sessions/session_20260921_232344_289067/preprocessing/timing-belt-ribbon-prior-v1: payload batch 1/1

.gitattributes

@@ -813,3 +813,4 @@ sessions/session_20260921_232344_289067/preprocessing/c6a-input-preparation-v1/n
 sessions/session_20260921_232344_289067/preprocessing/c6a-input-preparation-v1/native/appearance_train_v1/input_case/session_20260921_232344_289067/points3D.ply filter=lfs diff=lfs merge=lfs -text
 sessions/session_20260921_232344_289067/preprocessing/c6a-input-preparation-v1/native/appearance_train_v1/model/point_cloud/iteration_10000/point_cloud.ply filter=lfs diff=lfs merge=lfs -text
 sessions/session_20260921_232344_289067/preprocessing/c6a-input-preparation-v1/native/appearance_train_v1/model/point_cloud/iteration_7000/point_cloud.ply filter=lfs diff=lfs merge=lfs -text
+sessions/session_20260921_232344_289067/preprocessing/timing-belt-ribbon-prior-v1/native/rerun/appearance_spline_prior.rrd filter=lfs diff=lfs merge=lfs -text

sessions/session_20260921_232344_289067/preprocessing/timing-belt-ribbon-prior-v1/native/colors/color_summary.json

@@ -0,0 +1,49 @@
+{
+  "rule": "native sRGB/255, cosine weighted over mask/depth/first-hit visible views",
+  "two_sided": true,
+  "depth_tolerance_m": 0.025,
+  "first_hit_tolerance_m": 0.0002,
+  "per_view": [
+    {
+      "view": 0,
+      "serial": "12540311",
+      "observed_vertices": 263,
+      "projected_inside": 450,
+      "first_hit": 379
+    },
+    {
+      "view": 1,
+      "serial": "12933256",
+      "observed_vertices": 176,
+      "projected_inside": 450,
+      "first_hit": 362
+    },
+    {
+      "view": 2,
+      "serial": "17736741",
+      "observed_vertices": 300,
+      "projected_inside": 450,
+      "first_hit": 365
+    },
+    {
+      "view": 3,
+      "serial": "23007103",
+      "observed_vertices": 285,
+      "projected_inside": 450,
+      "first_hit": 375
+    }
+  ],
+  "observed_vertices": 393,
+  "filled_vertices": 57,
+  "fill_color_rgb": [
+    0.40392156862745093,
+    0.34509803921568627,
+    0.2923340622683475
+  ],
+  "glb_roundtrip": {
+    "float32_positions_exact": true,
+    "vertex_colors_exact": true,
+    "uv_count": 0,
+    "vertex_reordered_on_open3d_load": true
+  }
+}

sessions/session_20260921_232344_289067/preprocessing/timing-belt-ribbon-prior-v1/native/colors/vertex_colors.npz

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e326dc6cfb203b81cd5dd564704736f77dd3341d714e2cfab9e3f3407dcb16c9
+size 15432

sessions/session_20260921_232344_289067/preprocessing/timing-belt-ribbon-prior-v1/native/hybrid/populations.npz

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9086802738c5ea3b05a5f56ad622e5775657e6b88163542d1acd0642a6a24e66
+size 2404718

sessions/session_20260921_232344_289067/preprocessing/timing-belt-ribbon-prior-v1/native/inputs/depth_offset_diagnostic.json

@@ -0,0 +1,90 @@
+{
+  "annulus_px": [
+    20,
+    80
+  ],
+  "interior_erosion_px": 2,
+  "correction_applied": false,
+  "views": [
+    {
+      "view": 0,
+      "serial": "12540311",
+      "annulus_count": 74148,
+      "belt_interior_count": 8280,
+      "belt_edge_count": 3252,
+      "table_median_z_m": -4.352607307039902e-05,
+      "belt_interior_median_z_m": 0.012525813068355651,
+      "belt_edge_median_z_m": 0.0008713293417847989,
+      "belt_minus_table_m": 0.01256933914142605,
+      "edge_minus_table_m": 0.000914855414855198,
+      "table_p10_p90_z_m": [
+        -0.0018673831350785042,
+        0.0011985741059319047
+      ],
+      "belt_interior_p10_p90_z_m": [
+        0.0010065012321364586,
+        0.026493068694722913
+      ]
+    },
+    {
+      "view": 1,
+      "serial": "12933256",
+      "annulus_count": 43588,
+      "belt_interior_count": 7839,
+      "belt_edge_count": 1977,
+      "table_median_z_m": -0.0003382319759696051,
+      "belt_interior_median_z_m": 0.008282491058796193,
+      "belt_edge_median_z_m": 0.002746544959047248,
+      "belt_minus_table_m": 0.008620723034765798,
+      "edge_minus_table_m": 0.003084776935016853,
+      "table_p10_p90_z_m": [
+        -0.0008626021833348485,
+        0.00020287459226578968
+      ],
+      "belt_interior_p10_p90_z_m": [
+        0.0003070594801364292,
+        0.018209743744855643
+      ]
+    },
+    {
+      "view": 2,
+      "serial": "17736741",
+      "annulus_count": 79252,
+      "belt_interior_count": 9442,
+      "belt_edge_count": 3802,
+      "table_median_z_m": 0.0022106602226864003,
+      "belt_interior_median_z_m": 0.007650337124667672,
+      "belt_edge_median_z_m": 0.003727536878046278,
+      "belt_minus_table_m": 0.005439676901981272,
+      "edge_minus_table_m": 0.0015168766553598778,
+      "table_p10_p90_z_m": [
+        0.0012418981287883103,
+        0.0030986497468127984
+      ],
+      "belt_interior_p10_p90_z_m": [
+        0.0041037672150814105,
+        0.01880508164753212
+      ]
+    },
+    {
+      "view": 3,
+      "serial": "23007103",
+      "annulus_count": 54569,
+      "belt_interior_count": 9524,
+      "belt_edge_count": 2797,
+      "table_median_z_m": 0.0005609506453687629,
+      "belt_interior_median_z_m": 0.012464615933365453,
+      "belt_edge_median_z_m": 0.0017488104713860864,
+      "belt_minus_table_m": 0.01190366528799669,
+      "edge_minus_table_m": 0.0011878598260173234,
+      "table_p10_p90_z_m": [
+        0.00012591874952745387,
+        0.0022313559632279436
+      ],
+      "belt_interior_p10_p90_z_m": [
+        0.0035697442340827724,
+        0.02255136103164361
+      ]
+    }
+  ]
+}

sessions/session_20260921_232344_289067/preprocessing/timing-belt-ribbon-prior-v1/native/inputs/observed_cloud.npz

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5014bfae89dcda44d691cd0e0a1ddc2b703d7bef3e88df832b7e8330c1159966
+size 2440084

sessions/session_20260921_232344_289067/preprocessing/timing-belt-ribbon-prior-v1/native/inputs/reference_views.json

@@ -0,0 +1,100 @@
+{
+  "case": "session_20260921_232344_289067",
+  "grid_sample": 0,
+  "views": [
+    {
+      "index": 0,
+      "serial": "12540311",
+      "native_frame": 0,
+      "offset_ms": 5.235392,
+      "object_mask_px": 11532,
+      "invalid_depth_in_mask_px": 0,
+      "occlusion_union_px": 396727,
+      "object_and_union_px": 0,
+      "lifted_points": 7570,
+      "lifted_z_min_max_m": [
+        -0.003095472860419224,
+        0.037356319756078116
+      ],
+      "uneroded_lifted_points": 11532,
+      "uneroded_lifted_z_min_max_m": [
+        -0.003980330904039375,
+        0.11590110848928825
+      ],
+      "eroded_lifted_points": 8280,
+      "erosion_removed_points": 3252,
+      "outlier_removed_points": 710
+    },
+    {
+      "index": 1,
+      "serial": "12933256",
+      "native_frame": 0,
+      "offset_ms": 0.0,
+      "object_mask_px": 9816,
+      "invalid_depth_in_mask_px": 0,
+      "occlusion_union_px": 372070,
+      "object_and_union_px": 0,
+      "lifted_points": 7775,
+      "lifted_z_min_max_m": [
+        -0.0016746866556479612,
+        0.02420237612826337
+      ],
+      "uneroded_lifted_points": 9816,
+      "uneroded_lifted_z_min_max_m": [
+        -0.001976900477980492,
+        0.0886931135952978
+      ],
+      "eroded_lifted_points": 7839,
+      "erosion_removed_points": 1977,
+      "outlier_removed_points": 64
+    },
+    {
+      "index": 2,
+      "serial": "17736741",
+      "native_frame": 0,
+      "offset_ms": 7.213615,
+      "object_mask_px": 13244,
+      "invalid_depth_in_mask_px": 0,
+      "occlusion_union_px": 392041,
+      "object_and_union_px": 104,
+      "lifted_points": 9192,
+      "lifted_z_min_max_m": [
+        -0.0005444746917362409,
+        0.0324137670864888
+      ],
+      "uneroded_lifted_points": 13244,
+      "uneroded_lifted_z_min_max_m": [
+        -0.0005444746917362409,
+        0.04215367082362609
+      ],
+      "eroded_lifted_points": 9442,
+      "erosion_removed_points": 3802,
+      "outlier_removed_points": 250
+    },
+    {
+      "index": 3,
+      "serial": "23007103",
+      "native_frame": 0,
+      "offset_ms": 15.848255,
+      "object_mask_px": 12321,
+      "invalid_depth_in_mask_px": 0,
+      "occlusion_union_px": 202994,
+      "object_and_union_px": 0,
+      "lifted_points": 9334,
+      "lifted_z_min_max_m": [
+        -0.0003614862283368714,
+        0.030787580276442905
+      ],
+      "uneroded_lifted_points": 12321,
+      "uneroded_lifted_z_min_max_m": [
+        -0.001508851195821892,
+        0.032079305080247866
+      ],
+      "eroded_lifted_points": 9524,
+      "erosion_removed_points": 2797,
+      "outlier_removed_points": 190
+    }
+  ],
+  "observed_points": 33871,
+  "mask_erosion_px": 2
+}

sessions/session_20260921_232344_289067/preprocessing/timing-belt-ribbon-prior-v1/native/manifest.json

