feat: Add ProfitDistributed Event to TestArbitrage Contract

[SynnekOG]

Summary

This PR adds a new ProfitDistributed event to the TestArbitrage contract to improve transparency and tracking of profit distribution operations.

Changes Made

• Added ProfitDistributed event with comprehensive NatSpec documentation
• Event includes three parameters:
  • recipient (indexed): Address receiving the profit
  • amount: Amount of profit distributed
  • token (indexed): Token address used for distribution
• Applied code formatting via forge fmt

Event Definition

/// @notice Emitted when profit is distributed
/// @param recipient Address receiving profit
/// @param amount Profit amount
/// @param token Token address
event ProfitDistributed(address indexed recipient, uint256 amount, address indexed token);

Technical Details

• Location: src/onchain/TestArbitrage.sol (line 194)
• Indexed Parameters: recipient and token (for efficient filtering)
• Non-Indexed Parameters: amount

Benefits

• Improves on-chain observability for profit distribution operations
• Enables efficient event filtering by recipient and token address
• Provides clear audit trail for all profit distributions
• Follows Solidity best practices with proper NatSpec documentation

Testing

No test changes required - this is an event declaration that will be emitted when profit distribution logic is implemented.

Checklist

• Event added with proper NatSpec comments
• Code formatted with forge fmt
• Event parameters properly indexed for gas efficiency
• Documentation complete