feat: agor-pty crate — standalone PTY multiplexer daemon (Phase 1 WIP)

New crate at agor-pty/ (standalone, not in workspace — portable to Tauri/Electrobun):
- Rust daemon (agor-ptyd) with Unix socket IPC, JSON-framed protocol
- PTY session lifecycle: create, resize, write, close, output fanout
- 256-bit token auth, multi-client support, session persistence
- TypeScript IPC client at clients/ts/pty-client.ts (Bun + Node.js)
- Protocol: 9 client messages, 7 daemon messages
- Based on tribunal ruling (78% confidence, 4 rounds, 55 objections)

WIP: Rust implementation in progress (protocol.rs + auth.rs done)

agor-pty/Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "agor-pty"
+version = "0.1.0"
+edition = "2021"
+description = "Standalone PTY multiplexer daemon — manages terminal sessions via Unix socket IPC"
+license = "MIT"
+
+# Binary: the daemon process
+[[bin]]
+name = "agor-ptyd"
+path = "src/main.rs"
+
+# Library: shared types for IPC clients (Tauri, Electrobun, tests)
+[lib]
+name = "agor_pty"
+path = "src/lib.rs"
+
+[dependencies]
+portable-pty = "0.8"
+tokio = { version = "1", features = ["full"] }
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+uuid = { version = "1", features = ["v4"] }
+log = "0.4"
+env_logger = "0.11"
+nix = { version = "0.29", features = ["process", "signal", "ioctl", "term"] }
+rand = "0.8"
+hex = "0.4"
+
+[dev-dependencies]
+tokio-test = "0.4"