Codeman/CLAUDE.md

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

Claudeman is a Claude Code session manager with a web interface and autonomous Ralph Loop. It spawns Claude CLI processes via PTY, streams output in real-time via SSE, and supports scheduled/timed runs.

Tech Stack: TypeScript, Node.js, Fastify, Server-Sent Events, node-pty

Commands

npm run build          # Compile TypeScript + copy static files to dist/web/
npm run dev            # Run with tsx (no build needed)
npm run clean          # Remove dist/

npm link               # Make 'claudeman' globally available
claudeman web          # Start web interface on port 3000
claudeman web -p 8080  # Custom port

# Testing
npm run test           # Run all tests once
npm run test:watch     # Run tests in watch mode
npm run test:coverage  # Run tests with coverage report
npx vitest run test/session.test.ts           # Run single test file
npx vitest run -t "should create session"     # Run tests matching pattern

Architecture

src/
├── index.ts              # CLI entry point (commander)
├── cli.ts                # CLI command implementations
├── session.ts            # Core: PTY wrapper for Claude CLI
├── session-manager.ts    # Manages multiple sessions
├── respawn-controller.ts # Auto-respawn state machine
├── ralph-loop.ts         # Autonomous task assignment
├── task.ts / task-queue.ts # Priority queue with dependencies
├── state-store.ts        # Persistence to ~/.claudeman/state.json
├── types.ts              # All TypeScript interfaces
├── web/
│   ├── server.ts         # Fastify REST API + SSE
│   └── public/           # Static frontend files
└── templates/
    └── claude-md.ts      # CLAUDE.md generator for new cases

Data Flow

1. Session spawns claude -p --dangerously-skip-permissions via node-pty
2. PTY output is buffered, ANSI stripped, and parsed for JSON messages
3. WebServer broadcasts events to SSE clients at /api/events
4. State persists to ~/.claudeman/state.json via StateStore

Key Components

• Session (src/session.ts): Wraps Claude CLI as PTY subprocess. Two modes: runPrompt(prompt) for one-shot execution, startInteractive() for persistent terminal. Emits output, terminal, message, completion, exit, idle, working events. Maintains terminal buffer for reconnections. Includes buffer management for long-running sessions (12-24+ hours) with automatic trimming.

• RespawnController (src/respawn-controller.ts): State machine that keeps interactive sessions productive. Detects idle → sends update prompt → /clear → /init → repeats. Configurable timeouts and prompts.

• RalphLoop (src/ralph-loop.ts): Autonomous task assignment controller. Monitors sessions for idle state, assigns tasks from queue, detects completion via <promise>PHRASE</promise> markers. Supports time-aware loops with minimum duration.

• WebServer (src/web/server.ts): Fastify server with REST API + SSE. Manages sessions, scheduled runs, respawn controllers, and case directories. Broadcasts all events to connected clients.

Session Modes

One-Shot Mode (runPrompt(prompt)):

• Execute a single prompt and receive completion event
• Used for scheduled runs and quick API calls
• Session exits after prompt completes

Interactive Mode (startInteractive()):

• Persistent PTY terminal with full Claude CLI access
• Supports terminal resize for proper formatting
• Terminal buffer persisted for client reconnections
• Works with RespawnController for autonomous cycling

Code Patterns

Claude Message Parsing

Claude CLI outputs newline-delimited JSON. Strip ANSI codes before parsing:

const cleanLine = line.replace(/\x1b\[[0-9;]*m/g, '');
const msg = JSON.parse(cleanLine) as ClaudeMessage;
// msg.type: 'system' | 'assistant' | 'user' | 'result'
// msg.message?.content: Array<{ type: 'text', text: string }>
// msg.total_cost_usd: number (on result messages)

PTY Spawn Modes

One-shot mode (prompt execution):

pty.spawn('claude', ['-p', '--dangerously-skip-permissions', prompt], { ... })

Interactive mode (persistent terminal):

pty.spawn('claude', ['--dangerously-skip-permissions'], { ... })

Idle Detection

Session detects idle by watching for prompt character (❯ or \u276f) and waiting 2 seconds without activity. RespawnController uses the same patterns plus spinner characters to detect working state.

Long-Running Session Support

Sessions are optimized for 12-24+ hour runs with automatic buffer management:

Buffer Limits:

• Terminal buffer: 5MB max, trims to 4MB when exceeded
• Text output: 2MB max, trims to 1.5MB when exceeded
• Messages: 1000 max, keeps most recent 800 when exceeded

Performance Optimizations:

• Server-side terminal batching at 60fps (16ms intervals)
• Client-side requestAnimationFrame batching for smooth rendering
• Buffer statistics available via session details for monitoring

Buffer Stats Response:

{
  bufferStats: {
    terminalBufferSize: number;  // Current terminal buffer size in bytes
    textOutputSize: number;      // Current text output size in bytes
    messageCount: number;        // Number of parsed messages
    maxTerminalBuffer: number;   // Max allowed terminal buffer
    maxTextOutput: number;       // Max allowed text output
    maxMessages: number;         // Max allowed messages
  }
}

Respawn Controller State Machine

WATCHING → SENDING_UPDATE → WAITING_UPDATE → SENDING_CLEAR → WAITING_CLEAR → SENDING_INIT → WAITING_INIT → WATCHING

Default config (RespawnConfig in src/types.ts):

• idleTimeoutMs: 5000 (5s after prompt)
• updatePrompt: "update all the docs and CLAUDE.md"
• interStepDelayMs: 1000 (1s between steps)

SSE Event Catalog

All events are broadcast to clients connected to /api/events. Event format: { type: string, sessionId?: string, data: any }.

