fix(rectification): name education quality events by kind, no month for year precision (BUG-1088)

Wording only: _quality_user_meaning names start/change/interruption as
升学/学业变动/学业中断; _display_date_label drops the stored month for
year-precision events. Split hash and month field unchanged; same-machine
A/B (PYTHONHASHSEED=0) differs only in user_meaning/display_date_label.
Re-frozen per ERR-110 under new quality_wording_2026_09_29 records;
sealed rerun (20) and reported-offset sweep (900) identical to 09-21.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017eEAG8HD3mm8gsKXgk8uU8

tests/test_rectification_event_probes.py

@@ -1185,3 +1185,48 @@ class DomainAliasTests(unittest.TestCase):
 
 if __name__ == "__main__":
     unittest.main()
+
+
+class QualityWordingTests(unittest.TestCase):
+    """BUG-1088: the education quality question names the event by kind and
+    never invents a month for a year-precision event."""
+
+    def _meaning(self, kind: str, date: str, precision: str) -> tuple[str, str]:
+        event = {
+            **_education_event("00000000-0000-4000-8000-000000001088", kind, date, "fictional"),
+            "precision": precision,
+        }
+        rows = _quality_rows(event)
+        self.assertEqual(len(rows), 1)
+        return rows[0]["user_meaning"], rows[0]["display_date_label"]
+
+    def test_education_kinds_are_not_all_called_university(self) -> None:
+        for kind, name in (
+            ("education_start", "那次升学"),
+            ("education_change", "那次学业变动"),
+            ("education_interruption", "那次学业中断"),
+        ):
+            with self.subTest(kind=kind):
+                meaning, _label = self._meaning(kind, "2011-03-01", "month")
+                self.assertIn(name, meaning)
+                self.assertNotIn("上大学", meaning)
+
+    def test_year_precision_event_has_no_month_in_label(self) -> None:
+        meaning, label = self._meaning("education_start", "2011-01-01", "year")
+        self.assertEqual(label, "2011 年")
+        self.assertTrue(meaning.startswith("2011 年那次升学"))
+        self.assertNotIn("1 月", meaning)
+
+    def test_month_precision_event_keeps_month(self) -> None:
+        meaning, label = self._meaning("education_change", "2012-09-01", "month")
+        self.assertEqual(label, "2012 年 9 月")
+        self.assertTrue(meaning.startswith("2012 年 9 月那次学业变动"))
+
+    def test_year_precision_keeps_split_hash_month_for_scoring_identity(self) -> None:
+        # Only the wording changes; the split hash still carries the stored month so
+        # probe identity (and every frozen score) is unchanged.
+        rows = _quality_rows({
+            **_education_event("00000000-0000-4000-8000-000000001089", "education_start", "2011-01-01", "fictional"),
+            "precision": "year",
+        })
+        self.assertEqual(rows[0]["month"], 1)

tests/test_sealed_holdout_contract_freshness.py

@@ -23,6 +23,8 @@ IDENTITY_FORBIDDEN_PREFIXES = (
     "references/rectification_sealed_holdout.v1.json",
     "docs/research/sealed_holdout_rerun_midnight_anchor_2026_09_21",
     "docs/research/reported_offset_midnight_anchor_2026_09_21",
+    "docs/research/sealed_holdout_rerun_quality_wording_2026_09_29",
+    "docs/research/reported_offset_quality_wording_2026_09_29",
     "docs/research/history/",
     "artifacts/",
 )