feat: add Maiat trust verification action provider

[JhiNResH]

Summary

New action provider for pre-transaction trust verification — check agent reputation and token safety before executing any swap, transfer, or delegation.

Actions

Action	Description
check_trust_score	Check agent/token trust score (0-100) with proceed/caution/avoid verdict
check_token_safety	Detect honeypots, high-tax tokens, unverified contracts
get_agent_reputation	Full agent reputation with community sentiment + endorsements

Why

Agents using AgentKit for DeFi need a way to verify tokens and counterparties are safe before executing transactions. This provider adds a safety check layer:

1. Agent receives: "Swap 100 USDC for TOKEN_X"
2. Agent calls check_token_safety(TOKEN_X)
3. If honeypot detected → agent refuses the swap
4. If safe → agent proceeds with the swap

API

All actions use Maiat's free public API — no API key, no payment required:

• app.maiat.io/api/v1/trust?address=...
• app.maiat.io/api/v1/token-check?token=...

x402 paid endpoints also available for richer data without rate limits.

Stats

• 18,600+ agents indexed on Base
• 854+ query logs
• Live at https://app.maiat.io

Implementation

• Follows existing action provider patterns (similar to defillama)
• No external dependencies beyond zod (already in monorepo)
• Network-agnostic (API-based, works on all chains)
• 3 actions, clean schemas, well-documented descriptions

[cb-heimdall]

🟡 Heimdall Review Status

Requirement	Status	More Info
Reviews	🟡 0/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1