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>

tests/test_rectification_event_probes.py

@@ -450,7 +450,10 @@ class EventProbesTest(unittest.TestCase):
             }],
         )
         probes = _probes(request, built, ["05:13", "05:40"], "05:13", precision_current="d5_refine")
-        existence = [item for item in probes if item["domain"] == "education"]
+        existence = [
+            item for item in probes
+            if item["domain"] == "education" and item.get("choice_kind") != "event_quality"
+        ]
         self.assertFalse(any(item["year"] in {2015, 2016, 2017} for item in existence))
 
     def test_signature_clusters_use_full_birth_window(self) -> None:
@@ -674,7 +677,7 @@ class EventProbesTest(unittest.TestCase):
             self.assertGreaterEqual(int(probe["year"]), 1900)
             self.assertNotEqual(int(probe["year"]), 0)
             self.assertEqual(distinguish_contract_errors(probe), [])
-            self.assertIn(probe["source"], {"dasha_boundary", "dasha_activation"})
+            self.assertIn(probe["source"], {"dasha_boundary", "dasha_activation", "known_event_quality"})
             self.assertGreaterEqual(len(probe["style_options"]), 4)
             self.assertGreaterEqual(len(probe["candidate_ids"]), 2)
             self.assertGreaterEqual(len(probe["expected_outcomes"]), 2)