Anthropic TypeScript SDK 1.2.0

Features

• api: add support for message threads
• api: add usage and cost reports by dimension, mark older reports legacy

Bug Fixes

• tools: copy the messages a tool runner is created with again
• tools: restore what the tool runner does after setMessagesParams() or pushMessages() in the loop body

Chores

• docs: clarify plugin content scan and validation descriptions
• docs: clarify plugin served_version_pinned and updated_at
• docs: fix usage and cost report examples and ending_at docs
• docs: rate limit model lists vary by organization and workspace
• internal: rename the version manifest to .version-manifest.json
• tests: fix a retry count header test that could never fail