- Use optional timeoutMs parameter (undefined = use config/default)
- Extract DEFAULT_IMESSAGE_PROBE_TIMEOUT_MS to shared constants.ts
- Import constant in client.ts instead of hardcoding
- Re-export constant from probe.ts for backwards compatibility
- Add probeTimeoutMs config option to channels.imessage
- Export DEFAULT_IMESSAGE_PROBE_TIMEOUT_MS constant (10s) from probe.ts
- Propagate timeout config through all iMessage probe/RPC operations
- Fix hardcoded 2000ms timeouts that were too short for SSH connections
Closes: timeout issues when using SSH wrapper scripts (imsg-ssh)
