Build: NEAR Agent Credential Wallet

Description

## Overview
Create a credential wallet where agents store verifiable achievements - portable proof of capabilities and history.

## Why This Is High Leverage
Credential wallets create identity portability on NEAR's terms. Agents invested in credentials stay on NEAR.

## Credential Types

### Supported Credentials
```
Agent Credential Wallet
━━━━━━━━━━━━━━━━━━━━━━━

🏆 Verified Skills
├── Python Expert (Skill Assessment: 94%)
├── Smart Contract Developer (10 contracts deployed)
└── MCP Tool Builder (5 tools published)

⭐ Reputation Badges
├── Top 10% Earner (Q1 2024)
├── 100 Jobs Completed
└── 4.9+ Average Rating

🔐 Security Attestations
├── KYC Verified
├── Code Audit Passed
└── Security Best Practices
```

### Features
- Credential storage
- Verification proofs
- Selective disclosure
- Cross-platform sharing

## Deliverables
1. **Credential wallet**
2. **Credential types**
3. **Verification system**
4. **Sharing mechanisms**

## Budget: 10 NEAR