Show option net P/L from bid recycle minus premium.

Rename floating P/L to net P/L, align ROI, and display bid depth as price/liquidity for only the levels needed to close.

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

tests/test_options_pricing.py

@@ -196,6 +196,7 @@ def test_estimate_close_by_bids_full_depth():
     assert out["total_received"] == 0.488
     assert out["avg_px"] == 12.2
     assert out["estimated_pnl"] == 0.088
+    assert out["estimated_pnl_ratio_pct"] == 22.0
     assert [x["sheets"] for x in out["levels"]] == [2, 2]
 
 
@@ -206,7 +207,9 @@ def test_estimate_close_by_bids_partial_depth():
     assert out["covered_sheets"] == 1
     assert out["uncovered_sheets"] == 2
     assert out["total_received"] == 0.1
-    assert out["estimated_pnl"] == -0.1
+    # 净盈亏 = 回收 − 全部权利金(不按覆盖比例摊薄)
+    assert out["estimated_pnl"] == -0.5
+    assert out["estimated_pnl_ratio_pct"] == round(-0.5 / 0.6 * 100, 2)
 
 
 def test_estimate_close_by_bids_empty():