feat: add ThoughtProof reasoning verification action provider

[ThoughtProof]

Summary

New action provider for pre-execution reasoning verification — adversarial multi-model critique before high-stakes agent actions.

Actions

Action	Description
verify_reasoning	Runs Claude + Grok + DeepSeek adversarial critique on a claim. Returns ALLOW or HOLD with confidence score and key objections.

Why

Agents executing DeFi transactions, fund transfers, or irreversible actions need a reasoning check layer — not just token safety, but decision quality verification:

1. Agent receives: "Swap 500 USDC for TOKEN_X at market"
2. Agent calls verify_reasoning({ claim, stakeLevel: 'high', domain: 'financial' })
3. If HOLD → agent refuses and surfaces objections to the user
4. If ALLOW → agent proceeds with confidence

Design

• Fail-safe: API errors return HOLD (never silently proceed)
• Stake-aware: low / medium / high / critical levels route to appropriate model depth
• Signed attestations: responses include JWKS-signed EdDSA attestation for audit trails
• Payment: x402 micropayments on Base (USDC) via api.thoughtproof.ai

Links

• API: https://api.thoughtproof.ai
• Docs: https://thoughtproof.ai/skill.md
• npm MCP: npx @thoughtproof/mcp-server

[cb-heimdall]

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