fix(rectification): separate adjacent minutes with transition proximity

Day-level events now score Vimshottari/Narayana transition closeness so
nearby candidate minutes can diverge, with gated quality probes and
answer-prior ranking so high-base-rate existence questions stay out.

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

frontend/src/lib/rectification-agentic/core/candidate-contrast-packet.ts

@@ -103,6 +103,7 @@ export type EngineContrastProbe = Readonly<{
     answer_class?: string;
     sign?: string;
   }>[];
+  target_evidence_id?: string;
 }>;
 
 const REMAINING_LAYERS = ["d24", "d5", "d10", "d9", "d4", "d7", "d12", "d2", "d11", "d30"] as const;

frontend/src/lib/rectification-agentic/core/snapshot-source.ts

@@ -16,6 +16,7 @@ export type SnapshotStaleReason =
   | "scoreable_evidence_changed"
   | "candidate_set_superseded"
   | "inference_revision_changed"
+  | "scoring_policy_changed"
   | "fingerprint_missing";
 
 export const SNAPSHOT_STALE_COPY: Readonly<Record<SnapshotStaleReason, string>> = {
@@ -23,6 +24,7 @@ export const SNAPSHOT_STALE_COPY: Readonly<Record<SnapshotStaleReason, string>>
   scoreable_evidence_changed: "可评分证据已变化，请重新比较候选",
   candidate_set_superseded: "已有更新的候选结果",
   inference_revision_changed: "候选后验已更新，请使用当前结果",
+  scoring_policy_changed: "评分政策已更新，请重新比较候选",
   fingerprint_missing: "候选快照缺少证据指纹，请重新比较候选",
 };
 
@@ -50,6 +52,13 @@ export function classifySnapshotStaleReason(
   if (snapshot.inferenceRevision !== current.inferenceRevision) {
     return "inference_revision_changed";
   }
+  if (
+    snapshot.scoringPolicyVersion
+    && current.scoringPolicyVersion
+    && snapshot.scoringPolicyVersion !== current.scoringPolicyVersion
+  ) {
+    return "scoring_policy_changed";
+  }
   return null;
 }
 
@@ -62,7 +71,8 @@ export function scoreableSnapshotIsCurrent(
   if (!snapshot.scoreableEvidenceFingerprint || !current.scoreableEvidenceFingerprint) return false;
   return snapshot.scoreableEvidenceFingerprint === current.scoreableEvidenceFingerprint
     && snapshot.candidateSetVersion === current.candidateSetVersion
-    && snapshot.inferenceRevision === current.inferenceRevision;
+    && snapshot.inferenceRevision === current.inferenceRevision
+    && snapshot.scoringPolicyVersion === current.scoringPolicyVersion;
 }
 
 /** No stored snapshot is not stale; a stored snapshot with a missing fingerprint is. */

frontend/src/lib/rectification-agentic/core/types.ts

@@ -85,6 +85,7 @@ export type ConflictProbe = Readonly<{
   information_gain: number;
   source: string;
   choice_kind?: ProbeChoiceKind;
+  target_evidence_id?: string;
   style_options?: readonly Readonly<{
     label: string;
     answer_class: AnswerClass;