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ew8bakandClaude Sonnet 4.6
7b4ea733a2
When FM mode is active, vertical grid lines and frequency labels snap to FM channel boundaries (FM_STEP_HZ) instead of the fixed 8-division layout. Grid and label density auto-adapt: lines thinner than 4px are thinned, labels are spaced so they never overlap (short tick shown between labeled lines). Grid cache invalidates on center-freq, step, or span changes. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>