`Anthropic TypeScript SDK` `0.100.0` Adds `claude-opus-4-8` Support

Model access, mid-conversation system blocks, and detailed output-token usage landed together. Worth upgrading before testing new Claude flows.

• —claude-opus-4-8 is now supported in the SDK, so TypeScript apps can call it without local type workarounds.
• —Mid-conversation system blocks unlock cleaner control changes during long chats and agent loops.
• —usage.output_tokens_details adds more granular output accounting, useful for cost dashboards and per-feature metering.