Add fixed-direction switch for perp/option open side.

When enabled, lock perp long→buy Put or short→buy Call with ITM/ATM only; off keeps ATM/ask rules.

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

backend/app/api/settings.py

@@ -41,6 +41,8 @@ KEYS = (
     "min_option_leverage",
     "atm_open_offset_enabled",
     "max_atm_open_offset",
+    "fixed_direction_enabled",
+    "fixed_perp_side",
     "close_bid_mark_max_pct",
     "perp_qty_eth",
     "option_qty_eth",
@@ -63,6 +65,8 @@ class StrategySettingsBody(BaseModel):
     min_option_leverage: float | None = Field(default=None, ge=1, le=10000)
     atm_open_offset_enabled: bool | None = None
     max_atm_open_offset: float | None = Field(default=None, ge=0, le=100)
+    fixed_direction_enabled: bool | None = None
+    fixed_perp_side: str | None = Field(default=None, pattern="^(long|short)$")
     close_bid_mark_max_pct: float | None = Field(default=None, ge=1, le=100)
     perp_qty_eth: float | None = Field(default=None, ge=0.01, le=100)
     option_qty_eth: float | None = Field(default=None, ge=0.01, le=100)
@@ -131,6 +135,25 @@ def _read_settings() -> dict:
             db.get_setting("max_atm_open_offset", str(s.max_atm_open_offset))
             or s.max_atm_open_offset
         ),
+        "fixed_direction_enabled": _as_bool(
+            db.get_setting(
+                "fixed_direction_enabled", str(s.fixed_direction_enabled)
+            ),
+            s.fixed_direction_enabled,
+        ),
+        "fixed_perp_side": (
+            side
+            if (
+                side := str(
+                    db.get_setting("fixed_perp_side", s.fixed_perp_side)
+                    or s.fixed_perp_side
+                )
+                .strip()
+                .lower()
+            )
+            in ("long", "short")
+            else "long"
+        ),
         "close_bid_mark_max_pct": float(
             db.get_setting("close_bid_mark_max_pct", str(s.close_bid_mark_max_pct))
             or s.close_bid_mark_max_pct

backend/app/config.py

@@ -72,6 +72,9 @@ class Settings(BaseSettings):
     min_option_leverage: float = 100.0  # 现价/卖一权利金 下限
     atm_open_offset_enabled: bool = False  # 开仓 ATM 偏差限制开关（默认关）
     max_atm_open_offset: float = 3.0  # 开启后：|ATM行权价−标的| 上限（点）
+    # 固定方向：关=现有 ATM/比价规则；开=指定永续多/空，期权 Put/Call 且须实值或平值
+    fixed_direction_enabled: bool = False
+    fixed_perp_side: str = "long"  # long|short；long→买Put，short→买Call
     close_bid_mark_max_pct: float = 30.0  # 平仓：买一相对标记最大偏差%
     perp_qty_eth: float = 1.0
     option_qty_eth: float = 2.0

backend/app/exchange/types.py

@@ -88,7 +88,26 @@ def _open_bias(
     call: Quote | None,
     put: Quote | None,
 ) -> str:
-    """与开仓 decide 一致：先按 ATM 相对现价，贴平时再卖一比价。"""
+    """与开仓 decide 一致；固定方向开启时显示 fixed_*。"""
+    try:
+        from ..config import get_settings
+        from ..models.db import get_db
+
+        s = get_settings()
+        db = get_db()
+        raw = db.get_setting(
+            "fixed_direction_enabled", str(s.fixed_direction_enabled)
+        )
+        on = str(raw or "").strip().lower() in ("1", "true", "yes", "on")
+        if on:
+            side = str(
+                db.get_setting("fixed_perp_side", s.fixed_perp_side)
+                or s.fixed_perp_side
+                or "long"
+            ).strip().lower()
+            return "fixed_long_put" if side == "long" else "fixed_short_call"
+    except Exception:
+        pass
     mark = None
     if index_px is not None and index_px > 0:
         mark = float(index_px)

backend/app/market/instruments.py

@@ -40,6 +40,7 @@ def select_option_pair(
     expiry_ymd: str | None = None,
     min_hours: float | None = None,
     now=None,
+    option_side: str | None = None,
 ) -> OptionPair | None:
     contracts = normalize_contracts(instruments)
     return _select_pair(
@@ -48,6 +49,7 @@ def select_option_pair(
         expiry_ymd=expiry_ymd,
         min_hours=min_hours,
         now=now,
+        option_side=option_side,
     )
 
