diff --git a/.claude/sweep-accuracy-state.csv b/.claude/sweep-accuracy-state.csv
index 4e897c5e..9584b962 100644
--- a/.claude/sweep-accuracy-state.csv
+++ b/.claude/sweep-accuracy-state.csv
@@ -1,5 +1,6 @@
 module,last_inspected,issue,severity_max,categories_found,notes
 balanced_allocation,2026-04-14T12:00:00Z,1203,,,float32 allocation array caused source ID mismatch for non-integer IDs. Fix in PR #1205.
+bilateral,2026-05-01,,,,"No CRIT/HIGH/MEDIUM. Sigma underflow validated via sqrt(tiny) bound; oversize sigma clamped. float64 throughout numpy/cupy. NaN center returns NaN; NaN neighbors skipped (denom not incremented). w_sum>0 guard avoids div-by-zero. map_overlap depth==kernel radius. CUDA bounds correct. Inf input could yield 0*inf=NaN in v_sum but unvalidated input is general xrspatial pattern, not bilateral-specific."
 contour,2026-05-01,,,,"Marching squares correct: NaN check uses self-inequality, loop bounds (ny-1,nx-1) cover all quads, dask overlap depth=1 matches 2x2 stencil, float64 cast consistent across backends, saddle disambiguation via center value. No CRIT/HIGH issues; minor LOW (Inf inputs not specifically rejected) not flagged."
 cost_distance,2026-04-13T12:00:00Z,1191,,,CuPy Bellman-Ford max_iterations = h+w instead of h*w. Fix in PR #1192.
 curvature,2026-03-30T15:00:00Z,,,,Formula matches ArcGIS reference. Backends consistent. No issues found.