What
Adds the tool-search-tool-2025-10-19 beta header for Vertex and Bedrock providers.
Details
- New beta feature flag added to the list of Claude betas
- Provider-specific version selection (different identifier for Vertex/Bedrock)
Evidence
L4Q() at line 64075 (contains "tool-search-tool-2025-10-19" beta string, checks l4() for provider)
Strings lifted out of the shipped bundle, so the claim above can be checked against them.