Initial commit: waste-rs mesh daemon, relay, and proto crates

Full Rust implementation with Ed25519 identity, X25519 ECDH handshake,
ChaCha20-Poly1305 encrypted peer connections, IPC server, and relay server.
Builds on Windows (MSVC), Linux, and macOS.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Cargo.toml

@@ -0,0 +1,23 @@
+[workspace]
+resolver = "2"
+members = [
+    "daemon",
+    "relay",
+    "proto",
+]
+
+[workspace.dependencies]
+tokio       = { version = "1", features = ["full"] }
+tokio-util  = { version = "0.7", features = ["codec"] }
+serde       = { version = "1", features = ["derive"] }
+serde_json  = "1"
+anyhow      = "1"
+tracing     = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+ring        = "0.17"
+base64      = "0.22"
+rand        = "0.8"
+bytes       = "1"
+clap        = { version = "4", features = ["derive"] }
+uuid        = { version = "1", features = ["v4", "serde"] }
+chrono      = { version = "0.4", features = ["serde"] }