diff --git a/public/spline-corridor-assets/debris_branch_a.glb b/public/spline-corridor-assets/debris_branch_a.glb
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diff --git a/public/spline-corridor-assets/debris_leaf_clump_a.glb b/public/spline-corridor-assets/debris_leaf_clump_a.glb
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diff --git a/public/spline-corridor-assets/debris_pebbles_a.glb b/public/spline-corridor-assets/debris_pebbles_a.glb
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diff --git a/public/spline-corridor-assets/debris_stump_small.glb b/public/spline-corridor-assets/debris_stump_small.glb
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diff --git a/public/spline-corridor-assets/edge_curb_stone_low_2m.glb b/public/spline-corridor-assets/edge_curb_stone_low_2m.glb
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diff --git a/public/spline-corridor-assets/edge_curb_stone_worn_2m.glb b/public/spline-corridor-assets/edge_curb_stone_worn_2m.glb
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diff --git a/public/spline-corridor-assets/edge_log_border_2m.glb b/public/spline-corridor-assets/edge_log_border_2m.glb
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diff --git a/public/spline-corridor-assets/edge_mossy_bank_2m.glb b/public/spline-corridor-assets/edge_mossy_bank_2m.glb
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diff --git a/public/spline-corridor-assets/edge_plank_border_2m.glb b/public/spline-corridor-assets/edge_plank_border_2m.glb
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diff --git a/public/spline-corridor-assets/edge_reeds_cluster_a.glb b/public/spline-corridor-assets/edge_reeds_cluster_a.glb
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diff --git a/public/spline-corridor-assets/edge_reeds_cluster_b.glb b/public/spline-corridor-assets/edge_reeds_cluster_b.glb
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diff --git a/public/spline-corridor-assets/edge_river_bank_rocks_2m.glb b/public/spline-corridor-assets/edge_river_bank_rocks_2m.glb
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diff --git a/public/spline-corridor-assets/edge_river_bank_soft_2m.glb b/public/spline-corridor-assets/edge_river_bank_soft_2m.glb
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diff --git a/public/spline-corridor-assets/edge_roots_border_2m.glb b/public/spline-corridor-assets/edge_roots_border_2m.glb
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diff --git a/public/spline-corridor-assets/edge_small_rocks_a_2m.glb b/public/spline-corridor-assets/edge_small_rocks_a_2m.glb
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index 00000000..3f33be83
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diff --git a/public/spline-corridor-assets/fence_post_stone.glb b/public/spline-corridor-assets/fence_post_stone.glb
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index 00000000..41dfd679
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diff --git a/public/spline-corridor-assets/fence_post_wood.glb b/public/spline-corridor-assets/fence_post_wood.glb
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index 00000000..fa7ed501
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diff --git a/public/spline-corridor-assets/fence_rail_wood_2m.glb b/public/spline-corridor-assets/fence_rail_wood_2m.glb
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diff --git a/public/spline-corridor-assets/fence_segment_rope_2m.glb b/public/spline-corridor-assets/fence_segment_rope_2m.glb
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diff --git a/public/spline-corridor-assets/fence_segment_wood_2m.glb b/public/spline-corridor-assets/fence_segment_wood_2m.glb
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diff --git a/public/spline-corridor-assets/manifest.json b/public/spline-corridor-assets/manifest.json
new file mode 100644
index 00000000..4783840b
--- /dev/null
+++ b/public/spline-corridor-assets/manifest.json
@@ -0,0 +1,731 @@
+{
+  "name": "spline_corridor_assets",
+  "unit": "meter",
+  "created_with": "Blender procedural mesh export via blender-mcp",
+  "coordinate_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+  "export_root": "/Users/giers/blender-mcp/exports/spline_corridor_assets",
+  "asset_count": 22,
+  "assets": [
+    {
+      "filename": "edge_curb_stone_low_2m.glb",
+      "category": "road_curb_edge",
+      "intended_use": "Clean low curb strip for road and path borders.",
+      "dimensions_m": {
+        "width_x": 0.3,
+        "height_y": 0.187,
+        "length_z": 2.0
+      },
+      "bounds_m": {
+        "min": [
+          -0.15,
+          0.0,
+          -1.0
+        ],
+        "max": [
+          0.15,
+          0.187,
+          1.0
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_stone_curb",
+        "mat_stone_light",
+        "mat_stone_dark"
+      ],
+      "vertices": 24,
+      "triangles": 36,
+      "file_size_bytes": 4540,
+      "notes": "2 m segment; simple readable curb with subtle stone seams."