@@ -0,0 +1,1036 @@
+{
+  "kind": "real_rgbd_appearance_spline_prior_v1",
+  "code": {
+    "commit": "5e1b4258a3efb3620c533a4073a37212d8bf9ee5",
+    "u_pin": "81c718790a37e5e0102eb77af2c6edd34a9db25f"
+  },
+  "steps": {
+    "colors": {
+      "status": "ok",
+      "settings": {
+        "depth_tolerance_m": 0.025
+      },
+      "outputs": {
+        "rule": "native sRGB/255, cosine weighted over mask/depth/first-hit visible views",
+        "two_sided": true,
+        "depth_tolerance_m": 0.025,
+        "first_hit_tolerance_m": 0.0002,
+        "per_view": [
+          {
+            "view": 0,
+            "serial": "12540311",
+            "observed_vertices": 263,
+            "projected_inside": 450,
+            "first_hit": 379
+          },
+          {
+            "view": 1,
+            "serial": "12933256",
+            "observed_vertices": 176,
+            "projected_inside": 450,
+            "first_hit": 362
+          },
+          {
+            "view": 2,
+            "serial": "17736741",
+            "observed_vertices": 300,
+            "projected_inside": 450,
+            "first_hit": 365
+          },
+          {
+            "view": 3,
+            "serial": "23007103",
+            "observed_vertices": 285,
+            "projected_inside": 450,
+            "first_hit": 375
+          }
+        ],
+        "observed_vertices": 393,
+        "filled_vertices": 57,
+        "fill_color_rgb": [
+          0.40392156862745093,
+          0.34509803921568627,
+          0.2923340622683475
+        ],
+        "glb_roundtrip": {
+          "float32_positions_exact": true,
+          "vertex_colors_exact": true,
+          "uv_count": 0,
+          "vertex_reordered_on_open3d_load": true
+        },
+        "files": {
+          "colors/vertex_colors.npz": "e326dc6cfb203b81cd5dd564704736f77dd3341d714e2cfab9e3f3407dcb16c9",
+          "colors/color_summary.json": "68edc9ac2d34e8343362f0bab9a37a0120b64c128c6b35cc4fe95a5269ab61d7",
+          "ribbon/shape_prior.glb": "a2a9728d596afe59e4da785c0d1c60c54cbefc7b19c69fff2582496a7357ba15",
+          "ribbon/ribbon.ply": "3ada8d9161bcd2d6b92489e46af8701d1547a96588537117bfa948a8bf9f015a",
+          "gaussian_data/session_20260921_232344_289067/shape_prior.glb": "a2a9728d596afe59e4da785c0d1c60c54cbefc7b19c69fff2582496a7357ba15"
+        }
+      },
+      "code": {
+        "commit": "5e1b4258a3efb3620c533a4073a37212d8bf9ee5",
+        "u_pin": "81c718790a37e5e0102eb77af2c6edd34a9db25f"
+      },
+      "wall_time_s": 1.210578203201294
+    },
+    "diagnose-depth": {
+      "status": "ok",
+      "settings": {
+        "correction": "none",
+        "annulus_px": [
+          20,
+          80
+        ]
+      },
+      "outputs": {
+        "report": {
+          "annulus_px": [
+            20,
+            80
+          ],
+          "interior_erosion_px": 2,
+          "correction_applied": false,
+          "views": [
+            {
+              "view": 0,
+              "serial": "12540311",
+              "annulus_count": 74148,
+              "belt_interior_count": 8280,
+              "belt_edge_count": 3252,
+              "table_median_z_m": -4.352607307039902e-05,
+              "belt_interior_median_z_m": 0.012525813068355651,
+              "belt_edge_median_z_m": 0.0008713293417847989,
+              "belt_minus_table_m": 0.01256933914142605,
+              "edge_minus_table_m": 0.000914855414855198,
+              "table_p10_p90_z_m": [
+                -0.0018673831350785042,
+                0.0011985741059319047
+              ],
+              "belt_interior_p10_p90_z_m": [
+                0.0010065012321364586,
+                0.026493068694722913
+              ]
+            },
+            {
+              "view": 1,
+              "serial": "12933256",
+              "annulus_count": 43588,
+              "belt_interior_count": 7839,
+              "belt_edge_count": 1977,
+              "table_median_z_m": -0.0003382319759696051,
+              "belt_interior_median_z_m": 0.008282491058796193,
+              "belt_edge_median_z_m": 0.002746544959047248,
+              "belt_minus_table_m": 0.008620723034765798,
+              "edge_minus_table_m": 0.003084776935016853,
+              "table_p10_p90_z_m": [
+                -0.0008626021833348485,
+                0.00020287459226578968
+              ],
+              "belt_interior_p10_p90_z_m": [
+                0.0003070594801364292,
+                0.018209743744855643
+              ]
+            },
+            {
+              "view": 2,
+              "serial": "17736741",
+              "annulus_count": 79252,
+              "belt_interior_count": 9442,
+              "belt_edge_count": 3802,
+              "table_median_z_m": 0.0022106602226864003,
+              "belt_interior_median_z_m": 0.007650337124667672,
+              "belt_edge_median_z_m": 0.003727536878046278,
+              "belt_minus_table_m": 0.005439676901981272,
+              "edge_minus_table_m": 0.0015168766553598778,
+              "table_p10_p90_z_m": [
+                0.0012418981287883103,
+                0.0030986497468127984
+              ],
+              "belt_interior_p10_p90_z_m": [
+                0.0041037672150814105,
+                0.01880508164753212
+              ]
+            },
+            {
+              "view": 3,
+              "serial": "23007103",
+              "annulus_count": 54569,
+              "belt_interior_count": 9524,
+              "belt_edge_count": 2797,
+              "table_median_z_m": 0.0005609506453687629,
+              "belt_interior_median_z_m": 0.012464615933365453,
+              "belt_edge_median_z_m": 0.0017488104713860864,
+              "belt_minus_table_m": 0.01190366528799669,
+              "edge_minus_table_m": 0.0011878598260173234,
+              "table_p10_p90_z_m": [
+                0.00012591874952745387,
+                0.0022313559632279436
+              ],
+              "belt_interior_p10_p90_z_m": [
+                0.0035697442340827724,
+                0.02255136103164361
+              ]
+            }
+          ]
+        },
+        "files": {
+          "inputs/depth_offset_diagnostic.json": "4d853c031e598c5ea500e6e3c03db86fbf6ca8e5838db04dd579d7fd8b1ee8f5"
+        }
+      },
+      "code": {
+        "commit": "5e1b4258a3efb3620c533a4073a37212d8bf9ee5",
+        "u_pin": "81c718790a37e5e0102eb77af2c6edd34a9db25f"
+      },
+      "wall_time_s": 0.3097982406616211
+    },
+    "fit": {
+      "status": "ok",
+      "settings": {
+        "object": {
+          "name": "grey_timing_belt",
+          "representation": "ribbon",
+          "fitter_source": "spline_estimation.timing_belt_fitting (scratch/test_timing_belt_perception.py)",
+          "dimension_source": "demonstrated 25 mm width; surface only, no interior (corpus Q1, 2026-10-25)",
+          "radius_m": null,
+          "ribbon_width_m": 0.025,
+          "step_t": 0.1,
+          "step_angle_deg": null,
+          "u_resolution": 5,
+          "overlap_rule": null,
+          "twist_penalty": {
+            "samples": 250,
+            "threshold_per_m": 10.0,
+            "huber_per_m": 30.0,
+            "cap_per_m": 80.0,
+            "weight": 5e-08
+          }
+        },
+        "max_rounds": 400,
+        "relative_loss_tolerance": 1e-07,
+        "reprojection": {
+          "weight": 4.0,
+          "direction": "visible mask pixels to projected centerline",
+          "ribbon_twist_stage": "two-sided (owner Q11): visible mask pixels to projected width segments plus visible projected surface samples (off the occlusion union) to the nearest mask pixel",
+          "mask": "accepted object outside hand/occluder union",
+          "view_aggregation": "equal view means",
+          "distance": "metric image plane using per-view median visible belt depth and fx/fy",
+          "samples": 360,
+          "huber_delta_m": 0.005,
+          "smooth_cap_m": 0.035,
+          "baseline_run": null
+        },
+        "loss_config": {
+          "eval_distances": true,
+          "max_saturation_distance": 0.035,
+          "distance_huber_delta": 0.005,
+          "eval_curvature_cost": true,
+          "num_eval_reg_points": 250,
+          "lambda_curvature_cost": 5e-08,
+          "max_curvature": 10.0,
+          "curvature_huber_delta": 30.0,
+          "max_saturation_curvature": 80.0,
+          "eval_curvilinear_energy": false,
+          "lambda_curvilinear_energy": 0.001,
+          "eval_length_constraint": true,
+          "lambda_length_constraint": 0.1,
+          "arclength_bounds": [
+            0.6639999747276306,
+            0.6660000085830688
+          ]
+        },
+        "solver_config": {
+          "solver_type": "lbfgs",
+          "linesearch_type": "zoom",
+          "max_linesearch_steps": 10,
+          "grad_norm_tolerance": 0.0003,
+          "max_iter": 25
+        },
+        "ribbon_twist_refinement": {
+          "stage": "2 of 2; centerline control points frozen at stage 1, nine raw twist knots free",
+          "start": "stage-1 knots reduced modulo pi to bounded twist in (-pi/2, pi/2]",
+          "loss": "3D ribbon distance + weight x two-sided surface mask term + twist penalty",
+          "twist_penalty": {
+            "samples": 250,
+            "threshold_per_m": 10.0,
+            "huber_per_m": 30.0,
+            "cap_per_m": 80.0,
+            "weight": 5e-08
+          },
+          "solver": "SciPy L-BFGS-B, knots within +-pi*atanh(0.8) (twist within +-0.8 pi); objective / start value; ftol 1e-7 (the stage-1 relative rule), gtol 1e-12, maxls 20, maxiter = rounds x 25"
+        }
+      },
+      "outputs": {
+        "filter": {
+          "method": "Open3D.remove_statistical_outlier",
+          "nb_neighbors": 20,
+          "std_ratio": 2.0,
+          "input_count": 35085,
+          "kept_count": 33871,
+          "removed_count": 1214,
+          "per_view": [
+            {
+              "view": 0,
+              "input": 8280,
+              "kept": 7570,
+              "removed": 710,
+              "live_20_0.05_kept": 3722,
+              "no_filter_kept": 8280
+            },
+            {
+              "view": 1,
+              "input": 7839,
+              "kept": 7775,
+              "removed": 64,
+              "live_20_0.05_kept": 6607,
+              "no_filter_kept": 7839
+            },
+            {
+              "view": 2,
+              "input": 9442,
+              "kept": 9192,
+              "removed": 250,
+              "live_20_0.05_kept": 6816,
+              "no_filter_kept": 9442
+            },
+            {
+              "view": 3,
+              "input": 9524,
+              "kept": 9334,
+              "removed": 190,
+              "live_20_0.05_kept": 3319,
+              "no_filter_kept": 9524
+            }
+          ]
+        },
+        "rounds": 1,
+        "stop": "gradient_tolerance",
+        "final": {
+          "loss": 1.1237652870477177e-05,
+          "components": {
+            "distance": 7.367207672359655e-06,
+            "curvature": 1.0450064813483095e-08,
+            "arclength": 0.0,
+            "mask_reprojection_2d": 3.859995103994152e-06,
+            "twist": 0.0
+          },
+          "grad_norm": 1.9226885683565342e-07,
+          "arclength_m": 0.6651527285575867,
+          "arclength_bound_active_within_1mm": true,
+          "max_curvature_per_m": 13.33471965789795,
+          "curvature_p50_p90_per_m": [
+            9.282670021057129,
+            10.820546054840088
+          ],
+          "curvature_above_max_fraction": 0.308,
+          "mean_distance_m": 0.003198116007875234,
+          "max_distance_m": 0.01685294136404991,
+          "beyond_2delta_fraction": 0.026955212423607215,
+          "at_cap_fraction": 0.0,
+          "per_view": [
+            {
+              "view": 0,
+              "count": 7570,
+              "median_m": 0.0029242488089948893,
+              "p90_m": 0.007353567285463215,
+              "max_m": 0.01685294136404991,
+              "beyond_2delta_fraction": 0.04332892998678996,
+              "at_cap_fraction": 0.0
+            },
+            {
+              "view": 1,
+              "count": 7775,
+              "median_m": 0.001648138277232647,
+              "p90_m": 0.003992185462266208,
+              "max_m": 0.011608102358877659,
+              "beyond_2delta_fraction": 0.0012861736334405145,
+              "at_cap_fraction": 0.0
+            },
+            {
+              "view": 2,
+              "count": 9192,
+              "median_m": 0.0026702620089054108,
+              "p90_m": 0.006379609368741512,
+              "max_m": 0.014514784328639507,
+              "beyond_2delta_fraction": 0.014795474325500435,
+              "at_cap_fraction": 0.0
+            },
+            {
+              "view": 3,
+              "count": 9334,
+              "median_m": 0.003434953046962619,
+              "p90_m": 0.008424665406346326,
+              "max_m": 0.013988911174237728,
+              "beyond_2delta_fraction": 0.047032354831797726,
+              "at_cap_fraction": 0.0
+            }
+          ],
+          "ribbon": {
+            "width_m": 0.02500000037252903,
+            "twist_rate_p90_max_per_m": [
+              4.5281346321105955,
+              5.51102352142334
+            ],
+            "theta_at_knots_rad": [
+              0.17175230383872986,
+              0.12343287467956543,
+              -0.16286520659923553,
+              0.13123610615730286,
+              0.054121848195791245,
+              0.029660869389772415,
+              -0.05292040854692459,
+              0.046316180378198624,
+              -0.0008353590965270996
+            ],
+            "theta_min_max_rad": [
+              -0.16320009529590607,
+              0.2056664377450943
+            ],
+            "width_direction_abs_z_mean": 0.9865195029855972,
+            "closest_u_abs_mean": 0.45764394067745867,
+            "closest_u_at_width_edge_fraction": 0.08857134421776741
+          },
+          "raw_theta": [
+            0.224350051514281,
+            0.2225316865171331,
+            -0.3734981744049238,
+            0.2933927922175766,
+            -0.01219774591007451,
+            0.08016144746182038,
+            -0.1304775246979825,
+            0.12419607937912537,
+            -0.08838957842341862
+          ]
+        },
+        "deterministic": true,
+        "partial_view_witness": {
+          "source": "synthetic upright elliptical band, four retained RP2 camera centres, both faces",
+          "seed": 6,
+          "noise_sigma_m": 0.0015,
+          "points": 288,
+          "ribbon_width_m": 0.025,
+          "truth_arclength_m": 0.664979607632856,
+          "fit_arclength_m": 0.6637030839920044,
+          "mean_point_to_ribbon_m": 0.001368213794194162,
+          "mean_centerline_distance_to_truth_m": 0.0006031105826376801,
+          "max_centerline_distance_to_truth_m": 0.0015569646493600495,
+          "width_direction_abs_z_mean": 0.9987052460417335,
+          "width_direction_abs_z_min": 0.9958789046536549,
+          "theta_min_max_rad": [
+            -0.06795810163021088,
+            0.07201700657606125
+          ],
+          "rounds": 1,
+          "stop": "gradient_tolerance",
+          "twist_iterations": 10,
+          "twist_stop": "CONVERGENCE: RELATIVE REDUCTION OF F <= FACTR*EPSMCH"
+        },
+        "stage1_final": {
+          "loss": 6.216802285052836e-05,
+          "components": {
+            "distance": 7.560265203210292e-06,
+            "curvature": 1.0450064813483095e-08,
+            "arclength": 0.0,
+            "mask_reprojection_2d": 5.459730527945794e-05
+          },
+          "grad_norm": 0.0002598846622277051,
+          "arclength_m": 0.6651527285575867,
+          "arclength_bound_active_within_1mm": true,
+          "max_curvature_per_m": 13.33471965789795,
+          "curvature_p50_p90_per_m": [
+            9.282670021057129,
+            10.820546054840088
+          ],
+          "curvature_above_max_fraction": 0.308,
+          "mean_distance_m": 0.003232557983392146,
+          "max_distance_m": 0.01685982197523117,
+          "beyond_2delta_fraction": 0.026335213014082842,
+          "at_cap_fraction": 0.0,
+          "per_view": [
+            {
+              "view": 0,
+              "count": 7570,
+              "median_m": 0.0027625395450741053,
+              "p90_m": 0.006850075442343951,
+              "max_m": 0.01685982197523117,
+              "beyond_2delta_fraction": 0.037912813738441214,
+              "at_cap_fraction": 0.0
+            },
+            {
+              "view": 1,
+              "count": 7775,
+              "median_m": 0.0015926621854305267,
+              "p90_m": 0.004055186919867993,
+              "max_m": 0.012580669485032558,
+              "beyond_2delta_fraction": 0.003215434083601286,
+              "at_cap_fraction": 0.0
+            },
+            {
+              "view": 2,
+              "count": 9192,
+              "median_m": 0.002768805017694831,
+              "p90_m": 0.00687651508487761,
+              "max_m": 0.014243477955460548,
+              "beyond_2delta_fraction": 0.016318537859007835,
+              "at_cap_fraction": 0.0
+            },
+            {
+              "view": 3,
+              "count": 9334,
+              "median_m": 0.0035868656123057008,
+              "p90_m": 0.00882271332666278,
+              "max_m": 0.014744928106665611,
+              "beyond_2delta_fraction": 0.04606813799014356,
+              "at_cap_fraction": 0.0
+            }
+          ],
+          "ribbon": {
+            "width_m": 0.02500000037252903,
+            "twist_rate_p90_max_per_m": [
+              0.00020870492007816208,
+              0.00022879095922689885
+            ],
+            "theta_at_knots_rad": [
+              -4.17181036027614e-06,
