smix-runner-client 0.2.1

smix-runner-client — HTTP IPC client to swift-bridge/SmixRunnerCore (outer crate). Ported from now-retired TS source: src/sim/runner-client.ts (1129 lines). v3.1 c8, first outer-allowed crate per user 2026-05-25 brief ('对接 Swift 不要求 0deps purerust').