- Add SamplerReconfigureFunc type and SetSamplerReconfigureCallback method
- Track previous sampler type/ratio values to detect changes
- Invoke callback when telemetry.sampler.type or ratio changes
- Fix race condition in WatchAndApply cleanup using watcherStopped flag
- Add unit tests for sampler type/ratio hot-reload scenarios
- Update ADR-0023 status to reflect Phase 3.2 in flight
Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>
