fix: make conversational rectification converge

scripts/rectification_policy.py

@@ -0,0 +1,18 @@
+"""Shared birth-time rectification convergence policy."""
+
+from __future__ import annotations
+
+import json
+from pathlib import Path
+from typing import Final
+
+_POLICY_PATH = Path(__file__).resolve().parents[1] / "references" / "rectification_policy.v1.json"
+POLICY: Final[dict[str, int | str]] = json.loads(_POLICY_PATH.read_text(encoding="utf-8"))
+
+MIN_SCORING_EVENTS: Final = int(POLICY["minScoringEvents"])
+MIN_CONFIRMATION_EVENTS: Final = int(POLICY["minConfirmationEvents"])
+MIN_CONFIRMATION_DOMAINS: Final = int(POLICY["minConfirmationDomains"])
+MAX_EXTERNAL_VALIDATION_WIDTH_MINUTES: Final = int(POLICY["maxExternalValidationWidthMinutes"])
+MAX_CONFIRMATION_WIDTH_MINUTES: Final = int(POLICY["maxConfirmationWidthMinutes"])
+MIN_CONFIRMATION_MARGIN_PERCENT: Final = int(POLICY["minConfirmationMarginPercent"])
+MAX_PLATEAU_ROUNDS: Final = int(POLICY["maxPlateauRounds"])