Anthropic Source Code Leak, Claude Cowork, Agent SDK, Sonnet 5 Pricing; DeepSeek Extracts Claude Code Binary

Anthropic source code leak via Claude Code update: 512K lines exposed. Claude in Chrome renamed to Claude Cowork, syncing side panel chats. Anthropic adds watermarks for EU compliance. Publishes Claude Agent SDK article. Sonnet 5 pricing: $2/$10 intro, then $3.90 input after Sept 1 due to tokenizer inflation. $10B computing deal with Volta Infra. Claude Code with DeepSeek 98% cost reduction. DeepSeek extracted 262 MiB of Claude Code binary from its new model, a major security/ethics breach raising questions about IP theft in the open-weight era. Builders relying on Claude Code should be aware.