Add 永期半自动: human arm, machine open/close, then stop.

Settings toggle, Plan panel, Fleet monitor, exit locks and armed TOCTOU gates; docs and dual audits.

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

backend/app/strategy/session.py

@@ -721,10 +721,22 @@ class StrategySession:
 
     def _pick_for_open_perp(self) -> OpenPick | None:
         from .signal import decide, decide_fixed
+        from .semi_auto import is_armed, is_semi_auto, read_semi_params
 
         s = self.settings
         min_hours, min_lev, max_atm_off, atm_off_on = _strategy_floats()
         fixed_on, fixed_perp = _fixed_direction()
+        # 半自动：强制看法方向 + 实值/平值 + 半自动选约门槛（须已授权）
+        semi_on = is_semi_auto()
+        if semi_on:
+            if not is_armed():
+                return None
+            sp = read_semi_params()
+            fixed_on = True
+            fixed_perp = str(sp["perp_side"])
+            min_hours = float(sp["min_option_hours"])
+            min_lev = float(sp["min_option_leverage"])
+            atm_off_on = False
         opt_side_hint = _option_side_for_perp(fixed_perp) if fixed_on else None
         # 第一关：振幅过滤（默认关；开启则回看窗振幅须 ≤ 最大%）
         if not self._apply_amplitude_first_gate():