Use Bagel on sample/two_hours.mcap. This is synthetic telemetry; /accel.value is acceleration in m/s^2. Find hard-deceleration onsets below -10 m/s^2, debounce by 2 seconds, and keep 30 seconds before and after each onset across all topics in one new MCAP. Keep the source intact. Inspect and preview first, show me what will be kept, and wait for my approval.
