Navigation recall on django — Shadow-Frog vs flat vs no-shadow

Rows: task framing · Columns: shadow size · x-axis: tool-call budget (1 → ∞) · y-axis: recall · bands: 95% bootstrap confidence interval
· Hover any point for the exact recall (n=83 needles per cell).
No shadow
Flat shadow
Shadow-Frog
★ HEADLINE  Realistic case: file path given, 2,500-needle shadow, budget of just 8 tool calls — Shadow-Frog reaches 97.6%, flat shadow only 36.2%, no-shadow 12.4%. The flat→Shadow-Frog gap dissolves only at much higher budgets — at realistic budgets, shadow structure matters as much as shadow content.