Expose strategy runtime data APIs

crates/fidc-core/src/strategy_ai.rs

@@ -191,6 +191,10 @@ pub fn built_in_strategy_manual() -> StrategyAiManual {
         functions: vec![
             ManualFunction { name: "factor".to_string(), signature: "factor(\"column_name\")".to_string(), detail: "读取当前股票的数据库因子列。".to_string() },
             ManualFunction { name: "day_factor".to_string(), signature: "day_factor(\"field_name\")".to_string(), detail: "读取日级/指数级字段映射。".to_string() },
+            ManualFunction { name: "history_bars".to_string(), signature: "ctx.history_bars(symbol, count, \"1d\" | \"1m\" | \"tick\", \"close\", include_now)".to_string(), detail: "回测内核策略上下文数据 API，返回指定证券最近 N 条数值序列。日线字段支持 open/high/low/close/last/prev_close/volume/upper_limit/lower_limit；分钟或 tick 字段支持 last/bid1/ask1/volume_delta/amount_delta。日线 include_now=false 排除当前交易日；分钟/tick 会按当前 on_bar、on_tick 或调度时刻截断，include_now=false 排除当前 bar/tick，避免未来函数。".to_string() },
+            ManualFunction { name: "current_snapshot".to_string(), signature: "ctx.current_snapshot(symbol)".to_string(), detail: "读取当前交易日指定证券的日级快照，可用于获得当日 open/close/last/upper_limit/lower_limit 等字段。".to_string() },
+            ManualFunction { name: "instrument/instruments/all_instruments".to_string(), signature: "ctx.instrument(symbol)".to_string(), detail: "读取证券元数据，包括名称、板块、上市日期、退市日期、最小下单量、整手、最小价位等；all_instruments 按证券代码稳定排序返回全量证券。".to_string() },
+            ManualFunction { name: "get_trading_dates/get_previous_trading_date/get_next_trading_date".to_string(), signature: "ctx.get_previous_trading_date(date, n)".to_string(), detail: "交易日历 API。get_trading_dates 返回闭区间交易日；previous/next 返回相对某日向前或向后的第 n 个交易日，当前日自身不计入。".to_string() },
             ManualFunction { name: "rolling_mean".to_string(), signature: "rolling_mean(\"field\", lookback)".to_string(), detail: "任意字段滚动均值，支持 volume/amount/turnover_ratio、signal_open/signal_close、benchmark_open/benchmark_close 等。任意成交量窗口推荐用它，比如 rolling_mean(\"volume\", 15)。".to_string() },
             ManualFunction { name: "sma".to_string(), signature: "sma(\"field\", lookback)".to_string(), detail: "rolling_mean 的别名。任意价格均线窗口推荐用它，比如 sma(\"close\", 15)。".to_string() },
             ManualFunction { name: "round/floor/ceil/abs/min/max/clamp".to_string(), signature: "round(x)".to_string(), detail: "常用数值函数。".to_string() },