docs: comprehensive documentation updates for v2.0.0

- Update README.md with Docker quickstart and new features (label management, hacker theme)
- Add detailed Docker deployment section to DEPLOYMENT.md:
  - docker-compose usage
  - Environment configuration
  - Data persistence and backup
  - Container health checks
  - Troubleshooting steps
  - Production deployment guidance
- Create comprehensive CLAUDE_DESCRIPTION.md:
  - Project overview and version info
  - Recent changes in v2.0.0
  - Technical stack details
  - Core features and file structure
  - State management explanation
  - Data flow diagrams
  - API endpoints reference
  - Development workflow
  - Customization points
  - Performance and security notes

README.md

@@ -33,9 +33,29 @@ Candle Annotator provides a TradingView-like charting interface that allows trad
 - **Delete Tool**: Remove any annotation (markers or lines) by clicking on them
 - **Tool Toggle**: Click tool button again to deactivate
 
-### Export
+### Label Management
+- **Label Sidebar**: View all annotations in collapsible sidebar with:
+  - **Click Selection**: Click markers on chart or in sidebar to select/highlight
+  - **Keyboard Delete**: Press Delete or Backspace to remove selected label
+  - **Individual Delete**: Delete button on each list item
+  - **Search**: Search annotations by timestamp
+  - **Filter**: Filter by Break Up, Break Down, or All types
+  - **Count Display**: See how many Break Up vs Break Down markers exist
+  - **Visual Highlight**: Selected markers highlighted with glow effect
+
+### UI Theme
+- **Hacker Theme**: Terminal-inspired dark aesthetic with:
+  - Matrix green (#00ff41) on dark background (#0a0e0a)
+  - Monospace font (JetBrains Mono) throughout
+  - Glow effects on button hover and active states
+  - Custom scrollbars styled to match theme
+  - High contrast for accessibility
+
+### Export & Deployment
 - **CSV Export**: Download all annotations with timestamp, label type, and price data
 - **ML-Ready Format**: Structured data suitable for training ML models
+- **Docker Deployment**: One-command deployment with persistent data volume
+- **Health Check**: Built-in /api/health endpoint for monitoring
 
 ## Tech Stack
 
@@ -50,13 +70,26 @@ Candle Annotator provides a TradingView-like charting interface that allows trad
 
 ## Getting Started
 
+### Docker Quickstart (Recommended)
+
+The fastest way to get running with Docker:
+
+```bash
+docker-compose up --build
+```
+
+Then open http://localhost:3000
+
+See [DEPLOYMENT.md](./DEPLOYMENT.md#docker-deployment) for detailed Docker instructions.
+
 ### Prerequisites
 
-- Node.js 18.x or higher
-- npm 9.x or higher
+- Node.js 18.x or higher (for local development)
+- npm 9.x or higher (for local development)
+- Docker & docker-compose (for containerized deployment)
 - Build tools for native modules (see DEPLOYMENT.md)
 
-### Installation
+### Local Development Installation
 
 1. Clone the repository:
    ```bash