+    },
+    {
+      "filename": "edge_curb_stone_worn_2m.glb",
+      "category": "road_curb_edge",
+      "intended_use": "Worn curb strip for older roads and trampled path edges.",
+      "dimensions_m": {
+        "width_x": 0.331,
+        "height_y": 0.186,
+        "length_z": 2.0
+      },
+      "bounds_m": {
+        "min": [
+          -0.156,
+          0.0,
+          -1.0
+        ],
+        "max": [
+          0.175,
+          0.186,
+          1.0
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_stone_curb",
+        "mat_stone_light",
+        "mat_stone_dark"
+      ],
+      "vertices": 140,
+      "triangles": 236,
+      "file_size_bytes": 14764,
+      "notes": "2 m segmented stones with chipped silhouettes and darker cracks."
+    },
+    {
+      "filename": "edge_log_border_2m.glb",
+      "category": "road_curb_edge",
+      "intended_use": "Natural log border for roads, trails, and camps.",
+      "dimensions_m": {
+        "width_x": 0.295,
+        "height_y": 0.229,
+        "length_z": 2.0
+      },
+      "bounds_m": {
+        "min": [
+          -0.115,
+          0.002,
+          -1.0
+        ],
+        "max": [
+          0.18,
+          0.231,
+          1.0
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_wood_bark",
+        "mat_wood_cut",
+        "mat_wood_dark",
+        "mat_moss_dark"
+      ],
+      "vertices": 69,
+      "triangles": 113,
+      "file_size_bytes": 8600,
+      "notes": "2 m log, low-poly round profile, cut ends, small moss patch."
+    },
+    {
+      "filename": "edge_plank_border_2m.glb",
+      "category": "road_curb_edge",
+      "intended_use": "Rough plank border for rustic trail and garden edges.",
+      "dimensions_m": {
+        "width_x": 0.24,
+        "height_y": 0.131,
+        "length_z": 2.0
+      },
+      "bounds_m": {
+        "min": [
+          -0.12,
+          0.0,
+          -1.0
+        ],
+        "max": [
+          0.12,
+          0.131,
+          1.0
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_wood_bark",
+        "mat_wood_cut",
+        "mat_wood_dark"
+      ],
+      "vertices": 48,
+      "triangles": 72,
+      "file_size_bytes": 6480,
+      "notes": "2 m plank with dark seams and simple wood-grain strips."
+    },
+    {
+      "filename": "edge_small_rocks_a_2m.glb",
+      "category": "trail_forest_edge",
+      "intended_use": "Loose small rock border for trail edges.",
+      "dimensions_m": {
+        "width_x": 0.389,
+        "height_y": 0.118,
+        "length_z": 2.067
+      },
+      "bounds_m": {
+        "min": [
+          -0.236,
+          0.0,
+          -1.031
+        ],
+        "max": [
+          0.153,
+          0.118,
+          1.036
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_stone_curb",
+        "mat_stone_dark",
+        "mat_stone_warm"
+      ],
+      "vertices": 318,
+      "triangles": 576,
+      "file_size_bytes": 31560,
+      "notes": "2 m scatter strip with low profile pebble clusters."
+    },
+    {
+      "filename": "edge_small_rocks_b_2m.glb",
+      "category": "trail_forest_edge",
+      "intended_use": "Alternate loose rock border for trail repetition variation.",
+      "dimensions_m": {
+        "width_x": 0.527,
+        "height_y": 0.153,
+        "length_z": 2.107
+      },
+      "bounds_m": {
+        "min": [
+          -0.305,
+          0.0,
+          -1.052
+        ],
+        "max": [
+          0.222,
+          0.153,
+          1.055
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_stone_warm",
+        "mat_stone_curb",
+        "mat_stone_light",
+        "mat_stone_dark",
+        "mat_moss_dark"
+      ],
+      "vertices": 241,
+      "triangles": 425,
+      "file_size_bytes": 25668,
+      "notes": "2 m wider scatter strip with warmer stones and a moss patch."
