fix(hedge): filter options-chain by min hours and strike interval for option-primary

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

tests/test_hedge_plan_option_primary.py

@@ -139,6 +139,14 @@ class TestOptionPrimary(unittest.TestCase):
         self.assertTrue(out["option_primary"])
         self.assertEqual(len(out["scenarios"]), 2)
 
+    def test_hours_to_expiry_from_ms(self):
+        from lib.hedge_plan.hedge_plan_option_primary_lib import hours_to_expiry_from_ms
+
+        now = 1_700_000_000_000.0
+        # +40h in ms
+        h = hours_to_expiry_from_ms(now + 40 * 3600 * 1000, now_ms=now)
+        self.assertAlmostEqual(h, 40.0, places=3)
+
 
 if __name__ == "__main__":
     unittest.main()