- Added `safeSend` helper wrapping `Subprocess.send()` so sync throws and async EPIPE rejections cannot escape.
- Replaced inline try/catch send wrappers in STT, TTS, and tiny-title clients with shared `safeSend`.
- Added `isIpcSendEpipe` predicate and made matching rejections non-fatal in the `unhandledRejection` handler.
- Added contract tests for `safeSend` and `isIpcSendEpipe` covering sync throws, async rejections, and edge cases.
oldschoola