♻️ 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/lib/types.ts

@@ -0,0 +1,59 @@
+export type MessageRole = "user" | "assistant" | "system" | "tool";
+
+export type MessageStatus = "pending" | "streaming" | "complete" | "error";
+
+export interface TextContent {
+  type: "text";
+  text: string;
+}
+
+export interface ToolUseContent {
+  type: "tool_use";
+  id: string;
+  name: string;
+  input: Record<string, unknown>;
+}
+
+export interface ToolResultContent {
+  type: "tool_result";
+  tool_use_id: string;
+  content: string | ContentBlock[];
+  is_error?: boolean;
+}
+
+export type ContentBlock = TextContent | ToolUseContent | ToolResultContent;
+
+export interface Message {
+  id: string;
+  role: MessageRole;
+  content: ContentBlock[] | string;
+  status: MessageStatus;
+  createdAt: number;
+  model?: string;
+  usage?: {
+    input_tokens: number;
+    output_tokens: number;
+  };
+}
+
+export interface Conversation {
+  id: string;
+  title: string;
+  messages: Message[];
+  createdAt: number;
+  updatedAt: number;
+  model?: string;
+}
+
+export interface ToolDefinition {
+  name: string;
+  description: string;
+  input_schema: Record<string, unknown>;
+}
+
+export interface AppSettings {
+  theme: "light" | "dark" | "system";
+  model: string;
+  apiUrl: string;
+  streamingEnabled: boolean;
+}