fix: Fix Parameter Parsing in plugin-evm TransferAction and Return Transaction Hash

[FWangZil]

Relates to:

#964

Risks

Low – The changes affect the EVM plugin's transfer function, specifically the template parsing and parameter extraction. Other parts of the system should remain unaffected.

Background

What does this PR do?

• Fixes the parsing of transfer parameters in the plugin-evm module to ensure the TransferAction function receives the correct parameters.
• Improves the template parsing prompt for EVM transfers.
• Returns the transaction hash upon successful transfer execution.

What kind of change is this?

• Bug fix: Resolves issues with parameter parsing preventing transfer execution.
• Improvement: Enhances the transfer template parsing and response handling to return transaction hashes.

Documentation changes needed?

My changes do not require a change to the project documentation.

Testing

Where should a reviewer start?

• Review changes in the EVM plugin’s transfer function and template parsing logic.

Detailed testing steps

1. Configure an EVM wallet.
2. Ensure the wallet has sufficient ETH.
3. Issue a natural language command to perform a transfer (e.g., "Send 0.5 ETH to 0x123...").
4. Verify that the transfer is executed successfully and the transaction hash is returned.

Discord username

0xtogo

[odilitime]

why is options ignored now? Prefer an LLM options over explicitly passed ones?

[FWangZil]

I found that the previous way of directly passing options into action.transfer was in

async transfer(
runtime: IAgentRuntime,
params: TransferParams
): Promise<Transaction>

The parameters cannot be parsed out smoothly, so I refer to the writing method of plugin-solana

https://github.com/ai16z/eliza/blob/main/packages/plugin-solana/src/actions/transfer.ts#L116

Manually built parameters replace those passed to action.transfer.