fix(rectification): invite another dated event instead of saying the pool is closed (BUG-689)

When the seven collect lines are closed, the range card still appears, but the copy asks for one more exact-day event of any kind instead of saying the questions are finished. A new dated event after delivery stales the snapshot so the session does not stay delivered.

frontend/src/components/rectification-range-delivery.tsx

@@ -4,7 +4,9 @@ import type { RectificationCandidateResult } from "@/lib/rectification-candidate
 import {
   RECTIFICATION_USER_COPY,
   REPRESENTATIVE_MINUTE_DISCLAIMER,
+  rangeDeliveryCaptionWithoutClosedInvite,
   rangeDeliveryEventCopy,
+  rangeDeliveryShowsOpenCollectInvite,
 } from "@/lib/rectification-agentic/user-copy";
 import type { RangeDeliveryProjection } from "@/lib/rectification-agentic/v9/divergence-panel";
 import { RectificationVerificationReport } from "@/components/rectification-verification-report";
@@ -40,14 +42,28 @@ export function RectificationRangeDelivery({
   const markdown = delivery?.verification_markdown
     ?? result.verificationReportMarkdown;
   const sharedTraits = delivery?.shared_traits ?? [];
+  const showOpenCollectInvite = rangeDeliveryShowsOpenCollectInvite({
+    hint: delivery?.narrow_hint,
+    columns,
+  });
+  const caption = showOpenCollectInvite || delivery?.narrow_hint?.includes(
+    RECTIFICATION_USER_COPY.rangeDeliveryCollectClosed,
+  )
+    ? rangeDeliveryCaptionWithoutClosedInvite(delivery?.narrow_hint)
+    : delivery?.narrow_hint ?? null;
 
   return (
     <section className="rectification-candidates rectification-range-delivery" aria-label="生时校正区间">
       <div className="rectification-candidates-heading">
         <strong>{title}</strong>
       </div>
-      {delivery?.narrow_hint ? (
-        <p className="rectification-range-delivery__narrow">{delivery.narrow_hint}</p>
+      {caption ? (
+        <p className="rectification-range-delivery__narrow">{caption}</p>
+      ) : null}
+      {showOpenCollectInvite ? (
+        <p className="rectification-range-delivery__invite">
+          {RECTIFICATION_USER_COPY.rangeDeliveryCollectClosed}
+        </p>
       ) : null}
       {delivery?.tie_break_available && onTieBreak && !readonly ? (
         <button