feat(plugins): add Solentic native Solana staking plugin

[MBrassey]

Summary

Adds @goat-sdk/plugin-solentic — native Solana staking via the Solentic API with the Blueprint validator (~6% APY, 0% commission, Jito MEV enabled, rank 87).

The plugin exposes 8 @Tool-decorated methods covering the full staking lifecycle, matching the existing GOAT plugin conventions (see solana-magiceden for layout).

Tools

Tool	What it does
stakeSol	Build (unsigned) or execute a delegation to the Blueprint vote account
unstakeSol	Deactivate an existing stake account
withdrawStake	Withdraw SOL from a cooled-down stake account
getApy	Current staking + total APY for the Blueprint validator
getValidatorInfo	Commission, total stake, rank, performance metrics
getStakeAccounts	List all stake accounts owned by a wallet
checkWithdrawReady	Which accounts are ready to withdraw + epoch timing
simulateStake	Projected rewards for a given SOL amount + duration

Zero-custody architecture

The Solentic API never sees private keys. Each staking method returns an unsigned transaction which the agent signs locally via the SolanaWalletClient from @goat-sdk/wallet-solana. No API keys or authentication required — the API is open.

Test plan

• pnpm install && pnpm --filter @goat-sdk/plugin-solentic build
• Usage example in the plugin README shows the canonical integration:

  import { solentic } from "@goat-sdk/plugin-solentic";
  const tools = await getOnChainTools({ wallet: solanaWallet, plugins: [solentic()] });

• Run a stake quote against the live API (no signing): await service.simulateStake({ amountInSol: "1", durationDays: 365 })

Links

• Solentic API: https://solentic.theblueprint.xyz
• API docs / OpenAPI: https://solentic.theblueprint.xyz/api-docs
• Also published standalone: @blueprint.xyz/goat-plugin-solentic on npm
• Validator vote account: 528hi3StRe7uGjt99d35myh95JPc2MqBEHTPYcEhqMg5

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