fix(rectification): ask reverse-inference probes at engine dasha months

Keep Vimshottari/Narayana start dates instead of truncating to year, so
same-year month splits can appear on the choice card.

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

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

@@ -729,7 +729,7 @@ function remainingQuestion(
   layer: string,
   layerLabel: string,
 ): string {
-  return `引擎给出的区分机会绑定 ${layerLabel}。按 Opportunity 的年份、领域和 expected_outcomes 改写成自然语言，不得发明年份、事件事实或候选映射。`;
+  return `引擎给出的区分机会绑定 ${layerLabel}。按 Opportunity 的时间范围、领域和 expected_outcomes 改写成自然语言，不得发明年份、事件事实或候选映射，不得改写时间范围。`;
 }
 
 function remainingOutcomes(