docs: update documentation with new features

- Document long-running session support (12-24+ hours)
- Document buffer management and limits
- Document DELETE /api/sessions endpoint
- Document resource monitoring and display
- Document Kill All functionality
- Document performance optimizations
- Update feature list with new capabilities
- Add Long-Running Sessions section to README

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -4,18 +4,20 @@ A Claude Code session manager with an autonomous Ralph Loop for task assignment
 
 ## Features
 
-- **Web Interface**: Beautiful, responsive web UI with interactive terminal powered by xterm.js
-- **Session Management**: Spawn and manage multiple Claude CLI sessions as PTY subprocesses
-- **Interactive Terminal**: Full terminal access with resize support and buffer persistence for reconnections
+- **Web Interface**: Beautiful, responsive web UI with interactive terminal powered by xterm.js and modern gradient styling
+- **Session Management**: Spawn and manage multiple Claude CLI sessions as PTY subprocesses with one-click kill
+- **Interactive Terminal**: Full terminal access with resize support, buffer persistence, and 60fps batched rendering
 - **Respawn Controller**: Autonomous state machine that cycles sessions (update docs → /clear → /init) with configurable prompts
-- **Timed Runs**: Schedule Claude to work for a specific duration with live countdown
-- **Real-time Output**: Stream Claude's responses in real-time via Server-Sent Events (21 event types)
+- **Timed Runs**: Schedule Claude to work for a specific duration with animated live countdown
+- **Real-time Output**: Stream Claude's responses in real-time via Server-Sent Events (30 event types)
 - **Task Queue**: Priority-based task queue with dependency support
 - **Ralph Loop**: Autonomous control loop that assigns tasks to idle sessions and monitors completion
 - **Time-Aware Loops**: Extended work sessions with auto-generated follow-up tasks when minimum duration not reached
 - **Case Management**: Create project workspaces with auto-generated CLAUDE.md templates
 - **Cost Tracking**: Track total API costs across all sessions
 - **State Persistence**: All state persisted to `~/.claudeman/state.json`
+- **Long-Running Support**: Optimized for 12-24+ hour sessions with automatic buffer trimming
+- **Resource Monitoring**: Real-time memory/message usage display for each session
 
 ## Installation
 
@@ -37,14 +39,40 @@ claudeman web
 ```
 
 The web interface provides:
-- **Interactive Terminal**: Full xterm.js terminal with resize support
+- **Quick Start Button**: One-click to create a case and start an interactive Claude session
+- **Interactive Terminal**: Full xterm.js terminal with resize support and 60fps rendering
 - **Prompt Input**: Enter prompts and optionally set a working directory
 - **Duration Timer**: Set duration in minutes for timed runs (0 = single run)
 - **Live Output**: See Claude's response in real-time as it streams
-- **Countdown**: Large timer display when running timed jobs
-- **Session Monitoring**: View all active sessions with status indicators
+- **Countdown**: Animated timer display with shimmer progress bar
+- **Session Monitoring**: View all active sessions with status, resource usage, and cost
+- **Kill All Button**: One-click to terminate all running sessions and their child processes
+- **Resource Display**: Real-time memory usage and message count per session
 - **Respawn Controls**: Start/stop respawn controller with configurable settings
 - **Case Management**: Create new project workspaces with CLAUDE.md templates
+- **Modern UI**: Gradient backgrounds, smooth animations, and polished styling
+
+#### Quick Start Button
+
+The Quick Start feature reduces the typical 5-step workflow to just 1-2 steps:
+
+**Before (5 steps):**
+1. Go to Cases tab
+2. Create a case
+3. Click the case
+4. Switch to Run tab
+5. Click Interactive
+
+**After (1-2 steps):**
+1. (Optional) Select a case from dropdown
+2. Click "Quick Start"
+
+The Quick Start button will:
+- Create a case folder in `~/claudeman-cases/` if it doesn't exist
+- Generate a CLAUDE.md file for the case
+- Create a new session pointed to that case directory
+- Start an interactive Claude terminal
+- Focus the terminal so you can start working immediately
 
 ### CLI Usage
 
@@ -227,6 +255,36 @@ When the minimum duration hasn't been reached and all tasks are complete, the Ra
 - Check for security vulnerabilities
 - Run linting and fix issues
 
+## Long-Running Sessions
+
+Claudeman is optimized for extended autonomous sessions (12-24+ hours):
+
+### Buffer Management
+
+To prevent memory issues during long runs, buffers are automatically managed:
+- **Terminal buffer**: Max 5MB, trims to 4MB when exceeded
+- **Text output**: Max 2MB, trims to 1.5MB when exceeded
+- **Messages**: Max 1000, keeps most recent 800 when exceeded
+
+### Performance Optimizations
+
+- **Server-side batching**: Terminal data batched at 60fps (16ms intervals)
+- **Client-side batching**: requestAnimationFrame for smooth rendering
+- **Aggressive process cleanup**: SIGKILL with process group termination
+
+### Resource Monitoring
+
+Each session displays real-time resource usage:
+- Memory usage (terminal + text buffers)
+- Message count
+- Color-coded warnings (green/yellow/red based on usage)
+
+### Kill Sessions
+
+- Click `✕` on individual session cards to terminate
+- Click `Kill All` button in sessions panel to terminate all at once
+- Sessions are forcefully killed with SIGKILL after SIGTERM timeout
+
 ## State File
 
 All state is persisted to `~/.claudeman/state.json`: