kernel-cases: threads cases from #1995 and #3368 (finely faceted booleans), skipped #987 #3130 #3824

An M8x1 thread in a 7 mm hole, and three booleans of finely faceted
prisms (1000 and 1200 flat faces) with planar and curved partners, each
with a closed-form volume. Three auto-reports without geometry are
listed in skipped.json.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tests/kernel-cases/threads/1995-m8x1-thread-in-7mm-hole/expected.json

@@ -0,0 +1,31 @@
+{
+ "sources": [
+  "tangency-labs/solidcraft#1995"
+ ],
+ "what": "an M8x1 modelled thread in a 7 mm hole through a block (the report: the thread also changed the block's outer surface and made too many faces)",
+ "source": "analytic",
+ "method": "ISO 68-1 basic profile: H = P sqrt3/2, basic depth 5H/8. Internal groove: P/8 wide at the major radius d/2, widening by 2 tan30 per unit of radius toward the axis (3P/4 at the minor radius d/2 - 5H/8 = 3.4587), cut only where there is material (r >= hole radius 3.5). Volume per turn = 2 pi * integral from 3.5 to 4 of (P/8 + 2 tan30 (4 - r)) r dr = 4.79792 mm3 for P=1. Block 20x20x10 with a 7 mm through hole (rho=3.5), M8x1 over the full 10 mm (10 turns, both ends free): V = 4000 - pi 3.5^2 10 - 10 x 4.79792 = 3567.1757 mm3. The outer surface is untouched: the bbox stays the block's 20x20x10 and COM stays on the axis at z=5. Tolerance 1%: a modelled thread is a faceted helical solid (radial chord error up to 1% of the pitch on every wall).",
+ "outcome": "solid",
+ "body_count": 1,
+ "volume_mm3": 3567.1757,
+ "center_of_mass": [
+  0,
+  0,
+  5.0
+ ],
+ "tolerance": {
+  "rel": 0.01
+ },
+ "bbox": {
+  "min": [
+   -10,
+   -10,
+   0
+  ],
+  "max": [
+   10,
+   10,
+   10
+  ]
+ }
+}

tests/kernel-cases/threads/1995-m8x1-thread-in-7mm-hole/recipe.json

@@ -0,0 +1,41 @@
+{
+ "commands": [
+  {
+   "command": "solid.box",
+   "params": {
+    "corner": [
+     -10,
+     -10,
+     0
+    ],
+    "length": 20,
+    "width": 20,
+    "height": 10,
+    "body_name": "Block"
+   }
+  },
+  {
+   "command": "solid.hole",
+   "params": {
+    "position": [
+     0,
+     0,
+     10
+    ],
+    "diameter": 7
+   }
+  },
+  {
+   "command": "solid.thread",
+   "params": {
+    "face": [
+     3.5,
+     0,
+     5.0
+    ],
+    "designation": "M8x1",
+    "modeled": true
+   }
+  }
+ ]
+}

tests/kernel-cases/threads/3368-faceted-prism-pocket-cut-and-boss-join/expected.json

@@ -0,0 +1,23 @@
+{
+ "sources": [
+  "tangency-labs/solidcraft#3368"
+ ],
+ "what": "booleans of a finely faceted body (a 1200-sided prism, 1202 flat faces, the kind of body a modelled thread leaves) with box tools: they must finish in bounded time with the exact result, not run for minutes",
+ "source": "analytic",
+ "method": "A regular N-gon of circumradius R (one vertex on +x) has area N/2 R^2 sin(2 pi/N). Plate: 1200-gon R=30, h=10: V0 = 600 * 900 * sin(0.3 deg) * 10 = 28274.2047. Cut: a 10x10 square pocket through the full thickness, entirely inside the plate: -10*10*10 = -1000. Join: a 12x12x5 box standing on the top face (z 10 to 15, x and y 8 to 20, inside the outline, touching the top face only in its base): +720. V = 27994.2047 mm3.",
+ "outcome": "solid",
+ "body_count": 1,
+ "volume_mm3": 27994.2047,
+ "bbox": {
+  "min": [
+   -30,
+   -30,
+   0
+  ],
+  "max": [
+   30,
+   30,
+   15
+  ]
+ }
+}

tests/kernel-cases/threads/3368-faceted-prism-pocket-cut-and-boss-join/recipe.json

@@ -0,0 +1 @@
+{"commands":[{"command":"sketch.create","params":{"plane":{"origin":[0,0,0.0],"x_dir":[1,0,0],"y_dir":[0,1,0]}}},{"command":"sketch.line","params":{"points":[[30.0,0.0],[29.999588767,0.157078915],[29.998355081,0.314153523],[29.996298974,0.471219519],[29.993420504,0.628272597],[29.989719749,0.785308449],[29.985196811,0.942322772],[29.979851813,1.099311261],[29.973684903,1.256269612],[29.966696249,1.413193521],[29.958886043,1.570078687],[29.950254498,1.726920809],[29.940801853,1.883715586],[29.930528365,2.04045872],[29.919434317,2.197145914],[29.907520012,2.353772872],[29.894785777,2.5103353],[29.881231962,2.666828906],[29.866858938,2.8232494],[29.851667099,2.979592492],[29.835656861,3.135853898],[29.818828664,3.292029333],[29.801182968,3.448114515],[29.782720258,3.604105165],[29.763441039,3.759997007],[29.743345841,3.915785767],[29.722435214,4.071467173],[29.700709731,4.227036958],[29.678169989,4.382490857],[29.654816604,4.537824607],[29.630650218,4.693033951],[29.605671492,4.848114633],[29.579881112,5.003062401],[29.553279785,5.157873008],[29.525868239,5.31254221],[29.497647227,5.467065765],[29.468617522,5.621439438],[29.43877992,5.775658996],[29.408135239,5.929720211],[29.376684319,6.083618861],[29.344428022,6.237350725],[29.311367233,6.390911588],[29.277502858,6.544297242],[29.242835826,6.69750348],[29.207367086,6.850526103],[29.171097612,7.003360916],[29.134028397,7.156003727],[29.096160459,7.308450354],[29.057494834,7.460696615],[29.018032583,7.612738338],[28.977774789,7.764571353],[28.936722554,7.916191499],[28.894877004,8.067594618],[28.852239286,8.218776561],[28.80881057,8.369733181],[28.764592046,8.520460341],[28.719584926,8.670953908],[28.673790444,8.821209757],[28.627209855,8.971223768],[28.579844438,9.120991828],[28.531695489,9.270509831],[28.482764329,9.419773679],[28.4330523,9.568779279],[28.382560765,9.717522546],[28.331291107,9.865999402],[28.279244733,10.014205777],[28.226423069,10.162137607],[28.172827563,10.309790838],[28.118459685,10.45716142],[28.063320925,10.604245313],[28.007412795,10.751038486],[27.950736828,10.897536914],[27.893294577,11.043736581],[27.835087617,11.189633477],[27.776117544,11.335223605],[27.716385975,11.480502971],[27.655894548,11.625467594],[27.59464492,11.770113498],[27.532638771,11.914436719],[27.4698778,12.0584333],[27.406363729,12.202099292],[27.342098299,12.345430758],[27.277083271,12.488423768],[27.211320429,12.631074401],[27.144811574,12.773378747],[27.07755853,12.915332904],[27.009563142,13.056932981],[26.940827273,13.198175096],[26.871352807,13.339055376],[26.80114165,13.479569958],[26.730195726,13.619714992],[26.65851698,13.759486635],[26.586107377,13.898881054],[26.512968903,14.037894428],[26.439103562,14.176522946],[26.36451338,14.314762808],[26.289200401,14.452610223],[26.213166691,14.590061413],[26.136414334,14.727112608],[26.058945433,14.863760053],[25.980762114,15.0],[25.901866518,15.135828714],[25.82226081,15.271242473],[25.741947172,15.406237562],[25.660927805,15.540810281],[25.579204931,15.674956941],[25.49678079,15.808673865],[25.413657641,15.941957386],[25.329837765,16.074803849],[25.245323458,16.207209614],[25.160117038,16.33917105],[25.074220841,16.47068454],[24.987637221,16.601746477],[24.900368553,16.732353269],[24.812417228,16.862501336],[24.723785659,16.992187108],[24.634476274,17.121407031],[24.544491523,17.250157561],[24.453833872,17.37843517],[24.362505807,17.506236341],[24.270509831,17.633557569],[24.177848467,17.760395364],[24.084524256,17.886746249],[23.990539755,18.01260676],[23.895897541,18.137973446],[23.800600209,18.26284287],[23.704650371,18.38721161],[23.608050659,18.511076254],[23.51080372,18.634433408],[23.41291222,18.75727969],[23.314378844,18.879611731],[23.215206292,19.001426179],[23.115397283,19.122719692],[23.014954554,19.243488947],[22.913880859,19.363730632],[22.812178968,19.48344145],[22.70985167,19.60261812],[22.606901769,19.721257374],[22.503332089,19.83935596],[22.399145469,19.95691064],[22.294344764,20.073918191],[22.188932849,20.190375405],[22.082912614,20.30627909],[21.976286964,20.421626069],[21.869058823,20.536413178],[21.76123113,20.650637271],[21.652806843,20.764295216],[21.543788933,20.877383898],[21.434180389,20.989900215],[21.323984216,21.101841084],[21.213203436,21.213203436],[21.101841084,21.323984216],[20.989900215,21.434180389],[20.877383898,21.543788933],[20.764295216,21.652806843],[20.650637271,21.76123113],[20.536413178,21.869058823],[20.421626069,21.976286964],[20.30627909,22.082912614],[20.190375405,22.188932849],[20.073918191,22.294344764],[19.95691064,22.399145469],[19.83935596,22.503332089],[19.721257374,22.606901769],[19.60261812,22.70985167],[19.48344145,22.812178968],[19.363730632,22.913880859],[19.243488947,23.014954554],[19.122719692,23.115397283],[19.001426179,23.215206292],[18.879611731,23.314378844],[18.75727969,23.41291222],[18.634433408,23.51080372],[18.511076254,23.608050659],[18.38721161,23.704650371],[18.26284287,23.800600209],[18.137973446,23.895897541],[18.01260676,23.990539755Line truncated

tests/kernel-cases/threads/3368-faceted-prism-with-bore-and-cross-hole/expected.json

@@ -0,0 +1,23 @@
+{
+ "sources": [
+  "tangency-labs/solidcraft#3368"
+ ],
+ "what": "a finely faceted body (a 1200-sided prism) with a curved partner: a vertical bore and a horizontal cross hole drilled through it (the case where the B-rep ladder is bounded but must still decide)",
+ "source": "analytic",
+ "method": "A regular N-gon of circumradius R (one vertex on +x) has area N/2 R^2 sin(2 pi/N). Plate: 1200-gon R=30, h=10: V0 = 28274.2047. Vertical bore R=5 at (-15,12), through the whole thickness, inside the outline: -pi*25*10 = -785.3982. Cross hole R=3 along x at y=0, z=5 (z 2..8, inside the thickness): it spans the polygon's full chord on the x axis, which is 2R = 60 because vertices sit at angles 0 and 180 deg: -pi*9*60 = -1696.4600 (the hole is clear of the bore: bore y 7..17, hole y -3..3). V = 25792.3465 mm3.",
+ "outcome": "solid",
+ "body_count": 1,
+ "volume_mm3": 25792.3465,
+ "bbox": {
+  "min": [
+   -30,
+   -30,
+   0
+  ],
+  "max": [
+   30,
+   30,
+   10
+  ]
+ }
+}

tests/kernel-cases/threads/3368-faceted-prism-with-bore-and-cross-hole/recipe.json

