📝 Add Note on EIP-712 Message Signing

Signed-off-by: Pascal Marco Caversaccio <pascal.caversaccio@hotmail.ch>

Author: pcaversaccio

README.md

@@ -200,6 +200,9 @@ To list all supported networks:
 
 ## Safe Message Hashes
 
+> [!IMPORTANT]
+> At present, this [script](./safe_hashes.sh) does not support calculating Safe message hashes for [EIP-712](https://eips.ethereum.org/EIPS/eip-712)-based messages due to the inherent complexity of parsing the message and identifying the relevant type hashes. However, you can find my easily adjustable Bash script version [here](https://github.com/pcaversaccio/zksync-emergency-upgrades/blob/main/safe_hashes.sh) to calculate Safe message hashes for [EIP-712](https://eips.ethereum.org/EIPS/eip-712)-based messages.
+
 This [script](./safe_hashes.sh) not only calculates Safe transaction hashes but also supports computing the corresponding hashes for off-chain messages following the [EIP-712](https://eips.ethereum.org/EIPS/eip-712) standard. To calculate the Safe message hashes for a specific message, specify the `network`, `address`, and `message` parameters. The `message` parameter must specify a valid file containing the raw message. This can be either the file name or a relative path (e.g., `path/to/message.txt`). Note that the [script](./safe_hashes.sh) normalises line endings to `LF` (`\n`) in the message file.
 
 An example: Save the following message to a file named `message.txt`: