Initial commit (clean, no build artifacts)

Cargo.toml

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+[package]
+name = "polyfill-rs"
+version = "0.1.0"
+edition = "2021"
+authors = ["Julius Tranquilli <julius@example.com>"]
+description = "Production-ready Rust client for Polymarket with HFT optimizations"
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/juliustranquilli/polyfill-rs"
+readme = "README.md"
+keywords = ["polymarket", "trading", "hft", "crypto", "prediction-markets"]
+categories = ["api-bindings", "network-programming", "finance"]
+
+[dependencies]
+# Async runtime and futures
+tokio = { version = "1.41", features = ["full"] }
+futures = "0.3"
+futures-util = "0.3"
+
+# HTTP client
+reqwest = { version = "0.12", features = ["json", "stream", "gzip"] }
+
+# Serialization
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+
+# Ethereum and crypto
+alloy-primitives = "0.8"
+alloy-sol-types = { version = "0.8", features = ["eip712-serde", "json"] }
+alloy-signer = { version = "0.7", features = ["eip712"] }
+alloy-signer-local = { version = "0.7", features = ["eip712"] }
+
+# Numeric types
+rust_decimal = { version = "1.36", features = ["serde-with-str"] }
+rust_decimal_macros = "1.36"
+
+# Error handling
+anyhow = "1.0"
+thiserror = "1.0"
+
+# Crypto and encoding
+base64 = "0.22"
+hmac = "0.12"
+sha2 = "0.10"
+
+# Logging
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+
+# Time handling
+chrono = { version = "0.4", features = ["serde"] }
+
+# Utilities
+uuid = { version = "1.0", features = ["v4", "serde"] }
+url = "2.5"
+bytes = "1.0"
+rand = "0.8"
+
+# Optional WebSocket support for streaming
+tokio-tungstenite = { version = "0.21", optional = true, features = ["native-tls"] }
+
+[dev-dependencies]
+criterion = { version = "0.5", features = ["html_reports"] }
+tokio-test = "0.4"
+mockito = "1.0"
+proptest = "1.0"
+env_logger = "0.10"
+
+[features]
+default = ["stream"]
+stream = ["tokio-tungstenite"]
+
+[[bench]]
+name = "book_updates"
+harness = false
+
+[[bench]]
+name = "fill_processing"
+harness = false
+
+[profile.release]
+# Optimizations for HFT performance
+opt-level = 3
+lto = true
+codegen-units = 1
+panic = "abort"
+
+[profile.dev]
+# Faster compilation for development
+opt-level = 1
+
+[profile.test]
+# Optimizations for test performance
+opt-level = 2
+debug = true