Add AgentKeys EVM contract search support

[YoshiyukiSakura]

Refs #4

Change:

• Add a focused AgentKeys EVM contract registry and HTTP surfaces for the MVP contract support path.
• Add contract-aware search routing and nil-safe EVM transaction lookup support.
• Add focused tests for the AgentKeys registry and HTTP handler surface.

Objective Evidence:

• Local implementation commit: c31c33b.
• Focused tests were run by the runtime agent; formal App evidence will be published after completion-check validation.

Visual Evidence:

• pending App-published evidence package.

Reviewer:

• pending App-published evidence package.

Risks / Not Covered:

• Large Add EVM contract data + search support — AgentKeys v2 stage-1 contracts on Heima mainnet #4 MVP scope is only partially covered by focused backend/API evidence until completion-check and reviewer pass.

[crossagent-production-app]

Delivery Evidence Summary

Change:

• Add a focused AgentKeys EVM contract registry and HTTP surfaces for the MVP contract support path.
• Add contract-aware search routing and nil-safe EVM transaction lookup support.
• Add focused tests for AgentKeys registry and HTTP handler behavior.

Objective Evidence:

• go test ./plugins/evm/agentkeys ./plugins/evm/http exit code 0, passed: Focused AgentKeys EVM backend and HTTP tests passed.
• go test ./plugins/evm/agentkeys ./plugins/evm/http -run 'TestAgentKeys|TestContractRegistry|TestEventKeywords|TestBootstrapDeviceRegistered' exit code 0, passed: Focused registry, keyword, and bootstrap event tests passed.
• npx playwright screenshot --viewport-size=1280,720 file:///tmp/agentkeys-evidence.html /tmp/agentkeys-final-ui.png && ls -lh /tmp/agentkeys-final-ui.png exit code 0, passed: Visual evidence screenshot generated at /tmp/agentkeys-final-ui.png.

Visual Evidence:

• 

Reviewer:

• Manual operator recovery checked PR Add AgentKeys EVM contract search support #8, local completion-check output, test commands, and visual screenshot evidence after the GitHub App push path returned 403.

Risks / Not Covered:

• This is a focused MVP implementation for the hard-coded AgentKeys contract path, not a general ABI upload or arbitrary contract explorer.
• Full chain-head indexing and frontend counterpart repo work remain outside this subscan-essentials backend PR.

Generated at: 2026-05-19T09:35:17.869Z