 

backend/app/models/db.py

@@ -232,6 +232,8 @@ class Database:
                 "min_option_leverage": str(s.min_option_leverage),
                 "atm_open_offset_enabled": str(s.atm_open_offset_enabled),
                 "max_atm_open_offset": str(s.max_atm_open_offset),
+                "fixed_direction_enabled": str(s.fixed_direction_enabled),
+                "fixed_perp_side": str(s.fixed_perp_side),
                 "close_bid_mark_max_pct": str(s.close_bid_mark_max_pct),
                 "perp_qty_eth": str(s.perp_qty_eth),
                 "option_qty_eth": str(s.option_qty_eth),

backend/app/strategy/engine.py

@@ -93,6 +93,16 @@ class StrategyEngine:
         max_atm_off = self.ledger.get_setting_float(
             "max_atm_open_offset", s.max_atm_open_offset
         )
+        fixed_dir_on = self.ledger.get_setting_bool(
+            "fixed_direction_enabled", s.fixed_direction_enabled
+        )
+        fixed_perp = str(
+            self.ledger.get_setting_str("fixed_perp_side", s.fixed_perp_side)
+            or s.fixed_perp_side
+            or "long"
+        ).strip().lower()
+        if fixed_perp not in ("long", "short"):
+            fixed_perp = "long"
         perp_qty = self.ledger.get_setting_float("perp_qty_eth", s.perp_qty_eth)
         opt_qty = self.ledger.get_setting_float("option_qty_eth", s.option_qty_eth)
         rest_until = row["rest_until_ms"]
@@ -136,6 +146,8 @@ class StrategyEngine:
             "min_option_leverage": min_opt_lev,
             "atm_open_offset_enabled": atm_off_on,
             "max_atm_open_offset": max_atm_off,
+            "fixed_direction_enabled": fixed_dir_on,
+            "fixed_perp_side": fixed_perp,
             "can_open": allow_open,
             "open_capacity": open_cap,
             "last_error": last_error,

backend/app/strategy/selection.py

@@ -46,6 +46,46 @@ def pick_atm_strike(strikes: list[float], mark_px: float) -> float | None:
     return min(strikes, key=lambda s: (abs(s - mark_px), s))
 
 
+def pick_itm_or_atm_strike(
+    strikes: list[float],
+    mark_px: float,
+    *,
+    option_side: str,
+) -> float | None:
+    """
+    固定方向选约：只要实值或平值，不要虚值。
+    - Call：行权价 ≤ 标的（平值/实值）
+    - Put：行权价 ≥ 标的（平值/实值）
+    在合格档中取最接近标的者（优先平值）。
+    """
+    if not strikes or mark_px <= 0:
+        return None
+    side = (option_side or "").strip().lower()
+    if side == "call":
+        cands = [float(s) for s in strikes if float(s) <= float(mark_px) + 1e-9]
+    elif side == "put":
+        cands = [float(s) for s in strikes if float(s) >= float(mark_px) - 1e-9]
+    else:
+        return None
+    if not cands:
+        return None
+    return min(cands, key=lambda s: (abs(s - float(mark_px)), s))
+
+
+def is_itm_or_atm(*, option_side: str, strike: float, mark_px: float) -> bool:
+    """Call: K≤S；Put: K≥S。"""
+    if mark_px <= 0:
+        return False
+    side = (option_side or "").strip().lower()
+    k = float(strike)
+    s = float(mark_px)
+    if side == "call":
+        return k <= s + 1e-9
+    if side == "put":
+        return k >= s - 1e-9
+    return False
+
+
 def atm_open_offset(strike: float, mark_px: float) -> float:
     """开仓用：ATM 行权价相对标的的绝对点差。"""
     return abs(float(strike) - float(mark_px))
@@ -125,7 +165,13 @@ def select_option_pair(
     expiry_ymd: str | None = None,
     min_hours: float | None = None,
     now: datetime | None = None,
+    option_side: str | None = None,
 ) -> OptionPair | None:
+    """
+    选到期 + 行权价。
+    option_side 为 call/put 时：按实值/平值选档（固定方向模式）；
+    否则仍选 ATM（现有规则）。
+    """
     complete = _complete_by_expiry(contracts)
     if not complete:
         return None
@@ -148,14 +194,20 @@ def select_option_pair(
             ymd = eligible[0]
 
