perf(perception): bound low-step component fanout

config/perception/m48r3-additive-low-step-occupancy-v1.json

@@ -19,7 +19,7 @@
   "componentization": {
     "voxel_size_m": 0.45,
     "neighbor_radius_cells": 1,
-    "minimum_points": 2,
+    "minimum_points": 5,
     "minimum_voxels": 1,
     "local_radius_m": 10.0,
     "maximum_candidate_points_per_frame": 768,

config/perception/m48r3-native-low-step-reference-graph-shadow-v1.json

@@ -22,7 +22,7 @@
       "provider_id": "ravnoves00-additive-low-step-geometry/v1",
       "version": "0.1.0",
       "revision": "m48r3-ravnoves00-additive-low-step/v1",
-      "sha256": "62dd41400169080e1a38f713b283b67cdf201078c4c7fd807783fe6c1838082c"
+      "sha256": "0d46dcb28542902849ee31de4c4594ef90407834d9e5551474fc4191cadbf1a9"
     },
     {
       "role": "temporal",

experiments/perception/worker/Invoke-M48NNativeReferenceGraph.ps1

@@ -113,10 +113,10 @@ $expectedConfigs = [ordered]@{
 if ($AdditiveLowStep) {
     $expectedConfigs.Remove("m48n-rf-detr-native-reference-graph-shadow-v0.json")
     $expectedConfigs["m48r3-native-low-step-reference-graph-shadow-v1.json"] = (
-        "d5434825c3a73a9a070aea37927755771e07d38a017111d2014a8e8c88969227"
+        "5f5832a0a0c1879374b166071efed02de14aeda815046da5711d6f4053eb9af4"
     )
     $expectedConfigs["m48r3-additive-low-step-occupancy-v1.json"] = (
-        "62dd41400169080e1a38f713b283b67cdf201078c4c7fd807783fe6c1838082c"
+        "0d46dcb28542902849ee31de4c4594ef90407834d9e5551474fc4191cadbf1a9"
     )
 }
 foreach ($entry in $expectedConfigs.GetEnumerator()) {

tests/test_m48_low_step_occupancy.py

@@ -106,13 +106,19 @@ def test_wide_operator_region_cannot_bridge_two_spatial_components() -> None:
     points = np.asarray(
         (
             (0.00, 0.0, 5.00),
-            (0.10, 0.0, 5.05),
+            (0.02, 0.0, 5.00),
+            (0.04, 0.0, 5.00),
+            (0.06, 0.0, 5.00),
+            (0.08, 0.0, 5.00),
             (1.70, 0.0, 5.00),
-            (1.80, 0.0, 5.05),
+            (1.72, 0.0, 5.00),
+            (1.74, 0.0, 5.00),
+            (1.76, 0.0, 5.00),
+            (1.78, 0.0, 5.00),
         ),
         dtype=np.float64,
     )
-    store = _Store(_frame(points), np.ones(4, dtype=np.uint8))
+    store = _Store(_frame(points), np.ones(10, dtype=np.uint8))
     provider = M48AdditiveLowStepGeometryProvider(  # type: ignore[arg-type]
         store=store,
         profile=load_m48_low_step_occupancy_profile(PROFILE_PATH),
@@ -126,12 +132,15 @@ def test_wide_operator_region_cannot_bridge_two_spatial_components() -> None:
     )
 
     assert len(additive) == 2
-    assert {item.source_point_ids for item in additive} == {(0, 1), (2, 3)}
+    assert {item.source_point_ids for item in additive} == {
+        (0, 1, 2, 3, 4),
+        (5, 6, 7, 8, 9),
+    }
     assert all(item.semantic_hint is None for item in additive)
     assert all("occupied-only-never-free" in item.reason_codes for item in additive)
     snapshot = provider.snapshot()
     assert snapshot.additive_observation_count == 2
-    assert snapshot.additive_voxel_count == 3
+    assert snapshot.additive_voxel_count == 2
     assert snapshot.failed_frames == 0
 
 
@@ -141,9 +150,12 @@ def test_frame_1856_preserves_baseline_posts_and_splits_low_hemisphere_support()
         store=store,
         profile=load_m48_low_step_occupancy_profile(PROFILE_PATH),
     )
-    frame = store.frame_for_index(1856)
+    # Operator-anchor sequences are one-based display frame numbers, while the
+    # recorded-source packet and timeline use zero-based source sequences.
+    source_sequence = 1856 - 1
+    frame = store.frame_for_index(source_sequence)
     assert frame is not None
-    observations = provider.associate(_packet(1856), ())
+    observations = provider.associate(_packet(source_sequence), ())
     projected = project_map_points_kb4(
         frame.points_map,
         position_map_xyz=frame.sensor_position_map,