fix(rectification): share datedPrecision for quarter and range events

Training already counted quarter/range as dated, while the inference ledger mapped them to unknown and left the events unused.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/lib/rectification-agentic/v9/evidence-model.ts

@@ -165,7 +165,7 @@ export function datePrecisionRank(precision: string): number {
   return PRECISION_RANK[precision] ?? -1;
 }
 
-function datedPrecision(value: string): DatedEventInput["precision"] {
+export function datedPrecision(value: string): DatedEventInput["precision"] {
   if (value === "day" || value === "month" || value === "year" || value === "unknown") return value;
   return "year";
 }

frontend/src/lib/rectification-agentic/v9/inference-adapter.ts

@@ -15,6 +15,7 @@ import { rankActive } from "../core/convergence-evaluator.ts";
 import { rangeFromTimes, unionStillValidRange } from "../core/credible-range.ts";
 import { previousInferenceFromReceipt } from "../core/compose-receipt.ts";
 import type { AnswerClass, ConflictProbe, InferenceState } from "../core/types.ts";
+import { datedPrecision } from "./evidence-model.ts";
 import {
   isHoldoutVerificationQuote,
   type ChoiceKey,
@@ -28,8 +29,8 @@ function yearFrom(value: string | null | undefined): number | null {
 }
 
 function asPrecision(value: string | null | undefined): EngineEventInput["precision"] {
-  if (value === "day" || value === "month" || value === "year") return value;
-  return "unknown";
+  if (!value) return "unknown";
+  return datedPrecision(value);
 }
 
 export function askedProbeKeysFromReceipt(