fix(rectification): persist refresh attempts and map collect focus kinds (BUG-656/657/658)

Empty engine refresh now records an already_answered attempt so GET can leave wait-to-narrow; collect kinds map onto the table CHECK; remaining candidates drive probe refresh.

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

tests/test_candidate_discriminator_contract.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import random
 import unittest
-from datetime import date, datetime
+from datetime import date, datetime, timedelta
 
 from scripts.rectification.candidate_contrast import (
     MIN_DISCRIMINATOR_DOMAINS,
@@ -27,7 +27,7 @@ from scripts.rectification.event_probes import (
     _partition_ranked_probes,
     _probe_caps,
 )
-from scripts.rectification.refinement_packet import window_scan
+from scripts.rectification.refinement_packet import build_refinement_packet, window_scan
 
 
 PLANETS = {
@@ -511,6 +511,44 @@ class DiscriminatorContractTest(unittest.TestCase):
             for item in dropped
         ))
 
+    def test_refresh_packet_uses_column_times_not_full_grid(self) -> None:
+        remaining = ["04:48", "04:53", "04:59", "05:06", "05:07"]
+        start = datetime(1997, 8, 8, 4, 40)
+        grid = [(start + timedelta(minutes=index)).strftime("%H:%M") for index in range(31)]
+        self.assertEqual(len(grid), 31)
+        contexts = []
+        for time in grid:
+            if time in remaining[:2]:
+                contexts.append(_context(time, d4_asc=1, d9_asc=1, d10_asc=1, d12_asc=1, d24_asc=1))
+            elif time in remaining[2:]:
+                contexts.append(_context(time, d4_asc=2, d9_asc=2, d10_asc=3, d12_asc=4, d24_asc=2))
+            else:
+                contexts.append(_context(time, d4_asc=1, d9_asc=1, d10_asc=1, d12_asc=1, d24_asc=1))
+        built = {"static_contexts": contexts, "candidate_times": grid}
+        packet = build_refinement_packet(
+            _request(asked_probe_keys=[
+                "career.2020",
+                "career.2023",
+                "education.2016",
+                "education.2020",
+                "relationship.2023",
+                "relocation.2015",
+            ], refresh_probes=True, column_times=remaining),
+            built,
+            representative_time="04:53",
+            candidate_times=grid,
+            column_times=remaining,
+        )
+        probes = packet.get("discriminating_event_probes") or []
+        allowed = set(remaining)
+        for probe in probes:
+            ids = {str(item)[:5] for item in (probe.get("candidate_ids") or [])}
+            self.assertTrue(ids <= allowed, probe.get("semantic_key"))
+        if not probes:
+            self.assertEqual(packet.get("refresh_result"), "no_new_probes")
+        else:
+            self.assertEqual(packet.get("refresh_result"), "new_probes")
+
 
 if __name__ == "__main__":
     unittest.main()