Go gRPC Services

gRPC's contract-first model only pays off if the contract is treated as an API: versioned packages, deliberate error codes, deadlines everywhere, and interceptors for everything cross-cutting.

Detailed reference material, loaded on demand:

• references/clients.md — NewClient, service-config retries and load balancing, keepalive on both sides, reading status codes.
• references/testing.md — in-memory bufconn server and client, asserting status codes.

Read a reference file only when the summary below is not enough.

1. Proto Design Rules

syntax = "proto3";