+              -1.3357976968109142e-05,
+              -1.4758956240257248e-05,
+              -5.6825392675818875e-06,
+              2.622646206873469e-07,
+              1.2873685591330286e-05,
+              1.2678148777922615e-05,
+              9.864397725323215e-06,
+              1.164659443020355e-05
+            ],
+            "theta_min_max_rad": [
+              -1.5565981811960228e-05,
+              1.4422106687561609e-05
+            ],
+            "width_direction_abs_z_mean": 0.9953029922006278,
+            "closest_u_abs_mean": 0.4552888864854409,
+            "closest_u_at_width_edge_fraction": 0.08836467774792596
+          },
+          "round": 1,
+          "relative_loss_change": 0.986454845074378
+        },
+        "twist": {
+          "start_raw_theta": [
+            -7.182093213499462e-06,
+            -1.3774796571030546e-05,
+            -1.7866581401874688e-05,
+            -3.312614126117615e-06,
+            -2.978195425385803e-06,
+            1.6798983779091855e-05,
+            1.3024369764099943e-05,
+            7.172425739566918e-06,
+            1.7472308172686037e-05
+          ],
+          "start_loss": 1.1731611266441178e-05,
+          "bound_raw": 3.451392295223203,
+          "knots_at_bound": 0,
+          "iterations": 9,
+          "evaluations": 43,
+          "stop": "CONVERGENCE: RELATIVE REDUCTION OF F <= FACTR*EPSMCH",
+          "success": true
+        },
+        "files": {
+          "spline/reprojection_residuals.npz": "78ecdf1af1189809bdb6e3500b85cfad6eebf97171f0b22a00436033ab67e34f",
+          "spline/residuals.npz": "75db82610eb48e3a853ec71729942ce7aedacdadd36e234b78415a7d6210fcf4",
+          "spline/filtered_cloud.npz": "d3e44988061dbdb7bac2b7eea6fa8ddf63b7506440b7939ace457825c319582b",
+          "spline/spline_init.json": "b444ee06ad87c4ef3cc99752e7ee5924291ac19e67d8ff8c2acbc781f3880b41",
+          "spline/determinism.json": "b238707bd37cab1390a5e728787545bdbd08f2a945cbcb9d6f997fcb7379b757",
+          "spline/filter.json": "cd1f44ca92cc1e2a6e34848c26007ce1a6acdec346732623bd15558066cbbdb4",
+          "spline/witness.json": "e80376660858f99ef7b92753bc7ee6ca8a27701d144dc446a2d910197fb4abc5",
+          "spline/filter_removed.npz": "447275bb98185cb5f01ad2c7e11ab8a4ea91cc889060af4942c6fd00b231902e",
+          "spline/spline_stage1.json": "8e65a22a14060f1a0dfd2a7e5a3093115f425b53841c567715f9deff86d037a0",
+          "spline/twist_trajectory.jsonl": "6834f966d03abe7e83dc30ae8f44a80cbb70faf242164520e5adb464d3f4e2a7",
+          "spline/spline_fit.json": "4e7bd3210208be2795e4f2b119870f7c0df56d239da01fb0518fdd02519c19ce",
+          "spline/rounds.jsonl": "2695a124b9f56d7a29c3eb8ff0581a4c0487adfc284469f5274b04b24cfb169e",
+          "spline/init_ellipse.json": "907518c19c34277b98f0f52ab30cc8c729f599c4bfdc977c90966c7b183c53c0",
+          "spline/reprojection.json": "a7e01a54204132331b126ce358baf7d1535667aaec7605b8101dbed951e98273"
+        }
+      },
+      "code": {
+        "commit": "5e1b4258a3efb3620c533a4073a37212d8bf9ee5",
+        "u_pin": "81c718790a37e5e0102eb77af2c6edd34a9db25f"
+      },
+      "wall_time_s": 52.88419222831726
+    },
+    "hybrid": {
+      "status": "ok",
+      "settings": {
+        "u_pin": "81c718790a37e5e0102eb77af2c6edd34a9db25f",
+        "numpy_seed": 0,
+        "points_per_triangle": 30
+      },
+      "outputs": {
+        "counts": {
+          "observed": 33871,
+          "mesh": 21600,
+          "total": 55471,
+          "mesh_to_observed": 0.6377136783679254
+        },
+        "files": {
+          "hybrid/populations.npz": "9086802738c5ea3b05a5f56ad622e5775657e6b88163542d1acd0642a6a24e66"
+        }
+      },
+      "code": {
+        "commit": "5e1b4258a3efb3620c533a4073a37212d8bf9ee5",
+        "u_pin": "81c718790a37e5e0102eb77af2c6edd34a9db25f"
+      },
+      "wall_time_s": 0.861283540725708
+    },
+    "inputs": {
+      "status": "ok",
+      "settings": {
+        "object": "grey_timing_belt",
+        "depth_source": "waft_stereo_dav2l5",
+        "depth_stream_ids": [
+          "zed_12540311_depth_waft_stereo_synlarge_dav2l5_zdepth",
+          "zed_12933256_depth_waft_stereo_synlarge_dav2l5_zdepth",
+          "zed_17736741_depth_waft_stereo_synlarge_dav2l5_zdepth",
+          "zed_23007103_depth_waft_stereo_synlarge_dav2l5_zdepth"
+        ],
+        "frames": "/mnt/data2/magna/belt_perception_shared/phystwin_model_corpus_expansion/lab/session_20260921_232344_289067/window_anchor0308-0680/accepted_input_preparation_c6a_v1/frames_waft/per_camera_inputs.json",
+        "frames_sha256": "f4fd3f4818c969d7515a3ce877fbb11f2f276034b83a94d405ded4c9471e08f6",
+        "signed_native_frames_sha256": {
+          "12540311": "7d13cca73356180d1df0e4f43d34038541a6ceed0e6a6ceef4a009a4adbcb443",
+          "12933256": "3898820a2d5702ed2290dbff080d24a4488ec9c9508b2550fdad9292cb655daf",
+          "17736741": "7964c8ea3c94455a7d53ffe39528265cad1ce63b7374b1d5e31cb9b9d0868ab5",
+          "23007103": "100a89ad75e6e3b7629ca330a71e943c49d5a6b794c4fad7ce0f0d1011287973"
+        },
+        "camera_frames_sha256": {
+          "12540311": "0e62111061e513ede21b08c848102ac2ba728791c3700dba7bfaad71c169f482",
+          "12933256": "c1029df8508c0619664798dfc5aabb0e9b39ae1ffd400ff8abf8e7a8ac778298",
+          "17736741": "743b2d551f6c9ddf613c42a3eb51c486307f4e462c3833757c8d13c3bf67a651",
+          "23007103": "90b0b56b561de50e8f26c0ad2140fad7aa30af54af7916d6d5b2327a098ba8f5"
+        },
+        "mask_erosion_px": 2,
+        "filter": {
+          "method": "Open3D.remove_statistical_outlier",
+          "nb_neighbors": 20,
+          "std_ratio": 2.0,
+          "input_count": 35085,
+          "kept_count": 33871,
+          "removed_count": 1214,
+          "per_view": [
+            {
+              "view": 0,
+              "input": 8280,
+              "kept": 7570,
+              "removed": 710,
+              "live_20_0.05_kept": 3722,
+              "no_filter_kept": 8280
+            },
+            {
+              "view": 1,
+              "input": 7839,
+              "kept": 7775,
+              "removed": 64,
+              "live_20_0.05_kept": 6607,
+              "no_filter_kept": 7839
+            },
+            {
+              "view": 2,
+              "input": 9442,
+              "kept": 9192,
+              "removed": 250,
+              "live_20_0.05_kept": 6816,
+              "no_filter_kept": 9442
+            },
+            {
+              "view": 3,
+              "input": 9524,
+              "kept": 9334,
+              "removed": 190,
+              "live_20_0.05_kept": 3319,
+              "no_filter_kept": 9524
+            }
+          ]
+        },
+        "parent": null,
+        "unfitted_inputs": true,
+        "fitting_bundle_sha256": "1ed703388557c909b98519d060ae95c6c55e6b1705cc564911e312a2eb87478b",
+        "signoffs": {
+          "/mnt/data2/magna/belt_perception_shared/phystwin_model_corpus_expansion/lab/session_20260921_232344_289067/window_anchor0308-0680/native_inputs/cameras/12540311/review_signoff.json": "75c1490787a1d7f40bcc3fa9c2d96793c84fd92f5484969acb5d37148b2022f5",
+          "/mnt/data2/magna/belt_perception_shared/phystwin_model_corpus_expansion/lab/session_20260921_232344_289067/window_anchor0308-0680/native_inputs/cameras/12540311/review_signoff_occluder.json": "de62af053fdeba1cc4c339240b9590d7a26d61fcd3061c22368682cd48bdfaaa",
+          "/mnt/data2/magna/belt_perception_shared/phystwin_model_corpus_expansion/lab/session_20260921_232344_289067/window_anchor0308-0680/native_inputs/cameras/12933256/review_signoff.json": "9d17c94dcb58037e9be7b06052e7c8fff311c8559f057b6a25fd4366d59f8339",
+          "/mnt/data2/magna/belt_perception_shared/phystwin_model_corpus_expansion/lab/session_20260921_232344_289067/window_anchor0308-0680/native_inputs/cameras/12933256/review_signoff_occluder.json": "25c9625660f838509df189f721e43fc56de588029918a212ba8a037689820ca3",
+          "/mnt/data2/magna/belt_perception_shared/phystwin_model_corpus_expansion/lab/session_20260921_232344_289067/window_anchor0308-0680/native_inputs/cameras/17736741/review_signoff.json": "33282322e617ca169666b8ad25cbac6ca2612ae32f7b68f3d6f3d004c970b240",
+          "/mnt/data2/magna/belt_perception_shared/phystwin_model_corpus_expansion/lab/session_20260921_232344_289067/window_anchor0308-0680/native_inputs/cameras/17736741/review_signoff_occluder.json": "e4b773bc305371aadd2add89cde0392b1f51abf591bfe8938c85cded065c4535",
+          "/mnt/data2/magna/belt_perception_shared/phystwin_model_corpus_expansion/lab/session_20260921_232344_289067/window_anchor0308-0680/native_inputs/cameras/23007103/review_signoff.json": "552b876b20d4180d65904599d19a845ab71cb3a83a054d65f4e2ef93df51e435",
+          "/mnt/data2/magna/belt_perception_shared/phystwin_model_corpus_expansion/lab/session_20260921_232344_289067/window_anchor0308-0680/native_inputs/cameras/23007103/review_signoff_occluder.json": "71c7ff1d58c0086a81f44e7c81886ce3f11e6dd8b5c6470f330067436e4d72fc"
