v0.3.0

• TypeScript declarations for every entry point (., ./onchain, ./onchain2, ./server); generated parts are checked for staleness in CI (requires TS >= 5.7, or skipLibCheck)
• Tests now assert all 43 MCP tools are listed and called, and that declared exports match runtime exports
• README tool count corrected to 43
• Install: npm i github:Blockchains/blockchainlab-mcp#v0.3.0; image: ghcr.io/blockchains/blockchainlab-mcp:0.3.0