## CHANGES
- Bump `anthropic-sdk-go` dependency from v1.19.0 to v1.20.0
- Add deprecation notice for pre-February 2026 legacy models
- Add new Claude Sonnet 4.0 and Opus 4.0 model aliases
- Extend 1M context beta support to all Sonnet 4 variants
- Reorganize model list to separate deprecated from current models
- Add `neturl` to VS Code spell-check dictionary