -74,5 +74,6 @@ func PutBytes(b []byte) {
 			return fmt.Sprintf("returning bytes to buffer: %p", ptr)
 		},
 	)
+	b = b[:0]
 	Put(b)
 }