@@ -0,0 +1 @@
+{"commands":[{"command":"sketch.create","params":{"plane":{"origin":[0,0,0.0],"x_dir":[1,0,0],"y_dir":[0,1,0]}}},{"command":"sketch.line","params":{"points":[[30.0,0.0],[29.999588767,0.157078915],[29.998355081,0.314153523],[29.996298974,0.471219519],[29.993420504,0.628272597],[29.989719749,0.785308449],[29.985196811,0.942322772],[29.979851813,1.099311261],[29.973684903,1.256269612],[29.966696249,1.413193521],[29.958886043,1.570078687],[29.950254498,1.726920809],[29.940801853,1.883715586],[29.930528365,2.04045872],[29.919434317,2.197145914],[29.907520012,2.353772872],[29.894785777,2.5103353],[29.881231962,2.666828906],[29.866858938,2.8232494],[29.851667099,2.979592492],[29.835656861,3.135853898],[29.818828664,3.292029333],[29.801182968,3.448114515],[29.782720258,3.604105165],[29.763441039,3.759997007],[29.743345841,3.915785767],[29.722435214,4.071467173],[29.700709731,4.227036958],[29.678169989,4.382490857],[29.654816604,4.537824607],[29.630650218,4.693033951],[29.605671492,4.848114633],[29.579881112,5.003062401],[29.553279785,5.157873008],[29.525868239,5.31254221],[29.497647227,5.467065765],[29.468617522,5.621439438],[29.43877992,5.775658996],[29.408135239,5.929720211],[29.376684319,6.083618861],[29.344428022,6.237350725],[29.311367233,6.390911588],[29.277502858,6.544297242],[29.242835826,6.69750348],[29.207367086,6.850526103],[29.171097612,7.003360916],[29.134028397,7.156003727],[29.096160459,7.308450354],[29.057494834,7.460696615],[29.018032583,7.612738338],[28.977774789,7.764571353],[28.936722554,7.916191499],[28.894877004,8.067594618],[28.852239286,8.218776561],[28.80881057,8.369733181],[28.764592046,8.520460341],[28.719584926,8.670953908],[28.673790444,8.821209757],[28.627209855,8.971223768],[28.579844438,9.120991828],[28.531695489,9.270509831],[28.482764329,9.419773679],[28.4330523,9.568779279],[28.382560765,9.717522546],[28.331291107,9.865999402],[28.279244733,10.014205777],[28.226423069,10.162137607],[28.172827563,10.309790838],[28.118459685,10.45716142],[28.063320925,10.604245313],[28.007412795,10.751038486],[27.950736828,10.897536914],[27.893294577,11.043736581],[27.835087617,11.189633477],[27.776117544,11.335223605],[27.716385975,11.480502971],[27.655894548,11.625467594],[27.59464492,11.770113498],[27.532638771,11.914436719],[27.4698778,12.0584333],[27.406363729,12.202099292],[27.342098299,12.345430758],[27.277083271,12.488423768],[27.211320429,12.631074401],[27.144811574,12.773378747],[27.07755853,12.915332904],[27.009563142,13.056932981],[26.940827273,13.198175096],[26.871352807,13.339055376],[26.80114165,13.479569958],[26.730195726,13.619714992],[26.65851698,13.759486635],[26.586107377,13.898881054],[26.512968903,14.037894428],[26.439103562,14.176522946],[26.36451338,14.314762808],[26.289200401,14.452610223],[26.213166691,14.590061413],[26.136414334,14.727112608],[26.058945433,14.863760053],[25.980762114,15.0],[25.901866518,15.135828714],[25.82226081,15.271242473],[25.741947172,15.406237562],[25.660927805,15.540810281],[25.579204931,15.674956941],[25.49678079,15.808673865],[25.413657641,15.941957386],[25.329837765,16.074803849],[25.245323458,16.207209614],[25.160117038,16.33917105],[25.074220841,16.47068454],[24.987637221,16.601746477],[24.900368553,16.732353269],[24.812417228,16.862501336],[24.723785659,16.992187108],[24.634476274,17.121407031],[24.544491523,17.250157561],[24.453833872,17.37843517],[24.362505807,17.506236341],[24.270509831,17.633557569],[24.177848467,17.760395364],[24.084524256,17.886746249],[23.990539755,18.01260676],[23.895897541,18.137973446],[23.800600209,18.26284287],[23.704650371,18.38721161],[23.608050659,18.511076254],[23.51080372,18.634433408],[23.41291222,18.75727969],[23.314378844,18.879611731],[23.215206292,19.001426179],[23.115397283,19.122719692],[23.014954554,19.243488947],[22.913880859,19.363730632],[22.812178968,19.48344145],[22.70985167,19.60261812],[22.606901769,19.721257374],[22.503332089,19.83935596],[22.399145469,19.95691064],[22.294344764,20.073918191],[22.188932849,20.190375405],[22.082912614,20.30627909],[21.976286964,20.421626069],[21.869058823,20.536413178],[21.76123113,20.650637271],[21.652806843,20.764295216],[21.543788933,20.877383898],[21.434180389,20.989900215],[21.323984216,21.101841084],[21.213203436,21.213203436],[21.101841084,21.323984216],[20.989900215,21.434180389],[20.877383898,21.543788933],[20.764295216,21.652806843],[20.650637271,21.76123113],[20.536413178,21.869058823],[20.421626069,21.976286964],[20.30627909,22.082912614],[20.190375405,22.188932849],[20.073918191,22.294344764],[19.95691064,22.399145469],[19.83935596,22.503332089],[19.721257374,22.606901769],[19.60261812,22.70985167],[19.48344145,22.812178968],[19.363730632,22.913880859],[19.243488947,23.014954554],[19.122719692,23.115397283],[19.001426179,23.215206292],[18.879611731,23.314378844],[18.75727969,23.41291222],[18.634433408,23.51080372],[18.511076254,23.608050659],[18.38721161,23.704650371],[18.26284287,23.800600209],[18.137973446,23.895897541],[18.01260676,23.990539755Line truncated

