[breaking] Amazon Bedrock moves Claude Opus 4.1 to Legacy (EOL 2027-01-08)

Amazon Bedrock moved Claude Opus 4.1 (anthropic.claude-opus-4-1-20250805-v1:0) to the Legacy state on 2026-07-08 in us-east-1, us-east-2, and us-west-2, with an end-of-life date of 2027-01-08. Public extended access (at potentially higher, provider-set pricing) begins 2026-10-08. New customers cannot start using a Legacy model. Effective: 2027-01-08. Affected: amazon/anthropic.claude-opus-4-1-20250805-v1:0. Severity: breaking. Verification: verified.