Clearer control over tool-call message storage with paired scrubbing

We renamed the configuration flag from store_tool_results to store_tool_messages and aligned behavior so tool-call and tool-result messages are scrubbed together. Metrics still capture token counts, preserving visibility while improving data hygiene and compliance controls. This is a breaking change — update your configuration to ensure consistent retention behavior.

Details

Update config: store_tool_messages replaces store_tool_results
Paired scrubbing ensures tool-call/result messages are removed together
Metrics remain intact, preventing gaps in cost and usage reporting

Who this is for: Teams with strict data retention policies or regulated workloads that require consistent message scrubbing without losing operational metrics.