Build a VS Code Web replica that runs entirely in the browser. Include a file explorer sidebar with folder tree navigation, a multi-tab code editor with syntax highlighting, a command palette (Ctrl+Shift+P), an integrated terminal panel, top menu bar (File, Edit, View, Go, Run, Terminal, Help), status bar at the bottom, keyboard shortcuts, and an AI agent chat panel. Use a dark theme matching VS Code's default appearance. Make it responsive and ensure smooth interactions.
Add the following advanced features to make the replica feel like a real desktop editor:
- Resizable and collapsible panels (explorer, editor, terminal, and side panels) with draggable splitters and persisted layout state in localStorage.
- Draggable and reorderable editor tabs with close buttons, unsaved-change indicators, and tab context menus (Close, Close Others, Close to the Right).
- IntelliSense-style autocomplete, error diagnostics, code folding, bracket matching, and multi-cursor support in the editor.
- A language server protocol (LSP) client simulation for TypeScript, Python, Rust, and Go with hovers, go-to-definition, and find-references UI.
- Integrated source control panel showing Git status, branch selector, commit message input, diff viewer, and staged/unstaged file lists.
- An extensions marketplace UI with search, category filters, extension details page, install/uninstall toggles, and featured extensions carousel.
- A debug console with breakpoints, call stack, variables scope, watch expressions, and step-through controls.
- Theme customization: allow users to switch between dark, light, and high-contrast themes, and to override token colors via a JSON settings editor.
- Keyboard shortcut editor that displays all commands, supports keybinding recording, and persists custom shortcuts.
- AI agent chat panel with message history, inline code actions, diff previews, approval checkpoints, and a persistent agent activity timeline.
- Responsive design that adapts the layout for tablets and smaller screens, including a mobile-friendly command palette and touch-friendly tab strip.