v0.7.3

Added

• Configurable drift detection field (PostRunConfig.DriftField) — specifies which sensor field to compare for post-run drift detection. Defaults to "sensor_count" for backward compatibility.

Fixed

• Post-run drift detection never fired when sensor field was count — drift comparison was hardcoded to "sensor_count" but bronze consumers write "count" in hourly-status sensors, causing both baseline and current values to return 0 and silently suppressing all drift detection.
• Two flaky time-sensitive tests — TestSLAMonitor_Reconcile_PastWarningFutureBreach and TestWatchdog_MissedSchedule_DetailFields used real wall-clock time instead of injected NowFunc, causing failures depending on time of day.