rebuild(stage-15): complete governance and handoff

next/tests/test_market_data.py

@@ -21,7 +21,7 @@ from backend.data.policy import DataPolicyError, DataSourcePolicy
 from backend.data.providers.ifind import IfindProvider
 from backend.data.providers.tushare import TushareProvider
 from backend.data.repository import MarketRepository
-from backend.data.sentiment import calculate_sentiment
+from backend.data.sentiment import _phase, calculate_sentiment
 from backend.database.connection import Database
 from backend.database.migrations import MIGRATIONS, MigrationRunner
 from backend.features.market.snapshot import build_snapshot
@@ -403,6 +403,25 @@ def test_sentiment_has_all_weighted_components_and_extreme_risk_cap() -> None:
     }
 
 
+def test_sentiment_phase_transitions_require_confirmed_recovery_and_fermentation() -> None:
+    phase, _reason = _phase(
+        {"phase": "冰点"}, 28, 3, 40, 45, 50, "修复", False
+    )
+    assert phase == "冰点"
+
+    phase, _reason = _phase(
+        {"phase": "修复", "fermentation_signal_count": 0},
+        55,
+        8,
+        60,
+        55,
+        60,
+        "发酵",
+        False,
+    )
+    assert phase == "修复"
+
+
 def test_incomplete_daily_snapshot_is_rejected_without_overwriting(tmp_path) -> None:
     database = Database(tmp_path / "sync.db")
     MigrationRunner(database).upgrade(MIGRATIONS)