- Update Pydantic field descriptions to use 'idx' instead of 'ids' for consistency
- Fix debug logging to handle empty list edge case (avoid 'idx 0--1' display)
Note on review feedback:
- Validation is intentionally non-redundant: warnings provide visibility, list comprehensions ensure robustness
- WARNING level is appropriate for LLM output issues (not system errors)
- Existing test coverage is sufficient for this defensive logging addition
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Co-Authored-By: Claude <noreply@anthropic.com>
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