tests/kernel-cases/threads/3368-two-faceted-prisms-cut-then-joined/expected.json

@@ -0,0 +1,23 @@
+{
+ "sources": [
+  "tangency-labs/solidcraft#3368"
+ ],
+ "what": "two finely faceted bodies (1000-sided prisms, flat faces only): a faceted stud cut out of a faceted disc, then a faceted cap joined on top touching in a plane; both booleans must finish in bounded time with the exact result",
+ "source": "analytic",
+ "method": "A regular N-gon of circumradius R (one vertex on +x) has area N/2 R^2 sin(2 pi/N). Disc: 1000-gon R=30, h=10 (z 0..10). Stud: 1000-gon R=6, z -2..12, coaxial with the same vertex angles, so it removes its 10 mm inside the disc: -A6*10. Cap: 1000-gon R=20, z 10..14, touching the disc's top face in a plane and covering the hole's top (the hole stays open at the bottom, no sealed void): +A20*4. V = 500*sin(0.36 deg)*(900*10 - 36*10 + 400*4) = 32169.6971 mm3.",
+ "outcome": "solid",
+ "body_count": 1,
+ "volume_mm3": 32169.6971,
+ "bbox": {
+  "min": [
+   -30,
+   -30,
+   0
+  ],
+  "max": [
+   30,
+   30,
+   14
+  ]
+ }
+}

