feat(tui): add usage overlay and sidebar for displaying usage statistics and tasks

feat(tui): implement status bar with connection and turn state indicators
feat(tui): create workflow panel for agent status and progress visualization
feat(web): introduce web frontend interface with static file serving
feat(ws): add WebSocket interface for real-time communication and session management

apps/infrastructure/src/ipc/client.rs

@@ -0,0 +1,36 @@
+//! IPC client — connects to the daemon's Unix socket and sends/receives
+//! framed JSON messages.
+
+use std::os::unix::net::UnixStream;
+use std::sync::Mutex;
+
+/// A thread-safe IPC client connected to a Zesdex daemon over a Unix socket.
+pub struct IpcClient {
+    conn: Mutex<crate::ipc::conn::Connection>,
+}
+
+impl IpcClient {
+    pub fn connect_unix(path: &str) -> anyhow::Result<Self> {
+        let stream = UnixStream::connect(path)?;
+        let conn = crate::ipc::conn::Connection::new(stream);
+        Ok(Self {
+            conn: Mutex::new(conn),
+        })
+    }
+
+    pub fn send<T: serde::Serialize>(&self, msg: &T) -> anyhow::Result<()> {
+        let mut guard = self
+            .conn
+            .lock()
+            .expect("IpcClient mutex poisoned");
+        guard.send(msg)
+    }
+
+    pub fn receive<T: serde::de::DeserializeOwned>(&self) -> anyhow::Result<Option<T>> {
+        let mut guard = self
+            .conn
+            .lock()
+            .expect("IpcClient mutex poisoned");
+        guard.receive()
+    }
+}