### Run npm scripts for development and production

Source: https://github.com/xenongee/ssh-multiplexer/blob/main/README.md

Use these commands to start the application in different environments or to compile the project.

```bash
# Development
npm run dev

# Production
npm run server

# Build binaries
npm run build
```

--------------------------------

### Project Directory Structure

Source: https://github.com/xenongee/ssh-multiplexer/blob/main/ARCH.md

The backend is organized into modular components for configuration, SSH client management, session handling, and socket communication.

```text
src/
├── server.js              — entry point (40 lines), Express + Socket.IO
├── config/
│   └── ConfigService.js   — load sshm.json
├── ssh/
│   ├── SshClient.js       — ssh2 client wrapper (85 lines, complexity 10)
│   └── SessionManager.js  — session management (65 lines)
├── socket/
│   └── SocketController.js — Socket.IO handlers (94 lines, complexity 5)
└── utils/
    ├── connId.js          — generate connId
    └── logger.js          — logging
```

--------------------------------

### Complete work

Source: https://github.com/xenongee/ssh-multiplexer/blob/main/AGENTS.md

Closes an issue with a specified reason in JSON format.

```bash
bd close bd-42 --reason "Completed" --json
```

--------------------------------

### Project Directory Structure

Source: https://github.com/xenongee/ssh-multiplexer/blob/main/README.md

Overview of the source code organization, including server-side logic, frontend modules, and build artifacts.

```text
ssh-multiplexer/
├── src/
│   ├── server.js                # Entry point (Express + Socket.IO, ~50 lines)
│   ├── config/
│   │   └── ConfigService.js     # Load and validate sshm.json
│   ├── ssh/
│   │   ├── SshClient.js         # Wrapper over ssh2.Client (no socket.io)
│   │   └── SessionManager.js    # SSH session management (no socket.io)
│   ├── socket/
│   │   └── SocketController.js  # Socket.IO event handlers (no ssh2)
│   ├── utils/
│   │   ├── connId.js            # Generate unique connection IDs
│   │   └── logger.js            # Logging
│   └── public/                  # Frontend (ES modules)
│       ├── client.js            # Entry point (initialization)
│       ├── index.html           # Main page
│       ├── style.css            # Styles (dark theme, grid, statuses)
│       └── modules/
│           ├── state.js         # Global state + DOM references
│           ├── render.js        # Render functions (terminals, controls, status)
│           ├── terminal.js      # Terminals (create, fit, fullscreen)
│           ├── input.js         # Keyboard/paste handling
│           ├── socket.js        # Socket.IO handlers
│           └── ui.js            # DOM event listeners, help modal
├── package.json                 # Dependencies, scripts, pkg configuration
├── sshm.json                    # Application config (host groups, port, terminal)
├── gendoc.sh                    # Script to generate project_list.md
├── .gitignore
└── dist/                        # Built binaries (npm run build)
    ├── ssh-multiplexer-linux     # Linux x64 executable
    ├── ssh-multiplexer-win.exe   # Windows x64 executable
    └── sshm.json                 # Config copy for dist
```

--------------------------------

### Check for ready work

Source: https://github.com/xenongee/ssh-multiplexer/blob/main/AGENTS.md

Retrieves a list of unblocked issues ready for processing in JSON format.

```bash
bd ready --json
```

--------------------------------

### Application Configuration Schema

Source: https://github.com/xenongee/ssh-multiplexer/blob/main/README.md

The sshm.json file defines runtime settings including server host/port, terminal defaults, and host group definitions.

```json
{
  "app_port": 3333,                    // optional, default 3333
  "app_host": "127.0.0.1",             // optional, default 127.0.0.1
  "terminal_defaults": {               // optional, xterm.js props
    "fontFamily": "'Fira Code', monospace",
    "fontSize": 11,
    "minWidth": 600
  },
  "groups": [
    {
      "group": "Name",                  // unique group name
      "hosts": [
        {
          "label": "PC-01",            // display name in terminal
          "user": "root",
          "host": "192.168.1.1",
          "port": 22,                  // optional, default 22
          "password": "secret"         // plaintext (see Security)
        }
      ]
    }
  ]
}
```

--------------------------------

### Create new issues

Source: https://github.com/xenongee/ssh-multiplexer/blob/main/AGENTS.md

Creates new tasks, bugs, or features with optional descriptions, priorities, and dependency links.

```bash
bd create "Issue title" --description="Detailed context" -t bug|feature|task -p 0-4 --json
bd create "Issue title" --description="What this issue is about" -p 1 --deps discovered-from:bd-123 --json
```

--------------------------------

### Claim and update issues

Source: https://github.com/xenongee/ssh-multiplexer/blob/main/AGENTS.md

Updates an issue's status, such as claiming it for work or changing its priority.

```bash
bd update <id> --claim --json
bd update bd-42 --priority 1 --json
```

--------------------------------

### SSH Multiplexer Data Flow

Source: https://github.com/xenongee/ssh-multiplexer/blob/main/ARCH.md

Visual representation of the communication sequence between the browser client, the server's controllers, and the target SSH hosts.

```text
Browser                        Server                         SSH Hosts
  │                              │                               │
  │──selectGroup──────────────► SocketController                 │
  │                              │──SessionManager.connect()──► SshClient.connect()
  │                              │                               │──ssh2 shell()
  │◄──term.create─────────────── │                               │
  │◄──term.shell.ready────────── │◄──cb.onReady()                │
  │◄──term.data(data)─────────── │◄──stream.on('data') ◄─────────┤
  │──term.input.specific───────► │──SshClient.write() ──────────►│
  │     (loops per unlocked)     │                               │
  │──term.resize───────────────► │──SshClient.resize() ─────────►│
  │                              │                               │
  │◄──term.close──────────────── │◄──cb.onClose() ◄──────────────┤
  │◄──term.error──────────────── │◄──cb.onError() ◄──────────────┤
```

--------------------------------

### Update Terminal Lock State

Source: https://github.com/xenongee/ssh-multiplexer/blob/main/ARCH.md

Updates the lock status of a specific terminal in the global state and triggers a UI re-render.

```js
function setTerminalLock(connId, isLocked) {
  state.terminals[connId].isLocked = isLocked;
  renderTerminals();
}
```

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