+    },
+    {
+      "filename": "edge_roots_border_2m.glb",
+      "category": "trail_forest_edge",
+      "intended_use": "Exposed root border for forest paths.",
+      "dimensions_m": {
+        "width_x": 0.474,
+        "height_y": 0.103,
+        "length_z": 2.012
+      },
+      "bounds_m": {
+        "min": [
+          -0.241,
+          -0.009,
+          -1.004
+        ],
+        "max": [
+          0.233,
+          0.094,
+          1.008
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_root_dark",
+        "mat_wood_cut",
+        "mat_moss"
+      ],
+      "vertices": 127,
+      "triangles": 199,
+      "file_size_bytes": 11344,
+      "notes": "2 m tangled roots with branch roots and small moss patches."
+    },
+    {
+      "filename": "edge_mossy_bank_2m.glb",
+      "category": "trail_forest_edge",
+      "intended_use": "Soft mossy raised bank for trail and forest path edges.",
+      "dimensions_m": {
+        "width_x": 0.66,
+        "height_y": 0.22,
+        "length_z": 2.0
+      },
+      "bounds_m": {
+        "min": [
+          -0.34,
+          0.0,
+          -1.0
+        ],
+        "max": [
+          0.32,
+          0.22,
+          1.0
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_soil",
+        "mat_moss",
+        "mat_moss_dark",
+        "mat_stone_warm"
+      ],
+      "vertices": 87,
+      "triangles": 138,
+      "file_size_bytes": 10192,
+      "notes": "2 m sloped bank with moss top, soil side, small embedded rocks."
+    },
+    {
+      "filename": "edge_river_bank_soft_2m.glb",
+      "category": "river_ditch_bank",
+      "intended_use": "Soft river or ditch bank edge.",
+      "dimensions_m": {
+        "width_x": 0.76,
+        "height_y": 0.24,
+        "length_z": 2.0
+      },
+      "bounds_m": {
+        "min": [
+          -0.42,
+          0.0,
+          -1.0
+        ],
+        "max": [
+          0.34,
+          0.24,
+          1.0
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_wet_soil",
+        "mat_sandy_bank",
+        "mat_moss_dark"
+      ],
+      "vertices": 37,
+      "triangles": 39,
+      "file_size_bytes": 4508,
+      "notes": "2 m sloped sandy/wet bank with a darker waterline side."
+    },
+    {
+      "filename": "edge_river_bank_rocks_2m.glb",
+      "category": "river_ditch_bank",
+      "intended_use": "Rocky river or ditch bank edge.",
+      "dimensions_m": {
+        "width_x": 0.78,
+        "height_y": 0.2,
+        "length_z": 2.0
+      },
+      "bounds_m": {
+        "min": [
+          -0.44,
+          0.0,
+          -1.0
+        ],
+        "max": [
+          0.34,
+          0.2,
+          1.0
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_soil",
+        "mat_wet_soil",
+        "mat_stone_dark",
+        "mat_stone_curb",
+        "mat_stone_warm",
+        "mat_moss"
+      ],
+      "vertices": 238,
+      "triangles": 418,
+      "file_size_bytes": 26000,
+      "notes": "2 m sloped muddy bank with embedded stones."
+    },
+    {
+      "filename": "edge_reeds_cluster_a.glb",
+      "category": "river_ditch_bank",
+      "intended_use": "Small reed cluster for river banks and ditches.",
+      "dimensions_m": {
+        "width_x": 0.46,
+        "height_y": 0.943,
+        "length_z": 0.621
+      },
+      "bounds_m": {
+        "min": [
+          -0.226,
+          -0.001,
+          -0.301
+        ],
+        "max": [
+          0.234,
+          0.943,
+          0.32
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_reed_tan",
+        "mat_reed_green",
+        "mat_moss_dark"
+      ],
+      "vertices": 302,
+      "triangles": 282,
+      "file_size_bytes": 16516,
+      "notes": "Compact cluster; origin at ground center for scatter placement."
+    },
+    {
+      "filename": "edge_reeds_cluster_b.glb",
+      "category": "river_ditch_bank",
+      "intended_use": "Taller reed cluster variation for river banks and ditches.",
+      "dimensions_m": {
+        "width_x": 0.635,
+        "height_y": 1.215,
+        "length_z": 0.505
+      },
+      "bounds_m": {
+        "min": [
+          -0.333,
+          -0.001,
+          -0.239
+        ],
+        "max": [
+          0.302,
+          1.214,
+          0.265
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_reed_tan",
+        "mat_reed_green",
+        "mat_moss_dark"
+      ],
+      "vertices": 446,
+      "triangles": 420,
+      "file_size_bytes": 23692,
+      "notes": "Wider and taller compact cluster for scatter variation."
