Files
Fabric/internal
Kayvan Sylvan 3dc83584b9 chore: bump anthropic SDK to v1.21.0 and clean up unused dependencies
See https://www.anthropic.com/news/claude-opus-4-6

## CHANGES

- Upgrade anthropic-sdk-go from v1.20.0 to v1.21.0
- Add `ClaudeOpus4_6` to supported Anthropic model list
- Remove unused indirect dependencies from go.mod and go.sum
- Clean up legacy protobuf and gRPC version references
- Remove stale tensor, math, and image processing libraries
- Drop unused table writer and console dependencies
- Prune obsolete cloud.google.com version pins
2026-02-05 10:54:22 -08:00
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