* test(2123): add failing tests for TDD init JSON exposure and --tdd flag
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* feat(2123): expose tdd_mode in init JSON and add --tdd flag override
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>