+        }
+      },
+      "outputs": {
+        "reference": {
+          "case": "session_20260921_232344_289067",
+          "grid_sample": 0,
+          "views": [
+            {
+              "index": 0,
+              "serial": "12540311",
+              "native_frame": 0,
+              "offset_ms": 5.235392,
+              "object_mask_px": 11532,
+              "invalid_depth_in_mask_px": 0,
+              "occlusion_union_px": 396727,
+              "object_and_union_px": 0,
+              "lifted_points": 7570,
+              "lifted_z_min_max_m": [
+                -0.003095472860419224,
+                0.037356319756078116
+              ],
+              "uneroded_lifted_points": 11532,
+              "uneroded_lifted_z_min_max_m": [
+                -0.003980330904039375,
+                0.11590110848928825
+              ],
+              "eroded_lifted_points": 8280,
+              "erosion_removed_points": 3252,
+              "outlier_removed_points": 710
+            },
+            {
+              "index": 1,
+              "serial": "12933256",
+              "native_frame": 0,
+              "offset_ms": 0.0,
+              "object_mask_px": 9816,
+              "invalid_depth_in_mask_px": 0,
+              "occlusion_union_px": 372070,
+              "object_and_union_px": 0,
+              "lifted_points": 7775,
+              "lifted_z_min_max_m": [
+                -0.0016746866556479612,
+                0.02420237612826337
+              ],
+              "uneroded_lifted_points": 9816,
+              "uneroded_lifted_z_min_max_m": [
+                -0.001976900477980492,
+                0.0886931135952978
+              ],
+              "eroded_lifted_points": 7839,
+              "erosion_removed_points": 1977,
+              "outlier_removed_points": 64
+            },
+            {
+              "index": 2,
+              "serial": "17736741",
+              "native_frame": 0,
+              "offset_ms": 7.213615,
+              "object_mask_px": 13244,
+              "invalid_depth_in_mask_px": 0,
+              "occlusion_union_px": 392041,
+              "object_and_union_px": 104,
+              "lifted_points": 9192,
+              "lifted_z_min_max_m": [
+                -0.0005444746917362409,
+                0.0324137670864888
+              ],
+              "uneroded_lifted_points": 13244,
+              "uneroded_lifted_z_min_max_m": [
+                -0.0005444746917362409,
+                0.04215367082362609
+              ],
+              "eroded_lifted_points": 9442,
+              "erosion_removed_points": 3802,
+              "outlier_removed_points": 250
+            },
+            {
+              "index": 3,
+              "serial": "23007103",
+              "native_frame": 0,
+              "offset_ms": 15.848255,
+              "object_mask_px": 12321,
+              "invalid_depth_in_mask_px": 0,
+              "occlusion_union_px": 202994,
+              "object_and_union_px": 0,
+              "lifted_points": 9334,
+              "lifted_z_min_max_m": [
+                -0.0003614862283368714,
+                0.030787580276442905
+              ],
+              "uneroded_lifted_points": 12321,
+              "uneroded_lifted_z_min_max_m": [
+                -0.001508851195821892,
+                0.032079305080247866
+              ],
+              "eroded_lifted_points": 9524,
+              "erosion_removed_points": 2797,
+              "outlier_removed_points": 190
+            }
+          ],
+          "observed_points": 33871,
+          "mask_erosion_px": 2
+        },
+        "files": {
+          "inputs/observed_cloud.npz": "5014bfae89dcda44d691cd0e0a1ddc2b703d7bef3e88df832b7e8330c1159966",
+          "inputs/reference_views.json": "d47af069f367a03e3adfe3414f0b77358eca9852c46d68f1f1e460eff2820858",
+          "gaussian_data/session_20260921_232344_289067/0.png": "2f224039efb1b63a478c816344faafbe189202504687afca97e30fd84a42f119",
+          "gaussian_data/session_20260921_232344_289067/mask_0.png": "f9061c84385e52b981496b79122f0cdb5881e16426af2b2e5198392989419ee6",
+          "gaussian_data/session_20260921_232344_289067/mask_human_0.png": "0cbd9c2b1aa4bb7bf6e14251b12a620af4a25ca913392efc07a007da86a88325",
+          "gaussian_data/session_20260921_232344_289067/0_depth.npy": "db38aaed366244de4b775c2b49d41645c6c96e643bc267006c03af758b414fee",
+          "gaussian_data/session_20260921_232344_289067/1.png": "22f1ed096054714ecec893f03c5c369c5b67fa4145aa7c96ad686e788a037c5e",
+          "gaussian_data/session_20260921_232344_289067/mask_1.png": "9bd51b8d5e01be8011c831610b060a4226bc476ab150a9f10f15a1ea46f4bbf6",
+          "gaussian_data/session_20260921_232344_289067/mask_human_1.png": "56d054bc576723563efb2c3d15199e5a317f3da3b692c184d7b1b7d43d324d46",
+          "gaussian_data/session_20260921_232344_289067/1_depth.npy": "6f368dbc2a8d3a4abfbb728d0620db9e344dbbfb5cefcebbe2793fb42fbb95f2",
+          "gaussian_data/session_20260921_232344_289067/2.png": "dd38a07c133f74df8098b2a92f5f1b224b5f7b8df19618cc77d9defd5aefbe83",
+          "gaussian_data/session_20260921_232344_289067/mask_2.png": "a62e0cab61ca6facbda05baa24551b3be06cf85fcac6dc1cef13b7793dd46043",
+          "gaussian_data/session_20260921_232344_289067/mask_human_2.png": "421ab278d155eac8fd86aa5c568d15157c041bb011b6fecb110ef7667d4a2e08",
+          "gaussian_data/session_20260921_232344_289067/2_depth.npy": "369d806583d7c1749e0a672662dd3cfb9a7488fba1233bfffd1c25655deebb49",
+          "gaussian_data/session_20260921_232344_289067/3.png": "57825e091f058ead76b3d07da1abe23eed172e60d6b31b47980cbb20092bc757",
+          "gaussian_data/session_20260921_232344_289067/mask_3.png": "2f1f0e12bb5c1e3e920a2e6bf5fea75a97c12334f5f621cbe3cc86c753aff82f",
+          "gaussian_data/session_20260921_232344_289067/mask_human_3.png": "0fe05526b59a8f7c1f20385372b37b938ffe6be20181e29b6751edd6d49fc7ec",
+          "gaussian_data/session_20260921_232344_289067/3_depth.npy": "244abb48cd6f8ff24a334debe386803b6cabafaaaa3e10797cd2bd9f896f3e18",
+          "gaussian_data/session_20260921_232344_289067/camera_meta.pkl": "857b8d34ddf7bdbf11cc9f299b17f71c92e2dd134c3c82f6b5d85418668baa52",
+          "gaussian_data/session_20260921_232344_289067/interp_poses.pkl": "b90cc26123c822f0d06446ac699e110db22a86e265c56751819029a46f558b6f",
+          "gaussian_data/session_20260921_232344_289067/observation.ply": "9537f54102aac6cd195dde3186fd7045fd292bb285af16f191425a5550b97b73",
+          "spline/filter.json": "cd1f44ca92cc1e2a6e34848c26007ce1a6acdec346732623bd15558066cbbdb4",
+          "spline/filter_removed.npz": "447275bb98185cb5f01ad2c7e11ab8a4ea91cc889060af4942c6fd00b231902e",
+          "spline/filtered_cloud.npz": "d3e44988061dbdb7bac2b7eea6fa8ddf63b7506440b7939ace457825c319582b"
+        }
+      },
+      "code": {
+        "commit": "5e1b4258a3efb3620c533a4073a37212d8bf9ee5",
+        "u_pin": "81c718790a37e5e0102eb77af2c6edd34a9db25f"
+      },
+      "wall_time_s": 31.010278463363647
+    },
+    "review": {
+      "status": "ok",
+      "settings": {
+        "historical_prior": null,
+        "historical_sha256": null,
+        "baseline_fit": null
+      },
+      "outputs": {
+        "review_files": 53,
+        "files": {
+          "review/hybrid/combined.png": "95b266a59c3f3582fff94445b4d074159dea173723e2a3b7e1b6b48f2a7d90bc",
+          "review/hybrid/mesh.png": "91e3ca6ea717a7cd79b72a7a19f8610b215b5c5d445e807a61277bed8195ca1e",
+          "review/hybrid/observed.png": "ad86cdba1844175da2713b06e8f4d04b4f370f2704e0fee0d5bce11d239d080e",
+          "review/inputs/depth_offset_table.json": "4d853c031e598c5ea500e6e3c03db86fbf6ca8e5838db04dd579d7fd8b1ee8f5",
+          "review/inputs/depth_offset.png": "f4073f0ca6e56b0ed51b4c4234d2ceb9760ed73acb9b1fff36dd3d3b1d5a30fa",
+          "review/inputs/view_3_23007103.png": "ab0e1bef372d256efdbfff2cff65c2ec1b905b4d7bffcfad9e05ebe11772c66b",
+          "review/inputs/view_0_12540311.png": "95791bcb85333b360d9e93c259d49a5d4013634b44acae07466443dc3390b880",
+          "review/inputs/view_1_12933256.png": "4c1e3a30862039bf1eb36a321f68e14a47d3a9996c390977f27f798b91b54b01",
+          "review/inputs/cloud_rgb.png": "1c4989701cdb8e8c06618274c1a4e9fd08e86385286faf0b8fff5f91f08b7ea7",
+          "review/inputs/filter_removed.png": "496eb3864f507f924b1d46c7cd8ed515869d5da135b27e18c65b296ce8aee846",
+          "review/inputs/cloud_by_view.png": "8c18438dc6bd812c80b2dbdcec7bf5e46de89befc9eab081656bc02a24614468",
+          "review/inputs/view_2_17736741.png": "75ad3a3afc5886ca1404e6e8d7f305991d847c1fb281e43ec7f5dbb7bfcfb0b2",
+          "review/rerun/headless_contact_sheet.png": "1e3fc08b2425c157cee4d2be0e08943cb6aeca33c0f9df9b2c4493fabf3bd80c",
+          "review/spline/centerline_0_with_masks.png": "6113bf8fc1ebe2019728d0b3808c652eff3ced4a014cb914a34c34469f778096",
+          "review/spline/centerline_3_unmasked.png": "afad46873540863c3471da1ed5cc20ddb0e798d10a0abadf7b3108291b4f44c6",
+          "review/spline/per_view_arc_coverage.png": "7d0b2fa4e959211a9d13d746b8cc6a269957697b02630a90bdd44b017e80a7a2",
+          "review/spline/fit_projections.png": "6bf290bef7b2bc2d63f758952dbd230658696ad8c8e7aa89b9a8f7df6da390f3",
+          "review/spline/centerline_1_unmasked.png": "7b2c1a20de9f6c2fb99b844912154b1c9982be71e0149dc0ac9ea79787f130bc",
+          "review/spline/centerline_2_with_masks.png": "4c36df7b75c2a3cf925cad2cf7cd8dca0f73170e6c667de226ab2f465a1e762b",
+          "review/spline/centerline_1_with_masks.png": "be181c5a976cff2cf85f57fdf5ed0e5642dd590051069fb7efb3557297aa69b0",
+          "review/spline/centerline_2_unmasked.png": "c649d3ba505f96e30ed6caab184de864b52b1a0bed4b71b05fa8e15c8490ce6d",
+          "review/spline/round_curves.png": "2bd8708d113e876c4d1d1a4d72f28f45fc85e8d90165bac3884688431c3696bc",
+          "review/spline/curvature_profile.png": "2c4684b4106baea72485f857b3a91710254c7a775fb5611ef065edfa9d43f336",
+          "review/spline/residual_histograms.png": "11a855830f5498ac8ce88c863bb8e954003ae1c5801dab1d22199b37e42cc1a0",
+          "review/spline/centerline_3_with_masks.png": "ebe66a015b9d58fe706755cc70eb5e575899d1dcbff5c650c103b3d2e790fba4",
+          "review/spline/fit_3d.png": "502f6cd776b7a0948613e52f70852879ad4b70b8a4cb843cac7e0f0b3570dad9",
+          "review/spline/centerline_0_unmasked.png": "f868d0fc1d19d887a3ea09670724eac1dc464e6ab6e66a75a34033d418ebddd6",
+          "review/colors/fill_swatch.txt": "18f109978b844d44be2f594090e93ad293b424b3d07677a63fec5e24dcdd10d7",
+          "review/colors/view_2_visibility.png": "ade09515a11ac5bda11042c7b406abaa47875e7f101b087bcbd344deb14bd79d",
+          "review/colors/view_1_visibility.png": "f2c34323bd6d70e279f450c3598c1fddbb6926f8dbd43550b5ac738bddd4a31e",
+          "review/colors/visibility_and_fill.png": "d7c8b04707b373af807b1602737d74894baf4a86ec6979992009109808fd9ac8",
+          "review/colors/view_0_visibility.png": "a99e4da277d6844e04d9fd6b245e47331a7fb4801057f37abfc1d81181c43ca6",
+          "review/colors/fill_swatch.png": "68b3c61ed4fe1858150036e1c29a15b560cc6485de6cc3ac508e1014d5d15a99",
+          "review/colors/view_3_visibility.png": "e4c089b478d342fe0678aac91296322381f6473bb876f194d7f7c2348c169b21",
+          "review/ribbon/silhouette_1_unmasked.png": "a82c6bec1dbeb9e3572819799509805cae826001cdbeb89873367752508ac5d3",
+          "review/ribbon/silhouette_0_unmasked.png": "2659f0a55cc96a7a768ba4ad9a1513dfafc2169fe008d219e056896278060d71",
+          "review/ribbon/twist_and_width_direction.png": "676ca4e93756fdc73a331950ab1818daf4b5421c371548b44c1b6b7c65da73ae",
+          "review/ribbon/ribbon_profiles.png": "3490b76d86b2637d91257e6b25c9524a92f04e8cf2613816807e75421e91682c",
+          "review/ribbon/ribbon_scale_views.png": "4feadf2969781735769ec8c5ec7fe4f2da1b4e199b121717de68b7caf256d6d9",
+          "review/ribbon/silhouette_0_with_masks.png": "23da1f8897065a7e76c2525d64814eb4e757b8ac326689470301eb0c958faf73",
+          "review/ribbon/silhouette_1_with_masks.png": "96e87d75f9feebea94e22711f23421e98453f79c787e041085b27078acbf97e6",
+          "review/ribbon/silhouette_2_unmasked.png": "87faaa35ddc4ae956001c949e830a7b02107ed44429c3c61844522bc744f51d1",
+          "review/ribbon/silhouette_3_with_masks.png": "7f896c83c86fa0d882e174b632b6935333a3ed1bb6c5b1bed0ae4ff5fd76f351",
+          "review/ribbon/silhouette_2_with_masks.png": "46f0e039fedfda8f379cdc6f294c314c6ee846aec95f6b92c3d8d7b775a58a1e",
+          "review/ribbon/check_table.json": "596b5eeaf091bbae4be857ddc5b120cd41b5377b72e27b46143e92f01f781a79",
+          "review/ribbon/orbit.mp4": "35e19903ebb883b9eb9b9b1d9c86fd980ffd6dadeac69208a4a5c8bfb0b7d63a",
+          "review/ribbon/silhouette_3_unmasked.png": "b6d333d00ae5a06a499bc2fee1583edd43873e3151e82a690a90c869aa9d76a7",
+          "rerun/appearance_spline_prior.rrd": "31a97d4c8afec373356866656ec5ebc6fcb5f992f13f78736e3b430edf8e4ae2"
+        }
+      },
+      "code": {
+        "commit": "5e1b4258a3efb3620c533a4073a37212d8bf9ee5",
+        "u_pin": "81c718790a37e5e0102eb77af2c6edd34a9db25f"
+      },
+      "wall_time_s": 14.954077243804932
+    },
+    "ribbon": {
+      "status": "ok",
+      "settings": {
+        "width_m": 0.02500000037252903,
+        "step_t": 0.1,
+        "u_resolution": 5,
+        "interior": "none (owner surface-only route)"
+      },
+      "outputs": {
+        "checks": {
+          "representation": "zero-thickness intrinsic ribbon surface (open width edges)",
+          "euler_characteristic": 0,
+          "watertight": false,
+          "components": 1,
+          "winding_consistent": true,
+          "boundary_loop_edges": [
+            90,
+            90
+          ],
+          "degenerate_triangles": 0,
+          "open3d_reported_intersecting_pairs": 0,
+          "confirmed_intersecting_pairs": [],
+          "self_intersecting": false,
+          "maximum_width_error_m": 4.168095670692429e-09,
+          "maximum_midline_error_m": 7.458761557769658e-09,
+          "maximum_tangent_width_dot": 6.293928615924704e-07,
+          "seam_surface_error_m": 0.0,
+          "minimum_nonadjacent_centerline_distance_m": 0.012840398764932582,
+          "theta_min_max_rad": [
+            -0.16286520659923553,
+            0.20566576719284058
+          ],
+          "width_direction_abs_z_mean": 0.9866337789138248,
+          "triangle_area_m2": {
+            "min": 1.9866416790935413e-05,
+            "median": 2.308859880980939e-05,
+            "mean": 2.309373435003683e-05,
+            "max": 2.6364587466663173e-05,
+            "density_max_over_min": 1.327093242033094
+          },
+          "bounds_m": [
+            [
+              -0.09121353924274445,
+              -0.2570227384567261,
+              -0.005563093814998865
+            ],
+            [
+              0.11510050296783447,
+              -0.035165052860975266,
+              0.024887273088097572
+            ]
+          ],
+          "width_m": 0.02500000037252903,
+          "step_t": 0.1,
+          "u_resolution": 5,
+          "passed": true
+        },
+        "vertex_count": 450,
+        "triangle_count": 720,
+        "files": {
+          "ribbon/triangle_areas.npz": "28d849ddc54fdcc8a5a618f49b48b8d0f2a841d0bee3006a43df4a41b422a793",
+          "ribbon/geometry.npz": "f2743fe189a5a32bfbf9731983dad381b53c6fcc06ad045dfe4523ae543e6f32",
+          "ribbon/ribbon_checks.json": "596b5eeaf091bbae4be857ddc5b120cd41b5377b72e27b46143e92f01f781a79"
+        }
+      },
+      "code": {
+        "commit": "5e1b4258a3efb3620c533a4073a37212d8bf9ee5",
+        "u_pin": "81c718790a37e5e0102eb77af2c6edd34a9db25f"
+      },
+      "wall_time_s": 3.405883550643921
+    }
+  },
+  "files": {
+    "colors/color_summary.json": "68edc9ac2d34e8343362f0bab9a37a0120b64c128c6b35cc4fe95a5269ab61d7",
+    "colors/vertex_colors.npz": "e326dc6cfb203b81cd5dd564704736f77dd3341d714e2cfab9e3f3407dcb16c9",
+    "gaussian_data/session_20260921_232344_289067/0.png": "2f224039efb1b63a478c816344faafbe189202504687afca97e30fd84a42f119",
+    "gaussian_data/session_20260921_232344_289067/0_depth.npy": "db38aaed366244de4b775c2b49d41645c6c96e643bc267006c03af758b414fee",
+    "gaussian_data/session_20260921_232344_289067/1.png": "22f1ed096054714ecec893f03c5c369c5b67fa4145aa7c96ad686e788a037c5e",
+    "gaussian_data/session_20260921_232344_289067/1_depth.npy": "6f368dbc2a8d3a4abfbb728d0620db9e344dbbfb5cefcebbe2793fb42fbb95f2",
+    "gaussian_data/session_20260921_232344_289067/2.png": "dd38a07c133f74df8098b2a92f5f1b224b5f7b8df19618cc77d9defd5aefbe83",
+    "gaussian_data/session_20260921_232344_289067/2_depth.npy": "369d806583d7c1749e0a672662dd3cfb9a7488fba1233bfffd1c25655deebb49",
+    "gaussian_data/session_20260921_232344_289067/3.png": "57825e091f058ead76b3d07da1abe23eed172e60d6b31b47980cbb20092bc757",
+    "gaussian_data/session_20260921_232344_289067/3_depth.npy": "244abb48cd6f8ff24a334debe386803b6cabafaaaa3e10797cd2bd9f896f3e18",
+    "gaussian_data/session_20260921_232344_289067/camera_meta.pkl": "857b8d34ddf7bdbf11cc9f299b17f71c92e2dd134c3c82f6b5d85418668baa52",
+    "gaussian_data/session_20260921_232344_289067/interp_poses.pkl": "b90cc26123c822f0d06446ac699e110db22a86e265c56751819029a46f558b6f",
+    "gaussian_data/session_20260921_232344_289067/mask_0.png": "f9061c84385e52b981496b79122f0cdb5881e16426af2b2e5198392989419ee6",
+    "gaussian_data/session_20260921_232344_289067/mask_1.png": "9bd51b8d5e01be8011c831610b060a4226bc476ab150a9f10f15a1ea46f4bbf6",
+    "gaussian_data/session_20260921_232344_289067/mask_2.png": "a62e0cab61ca6facbda05baa24551b3be06cf85fcac6dc1cef13b7793dd46043",
+    "gaussian_data/session_20260921_232344_289067/mask_3.png": "2f1f0e12bb5c1e3e920a2e6bf5fea75a97c12334f5f621cbe3cc86c753aff82f",
+    "gaussian_data/session_20260921_232344_289067/mask_human_0.png": "0cbd9c2b1aa4bb7bf6e14251b12a620af4a25ca913392efc07a007da86a88325",
