172ef41fc7
All numeric comparisons on req_count and fail_rate now use {${var:-0}}
- Lines 1772-1775: req_count comparisons
- Lines 1786, 1788: fail_rate comparisons
- Line 1794: req_count comparison in scraper detection
This ensures variables always evaluate to numeric values even if uninitialized,
preventing QA type-mismatch warnings on numeric comparisons.