fix(anthropic): support Claude 5 structured outputs - #391
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August 14, 2026 15:44
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Closes #390
Why this matters
Claude 5 models now use Anthropic native structured outputs in auto mode instead of falling back to the legacy tool-based implementation.
What changed
The model capability matcher recognizes Claude 5 and later major versions while continuing to exclude legacy version-first names.
Verification
make check-testsmake check-typesmake check-format