rustrade-risk 0.2.0

Generic risk primitives (position sizing, circuit breakers, session PnL) for rustrade
Documentation 
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#![warn(missing_docs)]

//! # rustrade-risk
//!
//! Generic risk primitives for trading bots:
//!
//! - [`CircuitBreaker`] — sliding-window loss breaker (ported from the
//!   kucoin bot's `circuit_breaker.rs`).
//! - [`SessionPnl`] — daily PnL tracker with drawdown cap and automatic
//!   00:00 UTC rollover.
//! - [`PositionSizer`] — notional-based sizing from margin + leverage +
//!   price + contract multiplier (ported from kucoin's `sizing.rs`).
//!
//! Nothing here is strategy- or exchange-specific. If you find yourself
//! needing to special-case a particular strategy, the logic belongs in
//! the `Brain` implementation, not here.

pub mod circuit_breaker;
pub mod clock;
pub mod session_pnl;
pub mod sizing;

pub use circuit_breaker::{CircuitBreaker, CircuitBreakerConfig, CircuitBreakerSnapshot};
pub use clock::{Clock, ManualClock, SystemClock};
pub use session_pnl::{SessionPnl, SessionPnlConfig, SessionPnlSnapshot};
pub use sizing::{PositionSizer, SizingConfig};