v1.91.0

Added

• Regression report is now auto-embedded as a Markdown panel at the top of to_auto_plots() whenever regression_report.has_regressions is true. Previously only the per-variable overlay plots were injected, so absolute-method fires (which have no history/overlay) were silent in the report.

Changed

• Regression report rendering (RegressionReport.summary() and to_markdown()) now dispatches per method so each row describes its actual gate:
  • percentage: threshold shown as ±T%.
  • adaptive: threshold shown as Tσ (change remains in percent).
  • delta: Change column shows the raw Δ (not percent, since the gate is in absolute units); threshold rendered as ±T.
  • absolute: Change and Baseline cells rendered as em-dash (no historical baseline); Threshold cell carries the direction-aware inequality (≤ L for OptDir.minimize, ≥ L for OptDir.maximize). Summary line phrased as current=X vs ceiling|floor=Y.

Fixed

• RegressionResult.summary() / RegressionReport.to_markdown() no longer render +nan% or mislabel the hard limit as Baseline for regression_method="absolute" results.