feat(agent-economy): implement RIP-302 SDKs, MCP server, multi-agent pipeline, and explorer (Fixes #685)

[s6pa1rta3n-lab]

RIP-302 Agent Economy — Complete Autonomous Multi-Tier Implementation

Fixes #685

Summary of Changes

This Pull Request delivers a comprehensive, production-ready implementation of the RustChain RIP-302 Agent Economy, fulfilling all requirements across Tiers 1, 2, 3, and 4 (25–150 RTC):

1. Multi-Language SDKs (Tier 1)

• JavaScript / TypeScript SDK (sdk/javascript/):
  • Converted sync-throw methods in client.js to async.
  • Implemented all RIP-302 REST endpoints: getAgentStats, listAgentJobs, getAgentJob, postAgentJob, claimAgentJob, deliverAgentJob, acceptAgentJob, disputeAgentJob, cancelAgentJob, getAgentReputation.
  • Added high-level AgentEconomyClient class in sdk/javascript/src/agent_economy.js with automatic wallet binding and 5% escrow fee calculation.
  • Added complete TypeScript definitions in types/index.d.ts and examples in examples/agent-economy.js.
  • Unit test suite in test/agent_economy.test.js (23/23 tests passing).
• Python SDK (sdk/python/):
  • Implemented full RIP-302 method suite in RustChainClient.
  • Added dataclasses (Job, Reputation, MarketplaceStats, EscrowCalculation) and AgentEconomyClient in sdk/python/rustchain_sdk/agent_economy.py.
  • Added pytest test suite in tests/test_agent_economy_sdk.py (100% pass).
• Rust Client Crate (sdk/rust/rustchain-agent/):
  • Asynchronous, strongly typed reqwest/tokio client crate providing full agent marketplace models and operations. Verified with cargo test.

2. Framework & Protocol Integrations (Tier 2)

• Model Context Protocol (MCP) Server (integrations/rustchain-agent-mcp/):
  • Standard JSON-RPC stdio MCP server enabling Claude Code, Cursor, and autonomous AI agents to query stats, browse/claim jobs, post bounties, submit deliverable proofs, and query reputation.
• LangChain / CrewAI Wrappers (integrations/langchain_agent_economy/):
  • Production LangChain tool wrappers and multi-agent delegation harness.
• Beacon Skill (integrations/beacon_agent_economy/):
  • Autonomous worker daemon for Beacon nodes to scan, claim, and deliver jobs.

3. Verifiable Multi-Agent Economic Pipeline Demo (Tier 3)

• Autonomous 3-Agent Chain (submissions/rip-302-agent-economy/pipeline_demo.py):
  • Complete execution flow: Agent Alpha (Director) -> Agent Beta (Researcher) -> Agent Gamma (Writer/Auditor).
  • Verifiable on-chain escrow lifecycle (posted -> claimed -> delivered -> completed), 5% protocol fee settlement, cryptographic SHA-256 artifact checksums, and reputation progression.
  • Generates audit packet pipeline_execution_audit.json.

4. Block Explorer Dashboard Enhancements (Tier 4)

• Explorer Visualizer (block-explorer-dashboard/):
  • Enhanced app.js, index.html, and styles.css with interactive reputation card badges (stars, trust score, tiers), job status filters, and escrow volume metrics.

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Verification & Test Results

• JavaScript SDK Tests: npm test --prefix sdk/javascript -> 23 passed, 0 failed
• Python SDK Tests: PYTHONPATH=. pytest tests/test_agent_economy_sdk.py -> 3 passed in 0.09s
• Rust Crate Tests: cargo test --manifest-path sdk/rust/rustchain-agent/Cargo.toml -> 3 passed in 0.01s
• Autonomous Pipeline: python3 submissions/rip-302-agent-economy/pipeline_demo.py -> 100% Verified

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Payout Routing

• EVM (Base/Arbitrum/Polygon/ETH): 0xF46C9F6d70C50BF81ef3588AB523a90a594a2F89
• Stellar: GCL6OXAMLD75BMTINA6EMRUDWK5THQUSHMYNLSNBCJAPZJHNYJTUNIBC