v1.2.0

Features

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

Bug Fixes

• client: stop including model data in unknown property errors
• foundry,bedrock: send workspaceID as the anthropic-workspace-id header on Messages
• tools: restore the released tool runner behavior when the caller changes its messages or params while handling a reply

Chores

• api: document the api key header on the environments list endpoint
• 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