Compact events

[theFirstCodeManiac]

Closes #439

Pull Request

Summary

Optimized smart contract event payloads to reduce transaction costs by minimizing emitted data while preserving compatibility for downstream consumers.

Changes Made

• Removed redundant fields from emitted events
• Replaced full object data with lightweight identifier references where applicable
• Updated event emission logic to use compact payloads
• Preserved event structure required for existing indexers
• Benchmarked gas usage before and after optimization for each affected event type

Testing

• Verified all events emit the expected data using IDs instead of full objects
• Confirmed existing indexers continue to process events correctly
• Compared gas consumption before and after optimization
• Executed existing unit and integration tests to ensure no regressions

Acceptance Criteria

• Remove redundant fields from events
• Use IDs instead of full objects in events
• Measure gas savings per event type
• Maintain backward compatibility for indexers