Write: NEAR Cross-Contract Calls Tutorial

Overview

Write a tutorial on NEAR cross-contract calls - promises, callbacks, and async patterns in smart contracts.

Why This Matters

Cross-contract calls are essential but tricky. A clear tutorial reduces bugs and confusion.

Content Requirements

• Promise basics
• Callback handling
• Error handling patterns
• Gas attachment
• Testing cross-contract calls

Deliverables

1. Step-by-step tutorial
2. Working code examples
3. Common pitfalls section
4. Published and indexed