feat: carv action provider

[xiaoxiaff]

Description

This PR adds the CARV Action Provider to AgentKit, enabling social identity to blockchain address resolution through the CARV Protocol API.

Key Features

• Social ID to Address Resolution: Convert Discord IDs and Twitter usernames to blockchain addresses
• Balance Queries: Get token balances by social IDs
• Multi-chain Support: Works with Ethereum, BSC, Base, Polygon, and more
• Network-agnostic Design: Compatible with any blockchain network in AgentKit

This enables powerful use cases like:

• Social tipping on Discord/Twitter without needing wallet addresses
• Token distribution through social mentions
• DAO voting via social platforms
• Governance actions triggered by social interactions

Tests

Network: Base Mainnet
Setup: Twitter bot with CARV API key configured, monitoring mentions
Prompt: User tweets "@Yourbot send me 50 CARV"
[User Context: Twitter ID: 123456789, Username: @Gatsbyter, Tweet ID: 1234567890]
Getting address for Twitter user: gatsbyter
Successfully retrieved user address by Twitter ID:

{
  "user_address": "0xacf85e57cfff872a076ec1e5350fd959d08763db",
  "balance": "21.585240",
  "chain_name": "base",
  "token_ticker": "carv"
}

Transferring 50 CARV to 0xacf85e57cfff872a076ec1e5350fd959d08763db...
Transaction hash: 0xabc123def456...
Bot replies:

✅ Transfer complete via Base AgentKit!
From: 0x1234...5678
To: 0xacf8...3db
Amount: 50 CARV
Tx: 0xabc123...def456
View: basescan.org/tx/0xabc123...def456

Examples: https://x.com/CARVAgent/status/1978063378116383163

Checklist

A couple of things to include in your PR for completeness:

• Added documentation to all relevant README.md files
• Added a changelog entry

[cb-heimdall]

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