WebSocket Transport for SDK Communication

What: Added support for persistent WebSocket connections as an alternative to stdin/stdout communication How to use:

# Connect to Claude's SDK server with WebSocket
export CLAUDE_CODE_SESSION_ACCESS_TOKEN="your-token-here"
claude --sdk-url=wss://api.claude.ai/sdk/v1/connect \
       --input-format=stream-json \
       --output-format=stream-json

Details:

• Automatic reconnection with exponential backoff (up to 5 attempts)
• Message buffering during disconnections (1000 message capacity)
• Request replay on reconnection to prevent message loss
• Support for both ws:// and wss:// protocols with Bearer token authentication
• Enables real-time bidirectional communication for streaming responses