+    "gaussian_data/session_20260921_232344_289067/mask_human_1.png": "56d054bc576723563efb2c3d15199e5a317f3da3b692c184d7b1b7d43d324d46",
+    "gaussian_data/session_20260921_232344_289067/mask_human_2.png": "421ab278d155eac8fd86aa5c568d15157c041bb011b6fecb110ef7667d4a2e08",
+    "gaussian_data/session_20260921_232344_289067/mask_human_3.png": "0fe05526b59a8f7c1f20385372b37b938ffe6be20181e29b6751edd6d49fc7ec",
+    "gaussian_data/session_20260921_232344_289067/observation.ply": "9537f54102aac6cd195dde3186fd7045fd292bb285af16f191425a5550b97b73",
+    "gaussian_data/session_20260921_232344_289067/shape_prior.glb": "a2a9728d596afe59e4da785c0d1c60c54cbefc7b19c69fff2582496a7357ba15",
+    "hybrid/populations.npz": "9086802738c5ea3b05a5f56ad622e5775657e6b88163542d1acd0642a6a24e66",
+    "inputs/depth_offset_diagnostic.json": "4d853c031e598c5ea500e6e3c03db86fbf6ca8e5838db04dd579d7fd8b1ee8f5",
+    "inputs/observed_cloud.npz": "5014bfae89dcda44d691cd0e0a1ddc2b703d7bef3e88df832b7e8330c1159966",
+    "inputs/reference_views.json": "d47af069f367a03e3adfe3414f0b77358eca9852c46d68f1f1e460eff2820858",
+    "rerun/appearance_spline_prior.rrd": "31a97d4c8afec373356866656ec5ebc6fcb5f992f13f78736e3b430edf8e4ae2",
+    "review/colors/fill_swatch.png": "68b3c61ed4fe1858150036e1c29a15b560cc6485de6cc3ac508e1014d5d15a99",
+    "review/colors/fill_swatch.txt": "18f109978b844d44be2f594090e93ad293b424b3d07677a63fec5e24dcdd10d7",
+    "review/colors/view_0_visibility.png": "a99e4da277d6844e04d9fd6b245e47331a7fb4801057f37abfc1d81181c43ca6",
+    "review/colors/view_1_visibility.png": "f2c34323bd6d70e279f450c3598c1fddbb6926f8dbd43550b5ac738bddd4a31e",
+    "review/colors/view_2_visibility.png": "ade09515a11ac5bda11042c7b406abaa47875e7f101b087bcbd344deb14bd79d",
+    "review/colors/view_3_visibility.png": "e4c089b478d342fe0678aac91296322381f6473bb876f194d7f7c2348c169b21",
+    "review/colors/visibility_and_fill.png": "d7c8b04707b373af807b1602737d74894baf4a86ec6979992009109808fd9ac8",
+    "review/hybrid/combined.png": "95b266a59c3f3582fff94445b4d074159dea173723e2a3b7e1b6b48f2a7d90bc",
+    "review/hybrid/mesh.png": "91e3ca6ea717a7cd79b72a7a19f8610b215b5c5d445e807a61277bed8195ca1e",
+    "review/hybrid/observed.png": "ad86cdba1844175da2713b06e8f4d04b4f370f2704e0fee0d5bce11d239d080e",
+    "review/inputs/cloud_by_view.png": "8c18438dc6bd812c80b2dbdcec7bf5e46de89befc9eab081656bc02a24614468",
+    "review/inputs/cloud_rgb.png": "1c4989701cdb8e8c06618274c1a4e9fd08e86385286faf0b8fff5f91f08b7ea7",
+    "review/inputs/depth_offset.png": "f4073f0ca6e56b0ed51b4c4234d2ceb9760ed73acb9b1fff36dd3d3b1d5a30fa",
+    "review/inputs/depth_offset_table.json": "4d853c031e598c5ea500e6e3c03db86fbf6ca8e5838db04dd579d7fd8b1ee8f5",
+    "review/inputs/filter_removed.png": "496eb3864f507f924b1d46c7cd8ed515869d5da135b27e18c65b296ce8aee846",
+    "review/inputs/view_0_12540311.png": "95791bcb85333b360d9e93c259d49a5d4013634b44acae07466443dc3390b880",
+    "review/inputs/view_1_12933256.png": "4c1e3a30862039bf1eb36a321f68e14a47d3a9996c390977f27f798b91b54b01",
+    "review/inputs/view_2_17736741.png": "75ad3a3afc5886ca1404e6e8d7f305991d847c1fb281e43ec7f5dbb7bfcfb0b2",
+    "review/inputs/view_3_23007103.png": "ab0e1bef372d256efdbfff2cff65c2ec1b905b4d7bffcfad9e05ebe11772c66b",
+    "review/rerun/headless_contact_sheet.png": "1e3fc08b2425c157cee4d2be0e08943cb6aeca33c0f9df9b2c4493fabf3bd80c",
+    "review/ribbon/check_table.json": "596b5eeaf091bbae4be857ddc5b120cd41b5377b72e27b46143e92f01f781a79",
+    "review/ribbon/orbit.mp4": "35e19903ebb883b9eb9b9b1d9c86fd980ffd6dadeac69208a4a5c8bfb0b7d63a",
+    "review/ribbon/ribbon_profiles.png": "3490b76d86b2637d91257e6b25c9524a92f04e8cf2613816807e75421e91682c",
+    "review/ribbon/ribbon_scale_views.png": "4feadf2969781735769ec8c5ec7fe4f2da1b4e199b121717de68b7caf256d6d9",
+    "review/ribbon/silhouette_0_unmasked.png": "2659f0a55cc96a7a768ba4ad9a1513dfafc2169fe008d219e056896278060d71",
+    "review/ribbon/silhouette_0_with_masks.png": "23da1f8897065a7e76c2525d64814eb4e757b8ac326689470301eb0c958faf73",
+    "review/ribbon/silhouette_1_unmasked.png": "a82c6bec1dbeb9e3572819799509805cae826001cdbeb89873367752508ac5d3",
+    "review/ribbon/silhouette_1_with_masks.png": "96e87d75f9feebea94e22711f23421e98453f79c787e041085b27078acbf97e6",
+    "review/ribbon/silhouette_2_unmasked.png": "87faaa35ddc4ae956001c949e830a7b02107ed44429c3c61844522bc744f51d1",
+    "review/ribbon/silhouette_2_with_masks.png": "46f0e039fedfda8f379cdc6f294c314c6ee846aec95f6b92c3d8d7b775a58a1e",
+    "review/ribbon/silhouette_3_unmasked.png": "b6d333d00ae5a06a499bc2fee1583edd43873e3151e82a690a90c869aa9d76a7",
+    "review/ribbon/silhouette_3_with_masks.png": "7f896c83c86fa0d882e174b632b6935333a3ed1bb6c5b1bed0ae4ff5fd76f351",
+    "review/ribbon/twist_and_width_direction.png": "676ca4e93756fdc73a331950ab1818daf4b5421c371548b44c1b6b7c65da73ae",
+    "review/spline/centerline_0_unmasked.png": "f868d0fc1d19d887a3ea09670724eac1dc464e6ab6e66a75a34033d418ebddd6",
+    "review/spline/centerline_0_with_masks.png": "6113bf8fc1ebe2019728d0b3808c652eff3ced4a014cb914a34c34469f778096",
+    "review/spline/centerline_1_unmasked.png": "7b2c1a20de9f6c2fb99b844912154b1c9982be71e0149dc0ac9ea79787f130bc",
+    "review/spline/centerline_1_with_masks.png": "be181c5a976cff2cf85f57fdf5ed0e5642dd590051069fb7efb3557297aa69b0",
+    "review/spline/centerline_2_unmasked.png": "c649d3ba505f96e30ed6caab184de864b52b1a0bed4b71b05fa8e15c8490ce6d",
+    "review/spline/centerline_2_with_masks.png": "4c36df7b75c2a3cf925cad2cf7cd8dca0f73170e6c667de226ab2f465a1e762b",
+    "review/spline/centerline_3_unmasked.png": "afad46873540863c3471da1ed5cc20ddb0e798d10a0abadf7b3108291b4f44c6",
+    "review/spline/centerline_3_with_masks.png": "ebe66a015b9d58fe706755cc70eb5e575899d1dcbff5c650c103b3d2e790fba4",
+    "review/spline/curvature_profile.png": "2c4684b4106baea72485f857b3a91710254c7a775fb5611ef065edfa9d43f336",
+    "review/spline/fit_3d.png": "502f6cd776b7a0948613e52f70852879ad4b70b8a4cb843cac7e0f0b3570dad9",
+    "review/spline/fit_projections.png": "6bf290bef7b2bc2d63f758952dbd230658696ad8c8e7aa89b9a8f7df6da390f3",
+    "review/spline/per_view_arc_coverage.png": "7d0b2fa4e959211a9d13d746b8cc6a269957697b02630a90bdd44b017e80a7a2",
+    "review/spline/residual_histograms.png": "11a855830f5498ac8ce88c863bb8e954003ae1c5801dab1d22199b37e42cc1a0",
+    "review/spline/round_curves.png": "2bd8708d113e876c4d1d1a4d72f28f45fc85e8d90165bac3884688431c3696bc",
+    "ribbon/geometry.npz": "f2743fe189a5a32bfbf9731983dad381b53c6fcc06ad045dfe4523ae543e6f32",
+    "ribbon/ribbon.ply": "3ada8d9161bcd2d6b92489e46af8701d1547a96588537117bfa948a8bf9f015a",
+    "ribbon/ribbon_checks.json": "596b5eeaf091bbae4be857ddc5b120cd41b5377b72e27b46143e92f01f781a79",
+    "ribbon/shape_prior.glb": "a2a9728d596afe59e4da785c0d1c60c54cbefc7b19c69fff2582496a7357ba15",
+    "ribbon/triangle_areas.npz": "28d849ddc54fdcc8a5a618f49b48b8d0f2a841d0bee3006a43df4a41b422a793",
+    "spline/determinism.json": "b238707bd37cab1390a5e728787545bdbd08f2a945cbcb9d6f997fcb7379b757",
+    "spline/filter.json": "cd1f44ca92cc1e2a6e34848c26007ce1a6acdec346732623bd15558066cbbdb4",
+    "spline/filter_removed.npz": "447275bb98185cb5f01ad2c7e11ab8a4ea91cc889060af4942c6fd00b231902e",
+    "spline/filtered_cloud.npz": "d3e44988061dbdb7bac2b7eea6fa8ddf63b7506440b7939ace457825c319582b",
+    "spline/init_ellipse.json": "907518c19c34277b98f0f52ab30cc8c729f599c4bfdc977c90966c7b183c53c0",
+    "spline/reprojection.json": "a7e01a54204132331b126ce358baf7d1535667aaec7605b8101dbed951e98273",
+    "spline/reprojection_residuals.npz": "78ecdf1af1189809bdb6e3500b85cfad6eebf97171f0b22a00436033ab67e34f",
+    "spline/residuals.npz": "75db82610eb48e3a853ec71729942ce7aedacdadd36e234b78415a7d6210fcf4",
+    "spline/rounds.jsonl": "2695a124b9f56d7a29c3eb8ff0581a4c0487adfc284469f5274b04b24cfb169e",
+    "spline/spline_fit.json": "4e7bd3210208be2795e4f2b119870f7c0df56d239da01fb0518fdd02519c19ce",
+    "spline/spline_init.json": "b444ee06ad87c4ef3cc99752e7ee5924291ac19e67d8ff8c2acbc781f3880b41",
+    "spline/spline_stage1.json": "8e65a22a14060f1a0dfd2a7e5a3093115f425b53841c567715f9deff86d037a0",
+    "spline/twist_trajectory.jsonl": "6834f966d03abe7e83dc30ae8f44a80cbb70faf242164520e5adb464d3f4e2a7",
+    "spline/witness.json": "e80376660858f99ef7b92753bc7ee6ca8a27701d144dc446a2d910197fb4abc5",
+    "steps/colors.json": "a03793d96a8818c88f85c6a5e20075656146399cebac4565f590719ac716071b",
+    "steps/diagnose-depth.json": "111835080b09a787ee2457757bdccebe110edacc9fe45b08cf94c7b2b6db17df",
+    "steps/fit.json": "d790d0592f933682e47ad787d86a090a2fed85be0700c9a607094fadeb6881ad",
+    "steps/hybrid.json": "6fb7aa9f51433bcc7dfea0cf8657748c5d173196d57e36f136ede817bcb0624d",
+    "steps/inputs.json": "fa4d2c1609074c4a6161db1f5a18abe890e3043d78e4e8f423bfd42c0281e4d1",
+    "steps/review.json": "9f269c5275da9433ce986a99929cbd5dd76b4f5c657dac1bcf02269589aacda6",
+    "steps/ribbon.json": "e1a4f0a1eb41db2d7bd52aba1829cbe432f1e5098b71cc063fec3b27ee3e1a40"
+  }
+}

