feat: production alignment — schemes, Path2, rmcp MCP parity - #55
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- Add sealed BatchSettlementScheme and AuthCaptureScheme markers. - SVM Path 2: opt-in smart-wallet verification with layout fallthrough, TransferChecked outcome matching, and Path1/Path2 split. - r402-mcp: PaymentWrapper + pay_and_call with foundation meta keys (no longer a stub). - Document remaining CPI plumbing and follow-up schemes.
Replace the Value-shell MCP crate with an rmcp 3.x based transport that matches foundation Go/TS constants (payment code 402) and mcp.md dual structuredContent+text payment-required results. PaymentWrapper and X402McpClient follow go/mcp control flow. Add find_matching_requirements in r402-core (scheme/network/amount/asset/payTo).
Complete V2 MCP transport parity: ResourceServer orchestration in r402-core, dual-format payment-required/settlement-failure (R5), PaymentWrapper control flow matching go/mcp/server.go, and X402McpClient with PaymentSigner/hooks matching go/mcp/client.go. Update docs and remove placeholder labels from the crate catalog.
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changed the title
Match workspace Facilitator mock style: return ready futures instead of async fn bodies without await. Unblocks `just clippy` / CI -D warnings.
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Summary
Production-alignment slice (ex-chain-breadth), now including full V2 MCP transport on the official Rust MCP SDK.
Delivered
batch-settlement/auth-capturesealed markers inr402-core.enable_smart_wallet_verification(default false, matches TS). Path 1 layout failures fall through to outcome-basedTransferCheckedmatching. CPI inner-instruction extraction remains follow-up.find_matching_requirements— GoFindMatchingRequirementssemantics (scheme/network/amount/asset/payTo).ResourceServer— shared verify/settle orchestration used by MCP (HTTP can share later).r402-mcprewrite on officialrmcp3.x (breaking vs placeholder shell):MCP_PAYMENT_REQUIRED_CODE = 402i32, meta keys).mcp.mddualstructuredContent+content[0].text; R5 settlement failure same format.PaymentWrapperports Goserver.go(tool-level 402, not transport errors).X402McpClient+McpToolCaller/PaymentSigner+ hooks (V2-only; no V1 fallback).Intentional gaps vs foundation
-32042.McpClientError::StillRequired(stricter than Go).Explicit follow-ups
RpcSimulateTransactionResult.inner_instructionsfor CPI-only wallets.batch-settlement/auth-captureimplementations.PaymentSigneradapter over registered scheme clients /r402-httpsigning surface.Test plan
cargo test -p r402-core --libcargo test -p r402-mcp --features fullcargo clippy -p r402-core -p r402-mcp --features full --all-targets -- -D warnings