+    },
+    {
+      "filename": "fence_post_wood.glb",
+      "category": "fence_repeater",
+      "intended_use": "Standalone rustic wooden fence post.",
+      "dimensions_m": {
+        "width_x": 0.18,
+        "height_y": 1.16,
+        "length_z": 0.15
+      },
+      "bounds_m": {
+        "min": [
+          -0.09,
+          0.0,
+          -0.075
+        ],
+        "max": [
+          0.09,
+          1.16,
+          0.075
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_wood_bark",
+        "mat_wood_cut",
+        "mat_wood_dark"
+      ],
+      "vertices": 44,
+      "triangles": 72,
+      "file_size_bytes": 6220,
+      "notes": "Post origin is bottom center at ground; rail notches align with segment rails."
+    },
+    {
+      "filename": "fence_rail_wood_2m.glb",
+      "category": "fence_repeater",
+      "intended_use": "Standalone 2 m rustic rail for fence repeaters.",
+      "dimensions_m": {
+        "width_x": 0.158,
+        "height_y": 0.107,
+        "length_z": 2.0
+      },
+      "bounds_m": {
+        "min": [
+          -0.055,
+          0.666,
+          -1.0
+        ],
+        "max": [
+          0.103,
+          0.774,
+          1.0
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_wood_bark",
+        "mat_wood_cut",
+        "mat_wood_dark"
+      ],
+      "vertices": 28,
+      "triangles": 48,
+      "file_size_bytes": 4720,
+      "notes": "Rail geometry sits at intended fence height while origin remains on the ground baseline."
+    },
+    {
+      "filename": "fence_segment_wood_2m.glb",
+      "category": "fence_repeater",
+      "intended_use": "Complete 2 m wooden fence segment.",
+      "dimensions_m": {
+        "width_x": 0.14,
+        "height_y": 1.13,
+        "length_z": 2.04
+      },
+      "bounds_m": {
+        "min": [
+          -0.07,
+          0.0,
+          -1.02
+        ],
+        "max": [
+          0.07,
+          1.13,
+          1.02
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_wood_bark",
+        "mat_wood_cut"
+      ],
+      "vertices": 88,
+      "triangles": 152,
+      "file_size_bytes": 8884,
+      "notes": "Two posts and two rails aligned along +Z spline direction."
+    },
+    {
+      "filename": "fence_segment_rope_2m.glb",
+      "category": "fence_repeater",
+      "intended_use": "Complete 2 m rope fence segment.",
+      "dimensions_m": {
+        "width_x": 0.136,
+        "height_y": 1.03,
+        "length_z": 2.036
+      },
+      "bounds_m": {
+        "min": [
+          -0.068,
+          0.0,
+          -1.018
+        ],
+        "max": [
+          0.068,
+          1.03,
+          1.018
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_wood_bark",
+        "mat_wood_cut",
+        "mat_rope"
+      ],
+      "vertices": 168,
+      "triangles": 288,
+      "file_size_bytes": 15904,
+      "notes": "Two wooden posts with sagging rope rails along +Z."
+    },
+    {
+      "filename": "fence_post_stone.glb",
+      "category": "fence_repeater",
+      "intended_use": "Standalone stacked stone fence post.",
+      "dimensions_m": {
+        "width_x": 0.258,
+        "height_y": 0.72,
+        "length_z": 0.261
+      },
+      "bounds_m": {
+        "min": [
+          -0.133,
+          0.0,
+          -0.133
+        ],
+        "max": [
+          0.124,
+          0.72,
+          0.129
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_stone_dark",
+        "mat_stone_curb",
+        "mat_stone_warm",
+        "mat_stone_light"
+      ],
+      "vertices": 90,
+      "triangles": 164,
+      "file_size_bytes": 11280,
+      "notes": "Short irregular stone pillar, useful as post or marker."
