♻️ feat: implement session management for PTY sessions in the server

- Add SessionManager class to handle PTY sessions with WebSocket connections.
- Implement methods for creating, retrieving, and destroying sessions.
- Handle PTY output and WebSocket messages for terminal interaction.
- Ensure graceful session destruction and cleanup.

feat: initialize web application with Next.js and Tailwind CSS

- Create initial Next.js application structure with TypeScript support.
- Set up Tailwind CSS for styling with custom theme configurations.
- Add ESLint configuration for code quality and consistency.

feat: implement chat API and UI components

- Create chat API route to handle chat requests and responses.
- Develop chat layout with sidebar, header, chat window, and input components.
- Integrate Zustand for state management of conversations and messages.
- Add utility functions for formatting dates and managing class names.

chore: add environment variables and configuration files

- Create .env.example for environment variable setup.
- Add configuration files for PostCSS, Tailwind CSS, and TypeScript.
- Set up package.json with necessary dependencies and scripts for development.

web/components/chat/ChatWindow.tsx

@@ -0,0 +1,48 @@
+"use client";
+
+import { useEffect, useRef } from "react";
+import { useChatStore } from "@/lib/store";
+import { MessageBubble } from "./MessageBubble";
+import { Bot } from "lucide-react";
+
+interface ChatWindowProps {
+  conversationId: string;
+}
+
+export function ChatWindow({ conversationId }: ChatWindowProps) {
+  const bottomRef = useRef<HTMLDivElement>(null);
+  const { conversations } = useChatStore();
+  const conversation = conversations.find((c) => c.id === conversationId);
+  const messages = conversation?.messages ?? [];
+
+  useEffect(() => {
+    bottomRef.current?.scrollIntoView({ behavior: "smooth" });
+  }, [messages.length]);
+
+  if (messages.length === 0) {
+    return (
+      <div className="flex-1 flex flex-col items-center justify-center gap-4 text-center px-6">
+        <div className="w-12 h-12 rounded-full bg-brand-600/20 flex items-center justify-center">
+          <Bot className="w-6 h-6 text-brand-400" />
+        </div>
+        <div>
+          <h2 className="text-lg font-semibold text-surface-100">How can I help?</h2>
+          <p className="text-sm text-surface-400 mt-1">
+            Start a conversation with Claude Code
+          </p>
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div className="flex-1 overflow-y-auto">
+      <div className="max-w-3xl mx-auto py-6 px-4 space-y-6">
+        {messages.map((message) => (
+          <MessageBubble key={message.id} message={message} />
+        ))}
+        <div ref={bottomRef} />
+      </div>
+    </div>
+  );
+}