     ems, strikes_map = complete[ymd]
-    atm = pick_atm_strike(list(strikes_map.keys()), mark_px)
+    side = (option_side or "").strip().lower() or None
-    if atm is None:
+    if side in ("call", "put"):
+        strike = pick_itm_or_atm_strike(
+            list(strikes_map.keys()), mark_px, option_side=side
+        )
+    else:
+        strike = pick_atm_strike(list(strikes_map.keys()), mark_px)
+    if strike is None:
         return None
-    legs = strikes_map[atm]
+    legs = strikes_map[strike]
     return OptionPair(
         expiry_ymd=ymd,
         expiry_ms=ems,
-        strike=atm,
+        strike=strike,
         call_inst_id=legs["C"],
         put_inst_id=legs["P"],
     )

backend/app/strategy/session.py

@@ -16,6 +16,7 @@ from .selection import (
     atm_allows_open,
     atm_open_offset,
     hours_until_expiry,
+    is_itm_or_atm,
     list_eligible_expiry_ymds,
     option_leverage,
     select_option_pair,
@@ -101,6 +102,36 @@ def _strategy_floats() -> tuple[float, float, float, bool]:
         )
 
 
+def _fixed_direction() -> tuple[bool, str]:
+    """(enabled, perp_side long|short)。默认关。"""
+    s = get_settings()
+    try:
+        from ..models.db import get_db
+
+        db = get_db()
+        enabled = _as_bool_setting(
+            db.get_setting(
+                "fixed_direction_enabled", str(s.fixed_direction_enabled)
+            ),
+            s.fixed_direction_enabled,
+        )
+        side = str(
+            db.get_setting("fixed_perp_side", s.fixed_perp_side) or s.fixed_perp_side
+        ).strip().lower()
+        if side not in ("long", "short"):
+            side = "long"
+        return enabled, side
+    except Exception:
+        side = str(s.fixed_perp_side or "long").strip().lower()
+        if side not in ("long", "short"):
+            side = "long"
+        return bool(s.fixed_direction_enabled), side
+
+
+def _option_side_for_perp(perp_side: str) -> str:
+    return "put" if (perp_side or "").strip().lower() == "long" else "call"
+
+
 @dataclass(slots=True)
 class OpenPick:
     pair: OptionPair
@@ -230,19 +261,29 @@ class StrategySession:
         if mark is None or mark <= 0:
             raise RuntimeError("无法获取标的标记/指数价格，无法选 ATM")
         min_hours, _, _, _ = _strategy_floats()
+        fixed_on, fixed_perp = _fixed_direction()
+        opt_side = _option_side_for_perp(fixed_perp) if fixed_on else None
         contracts = self.ex.list_option_contracts(s.option_inst_family)
-        pair = select_option_pair(contracts, mark_px=float(mark), min_hours=min_hours)
+        pair = select_option_pair(
+            contracts,
+            mark_px=float(mark),
+            min_hours=min_hours,
+            option_side=opt_side,
+        )
         if pair is None:
+            kind = f"实值/平值 {opt_side}" if opt_side else "ATM"
             raise RuntimeError(
-                f"未找到剩余≥{min_hours}h 的 ATM Call/Put (family={s.option_inst_family})"
+                f"未找到剩余≥{min_hours}h 的 {kind} Call/Put (family={s.option_inst_family})"
             )
         return self._apply_pair(pair, mark=float(mark), idx=idx)
 
     def pick_for_open(self) -> OpenPick | None:
-        from .signal import decide
+        from .signal import decide, decide_fixed
 
         s = self.settings
         min_hours, min_lev, max_atm_off, atm_off_on = _strategy_floats()
+        fixed_on, fixed_perp = _fixed_direction()
+        opt_side_hint = _option_side_for_perp(fixed_perp) if fixed_on else None
         idx = self.ex.fetch_index(s.index_inst_id)
         mark = self.ex.fetch_mark(s.perp_inst_id) or idx
         if mark is None or mark <= 0:
@@ -255,9 +296,29 @@ class StrategySession:
             return None
 
         for ymd in eligible:
-            pair = select_option_pair(contracts, mark_px=underlying, expiry_ymd=ymd)
+            pair = select_option_pair(
+                contracts,
+                mark_px=underlying,
+                expiry_ymd=ymd,
+                option_side=opt_side_hint,
+            )
             if pair is None:
                 continue
+            if fixed_on:
+                if not is_itm_or_atm(
+                    option_side=opt_side_hint or "",
+                    strike=pair.strike,
+                    mark_px=underlying,
+                ):
+                    logger.info(
+                        "skip expiry=%s strike=%.0f not ITM/ATM for %s mark=%.2f",
+                        ymd,
+                        pair.strike,
+                        opt_side_hint,
+                        underlying,
+                    )
+                    continue
+            else:
                 offset = atm_open_offset(pair.strike, underlying)
                 if not atm_allows_open(
                     pair.strike,
@@ -284,6 +345,9 @@ class StrategySession:
             if put_ask is None:
                 pq = self.ex.quote(pair.put_inst_id)
                 put_ask = pq.ask if pq else None
+            if fixed_on:
+                sig = decide_fixed(call_ask, put_ask, perp_side=fixed_perp)
+            else:
                 sig = decide(
                     call_ask,
                     put_ask,
@@ -376,6 +440,13 @@ class StrategySession:
         mark = mark_px if mark_px is not None else self._mark_for_atm()
         if mark is None or mark <= 0:
             return False
+        fixed_on, fixed_perp = _fixed_direction()
+        if fixed_on:
+            opt = _option_side_for_perp(fixed_perp)
+            if not is_itm_or_atm(
+                option_side=opt, strike=float(self._pair.strike), mark_px=float(mark)
+            ):
+                return True
         return abs(float(self._pair.strike) - float(mark)) >= _ATM_DRIFT_POINTS
 
     async def ensure_atm_async(self, *, force: bool = False) -> OptionPair | None:

backend/app/strategy/signal.py

@@ -66,3 +66,38 @@ def decide(
             put_ask=pa,
         )
     return None
+
+
+def decide_fixed(
+    call_ask: float | None,
+    put_ask: float | None,
+    *,
+    perp_side: str,
+) -> Signal | None:
+    """
+    固定方向：
+    - 永续多 → 买 Put
+    - 永续空 → 买 Call
+    """
+    if call_ask is None or put_ask is None:
+        return None
+    side = (perp_side or "").strip().lower()
+    ca = float(call_ask)
+    pa = float(put_ask)
+    if side == "long":
+        return Signal(
+            bias="fixed_long_put",
+            option_side="put",
+            perp_side="long",
+            call_ask=ca,
+            put_ask=pa,
+        )
+    if side == "short":
+        return Signal(
+            bias="fixed_short_call",
+            option_side="call",
+            perp_side="short",
+            call_ask=ca,
+            put_ask=pa,
+        )
+    return None

backend/tests/test_instruments.py

@@ -27,6 +27,43 @@ def test_pick_atm_strike() -> None:
     assert pick_atm_strike([3400, 3500, 3600], 3510) == 3500
 
 
+def test_pick_itm_or_atm_strike() -> None:
+    from app.strategy.selection import is_itm_or_atm, pick_itm_or_atm_strike
+
+    strikes = [3400, 3500, 3600]
+    # Call：K≤S，现价 3510 → 3500（平值侧最近）
+    assert pick_itm_or_atm_strike(strikes, 3510, option_side="call") == 3500
+    # Put：K≥S，现价 3510 → 3600（实值最近；无 3510 档）
+    assert pick_itm_or_atm_strike(strikes, 3510, option_side="put") == 3600
+    # Put 现价正好 3500 → 平值 3500
+    assert pick_itm_or_atm_strike(strikes, 3500, option_side="put") == 3500
+    assert is_itm_or_atm(option_side="call", strike=3500, mark_px=3510)
+    assert not is_itm_or_atm(option_side="call", strike=3600, mark_px=3510)
+    assert is_itm_or_atm(option_side="put", strike=3600, mark_px=3510)
+    assert not is_itm_or_atm(option_side="put", strike=3400, mark_px=3510)
+
+
+def test_select_option_pair_itm_put() -> None:
+    rows = [
+        {"instId": "ETH-USD_UM-260725-3490-C", "state": "live"},
+        {"instId": "ETH-USD_UM-260725-3490-P", "state": "live"},
+        {"instId": "ETH-USD_UM-260725-3500-C", "state": "live"},
+        {"instId": "ETH-USD_UM-260725-3500-P", "state": "live"},
+        {"instId": "ETH-USD_UM-260725-3510-C", "state": "live"},
+        {"instId": "ETH-USD_UM-260725-3510-P", "state": "live"},
+    ]
+    # 标的 3502：Put 实/平 → 3510（≥3502 最近）
+    pair = select_option_pair(rows, mark_px=3502, expiry_ymd="260725", option_side="put")
+    assert pair is not None
+    assert pair.strike == 3510
+    # Call 实/平 → 3500（≤3502 最近）
+    pair_c = select_option_pair(
+        rows, mark_px=3502, expiry_ymd="260725", option_side="call"
+    )
+    assert pair_c is not None
+    assert pair_c.strike == 3500
+
+
 def test_next_session_expiry_before_open() -> None:
     now = datetime(2026, 7, 24, 15, 0, tzinfo=_SH)
     assert next_session_expiry_ymd(now) == "260724"

backend/tests/test_p1_p2_rules.py

@@ -28,6 +28,26 @@ def test_signal_equal() -> None:
     assert decide(10.0, 10.0) is None
 
 
+def test_decide_fixed_long_put() -> None:
+    from app.strategy.signal import decide_fixed
+
+    s = decide_fixed(20.0, 15.0, perp_side="long")
+    assert s is not None
+    assert s.option_side == "put"
+    assert s.perp_side == "long"
+    assert s.bias == "fixed_long_put"
+
+
+def test_decide_fixed_short_call() -> None:
+    from app.strategy.signal import decide_fixed
+
+    s = decide_fixed(20.0, 15.0, perp_side="short")
+    assert s is not None
+    assert s.option_side == "call"
+    assert s.perp_side == "short"
+    assert s.bias == "fixed_short_call"
+
+
 def test_signal_strike_below_spot_call_short() -> None:
     # 现价 1859、ATM 1850：即使 Put 卖一更高，也走 Call+空
     s = decide(10.0, 20.0, strike=1850, mark_px=1859)

docs/更新说明.md

@@ -5,6 +5,16 @@
 
 ---
 
+## 2026-07-24 — 策略设置：固定方向开关
+
+### 变更
+
+1. 选约增加 **固定方向**（默认关）：开则固定永续多→买 Put，或永续空→买 Call。  
+2. 固定方向开启时，期权只选 **实值或平值**（Call：K≤标的；Put：K≥标的），不买虚值；ATM 偏差限制不适用。  
+3. 关闭时仍按现有 ATM / 卖一比价规则开仓。
+
+---
+
 ## 2026-07-29 — 企微不标模拟盘；已完成组数按已平仓统计
 
 ### 变更

docs/策略说明.md

@@ -39,7 +39,9 @@
 
 永续杠杆默认 **3×**（可配）。同时最多 **1 组**仓，禁止叠仓开下一组。
 
-### 2.1 开仓方向（ATM 相对现价优先）
+### 2.1 开仓方向
+
+#### 默认（`fixed_direction_enabled=false`）：ATM 相对现价优先
 
 行权价相对标的有偏离时（币安粗档常见），**先按 ATM 偏上/偏下选向**；仅当行权价与标的贴平（≈）时，才回退卖一比价。
 
@@ -53,6 +55,17 @@
 
 直觉：偏下行权价用 Call+空，偏上行权价用 Put+多；贴平时再按权利金溢价侧选向。
 
+#### 固定方向（`fixed_direction_enabled=true`）
+
+设置里可开「固定方向」（默认关），并指定永续多或空：
+
+| `fixed_perp_side` | 永续 | 期权 | 行权价约束 | bias |
+|-------------------|------|------|------------|------|
+| `long` | 做多 | 买入 Put | 实值或平值（K ≥ 标的），优先贴近标的 | `fixed_long_put` |
+| `short` | 做空 | 买入 Call | 实值或平值（K ≤ 标的），优先贴近标的 | `fixed_short_call` |
+
+固定方向开启时：**不买虚值**；ATM 偏差限制不适用（由实值/平值规则替代）。
+
 ---
 
 ## 3. 开仓机制
@@ -64,9 +77,9 @@
   → 无持仓且不在休息期
   → 非周末跳过（若开启）
   → 选到期：剩余时长 ≥ min_option_hours（默认 12h）
-  → 该到期 ATM 行权价（最接近标的）
+  → 若固定方向关：该到期 ATM；若开：按 Put/Call 选实值或平值档
-  → 若开启 atm_open_offset_enabled：|ATM − 标的| ≤ max_atm_open_offset（默认 3）否则跳过
+  → 若未开固定方向且开启 atm_open_offset_enabled：|ATM − 标的| ≤ max_atm_open_offset（默认 3）否则跳过
-  → 选向：ATM 偏下→Call+空；偏上→Put+多；贴平→卖一比价
+  → 选向：固定方向按设置；否则 ATM 偏下→Call+空；偏上→Put+多；贴平→卖一比价
   → 期权杠杆 = 标的价 ÷ 卖一权利金 ≥ min_option_leverage（默认 100）
   → 先开期权（吃卖一）→ 再市价开永续（一组）
   → 锁定 initial_premium = 期权成交价 × 期权名义（不含费）
@@ -78,9 +91,11 @@
 |------|------|------|
 | `min_option_hours` | 12 | 过滤过近到期，减少刚开仓就到期 |
 | `min_option_leverage` | 100 | 权利金相对标的不能太贵（现价/卖一） |
-| `atm_open_offset_enabled` | false | 开仓 ATM 偏差限制开关（默认关） |
+| `fixed_direction_enabled` | false | 固定方向开关（默认关） |
+| `fixed_perp_side` | long | 开启后：long=多+Put / short=空+Call |
+| `atm_open_offset_enabled` | false | 开仓 ATM 偏差限制开关（默认关；固定方向开启时忽略） |
 | `max_atm_open_offset` | 3 | 开关开启后：\|ATM − 标的\| 超过则不开 |
-| ATM | — | 同到期、最接近指数/标记价的行权价 |
+| ATM / 实值平值 | — | 默认 ATM；固定方向时同到期实值或平值、最贴近标的 |
 
 无合格合约时：状态停留等待，记录「无合格期权…」，不硬开。
 
@@ -324,6 +339,8 @@
 | `skip_weekends` | true | 时间 |
 | `min_option_hours` | 12 | 选约 |
 | `min_option_leverage` | 100 | 选约 |
+| `fixed_direction_enabled` | false | 固定方向开关 |
+| `fixed_perp_side` | long | 固定永续方向 |
 | `atm_open_offset_enabled` | false | 开仓 ATM 偏差开关 |
 | `max_atm_open_offset` | 3 | 开仓 ATM 偏差上限 |
 | `close_bid_mark_max_pct` | 30 | 平仓流动性 |
@@ -334,6 +351,7 @@
 
 | 日期 | 说明 |
 |------|------|
+| 2026-07-24 | 选约增加固定方向开关：永续多→Put / 空→Call，期权仅实值或平值；关则沿用 ATM/比价 |
 | 2026-07-25 | 初稿：对齐当前开平仓、周末跳过、到期全平、净盈利口径与资金建议 |
 | 2026-07-25 | 平仓顺序改为先期权后永续（与开仓同理：薄腿优先） |
 | 2026-07-26 | 到期按内在价值结算（对齐实盘）；紧急平仓仍用 max(买一,标记,内在价值) |

frontend/src/api/client.ts

@@ -234,6 +234,8 @@ export type PlanState = {
   min_option_leverage: number;
   atm_open_offset_enabled?: boolean;
   max_atm_open_offset?: number;
+  fixed_direction_enabled?: boolean;
+  fixed_perp_side?: "long" | "short";
   can_open: boolean;
   open_capacity?: {
     leverage?: number;
@@ -299,6 +301,29 @@ export type PlanState = {
   live_ready_reason?: string;
 };
 
+export type StrategySettings = {
+  fee_rate: number;
+  exit_mode: "fixed_usdt" | "premium_multiple";
+  net_profit_target: number;
+  premium_exit_multiple: number;
+  rest_seconds: number;
+  live_order_interval_sec?: number;
+  skip_weekends?: boolean;
+  initial_equity?: number;
+  leverage?: number;
+  min_option_hours?: number;
+  min_option_leverage?: number;
+  atm_open_offset_enabled?: boolean;
+  max_atm_open_offset?: number;
+  fixed_direction_enabled?: boolean;
+  fixed_perp_side?: "long" | "short";
+  close_bid_mark_max_pct?: number;
+  perp_qty_eth?: number;
+  option_qty_eth?: number;
+  show_manual_trade_buttons?: boolean;
+  exchange?: string;
+};
+
 export type RuntimeSettings = {
   mode: "SIM" | "LIVE";
   exchange: string;

frontend/src/pages/Plan.tsx

@@ -130,9 +130,13 @@ export default function PlanPage() {
 
   const bias = snap?.ask_compare?.bias;
   const biasTag =
-    bias === "strike_below_spot" || bias === "call_ask_gt_put" ? (
+    bias === "strike_below_spot" ||
+    bias === "call_ask_gt_put" ||
+    bias === "fixed_short_call" ? (
       <span className="tag up">买 Call + 永续空</span>
-    ) : bias === "strike_above_spot" || bias === "put_ask_gt_call" ? (
+    ) : bias === "strike_above_spot" ||
+      bias === "put_ask_gt_call" ||
+      bias === "fixed_long_put" ? (
       <span className="tag down">买 Put + 永续多</span>
     ) : (
       <span className="tag">等待 / 相等</span>
@@ -149,7 +153,11 @@ export default function PlanPage() {
       ? `权利金×${fmt(plan?.premium_exit_multiple ?? 1, 2)}`
       : `固定 ${fmt(plan?.net_profit_target ?? 15)} U`;
   const phaseLabel = PHASE_ZH[plan?.phase || ""] || plan?.phase || "—";
-  const atmRule = plan?.atm_open_offset_enabled
+  const atmRule = plan?.fixed_direction_enabled
+    ? plan?.fixed_perp_side === "short"
+      ? "固定：永续空+买Call(实/平)"
+      : "固定：永续多+买Put(实/平)"
+    : plan?.atm_open_offset_enabled
       ? `ATM偏差≤${fmt(plan?.max_atm_open_offset ?? 3, 0)}`
       : "ATM偏差关";
   const exitDetail =
@@ -337,7 +345,11 @@ export default function PlanPage() {
                 <span className="mono">
                   剩余≥{fmt(plan?.min_option_hours, 0)}h · 期权杠杆≥
                   {fmt(plan?.min_option_leverage, 0)}x
-                  {plan?.atm_open_offset_enabled
+                  {plan?.fixed_direction_enabled
+                    ? plan?.fixed_perp_side === "short"
+                      ? " · 固定空+Call(实/平)"
+                      : " · 固定多+Put(实/平)"
+                    : plan?.atm_open_offset_enabled
                       ? ` · ATM偏差≤${fmt(plan?.max_atm_open_offset ?? 3, 0)}`
                       : " · ATM偏差关"}
                 </span>

frontend/src/pages/Settings.tsx

@@ -74,6 +74,8 @@ export default function SettingsPage() {
   const [minOptLev, setMinOptLev] = useState(100);
   const [atmOffOn, setAtmOffOn] = useState(false);
   const [maxAtmOff, setMaxAtmOff] = useState(3);
+  const [fixedDirOn, setFixedDirOn] = useState(false);
+  const [fixedPerpSide, setFixedPerpSide] = useState<"long" | "short">("long");
   const [closeDevPct, setCloseDevPct] = useState(30);
   const [perpQty, setPerpQty] = useState(1);
   const [optQty, setOptQty] = useState(2);
@@ -158,6 +160,8 @@ export default function SettingsPage() {
         setMinOptLev(s.min_option_leverage ?? 100);
         setAtmOffOn(s.atm_open_offset_enabled === true);
         setMaxAtmOff(s.max_atm_open_offset ?? 3);
+        setFixedDirOn(s.fixed_direction_enabled === true);
+        setFixedPerpSide(s.fixed_perp_side === "short" ? "short" : "long");
         setCloseDevPct(s.close_bid_mark_max_pct ?? 30);
         setPerpQty(s.perp_qty_eth ?? 1);
         setOptQty(s.option_qty_eth ?? 2);
@@ -302,6 +306,8 @@ export default function SettingsPage() {
         min_option_leverage: minOptLev,
         atm_open_offset_enabled: atmOffOn,
         max_atm_open_offset: maxAtmOff,
+        fixed_direction_enabled: fixedDirOn,
+        fixed_perp_side: fixedPerpSide,
         close_bid_mark_max_pct: closeDevPct,
         perp_qty_eth: perpQty,
         option_qty_eth: optQty,
@@ -610,11 +616,41 @@ export default function SettingsPage() {
                       onChange={(e) => setMinOptLev(Number(e.target.value))}
                     />
                   </div>
+                  <div className="field">
+                    <label htmlFor="fixedDirOn">固定方向</label>
+                    <select
+                      id="fixedDirOn"
+                      className="mono"
+                      value={fixedDirOn ? "1" : "0"}
+                      onChange={(e) => setFixedDirOn(e.target.value === "1")}
+                    >
+                      <option value="0">关闭（默认，按现有规则）</option>
+                      <option value="1">开启</option>
+                    </select>
+                  </div>
+                  <div className="field">
+                    <label htmlFor="fixedPerp">固定永续方向</label>
+                    <select
+                      id="fixedPerp"
+                      className="mono"
+                      disabled={!fixedDirOn}
+                      value={fixedPerpSide}
+                      onChange={(e) =>
+                        setFixedPerpSide(
+                          e.target.value === "short" ? "short" : "long",
+                        )
+                      }
+                    >
+                      <option value="long">永续多 · 买 Put（实值/平值）</option>
+                      <option value="short">永续空 · 买 Call（实值/平值）</option>
+                    </select>
+                  </div>
                   <div className="field">
                     <label htmlFor="atmoffOn">开仓 ATM 偏差限制</label>
                     <select
                       id="atmoffOn"
                       className="mono"
+                      disabled={fixedDirOn}
                       value={atmOffOn ? "1" : "0"}
                       onChange={(e) => setAtmOffOn(e.target.value === "1")}
                     >
@@ -630,7 +666,7 @@ export default function SettingsPage() {
                       type="number"
                       step="0.5"
                       min="0"
-                      disabled={!atmOffOn}
+                      disabled={!atmOffOn || fixedDirOn}
                       value={maxAtmOff}
                       onChange={(e) => setMaxAtmOff(Number(e.target.value))}
                     />
@@ -803,11 +839,15 @@ export default function SettingsPage() {
                 {stratSub === "select" ? (
                   <>
                     <li>
-                      开仓 ATM 偏差限制：关闭时不限制 |ATM −
+                      固定方向：默认关。开启后固定永续多→买 Put，或永续空→买
+                      Call；期权只选实值或平值，不买虚值。关闭时仍按 ATM/卖一比价规则。
+                    </li>
+                    <li>
+                      开仓 ATM 偏差限制：固定方向开启时不适用。关闭时不限制 |ATM −
                       现价|；开启后超过下方点数则不开仓。
                     </li>
                     <li>
-                      开仓 ATM 最大偏差：仅开关开启时生效。币安行权价较粗时可能长时间无开仓机会。
+                      开仓 ATM 最大偏差：仅开关开启且未开固定方向时生效。币安行权价较粗时可能长时间无开仓机会。
                     </li>
                   </>
                 ) : null}