# Linux134 — Tunnel Network cave planner

Tunnel Network dispatches `Caves-native` (`Core.Caves.PrimitiveField` v1). The seed-0 plan is strict-valid: 30 compound rooms, 72 primitives, 31 edges, 3 side branches, and one larger destination chamber. The arrival-to-departure route is 387.067 m long, has a 59.021 m floor delta, and reaches 8.670° maximum grade. The planner maps 21 of the 47 legacy generation fields; the other 26 do not map to resolved room or edge record fields.

The second design fixed the incoming passage at its source. Shared passage composition now applies passages when the lower stratum has a native cave field; the unchanged walkability audit passes 21,425/21,425 samples.

The third design aligned the arrival-edge floor to the passage mouth, added a 0.75 m backbone floor-support budget to the resolved edge records, and raised route anchors to follow the planned edge floor. The route audit now reports 0 unsupported samples and 0 grade failures. It still fails clearance: 196/50,967 capsule samples are solid. The first is `(-14.548,-104.858,-768.115) m`, density `-0.042135`, at the route-edge-6/7 junction. Its closest planned floor is route-edge-6 at approximately `z=-768.104 m`; the probe is about 1.1 cm below that floor. The player center interpolated along the next route segment is only about 0.79 m above this higher neighboring floor, while the capsule samples extend 0.84 m below center. The native field is returning the intended solid floor backing, which intrudes into the capsule near the overlapping descending edges. The remaining issue is clearance planning across neighboring edge floors, not missing floor support, a room floor cut, or the inter-strate passage.

I stopped at this failed route gate, as requested. Shell, floor, ripple, and blocked-route negative controls pass; the route's blocked control also detects the blockage. The rest of the bar was not run: seams, fast tier, Clang/GCC W1/W8/W12 determinism and baselines, captures, L80 timing, and the post-timing UE host build. Clang headless build passed; source stamp `9845de5d3d614db620bf99aa3bd7b4fd66a440d76676e38ccad3d198b851e476`.

Logs: `Saved/Linux/l134/build-clang-support-fix.log` and `Saved/Linux/l134/walk-gate-support-fix.log`. Resolved layout: `layout-seed0-final-gate.json`.

Legacy field mapping: `RoomSpacing`, `RoomDensity`, `MinRoomRadius`, `MaxRoomRadius`, `RoomHeightRatio`, `RoomFloorCutMin`, `RoomFloorCutMax`, `RoomShapeVariety`, `OriginRoomRadius`, `OriginRoomMaxConnections`, `TunnelMinRadius`, `TunnelMaxRadius`, `TunnelDensity`, `MaxTunnelLength`, `TunnelWarpStrength`, `TunnelHorizontalBias`, `bTunnelsFlowTowardOrigin`, `CaveWarpStrength`, `SurfaceRoughness`, `RoughnessFrequency`, and `SDFBlendRadius`. Unmapped: `BaseDensity`, `BoundarySealThickness`, `CaveWarpFrequency`, `DomainWarpFrequency`, `DomainWarpStrength`, `FloorBias`, `FloorReliefFrequency`, `FloorReliefStrength`, `RoomMouthRiseBlendVoxels`, `RoomMouthRiseStrength`, `TunnelEndpointZOffset`, `TunnelFloorGentleSlopeThreshold`, `TunnelFloorLedgeCountPreference`, `TunnelFloorMaxLedgeHeight`, `TunnelFloorMaxLedges`, `TunnelFloorTerraceStepHeight`, `VerticalScale`, `WaterLevelRelative`, `WormFrequency`, `WormHorizontalBias`, `WormNetworkRange`, `WormStrength`, `WormThreshold`, `bTunnelFloorEnabled`, `bTunnelFloorTerracingEnabled`, and `RoughnessNoiseType`.