Session Events:

Event	Data	Description
session:created	{ session }	New session created
session:deleted	{ id }	Session removed
session:output	{ id, data }	Parsed output line (ANSI stripped)
session:terminal	{ id, data }	Raw terminal data with ANSI codes
session:message	{ id, message }	Parsed Claude JSON message
session:running	{ id, prompt }	Prompt execution started
session:interactive	{ id }	Interactive mode started
session:completion	{ id, result, cost }	Prompt completed, includes cost
session:exit	{ id, code }	Session process exited
session:idle	{ id }	Session is idle (prompt detected)
session:working	{ id }	Session is working (activity detected)
session:updated	{ session }	Session state updated
session:error	{ id, error }	Session error occurred

Respawn Controller Events:

Event	Data	Description
respawn:started	{ sessionId, status }	Respawn controller started
respawn:stopped	{ sessionId }	Respawn controller stopped
respawn:stateChanged	{ sessionId, state, prevState }	State machine transition
respawn:cycleStarted	{ sessionId, cycleNumber }	New update cycle starting
respawn:cycleCompleted	{ sessionId, cycleNumber }	Update cycle finished
respawn:stepSent	{ sessionId, step, input }	Command sent (update/clear/init)
respawn:stepCompleted	{ sessionId, step }	Command completed
respawn:configUpdated	{ sessionId, config }	Configuration changed
respawn:log	{ sessionId, message }	Debug/info log message
respawn:error	{ sessionId, error }	Error occurred

Scheduled Run Events:

Event	Data	Description
scheduled:created	{ run }	New scheduled run created
scheduled:updated	{ run }	Status/timer update
scheduled:log	{ id, log }	Scheduled run log entry
scheduled:completed	{ run }	Scheduled run finished
scheduled:stopped	{ run }	Scheduled run stopped by user

Case Events:

Event	Data	Description
case:created	{ name, path }	New case directory created

Init Event:

Event	Data	Description
init	{ sessions, scheduledRuns, respawnStatus, timestamp }	Full state sent on SSE connection

API Endpoints

Session Management

GET  /api/sessions                    # List all sessions (includes buffer stats)
POST /api/sessions                    # Create session { workingDir }
GET  /api/sessions/:id                # Get single session details
DELETE /api/sessions/:id              # Stop and remove a session (kills process + children)
DELETE /api/sessions                  # Kill all sessions at once
GET  /api/sessions/:id/output         # Get session output buffer
GET  /api/sessions/:id/terminal       # Get terminal buffer (raw ANSI)

Session Operations

POST /api/sessions/:id/run            # Run prompt { prompt } (one-shot mode)
POST /api/sessions/:id/interactive    # Start interactive terminal mode
POST /api/sessions/:id/input          # Send input to interactive session { input }
POST /api/sessions/:id/resize         # Resize terminal { cols, rows }
POST /api/sessions/:id/interactive-respawn  # Start interactive + respawn controller

Respawn Controller

GET  /api/sessions/:id/respawn        # Get respawn controller state
POST /api/sessions/:id/respawn/start  # Start respawn controller { config? }
POST /api/sessions/:id/respawn/stop   # Stop respawn controller
PUT  /api/sessions/:id/respawn/config # Update config { idleTimeoutMs, updatePrompt, interStepDelayMs }

Scheduled Runs

GET  /api/scheduled                   # List all scheduled runs
POST /api/scheduled                   # Create { prompt, workingDir, durationMinutes }
GET  /api/scheduled/:id               # Get scheduled run details
DELETE /api/scheduled/:id             # Cancel scheduled run

Cases & Quick Start

GET  /api/cases                       # List case directories
POST /api/cases                       # Create case { name, description }
GET  /api/cases/:name                 # Get case details
POST /api/quick-start                 # Quick start { caseName? } - creates case + interactive session
POST /api/run                         # Quick run { prompt, workingDir } (no session management)

Quick Start Response:

{
  success: boolean;
  sessionId?: string;    // ID of the created session
  casePath?: string;     // Full path to the case directory
  caseName?: string;     // Name of the case
  error?: string;        // Error message if success is false
}

Events

GET  /api/events                      # SSE stream (real-time events)
GET  /api/status                      # Full state snapshot (sessions + scheduled + respawn)