CLAUDE: Fix filterConv5dROI suppression condition

Suppress a point only when both conditions hold simultaneously:
  thresh = Math.max(athresh, M * rthresh)
  (M - val) >= thresh   →   zero the point

athresh enforces a minimum absolute gap; M*rthresh enforces a minimum
relative gap. Math.max means BOTH must be satisfied (either alone is
insufficient). Replaces the previous M>=athresh && val<rthresh*M logic.
Co-authored-by: Claude <claude@elphel.com>

src/main/java/com/elphel/imagej/cuas/rt/CuasRTUtils.java

@@ -1552,7 +1552,8 @@ public class CuasRTUtils {
     								}
     							}
     						}
-    						result[roi_pix][sub_idx][v_out_idx] = (M >= athresh && val < rthresh * M) ? 0 : val;
+    						double thresh = Math.max(athresh, M * rthresh);
+    						result[roi_pix][sub_idx][v_out_idx] = ((M - val) >= thresh) ? 0 : val;
     					}
     				}
     			}
@@ -1594,7 +1595,8 @@ public class CuasRTUtils {
     								}
     							}
     						}
-    						result[roi_pix][sub_idx][v_out_idx] = (M >= athresh && val < rthresh * M) ? 0 : val;
+    						double thresh = Math.max(athresh, M * rthresh);
+    						result[roi_pix][sub_idx][v_out_idx] = ((M - val) >= thresh) ? 0 : val;
     					}
     				}
     			}