Add Admin control for fundamentals cutover

tests/unit/test_activation_settings.py

@@ -8,7 +8,9 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from app.exceptions import ValidationError
 from app.services.admin_service import (
     get_activation_config,
+    get_fundamentals_cutover_config,
     update_activation_config,
+    update_fundamentals_cutover_config,
 )
 
 
@@ -76,3 +78,18 @@ class TestActivationConfig:
     async def test_rejects_out_of_range_confidence(self, session: AsyncSession):
         with pytest.raises(ValidationError):
             await update_activation_config(session, {"min_confidence": 120.0})
+
+
+class TestFundamentalsCutoverConfig:
+    async def test_defaults_off_when_unset(self, session: AsyncSession):
+        assert await get_fundamentals_cutover_config(session) == {"enabled": False}
+
+    async def test_round_trips_explicit_switch(self, session: AsyncSession):
+        assert await update_fundamentals_cutover_config(session, True) == {
+            "enabled": True
+        }
+        assert await get_fundamentals_cutover_config(session) == {"enabled": True}
+
+        assert await update_fundamentals_cutover_config(session, False) == {
+            "enabled": False
+        }