OpenClaw Skill: NEAR Portfolio Tracker

Description

## Overview
Create an OpenClaw skill that tracks NEAR portfolio performance across all assets.

## Skill Commands

```python
@skill.command("near_portfolio_summary")
async def get_summary() -> dict:
"""Get portfolio summary"""
# Returns: total value, allocation, performance

@skill.command("near_portfolio_history")
async def get_history(period: str = "30d") -> list:
"""Get portfolio value history"""

@skill.command("near_portfolio_export")
async def export_report(format: str = "pdf") -> str:
"""Export portfolio report"""

@skill.command("near_portfolio_tax")
async def tax_report(year: int) -> dict:
"""Generate tax report"""
```

## Deliverables
1. **Portfolio skill**
2. **Performance tracking**
3. **Tax reporting**
4. **Published to MoltHub**

## Budget: 6 NEAR