feat: options sheet sizing, ITM/OTM labels, and 14-day chain view

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

lib/options/options_pricing_lib.py

@@ -50,16 +50,19 @@ def calc_order_size(
     budget_usdc: float | None = None,
     budget_buffer: float = 0.95,
     eth_amount: float | None = None,
+    sheets: int | None = None,
     budget_cap: float | None = None,
 ) -> dict[str, Any]:
     """
     返回 sheets, eth_amount, total_premium。
-    mode: budget_full 或 eth_amount。
+    mode: budget_full / eth_amount / sheets。
     """
     if quote_per_unit <= 0:
         return {"ok": False, "msg": "卖一价无效", "sheets": 0, "eth_amount": 0.0, "total_premium": 0.0}
 
-    if eth_amount is not None and eth_amount > 0:
+    if sheets is not None and int(sheets) > 0:
+        sheets = int(sheets)
+    elif eth_amount is not None and eth_amount > 0:
         sheets = sheets_from_eth_amount(eth_amount, ct_mult)
     elif budget_usdc is not None and budget_usdc > 0:
         eff = float(budget_usdc) * float(budget_buffer)
@@ -68,7 +71,7 @@ def calc_order_size(
             return {"ok": False, "msg": "无法计算单张权利金", "sheets": 0, "eth_amount": 0.0, "total_premium": 0.0}
         sheets = int(math.floor(eff / per_sheet))
     else:
-        return {"ok": False, "msg": "请指定预算或 ETH 数量", "sheets": 0, "eth_amount": 0.0, "total_premium": 0.0}
+        return {"ok": False, "msg": "请指定预算、币数量或张数", "sheets": 0, "eth_amount": 0.0, "total_premium": 0.0}
 
     if sheets < min_sz:
         per = premium_per_sheet(quote_per_unit, ct_mult)
@@ -110,3 +113,22 @@ def is_shallow_itm(
             return False
         return (strike - index_px) <= max_dist_usd
     return False
+
+
+def option_moneyness(*, opt_type: str, strike: float, index_px: float) -> str:
+    """返回 itm / otm / atm。"""
+    o = (opt_type or "").upper()
+    if strike is None or index_px is None or index_px <= 0:
+        return "unknown"
+    atm_band = max(index_px * 0.002, 2.0)
+    if abs(strike - index_px) <= atm_band:
+        return "atm"
+    if o == "C":
+        return "itm" if strike < index_px else "otm"
+    if o == "P":
+        return "itm" if strike > index_px else "otm"
+    return "unknown"
+
+
+def option_moneyness_label(moneyness: str) -> str:
+    return {"itm": "实值", "otm": "虚值", "atm": "平值"}.get((moneyness or "").lower(), "")