+    },
+    {
+      "filename": "debris_branch_a.glb",
+      "category": "debris_scatter",
+      "intended_use": "Small fallen branch scatter asset.",
+      "dimensions_m": {
+        "width_x": 0.438,
+        "height_y": 0.073,
+        "length_z": 0.846
+      },
+      "bounds_m": {
+        "min": [
+          -0.23,
+          0.001,
+          -0.423
+        ],
+        "max": [
+          0.208,
+          0.074,
+          0.423
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_wood_bark",
+        "mat_wood_cut",
+        "mat_wood_dark"
+      ],
+      "vertices": 40,
+      "triangles": 68,
+      "file_size_bytes": 5676,
+      "notes": "Directional branch roughly aligned to +Z for optional spline-aware placement."
+    },
+    {
+      "filename": "debris_branch_b.glb",
+      "category": "debris_scatter",
+      "intended_use": "Curved fallen branch scatter variation.",
+      "dimensions_m": {
+        "width_x": 0.458,
+        "height_y": 0.065,
+        "length_z": 0.682
+      },
+      "bounds_m": {
+        "min": [
+          -0.203,
+          0.003,
+          -0.312
+        ],
+        "max": [
+          0.255,
+          0.067,
+          0.371
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_wood_dark",
+        "mat_wood_cut",
+        "mat_wood_bark"
+      ],
+      "vertices": 54,
+      "triangles": 92,
+      "file_size_bytes": 6744,
+      "notes": "Shorter curved branch with side twig."
+    },
+    {
+      "filename": "debris_pebbles_a.glb",
+      "category": "debris_scatter",
+      "intended_use": "Small pebble cluster for scatter placement.",
+      "dimensions_m": {
+        "width_x": 0.495,
+        "height_y": 0.053,
+        "length_z": 0.351
+      },
+      "bounds_m": {
+        "min": [
+          -0.253,
+          0.0,
+          -0.196
+        ],
+        "max": [
+          0.242,
+          0.053,
+          0.156
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_stone_dark",
+        "mat_stone_curb",
+        "mat_stone_warm",
+        "mat_stone_light"
+      ],
+      "vertices": 321,
+      "triangles": 578,
+      "file_size_bytes": 32584,
+      "notes": "Compact low-profile pebble clump."
+    },
+    {
+      "filename": "debris_leaf_clump_a.glb",
+      "category": "debris_scatter",
+      "intended_use": "Leaf litter clump for forest trail scatter.",
+      "dimensions_m": {
+        "width_x": 0.578,
+        "height_y": 0.021,
+        "length_z": 0.49
+      },
+      "bounds_m": {
+        "min": [
+          -0.276,
+          0.008,
+          -0.245
+        ],
+        "max": [
+          0.302,
+          0.029,
+          0.245
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_leaf_brown",
+        "mat_leaf_ochre",
+        "mat_leaf_dark",
+        "mat_wood_dark",
+        "mat_wood_cut"
+      ],
+      "vertices": 84,
+      "triangles": 56,
+      "file_size_bytes": 6704,
+      "notes": "Layered low-poly leaf cards plus a small twig; procedural colors only."
+    },
+    {
+      "filename": "debris_stump_small.glb",
+      "category": "debris_scatter",
+      "intended_use": "Small stump scatter asset.",
+      "dimensions_m": {
+        "width_x": 0.473,
+        "height_y": 0.329,
+        "length_z": 0.436
+      },
+      "bounds_m": {
+        "min": [
+          -0.193,
+          -0.006,
+          -0.232
+        ],
+        "max": [
+          0.281,
+          0.323,
+          0.204
+        ]
+      },
+      "origin_convention": "Target/import axes: origin at the ground baseline, centered in width and segment length unless noted; +X is left/right width, +Y is up, +Z is forward/spline direction.",
+      "materials": [
+        "mat_wood_bark",
+        "mat_wood_cut",
+        "mat_wood_dark",
+        "mat_root_dark",
+        "mat_moss"
+      ],
+      "vertices": 78,
+      "triangles": 120,
+      "file_size_bytes": 9420,
+      "notes": "Low stump with exposed roots and moss accent."
+    }
+  ],
+  "limitations": [
+    "Materials are simple procedural Blender materials with no external texture dependencies.",
+    "Meshes are lightweight starter assets intended for medium-distance readability, not close-up hero props.",
+    "The standalone rail uses the ground baseline origin for alignment with fence posts, although the rail mesh itself is elevated."
+  ]
+}