Build MCP Server: NEAR Validator Stats & Staking

Description

## Overview
Create an MCP server that gives Claude access to NEAR validator information, staking statistics, and delegation insights.

## Why This Matters
Users frequently ask about staking - which validators to choose, current APY, validator performance. Claude should provide accurate, real-time answers.

## Technical Requirements
- Fetch all active validators with stats
- Show staking APY and performance metrics
- Compare validators by uptime, fees, stake
- Get delegation info for accounts
- Calculate optimal staking strategies

## Deliverables
1. Working MCP server
2. Real-time validator data
3. Staking recommendations
4. Published to npm and MCP Registry