OpenClaw Skill: NEAR Explorer Browser

Description

## Overview
Create an OpenClaw skill that extracts information from NEAR Explorer via browser automation.

## Skill Commands

```python
@skill.command("near_explorer_tx")
async def explore_transaction(tx_hash: str) -> dict:
"""Get transaction details from explorer"""

@skill.command("near_explorer_account")
async def explore_account(account_id: str) -> dict:
"""Get account info from explorer"""

@skill.command("near_explorer_contract")
async def explore_contract(contract_id: str) -> dict:
"""Get contract details from explorer"""

@skill.command("near_explorer_stats")
async def get_network_stats() -> dict:
"""Get network statistics"""
```

## Deliverables
1. **Explorer skill**
2. **Data extraction**
3. **Published to MoltHub**

## Budget: 5 NEAR