Reject OO strikes more than 1% from amplitude high/low.

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

backend/app/api/settings.py

@@ -71,6 +71,7 @@ KEYS = (
     "oo_min_leverage",
     "oo_reward_ratio",
     "oo_budget_cushion",
+    "oo_strike_max_dev_pct",
 )
 
 
@@ -126,6 +127,7 @@ class StrategySettingsBody(BaseModel):
     oo_min_leverage: float | None = Field(default=None, ge=1, le=10000)
     oo_reward_ratio: float | None = Field(default=None, ge=0.5, le=20)
     oo_budget_cushion: float | None = Field(default=None, ge=0.5, le=1.0)
+    oo_strike_max_dev_pct: float | None = Field(default=None, ge=0.1, le=10)
 
 
 def _as_bool(raw: str | None, default: bool) -> bool:
@@ -379,6 +381,12 @@ def _read_settings() -> dict:
             db.get_setting("oo_budget_cushion", str(s.oo_budget_cushion))
             or s.oo_budget_cushion
         ),
+        "oo_strike_max_dev_pct": float(
+            db.get_setting(
+                "oo_strike_max_dev_pct", str(s.oo_strike_max_dev_pct)
+            )
+            or s.oo_strike_max_dev_pct
+        ),
         "risk_sizing_preview": _risk_preview_safe(),
         "exchange": rt.exchange,
         "perp_inst_id": rt.perp_inst_id,
@@ -472,6 +480,7 @@ async def put_strategy_settings(
             "oo_min_leverage",
             "oo_reward_ratio",
             "oo_budget_cushion",
+            "oo_strike_max_dev_pct",
         )
         hit = [k for k in locked_keys if k in data]
         if hit: