完善AI策略手册防未来函数规则

crates/fidc-core/src/platform_expr_strategy.rs

@@ -3100,8 +3100,7 @@ impl PlatformExprStrategy {
                 '(' => {
                     let next_depth = paren_depth + 1;
                     paren_depth += 1;
-                    if next_depth == ternary_paren_depth && brace_depth == 0 && bracket_depth == 0
-                    {
+                    if next_depth == ternary_paren_depth && brace_depth == 0 && bracket_depth == 0 {
                         start = idx + ch.len_utf8();
                     }
                 }
@@ -4373,7 +4372,8 @@ impl PlatformExprStrategy {
     fn stop_take_action(
         &self,
         ctx: &StrategyContext<'_>,
-        date: NaiveDate,
+        signal_date: NaiveDate,
+        execution_date: NaiveDate,
         day: &DayExpressionState,
         symbol: &str,
     ) -> Result<(bool, bool), BacktestError> {
@@ -4388,7 +4388,7 @@ impl PlatformExprStrategy {
         if position.quantity == 0 || position.average_cost <= 0.0 {
             return Ok((false, false));
         }
-        let stock = match self.stock_state(ctx, date, symbol) {
+        let stock = match self.stock_state(ctx, signal_date, symbol) {
             Ok(stock) => stock,
             Err(BacktestError::Data(crate::data::DataSetError::MissingSnapshot { .. })) => {
                 return Ok((false, false));
@@ -4415,9 +4415,9 @@ impl PlatformExprStrategy {
             prev_close: stock.prev_close,
             holding_return,
             quantity: position.quantity as i64,
-            sellable_qty: position.sellable_qty(date) as i64,
-            sellable: position.sellable_qty(date) as i64,
-            closable: position.sellable_qty(date) as i64,
+            sellable_qty: position.sellable_qty(execution_date) as i64,
+            sellable: position.sellable_qty(execution_date) as i64,
+            closable: position.sellable_qty(execution_date) as i64,
             old_quantity: position.day_start_quantity() as i64,
             bought_quantity: position.bought_quantity() as i64,
             sold_quantity: position.sold_quantity() as i64,
@@ -4471,12 +4471,12 @@ impl PlatformExprStrategy {
                 boolean
             } else if let Some(multiplier) = take_result.clone().try_cast::<f64>() {
                 !ctx.data
-                    .require_market(date, symbol)?
+                    .require_market(signal_date, symbol)?
                     .is_at_upper_limit_price(current_price)
                     && current_price / position.average_cost > multiplier
             } else if let Some(multiplier) = take_result.try_cast::<i64>() {
                 !ctx.data
-                    .require_market(date, symbol)?
+                    .require_market(signal_date, symbol)?
                     .is_at_upper_limit_price(current_price)
                     && current_price / position.average_cost > multiplier as f64
             } else {
@@ -4506,8 +4506,9 @@ impl Strategy for PlatformExprStrategy {
     }
 
     fn on_day(&mut self, ctx: &StrategyContext<'_>) -> Result<StrategyDecision, BacktestError> {
-        let date = ctx.execution_date;
-        if self.config.in_skip_window(date) {
+        let execution_date = ctx.execution_date;
+        let decision_date = ctx.decision_date;
+        if self.config.in_skip_window(execution_date) {
             return Ok(StrategyDecision {
                 rebalance: false,
                 target_weights: BTreeMap::new(),
@@ -4523,17 +4524,17 @@ impl Strategy for PlatformExprStrategy {
                         reason: "seasonal_stop_window".to_string(),
                     })
                     .collect(),
-                notes: vec![format!("seasonal stop window on {}", date)],
+                notes: vec![format!("seasonal stop window on {}", execution_date)],
                 diagnostics: vec!["platform expr skip window forced all cash".to_string()],
             });
         }
 
-        let day = self.day_state(ctx, date)?;
+        let day = self.day_state(ctx, decision_date)?;
         let (explicit_action_intents, explicit_action_diagnostics) =
             if self.config.explicit_action_stage == PlatformExplicitActionStage::OnDay
-                && self.explicit_actions_active(ctx.data.calendar(), date)
+                && self.explicit_actions_active(ctx.data.calendar(), execution_date)
             {
-                self.explicit_action_intents(ctx, date, &day)?
+                self.explicit_action_intents(ctx, decision_date, &day)?
             } else {
                 (Vec::new(), Vec::new())
             };
@@ -4555,8 +4556,14 @@ impl Strategy for PlatformExprStrategy {
             0
         };
         let stock_list = if self.config.rotation_enabled {
-            let (stock_list, notes) =
-                self.select_symbols(ctx, date, &day, band_low, band_high, selection_limit)?;
+            let (stock_list, notes) = self.select_symbols(
+                ctx,
+                decision_date,
+                &day,
+                band_low,
+                band_high,
+                selection_limit,
+            )?;
             selection_notes = notes;
             stock_list
         } else {
@@ -4566,7 +4573,7 @@ impl Strategy for PlatformExprStrategy {
             if let Some(schedule) = &self.config.rebalance_schedule {
                 schedule.matches(
                     ctx.data.calendar(),
-                    date,
+                    execution_date,
                     ScheduleStage::OnDay,
                     default_stage_time(ScheduleStage::OnDay),
                 )
@@ -4586,8 +4593,8 @@ impl Strategy for PlatformExprStrategy {
                 continue;
             }
             let (stop_hit, profit_hit) =
-                self.stop_take_action(ctx, date, &day, &position.symbol)?;
-            let can_sell = self.can_sell_position(ctx, date, &position.symbol);
+                self.stop_take_action(ctx, decision_date, execution_date, &day, &position.symbol)?;
+            let can_sell = self.can_sell_position(ctx, execution_date, &position.symbol);
             if stop_hit || profit_hit {
                 let sell_reason = if stop_hit {
                     "stop_loss_exit"
@@ -4604,7 +4611,7 @@ impl Strategy for PlatformExprStrategy {
                     self.project_target_zero(
                         ctx,
                         &mut projected,
-                        date,
+                        execution_date,
                         &position.symbol,
                         &mut projected_execution_state,
                     );
@@ -4621,18 +4628,24 @@ impl Strategy for PlatformExprStrategy {
                             {
                                 continue;
                             }
-                            let stock = self.stock_state(ctx, date, symbol)?;
+                            let decision_stock = self.stock_state(ctx, decision_date, symbol)?;
+                            let execution_stock = self.stock_state(ctx, execution_date, symbol)?;
                             if self
-                                .buy_rejection_reason(ctx, date, symbol, &stock)?
+                                .buy_rejection_reason(
+                                    ctx,
+                                    execution_date,
+                                    symbol,
+                                    &execution_stock,
+                                )?
                                 .is_some()
                             {
                                 continue;
                             }
-                            if !self.stock_passes_expr(ctx, &day, &stock)? {
+                            if !self.stock_passes_expr(ctx, &day, &decision_stock)? {
                                 continue;
                             }
                             let replacement_cash =
-                                replacement_cash * self.buy_scale(ctx, &day, &stock)?;
+                                replacement_cash * self.buy_scale(ctx, &day, &decision_stock)?;
                             if replacement_cash <= 0.0 {
                                 continue;
                             }
@@ -4644,7 +4657,7 @@ impl Strategy for PlatformExprStrategy {
                             self.project_order_value(
                                 ctx,
                                 &mut projected,
-                                date,
+                                execution_date,
                                 symbol,
                                 replacement_cash,
                                 &mut projected_execution_state,
@@ -4666,7 +4679,7 @@ impl Strategy for PlatformExprStrategy {
                 if stock_list.iter().any(|candidate| candidate == symbol) {
                     continue;
                 }
-                if !self.can_sell_position(ctx, date, symbol) {
+                if !self.can_sell_position(ctx, execution_date, symbol) {
                     continue;
                 }
                 order_intents.push(OrderIntent::TargetValue {
@@ -4677,7 +4690,7 @@ impl Strategy for PlatformExprStrategy {
                 self.project_target_zero(
                     ctx,
                     &mut projected,
-                    date,
+                    execution_date,
                     symbol,
                     &mut projected_execution_state,
                 );
@@ -4693,17 +4706,18 @@ impl Strategy for PlatformExprStrategy {
                 {
                     continue;
                 }
-                let stock = self.stock_state(ctx, date, symbol)?;
+                let decision_stock = self.stock_state(ctx, decision_date, symbol)?;
+                let execution_stock = self.stock_state(ctx, execution_date, symbol)?;
                 if self
-                    .buy_rejection_reason(ctx, date, symbol, &stock)?
+                    .buy_rejection_reason(ctx, execution_date, symbol, &execution_stock)?
                     .is_some()
                 {
                     continue;
                 }
-                if !self.stock_passes_expr(ctx, &day, &stock)? {
+                if !self.stock_passes_expr(ctx, &day, &decision_stock)? {
                     continue;
                 }
-                let buy_cash = fixed_buy_cash * self.buy_scale(ctx, &day, &stock)?;
+                let buy_cash = fixed_buy_cash * self.buy_scale(ctx, &day, &decision_stock)?;
                 if buy_cash <= 0.0 {
                     continue;
                 }
@@ -4715,7 +4729,7 @@ impl Strategy for PlatformExprStrategy {
                 self.project_order_value(
                     ctx,
                     &mut projected,
-                    date,
+                    execution_date,
                     symbol,
                     buy_cash,
                     &mut projected_execution_state,
@@ -4748,13 +4762,15 @@ impl Strategy for PlatformExprStrategy {
                 )
             },
             format!(
-                "selected={} periodic_rebalance={} exits={} projected_positions={} intents={} limit={}",
+                "selected={} periodic_rebalance={} exits={} projected_positions={} intents={} limit={} decision_date={} execution_date={}",
                 stock_list.len(),
                 periodic_rebalance,
                 exit_symbols.len(),
                 projected.positions().len(),
                 order_intents.len(),
-                selection_limit
+                selection_limit,
+                decision_date,
+                execution_date
             ),
             "platform strategy script executed through expression runtime + bid1/ask1 snapshot execution".to_string(),
         ];
@@ -5552,6 +5568,179 @@ mod tests {
         );
     }
 
+    #[test]
+    fn platform_strategy_uses_decision_date_for_next_bar_open_signals() {
+        let decision_date = d(2025, 2, 3);
+        let execution_date = d(2025, 2, 4);
+        let symbol = "000001.SZ";
+        let data = DataSet::from_components(
+            vec![Instrument {
+                symbol: symbol.to_string(),
+                name: "Decision Date Stock".to_string(),
+                board: "SZ".to_string(),
+                round_lot: 100,
+                listed_at: Some(d(2020, 1, 1)),
+                delisted_at: None,
+                status: "active".to_string(),
+            }],
+            vec![
+                DailyMarketSnapshot {
+                    date: decision_date,
+                    symbol: symbol.to_string(),
+                    timestamp: Some("2025-02-03 10:18:00".to_string()),
+                    day_open: 10.0,
+                    open: 10.0,
+                    high: 10.5,
+                    low: 9.8,
+                    close: 10.0,
+                    last_price: 10.0,
+                    bid1: 9.99,
+                    ask1: 10.01,
+                    prev_close: 9.9,
+                    volume: 1_000_000,
+                    tick_volume: 10_000,
+                    bid1_volume: 2_000,
+                    ask1_volume: 2_000,
+                    trading_phase: Some("continuous".to_string()),
+                    paused: false,
+                    upper_limit: 11.0,
+                    lower_limit: 9.0,
+                    price_tick: 0.01,
+                },
+                DailyMarketSnapshot {
+                    date: execution_date,
+                    symbol: symbol.to_string(),
+                    timestamp: Some("2025-02-04 10:18:00".to_string()),
+                    day_open: 12.0,
+                    open: 12.0,
+                    high: 101.0,
+                    low: 11.8,
+                    close: 100.0,
+                    last_price: 100.0,
+                    bid1: 99.99,
+                    ask1: 100.01,
+                    prev_close: 10.0,
+                    volume: 1_000_000,
+                    tick_volume: 10_000,
+                    bid1_volume: 2_000,
+                    ask1_volume: 2_000,
+                    trading_phase: Some("continuous".to_string()),
+                    paused: false,
+                    upper_limit: 110.0,
+                    lower_limit: 9.0,
+                    price_tick: 0.01,
+                },
+            ],
+            vec![
+                DailyFactorSnapshot {
+                    date: decision_date,
+                    symbol: symbol.to_string(),
+                    market_cap_bn: 12.0,
+                    free_float_cap_bn: 10.0,
+                    pe_ttm: 8.0,
+                    turnover_ratio: Some(1.0),
+                    effective_turnover_ratio: Some(1.0),
+                    extra_factors: BTreeMap::new(),
+                },
+                DailyFactorSnapshot {
+                    date: execution_date,
+                    symbol: symbol.to_string(),
+                    market_cap_bn: 12.0,
+                    free_float_cap_bn: 10.0,
+                    pe_ttm: 8.0,
+                    turnover_ratio: Some(1.0),
+                    effective_turnover_ratio: Some(1.0),
+                    extra_factors: BTreeMap::new(),
+                },
+            ],
+            vec![
+                CandidateEligibility {
+                    date: decision_date,
+                    symbol: symbol.to_string(),
+                    is_st: false,
+                    is_new_listing: false,
+                    is_paused: false,
+                    allow_buy: true,
+                    allow_sell: true,
+                    is_kcb: false,
+                    is_one_yuan: false,
+                },
+                CandidateEligibility {
+                    date: execution_date,
+                    symbol: symbol.to_string(),
+                    is_st: false,
+                    is_new_listing: false,
+                    is_paused: false,
+                    allow_buy: true,
+                    allow_sell: true,
+                    is_kcb: false,
+                    is_one_yuan: false,
+                },
+            ],
+            vec![
+                BenchmarkSnapshot {
+                    date: decision_date,
+                    benchmark: "000852.SH".to_string(),
+                    open: 1000.0,
+                    close: 1002.0,
+                    prev_close: 998.0,
+                    volume: 1_000_000,
+                },
+                BenchmarkSnapshot {
+                    date: execution_date,
+                    benchmark: "000852.SH".to_string(),
+                    open: 1002.0,
+                    close: 1004.0,
+                    prev_close: 1002.0,
+                    volume: 1_000_000,
+                },
+            ],
+        )
+        .expect("dataset");
+        let portfolio = PortfolioState::new(30_000.0);
+        let subscriptions = BTreeSet::new();
+        let ctx = StrategyContext {
+            execution_date,
+            decision_date,
+            decision_index: 1,
+            data: &data,
+            portfolio: &portfolio,
+            futures_account: None,
+            open_orders: &[],
+            dynamic_universe: None,
+            subscriptions: &subscriptions,
+            process_events: &[],
+            active_process_event: None,
+            active_datetime: None,
+            order_events: &[],
+            fills: &[],
+        };
+        let mut cfg = PlatformExprStrategyConfig::microcap_rotation();
+        cfg.signal_symbol = symbol.to_string();
+        cfg.refresh_rate = 1;
+        cfg.max_positions = 1;
+        cfg.benchmark_short_ma_days = 1;
+        cfg.benchmark_long_ma_days = 1;
+        cfg.stock_short_ma_days = 1;
+        cfg.stock_mid_ma_days = 1;
+        cfg.stock_long_ma_days = 1;
+        cfg.market_cap_lower_expr = "0".to_string();
+        cfg.market_cap_upper_expr = "100".to_string();
+        cfg.selection_limit_expr = "1".to_string();
+        cfg.stock_filter_expr = "close > 50".to_string();
+        let mut strategy = PlatformExprStrategy::new(cfg);
+
+        let decision = strategy.on_day(&ctx).expect("platform decision");
+
+        assert!(decision.order_intents.is_empty());
+        assert!(
+            decision
+                .diagnostics
+                .iter()
+                .any(|item| item.contains("selected=0"))
+        );
+    }
+
     #[test]
     fn platform_helpers_support_generic_rolling_stats_and_normalized_factors() {
         let dates = [d(2025, 1, 2), d(2025, 1, 3), d(2025, 1, 6)];

crates/fidc-core/src/strategy_ai.rs

@@ -101,6 +101,7 @@ pub fn built_in_strategy_manual() -> StrategyAiManual {
             "AI 生成策略时只能输出完整 engine-script 代码，不输出 Markdown、解释、推理过程、JSON 包装或手册复述。".to_string(),
             "表达式字段以运行时字段为准：市值使用 market_cap，流通市值使用 free_float_cap；不要在策略表达式中使用数据库原始字段 float_market_cap。".to_string(),
             "任意窗口价格均线使用 rolling_mean(\"close\", n) 或 ma(\"close\", n)，任意窗口均量使用 rolling_mean(\"volume\", n) 或 vma(n)；不要使用未列出的 ma60、stock_ma60、signal_ma60 或 benchmark_ma60 变量。".to_string(),
+            "next_bar_open 会用决策日信号生成订单，并在下一可交易开盘撮合；不得把执行日 open/high/low/close 当成下单前已知信息。".to_string(),
             "自定义 fn 必须通过参数传入运行时字段；不要用 fn score() 这类零参数函数直接引用 market_cap、close、ma5 等股票字段。".to_string(),
             "禁止自由 Python/JavaScript 命令式语句，最终必须输出平台 DSL。".to_string(),
         ],
@@ -165,6 +166,10 @@ pub fn built_in_strategy_manual() -> StrategyAiManual {
                 title: "诊断解释".to_string(),
                 detail: "结果为空或收益异常时优先展示 diagnostics、选股数量、过滤原因、缺失字段、窗口不足、涨跌停/停牌拒单、快照缓存命中情况。不要只返回 JSON；要给用户自然语言结论和下一步优化建议。".to_string(),
             },
+            ManualSection {
+                title: "收益合理性复核".to_string(),
+                detail: "展示或用于优化前，应按 finalEquity / initialCash - 1 复算总收益。若小资金回测出现极端收益、指标与资金不一致、或历史 run 来自旧引擎，应检查交易明细并用当前编译后的回测引擎重新回测，不要把异常 run 当成成功样本。".to_string(),
+            },
         ],
         optimization_playbook: vec![
             ManualSection {
@@ -215,7 +220,7 @@ pub fn built_in_strategy_manual() -> StrategyAiManual {
             },
             ManualSection {
                 title: "execution.matching_type / execution.slippage".to_string(),
-                detail: "设置撮合模式和滑点。支持 execution.matching_type(\"next_tick_last\" | \"next_tick_best_own\" | \"next_tick_best_counterparty\" | \"counterparty_offer\" | \"vwap\" | \"current_bar_close\" | \"next_bar_open\" | \"open_auction\")。其中 next_tick_last 使用 tick 的 last_price；next_tick_best_own / next_tick_best_counterparty 会按 L1 买一卖一近似 平台内核 的 tick 最优价语义；counterparty_offer 在存在 order_book_depth 多档盘口数据时会按真实档位逐档扫单并计算加权成交价，不存在 depth 时回退 L1 对手方报价；vwap 会在盘中执行价链路上聚合多笔成交为单条 VWAP 成交；open_auction 使用当日集合竞价开盘价 day_open 进行撮合，且不额外施加滑点，并按竞价成交量而不是盘口一档流动性限制成交；滑点支持 execution.slippage(\"none\") / execution.slippage(\"price_ratio\", 0.001) / execution.slippage(\"tick_size\", 1) / execution.slippage(\"limit_price\")，其中 limit_price 会在限价单成交时按挂单价模拟 平台内核 的最坏成交价。".to_string(),
+                detail: "设置撮合模式和滑点。支持 execution.matching_type(\"next_tick_last\" | \"next_tick_best_own\" | \"next_tick_best_counterparty\" | \"counterparty_offer\" | \"vwap\" | \"current_bar_close\" | \"next_bar_open\" | \"open_auction\")。其中 next_tick_last 使用 tick 的 last_price；next_tick_best_own / next_tick_best_counterparty 会按 L1 买一卖一近似 平台内核 的 tick 最优价语义；counterparty_offer 在存在 order_book_depth 多档盘口数据时会按真实档位逐档扫单并计算加权成交价，不存在 depth 时回退 L1 对手方报价；vwap 会在盘中执行价链路上聚合多笔成交为单条 VWAP 成交；next_bar_open 使用决策日信号并在下一可交易日开盘撮合，禁止把执行日 open/high/low/close 解释为下单前已知数据；open_auction 使用当日集合竞价开盘价 day_open 进行撮合，且不额外施加滑点，并按竞价成交量而不是盘口一档流动性限制成交；滑点支持 execution.slippage(\"none\") / execution.slippage(\"price_ratio\", 0.001) / execution.slippage(\"tick_size\", 1) / execution.slippage(\"limit_price\")，其中 limit_price 会在限价单成交时按挂单价模拟 平台内核 的最坏成交价。".to_string(),
             },
             ManualSection {
                 title: "期货提交校验".to_string(),
@@ -433,7 +438,12 @@ pub fn render_manual_markdown(manual: &StrategyAiManual) -> String {
     out.push_str("- 任意窗口价格均线使用 `rolling_mean(\"close\", n)` 或 `ma(\"close\", n)`；任意窗口均量使用 `rolling_mean(\"volume\", n)` 或 `vma(n)`；不要使用未列出的 `ma60`、`stock_ma60`、`signal_ma60` 或 `benchmark_ma60` 变量。\n");
     out.push_str("- 自定义 `fn` 必须通过参数传入运行时字段；不要用 `fn score()` 这类零参数函数直接引用 `market_cap`、`close`、`ma5` 等股票字段。\n");
     out.push_str("- `selection.market_cap_band` 必须写命名参数：`field=\"market_cap\"` 或 `field=\"free_float_cap\"`，并包含 `lower=...` 与 `upper=...`。\n");
-    out.push_str("- `risk.index_exposure(...)` 只能传一个表达式；`execution.matching_type(...)` 和 `execution.slippage(...)` 必须使用手册列出的合法取值。\n\n");
+    out.push_str(
+        "- `risk.index_exposure(...)` 只能传一个表达式；不要生成 `risk.exposure(...)`。\n",
+    );
+    out.push_str("- 完整三元表达式 `cond ? a : b` 可在表达式参数中使用；若当前运行环境报 `Unknown operator: '?'`，先重编译并重启回测服务，不要改写策略语义掩盖运行时漂移。\n");
+    out.push_str("- `next_bar_open` 的选股、排序和仓位信号来自决策日，订单在下一可交易开盘撮合；不要使用执行日价格作为下单前信号。\n");
+    out.push_str("- `execution.matching_type(...)` 和 `execution.slippage(...)` 必须使用手册列出的合法取值。\n\n");
     out.push_str("## 语句块\n");
     for item in &manual.statement_blocks {
         out.push_str(&format!("- `{}`: {}\n", item.title, item.detail));
@@ -508,9 +518,9 @@ pub fn build_generation_prompt(
     prompt.push_str("- 生成的代码必须能转换为 strategy_spec 并提交 POST /v1/backtests。\n");
     prompt.push_str("- 不要使用手册未列出的字段、函数或外部平台 API 名称。\n\n");
     prompt.push_str("只允许使用这些可编译语句：market、benchmark、signal、rebalance.every_days(...).at([...])、selection.limit、selection.market_cap_band、filter.stock_ma、filter.stock_expr、ordering.rank_by、ordering.rank_expr、allocation.buy_scale、risk.stop_loss、risk.take_profit、risk.index_exposure、execution.matching_type、execution.slippage、universe.exclude。禁止输出 filter(...)、rank(...)、select.top(...)、weight.equal()、sell_rule(...)、backtest(...)、risk.max_position(...) 这类未支持伪语法。\n");
-    prompt.push_str("参数形态必须严格：selection.market_cap_band 必须写 field=\"market_cap\" 或 field=\"free_float_cap\", lower=..., upper=...；禁止使用 float_market_cap；禁止使用 ma60、stock_ma60、signal_ma60、benchmark_ma60，60日价格均线写 rolling_mean(\"close\", 60) 或 ma(\"close\", 60)，任意窗口均量写 rolling_mean(\"volume\", n) 或 vma(n)；不要生成 fn score() 这类零参数函数，股票字段排序直接写在 ordering.rank_expr 内或用带参数函数；布尔字段按布尔使用，写 !is_st、!paused、!at_upper_limit、!at_lower_limit，不要写 is_st == 0；risk.index_exposure 只能传一个数值表达式，例如 ((signal_close < signal_ma20) ? 0.35 : 1.0)；execution.matching_type 只能取 next_tick_last、next_tick_best_own、next_tick_best_counterparty、counterparty_offer、vwap、current_bar_close、next_bar_open、open_auction；execution.slippage 必须写 execution.slippage(\"none\") 或 execution.slippage(\"price_ratio\", 0.001)。\n");
+    prompt.push_str("参数形态必须严格：selection.market_cap_band 必须写 field=\"market_cap\" 或 field=\"free_float_cap\", lower=..., upper=...；禁止使用 float_market_cap；禁止使用 ma60、stock_ma60、signal_ma60、benchmark_ma60，60日价格均线写 rolling_mean(\"close\", 60) 或 ma(\"close\", 60)，任意窗口均量写 rolling_mean(\"volume\", n) 或 vma(n)；不要生成 fn score() 这类零参数函数，股票字段排序直接写在 ordering.rank_expr 内或用带参数函数；布尔字段按布尔使用，写 !is_st、!paused、!at_upper_limit、!at_lower_limit，不要写 is_st == 0；risk.index_exposure 只能传一个数值表达式，不要使用 risk.exposure；完整三元表达式 cond ? a : b 可以使用，但不得输出残缺问号/冒号片段；execution.matching_type 只能取 next_tick_last、next_tick_best_own、next_tick_best_counterparty、counterparty_offer、vwap、current_bar_close、next_bar_open、open_auction；next_bar_open 只能使用决策日信号，不能把执行日价格当作下单前信息；execution.slippage 必须写 execution.slippage(\"none\") 或 execution.slippage(\"price_ratio\", 0.001)。\n");
     prompt.push_str("回测成功但 tradeCount=0 或 holdingCount=0 是无效策略；第一版必须保持稳定买入覆盖率，复杂因子只能在后续优化中逐步加严。\n");
-    prompt.push_str("可参考但不要照抄的最小模板，回复时不要包含 ``` 代码围栏：\nstrategy(\"cn_a_smallcap_factor_rotation\") {\nmarket(\"CN_A\")\nbenchmark(\"000852.SH\")\nsignal(\"000001.SH\")\nrebalance.every_days(5).at([\"10:18\"])\nselection.limit(40)\nselection.market_cap_band(field=\"market_cap\", lower=0, upper=1000)\nfilter.stock_expr(listed_days >= 60 && !is_st && !paused && close > 2 && !at_upper_limit && !at_lower_limit)\nordering.rank_by(\"market_cap\", \"asc\")\nallocation.buy_scale(1.0)\nrisk.index_exposure((signal_close < signal_ma20) ? 0.35 : 1.0)\nrisk.stop_loss(holding_return < -0.08)\nexecution.slippage(\"price_ratio\", 0.001)\n}\n\n");
+    prompt.push_str("可参考但不要照抄的最小模板，回复时不要包含 ``` 代码围栏：\nstrategy(\"cn_a_smallcap_factor_rotation\") {\nmarket(\"CN_A\")\nbenchmark(\"000852.SH\")\nsignal(\"000001.SH\")\nrebalance.every_days(5).at([\"10:18\"])\nselection.limit(40)\nselection.market_cap_band(field=\"market_cap\", lower=0, upper=1000)\nfilter.stock_expr(listed_days >= 60 && !is_st && !paused && close > 2 && !at_upper_limit && !at_lower_limit)\nordering.rank_by(\"market_cap\", \"asc\")\nallocation.buy_scale(1.0)\nrisk.index_exposure(1.0)\nrisk.stop_loss(holding_return < -0.08)\nexecution.slippage(\"price_ratio\", 0.001)\n}\n\n");
     prompt.push_str("用户目标：\n");
     prompt.push_str(&format!("- {}\n", request.user_goal));
     if !request.constraints.is_empty() {