feat(plugin-defi): Add Blueprint native staking actions

[MBrassey]

Summary

Adds native Solana staking with Blueprint validator to the DeFi plugin. This fills the native staking gap — the kit currently only has liquid staking via Jupiter (stakeWithJup) and Solayer (stakeWithSolayer). Blueprint enables direct validator delegation, where the agent's wallet retains full authority over the stake account.

New Actions & Tools

Action	Tool Function	Description
STAKE_SOL_WITH_BLUEPRINT	blueprintStake(agent, amountSol)	Stake SOL natively with Blueprint validator (~6% APY)
UNSTAKE_SOL_FROM_BLUEPRINT	blueprintUnstake(agent, stakeAccountAddress)	Deactivate a stake account
CHECK_BLUEPRINT_STAKE_ACCOUNTS	blueprintCheckAccounts(agent)	List all stake accounts with status and epoch timing
GET_BLUEPRINT_VALIDATOR_INFO	blueprintGetValidator()	Get validator profile (APY, vote success, infrastructure)
DONATE_TO_BLUEPRINT	blueprintDonate(agent, amountSol)	Donate SOL to support platform development

How It Works

1. Agent calls blueprintStake(agent, 10) to stake 10 SOL
2. Blueprint API returns an unsigned base64 transaction
3. Tool deserializes, signs with agent.wallet, and submits to Solana
4. SOL is delegated to Blueprint validator — wallet retains full authority

Zero custody — Blueprint never sees the agent's private key. All transactions are unsigned base64, signed locally by the agent.

File Structure

packages/plugin-defi/src/blueprint/
├── actions/
│   ├── index.ts
│   ├── blueprintStake.ts
│   ├── blueprintUnstake.ts
│   ├── blueprintCheckAccounts.ts
│   ├── blueprintGetValidator.ts
│   └── blueprintDonate.ts
├── tools/
│   ├── index.ts
│   ├── blueprint_stake.ts
│   ├── blueprint_unstake.ts
│   ├── blueprint_check_accounts.ts
│   ├── blueprint_get_validator.ts
│   └── blueprint_donate.ts
└── constants/
    └── index.ts

Why Blueprint?

• Native staking — not liquid staking. No derivative token risk, no smart contract risk.
• ~6% APY (staking + Jito MEV)
• Enterprise hardware — AMD EPYC 9654, 768GB DDR5, dual servers
• Full AI discovery — MCP server, llms.txt, OpenAPI, A2A agent card
• On-chain attribution — Memo Program instruction on every transaction
• No auth required — all endpoints public

Links

• API: https://solentic.theblueprint.xyz
• Docs: https://solentic.theblueprint.xyz/docs
• OpenAPI: https://solentic.theblueprint.xyz/openapi.json
• GitHub: https://github.com/mbrassey/solentic
• Validator: StakeWiz