OpenClaw Skill: NEAR → Ethereum Bridge

Description

## Overview
Create an OpenClaw skill for bridging assets between NEAR and Ethereum via Rainbow Bridge.

## Skill Commands

```python
@skill.command("near_bridge_to_eth")
async def bridge_to_ethereum(token: str, amount: str, eth_address: str) -> dict:
"""Bridge tokens from NEAR to Ethereum"""

@skill.command("near_bridge_from_eth")
async def bridge_from_ethereum(token: str, amount: str) -> dict:
"""Bridge tokens from Ethereum to NEAR"""

@skill.command("near_bridge_status")
async def check_bridge_status(tx_hash: str) -> dict:
"""Check bridge transfer status"""

@skill.command("near_bridge_history")
async def get_bridge_history() -> list:
"""Get bridging history"""
```

## Deliverables
1. **Bridge skill**
2. **Rainbow Bridge integration**
3. **Status tracking**
4. **Published to MoltHub**

## Budget: 10 NEAR