add circles app and libraries

src/client_ws/Cargo.toml

@@ -0,0 +1,55 @@
+[package]
+name = "circle_client_ws"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+serde = { workspace = true }
+serde_json = { workspace = true }
+uuid = { workspace = true }
+log = { workspace = true }
+futures-channel = { workspace = true, features = ["sink"] }
+futures-util = { workspace = true, features = ["sink"] }
+thiserror = { workspace = true }
+async-trait = { workspace = true }
+url = { workspace = true }
+http = "0.2"
+
+# Authentication dependencies
+hex = { workspace = true }
+rand = { workspace = true }
+urlencoding = { workspace = true }
+
+# Optional crypto dependencies (enabled by default)
+secp256k1 = { workspace = true, optional = true }
+sha3 = { workspace = true, optional = true }
+
+# Optional server dependency for end-to-end examples
+circle_ws_lib = { path = "../server_ws", optional = true }
+
+# WASM-specific dependencies
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+gloo-net = { version = "0.4.0", features = ["websocket"] }
+wasm-bindgen-futures = "0.4"
+gloo-console = "0.3.0"
+wasm-bindgen = "0.2"
+js-sys = "0.3"
+web-sys = { version = "0.3", features = ["Request", "RequestInit", "RequestMode", "Response", "Window"] }
+
+# Native-specific dependencies
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
+tokio-tungstenite = { version = "0.19.0", features = ["native-tls"] }
+native-tls = "0.2.11"
+tokio-native-tls = "0.3.0"
+tokio = { workspace = true, features = ["rt", "macros", "time"] }
+
+[dev-dependencies]
+env_logger = { workspace = true }
+tokio = { workspace = true }
+
+
+# Features
+[features]
+default = ["crypto"]
+crypto = ["secp256k1", "sha3"]
+end_to_end = ["circle_ws_lib"]