tests/kernel-cases/threads/3368-two-faceted-prisms-cut-then-joined/recipe.json

@@ -0,0 +1 @@
+{"commands":[{"command":"sketch.create","params":{"plane":{"origin":[0,0,0.0],"x_dir":[1,0,0],"y_dir":[0,1,0]}}},{"command":"sketch.line","params":{"points":[[30.0,0.0],[29.999407826,0.188494319],[29.997631326,0.376981197],[29.994670571,0.565453191],[29.990525678,0.753902863],[29.985196811,0.942322772],[29.978684179,1.13070548],[29.97098804,1.31904355],[29.962108698,1.507329545],[29.952046503,1.695556034],[29.940801853,1.883715586],[29.928375191,2.071800771],[29.914767008,2.259804166],[29.899977841,2.447718347],[29.884008274,2.635535897],[29.866858938,2.8232494],[29.848530509,3.010851446],[29.829023712,3.198334628],[29.808339316,3.385691546],[29.786478137,3.572914803],[29.763441039,3.759997007],[29.739228932,3.946930773],[29.713842771,4.133708721],[29.687283558,4.320323477],[29.659552342,4.506767674],[29.630650218,4.693033951],[29.600578326,4.879114956],[29.569337854,5.065003341],[29.536930036,5.250691769],[29.50335615,5.436172909],[29.468617522,5.621439438],[29.432715523,5.806484042],[29.395651572,5.991299415],[29.35742713,6.175878263],[29.318043707,6.360213298],[29.277502858,6.544297242],[29.235806184,6.728122828],[29.192955329,6.9116828],[29.148951987,7.094969911],[29.103797895,7.277976924],[29.057494834,7.460696615],[29.010044633,7.643121771],[28.961449165,7.825245189],[28.911710349,8.00705968],[28.860830148,8.188558066],[28.80881057,8.369733181],[28.755653671,8.550577874],[28.701361547,8.731085005],[28.645936342,8.911247447],[28.589380246,9.091058089],[28.531695489,9.270509831],[28.47288435,9.44959559],[28.41294915,9.628308294],[28.351892255,9.80664089],[28.289716077,9.984586336],[28.226423069,10.162137607],[28.16201573,10.339287695],[28.096496602,10.516029606],[28.029868274,10.692356361],[27.962133374,10.868261001],[27.893294577,11.043736581],[27.8233546,11.218776172],[27.752316205,11.393372866],[27.680182196,11.567519768],[27.606955421,11.741210005],[27.532638771,11.914436719],[27.457235179,12.087193071],[27.380747622,12.259472242],[27.303179121,12.43126743],[27.224532736,12.602571852],[27.144811574,12.773378747],[27.064018781,12.94368137],[26.982157547,13.113473],[26.899231104,13.282746931],[26.815242725,13.451496483],[26.730195726,13.619714992],[26.644093464,13.787395819],[26.55693934,13.954532342],[26.468736793,14.121117965],[26.379489306,14.28714611],[26.289200401,14.452610223],[26.197873644,14.617503772],[26.10551264,14.781820246],[26.012121035,14.94555316],[25.917702516,15.108696049],[25.82226081,15.271242473],[25.725799686,15.433186013],[25.628322951,15.594520279],[25.529834454,15.755238899],[25.430338083,15.915335529],[25.329837765,16.074803849],[25.228337469,16.233637564],[25.125841201,16.391830402],[25.022353008,16.549376119],[24.917876976,16.706268495],[24.812417228,16.862501336],[24.705977929,17.018068474],[24.59856328,17.172963768],[24.490177522,17.327181103],[24.380824933,17.48071439],[24.270509831,17.633557569],[24.159236571,17.785704605],[24.047009546,17.937149492],[23.933833186,18.087886251],[23.819711959,18.237908931],[23.704650371,18.38721161],[23.588652964,18.535788393],[23.471724317,18.683633415],[23.353869047,18.830740839],[23.235091806,18.977104857],[23.115397283,19.122719692],[22.994790204,19.267579595],[22.87327533,19.411678847],[22.750857459,19.555011759],[22.627541422,19.697572673],[22.503332089,19.83935596],[22.378234363,19.980356023],[22.252253182,20.120567296],[22.125393521,20.259984244],[21.997660387,20.398601362],[21.869058823,20.536413178],[21.739593906,20.673414252],[21.609270747,20.809599174],[21.478094491,20.94496257],[21.346070316,21.079499094],[21.213203436,21.213203436],[21.079499094,21.346070316],[20.94496257,21.478094491],[20.809599174,21.609270747],[20.673414252,21.739593906],[20.536413178,21.869058823],[20.398601362,21.997660387],[20.259984244,22.125393521],[20.120567296,22.252253182],[19.980356023,22.378234363],[19.83935596,22.503332089],[19.697572673,22.627541422],[19.555011759,22.750857459],[19.411678847,22.87327533],[19.267579595,22.994790204],[19.122719692,23.115397283],[18.977104857,23.235091806],[18.830740839,23.353869047],[18.683633415,23.471724317],[18.535788393,23.588652964],[18.38721161,23.704650371],[18.237908931,23.819711959],[18.087886251,23.933833186],[17.937149492,24.047009546],[17.785704605,24.159236571],[17.633557569,24.270509831],[17.48071439,24.380824933],[17.327181103,24.490177522],[17.172963768,24.59856328],[17.018068474,24.705977929],[16.862501336,24.812417228],[16.706268495,24.917876976],[16.549376119,25.022353008],[16.391830402,25.125841201],[16.233637564,25.228337469],[16.074803849,25.329837765],[15.915335529,25.430338083],[15.755238899,25.529834454],[15.594520279,25.628322951],[15.433186013,25.725799686],[15.271242473,25.82226081],[15.108696049,25.917702516],[14.94555316,26.012121035],[14.781820246,26.10551264],[14.617503772,26.197873644],[14.452610223,26.289200401],[14.28714611,26.379489306],[14.121117965,26.468736793],[13.954532342,26.55693934],[13.787395819,26.644093464],[13.619714992,26.730195726],[13.451496483,26.815242725],[Line truncated

tests/kernel-cases/threads/skipped.json

@@ -226,5 +226,17 @@
  {
   "source": "tangency-labs/solidcraft#1020",
   "why": "CPU or window threads (off-thread evaluation, freezes), not modelled threads: no geometry"
+ },
+ {
+  "source": "tangency-labs/solidcraft#987",
+  "why": "auto-report with a fillet's four edge picks and a screenshot only ('a ghost in the thread creation'): no design, no thread parameters, nothing to rebuild or compute"
+ },
+ {
+  "source": "tangency-labs/solidcraft#3130",
+  "why": "auto-report with command parameters only (an M5 drilled hole at a point the comment reads as off the part): no design; a drilled M5 hole in a block works, so there is no geometry to grade"
+ },
+ {
+  "source": "tangency-labs/solidcraft#3824",
+  "why": "auto-report with command parameters only (an M5 drilled hole from sketch point 8, failing 'no cylindrical face there to thread'): the sketch's face is not in the report, and a drilled M5 hole from a point on a flat block face works"
  }
 ]