Implement chat and markdown views, enhance status bar, and add workflow panel

- Added `chat.rs` for rendering chat messages with timestamps and roles.
- Introduced `markdown.rs` for rendering markdown content with styling.
- Created `status.rs` to display the application status bar with session and message counts.
- Developed `workflow.rs` to show the current workflow status, including tool calls and active jobs.
- Established a `theme.rs` for centralized color management across the UI.
- Updated `mod.rs` to include new modules and manage rendering logic.

src/ipc/server.rs

@@ -0,0 +1,42 @@
+use std::net::TcpListener;
+use std::thread;
+use anyhow::Result;
+use super::conn::Connection;
+
+pub struct IpcServer {
+    listener: TcpListener,
+}
+
+impl IpcServer {
+    pub fn bind(addr: &str) -> Result<Self> {
+        let listener = TcpListener::bind(addr)?;
+        Ok(IpcServer { listener })
+    }
+
+    pub fn accept(&self) -> Result<Connection> {
+        let (stream, _addr) = self.listener.accept()?;
+        stream.set_nodelay(true)?;
+        Ok(Connection::Tcp(stream))
+    }
+
+    pub fn accept_with_handler<F>(self, handler: F) -> thread::JoinHandle<()>
+    where
+        F: Fn(Connection) -> Result<()> + Send + 'static,
+    {
+        thread::spawn(move || {
+            for stream in self.listener.incoming() {
+                match stream {
+                    Ok(stream) => {
+                        if let Err(e) = handler(Connection::Tcp(stream)) {
+                            eprintln!("ipc handler error: {}", e);
+                        }
+                    }
+                    Err(e) => {
+                        eprintln!("ipc accept error: {}", e);
+                        break;
+                    }
+                }
+            }
+        })
+    }
+}