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feat: serve SolutionServer through agents.Serve() (#290) - #293
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antoinetoussaint-byte merged 2 commits intoAug 16, 2026
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Add a Solution field to PluginRegistration and register it during agent startup, so a solution plugin can expose its gRPC contract through the standard Serve() path alongside Provider and the other capabilities. Extract the unconditional server registrations into a testable registerServices helper and cover Solution registration with a test. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The prior test asserted a private registerServices helper via GetServiceInfo, so it could not catch a regression that stopped Serve from calling the registration (both tests passed against the helper, not against Serve). The helper existed only to enable that weaker test. Register Solution inline in Serve exactly like Provider (dropping the helper), and replace the unit test with a real spawn test: it builds a testdata solution agent, starts it through Serve, dials over gRPC, and asserts a Solution RPC routes to the fixture handler. Removing the registration in Serve now surfaces as an Unimplemented "unknown service" error — verified by temporarily deleting the registration. No mocks; the test drives the actual Serve path. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Closes#290.
Summary
SolutiongRPC contract is generated but no plugin can expose it through the standard agent startup path —PluginRegistrationhad noSolutionfield andServe()never registered one (unlikeProvider). This wires it up so a solution binary can serve its contract, unblocking the end-to-end tracer bullet.main. This PR re-lands the same work rebased ontomain.Test plan
go test ./agents/passesserve_solution_test.goboots a real solution agent binary throughServe()and calls the Solution RPC end-to-end (no mocks)