sessions/session_20260921_232344_289067/preprocessing/timing-belt-ribbon-prior-v1/native/rerun/appearance_spline_prior.rrd

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:31a97d4c8afec373356866656ec5ebc6fcb5f992f13f78736e3b430edf8e4ae2
+size 24977455

sessions/session_20260921_232344_289067/preprocessing/timing-belt-ribbon-prior-v1/native/review/colors/fill_swatch.txt

@@ -0,0 +1,2 @@
+Per-channel median of 393 observed vertex colours (RGB/255): [0.40392156862745093, 0.34509803921568627, 0.2923340622683475]
+Filled 57 vertices.

sessions/session_20260921_232344_289067/preprocessing/timing-belt-ribbon-prior-v1/native/review/ribbon/check_table.json

@@ -0,0 +1,48 @@
+{
+  "representation": "zero-thickness intrinsic ribbon surface (open width edges)",
+  "euler_characteristic": 0,
+  "watertight": false,
+  "components": 1,
+  "winding_consistent": true,
+  "boundary_loop_edges": [
+    90,
+    90
+  ],
+  "degenerate_triangles": 0,
+  "open3d_reported_intersecting_pairs": 0,
+  "confirmed_intersecting_pairs": [],
+  "self_intersecting": false,
+  "maximum_width_error_m": 4.168095670692429e-09,
+  "maximum_midline_error_m": 7.458761557769658e-09,
+  "maximum_tangent_width_dot": 6.293928615924704e-07,
+  "seam_surface_error_m": 0.0,
+  "minimum_nonadjacent_centerline_distance_m": 0.012840398764932582,
+  "theta_min_max_rad": [
+    -0.16286520659923553,
+    0.20566576719284058
+  ],
+  "width_direction_abs_z_mean": 0.9866337789138248,
+  "triangle_area_m2": {
+    "min": 1.9866416790935413e-05,
+    "median": 2.308859880980939e-05,
+    "mean": 2.309373435003683e-05,
+    "max": 2.6364587466663173e-05,
+    "density_max_over_min": 1.327093242033094
+  },
+  "bounds_m": [
+    [
+      -0.09121353924274445,
+      -0.2570227384567261,
+      -0.005563093814998865
+    ],
+    [
+      0.11510050296783447,
+      -0.035165052860975266,
+      0.024887273088097572
+    ]
+  ],
+  "width_m": 0.02500000037252903,
+  "step_t": 0.1,
+  "u_resolution": 5,
+  "passed": true
+}

sessions/session_20260921_232344_289067/preprocessing/timing-belt-ribbon-prior-v1/native/review/ribbon/orbit.mp4

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:35e19903ebb883b9eb9b9b1d9c86fd980ffd6dadeac69208a4a5c8bfb0b7d63a
+size 1034195