Restructure Plan UI for semi-auto tabs and T-quote ladder.

Hide amplitude card when filter off; compact semi form with rules; monitor tab keeps positions and market.

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

backend/app/api/market.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from typing import Annotated
 
-from fastapi import APIRouter, Depends, HTTPException
+from fastapi import APIRouter, Depends, HTTPException, Query
 
 from ..market import get_gateway
 from .auth import require_user
@@ -18,6 +18,19 @@ async def market_snapshot(_user: Annotated[str, Depends(require_user)]) -> dict:
     return snap
 
 
+@router.get("/option-ladder")
+async def market_option_ladder(
+    _user: Annotated[str, Depends(require_user)],
+    wings: int = Query(default=4, ge=1, le=12),
+) -> dict:
+    """半自动页 T 型报价：ATM 上下各 wings 档。"""
+    gw = get_gateway()
+    ladder = getattr(gw, "option_ladder", None)
+    if not callable(ladder):
+        raise HTTPException(status_code=501, detail="当前会话不支持 option-ladder")
+    return ladder(wings=wings)
+
+
 @router.post("/realign")
 async def market_realign(_user: Annotated[str, Depends(require_user)]) -> dict:
     """手动重对齐次日到期 ATM 合约（运维/调试用）。"""