feat: Add EIP-712 signing for L1 authentication (src/auth.rs), HMAC-SHA256 for L2 API authentication, create_api_key(), derive_api_key(), create_or_derive_api_key(), Add set_api_creds() for credential management, Add create_order() and create_market_order() with EIP-712 signing, Add post_order() and create_and_post_order() for order submission, Add cancel(), cancel_orders(), cancel_all() for order management, Add OrderBuilder with proper tick size validation and rounding, Add get_orders() with filtering by ID, asset, market, Add get_trades() with filtering by time range, maker, asset, Add OpenOrderParams and TradeParams for query flexibility, Add balance_allowance() for balance and allowance queries, Add notifications() for push notification setup, Add get_midpoints() for efficient multi-token midpoint queries, Add get_prices() for batch bid/ask/mid price retrieval, Add BatchMidpointRequest/Response and BatchPriceRequest/Response types, Replace Decimal with u32 (Price) and i64 (Qty) on hot paths, Add decimal_to_price() and decimal_to_qty() conversion functions

src/lib.rs

@@ -93,9 +93,11 @@ pub fn init() {
 
 // Re-export main types
 pub use crate::types::{
-    ApiCredentials, Balance, ClientConfig, FillEvent, MarketSnapshot, Order, OrderBook,
-    OrderDelta, OrderRequest, OrderStatus, OrderType, Side, StreamMessage, WssAuth, 
-    WssSubscription, WssChannelType,
+    ApiCredentials, Balance, BalanceAllowance, BatchMidpointRequest, BatchMidpointResponse,
+    BatchPriceRequest, BatchPriceResponse, ClientConfig, FillEvent, MarketSnapshot, 
+    NotificationParams, OpenOrder, OpenOrderParams, Order, OrderBook, OrderDelta, 
+    OrderRequest, OrderStatus, OrderType, Side, StreamMessage, TokenPrice, TradeParams,
+    WssAuth, WssSubscription, WssChannelType,
 };
 
 // Re-export client
@@ -121,11 +123,13 @@ pub use crate::utils::{
 };
 
 // Module declarations
+pub mod auth;
 pub mod book;
 pub mod client;
 pub mod decode;
 pub mod errors;
 pub mod fill;
+pub mod orders;
 pub mod stream;
 pub mod types;
 pub mod utils;