core: cave planner holds for 16 seeds; mouth joints planned from the resolved mouth (L135, v236)

Mouth floor/profile carried into the first/last edges (fixes seeds 1 and 2); fixed a Q16/Q32 scale bug in the mouth
clearance scorer; shortest grade-safe handles; bounded cave AABBs and hoisted edge-BVH normalisation. Seeds 0-15 pass
all composed audits and negative controls; fast tier, Clang/GCC W1/W8/W12 green. Near-ready still +3.9..+13.7% vs
assembler/world (Surface World +3.9..+8.2% with no caves). Not for merge.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dhxM43dnWvUu2B5Ph1iG1

Standalone/Research/WorldAssemblerM3/Linux135/captures/COMPARE.html

@@ -0,0 +1,11 @@
+<!doctype html><meta charset="utf-8"><title>L135 interior views</title>
+<style>body{font:16px sans-serif;background:#202329;color:#eee;margin:24px}h1{font-size:22px}section{display:grid;grid-template-columns:repeat(auto-fit,minmax(420px,1fr));gap:18px}figure{margin:0}img{width:100%;height:auto;display:block}figcaption{padding:6px 0}</style>
+<h1>Planner and legacy interiors, seed 0</h1><section>
+<figure><a href="planner-arrival-room.png"><img src="planner-arrival-room.png" alt="planner-arrival-room"></a><figcaption>planner-arrival-room</figcaption></figure>
+<figure><a href="planner-tunnel.png"><img src="planner-tunnel.png" alt="planner-tunnel"></a><figcaption>planner-tunnel</figcaption></figure>
+<figure><a href="planner-compound-room.png"><img src="planner-compound-room.png" alt="planner-compound-room"></a><figcaption>planner-compound-room</figcaption></figure>
+<figure><a href="planner-destination-chamber.png"><img src="planner-destination-chamber.png" alt="planner-destination-chamber"></a><figcaption>planner-destination-chamber</figcaption></figure>
+<figure><a href="legacy-origin-room.png"><img src="legacy-origin-room.png" alt="legacy-origin-room"></a><figcaption>legacy-origin-room</figcaption></figure>
+<figure><a href="legacy-connected-room.png"><img src="legacy-connected-room.png" alt="legacy-connected-room"></a><figcaption>legacy-connected-room</figcaption></figure>
+<figure><a href="legacy-origin-tunnel.png"><img src="legacy-origin-tunnel.png" alt="legacy-origin-tunnel"></a><figcaption>legacy-origin-tunnel</figcaption></figure>
+</section>

Standalone/Research/WorldAssemblerM3/Linux135/captures/capture-index.json

@@ -0,0 +1,119 @@
+{
+  "source_stamp": "8dc4294ce0250a591ee4515471c3c547e796ffa4346ab44f0ae1740bbc3797f5",
+  "seed": 0,
+  "renderer": "readable, height tint on, headlamp off; 1600x900",
+  "views": [
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+      "mesh": "Saved/Linux/l135/capture-planner-arrival-room.vfmesh",
+      "image": "Standalone/Research/WorldAssemblerM3/Linux135/captures/planner-arrival-room.png",
+      "mesh_log": "Saved/Linux/l135/capture-planner-arrival-room-mesh.log",
+      "render_log": "Saved/Linux/l135/capture-planner-arrival-room-render.log"
+    },
+    {
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+      "recipe": "surface-world",
+      "camera_m": [
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+      "yaw_deg": 114.47628370565774,
+      "camera_height_basis": "floor + player eye offset",
+      "eye_offset_m": 1.6,
+      "mesh": "Saved/Linux/l135/capture-planner-tunnel.vfmesh",
+      "image": "Standalone/Research/WorldAssemblerM3/Linux135/captures/planner-tunnel.png",
+      "mesh_log": "Saved/Linux/l135/capture-planner-tunnel-mesh.log",
+      "render_log": "Saved/Linux/l135/capture-planner-tunnel-render.log"
+    },
+    {
+      "name": "planner-compound-room",
+      "recipe": "surface-world",
+      "camera_m": [
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+        -52.685596,
+        -785.85419
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+      "yaw_deg": -74.782578137959,
+      "camera_height_basis": "floor + player eye offset",
+      "eye_offset_m": 1.6,
+      "mesh": "Saved/Linux/l135/capture-planner-compound-room.vfmesh",
+      "image": "Standalone/Research/WorldAssemblerM3/Linux135/captures/planner-compound-room.png",
+      "mesh_log": "Saved/Linux/l135/capture-planner-compound-room-mesh.log",
+      "render_log": "Saved/Linux/l135/capture-planner-compound-room-render.log"
+    },
+    {
+      "name": "planner-destination-chamber",
+      "recipe": "surface-world",
+      "camera_m": [
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+        -4.85816,
+        -810.5142579999999
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+      "yaw_deg": -89.33032962272898,
+      "camera_height_basis": "floor + player eye offset",
+      "eye_offset_m": 1.6,
+      "mesh": "Saved/Linux/l135/capture-planner-destination-chamber.vfmesh",
+      "image": "Standalone/Research/WorldAssemblerM3/Linux135/captures/planner-destination-chamber.png",
+      "mesh_log": "Saved/Linux/l135/capture-planner-destination-chamber-mesh.log",
+      "render_log": "Saved/Linux/l135/capture-planner-destination-chamber-render.log"
+    },
+    {
+      "name": "legacy-origin-room",
+      "recipe": "legacy-tunnel-network",
+      "camera_m": [
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+        0.0,
+        -818.3169921875
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+      "yaw_deg": 82.58856646117444,
+      "camera_height_basis": "legacy room floor + player eye offset",
+      "eye_offset_m": 1.6,
+      "mesh": "Saved/Linux/l135/capture-legacy-origin-room.vfmesh",
+      "image": "Standalone/Research/WorldAssemblerM3/Linux135/captures/legacy-origin-room.png",
+      "mesh_log": "Saved/Linux/l135/capture-legacy-origin-room-mesh.log",
+      "render_log": "Saved/Linux/l135/capture-legacy-origin-room-render.log"
+    },
+    {
+      "name": "legacy-connected-room",
+      "recipe": "legacy-tunnel-network",
+      "camera_m": [
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+        5.115777,
+        -799.3986572265625
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+      "yaw_deg": -97.41143353882556,
+      "camera_height_basis": "legacy room floor + player eye offset",
+      "eye_offset_m": 1.6,
+      "mesh": "Saved/Linux/l135/capture-legacy-connected-room.vfmesh",
+      "image": "Standalone/Research/WorldAssemblerM3/Linux135/captures/legacy-connected-room.png",
+      "mesh_log": "Saved/Linux/l135/capture-legacy-connected-room-mesh.log",
+      "render_log": "Saved/Linux/l135/capture-legacy-connected-room-render.log"
+    },
+    {
+      "name": "legacy-origin-tunnel",
+      "recipe": "legacy-tunnel-network",
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+      "yaw_deg": 82.58856646117444,
+      "camera_height_basis": "near the legacy tunnel centerline",
+      "eye_offset_m": null,
+      "mesh": "Saved/Linux/l135/capture-legacy-origin-tunnel.vfmesh",
+      "image": "Standalone/Research/WorldAssemblerM3/Linux135/captures/legacy-origin-tunnel.png",
+      "mesh_log": "Saved/Linux/l135/capture-legacy-origin-tunnel-mesh.log",
+      "render_log": "Saved/Linux/l135/capture-legacy-origin-tunnel-render.log"
+    }
+  ]
+}