Auto-fill 期期 sheets from trading balance with same-sheets default.

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

tests/test_hedge_plan_calc.py

@@ -9,6 +9,8 @@ from lib.hedge_plan.hedge_plan_calc_lib import (
     option_expiry_pnl,
     option_premium_total,
     perp_pnl,
+    resolve_oo_budget_usdc,
+    suggest_oo_sheets,
 )
 
 
@@ -129,6 +131,55 @@ class TestHedgePlanCalc(unittest.TestCase):
         self.assertEqual(floor_contracts_to_precision(4.569713, 0), 4.0)
         self.assertEqual(floor_contracts_to_precision(0, 4), 0.0)
 
+    def test_oo_budget_min_trading_and_cap(self):
+        b = resolve_oo_budget_usdc(trading_usdc=11.07, trade_budget_usdc=10, buffer_ratio=0.95)
+        self.assertTrue(b["ok"])
+        self.assertAlmostEqual(b["trading_cap"], 11.07 * 0.95, places=4)
+        self.assertEqual(b["budget_usdc"], 10.0)
+
+    def test_suggest_oo_same_sheets_default(self):
+        # cost_a=1, cost_b=1 → pair=2; budget=10 → n=5
+        s = suggest_oo_sheets(
+            mode="same_sheets",
+            budget_usdc=10,
+            ask_a=100,
+            ct_mult_a=0.01,
+            ask_b=100,
+            ct_mult_b=0.01,
+        )
+        self.assertEqual(s["mode"], "same_sheets")
+        self.assertEqual(s["sheets_a"], 5)
+        self.assertEqual(s["sheets_b"], 5)
+        self.assertTrue(s["ok"])
+
+    def test_suggest_oo_split_budget(self):
+        # cost_a=1, cost_b=2; half=5 → nA=5, nB=2
+        s = suggest_oo_sheets(
+            mode="split_budget",
+            budget_usdc=10,
+            ask_a=100,
+            ct_mult_a=0.01,
+            ask_b=200,
+            ct_mult_b=0.01,
+        )
+        self.assertEqual(s["mode"], "split_budget")
+        self.assertEqual(s["sheets_a"], 5)
+        self.assertEqual(s["sheets_b"], 2)
+
+    def test_suggest_oo_depth_cap(self):
+        s = suggest_oo_sheets(
+            mode="same_sheets",
+            budget_usdc=100,
+            ask_a=100,
+            ct_mult_a=0.01,
+            ask_sz_a=2,
+            ask_b=100,
+            ct_mult_b=0.01,
+            ask_sz_b=50,
+        )
+        self.assertEqual(s["sheets_a"], 2)
+        self.assertEqual(s["sheets_b"], 2)
+
 
 if __name__ == "__main__":
     unittest.main()