diff --git "a/models/universal-geometry-v1/schema.json" "b/models/universal-geometry-v1/schema.json"
new file mode 100644--- /dev/null
+++ "b/models/universal-geometry-v1/schema.json"
@@ -0,0 +1,5707 @@
+{
+  "model": "universal-geometry-v1",
+  "embedding_schema_version": "1.1.0",
+  "dimensions": 1024,
+  "input_contract": {
+    "required": [
+      "GDSII geometry",
+      "layout-tool design parameter mapping"
+    ],
+    "layer_roles": [
+      "conductor",
+      "etch",
+      "port"
+    ],
+    "foreign_layouts": "provide a (layer, datatype) to role mapping; unspecified non-domain layers fall back to conductor",
+    "simulation_results_used": false
+  },
+  "blocks": {
+    "geometry_metrics": {
+      "offset": 0,
+      "dimensions": 32,
+      "values": [
+        "log1p_total_area_um2",
+        "log1p_total_perimeter_um",
+        "log1p_bbox_width_um",
+        "log1p_bbox_height_um",
+        "log_bbox_aspect_ratio",
+        "total_occupancy",
+        "conductor_occupancy",
+        "etch_occupancy",
+        "port_occupancy",
+        "centroid_x",
+        "centroid_y",
+        "mu20",
+        "mu02",
+        "mu11",
+        "eccentricity",
+        "horizontal_symmetry",
+        "vertical_symmetry",
+        "log1p_polygon_count",
+        "log1p_vertex_count",
+        "log1p_layer_count",
+        "log1p_conductor_area_um2",
+        "log1p_etch_area_um2",
+        "log1p_port_area_um2",
+        "log1p_conductor_perimeter_um",
+        "log1p_etch_perimeter_um",
+        "log1p_port_perimeter_um",
+        "conductor_centroid_x",
+        "conductor_centroid_y",
+        "etch_centroid_x",
+        "etch_centroid_y",
+        "port_centroid_x",
+        "port_centroid_y"
+      ],
+      "availability": "stored as row metadata; excluded from cosine distance"
+    },
+    "multiscale_shape": {
+      "offset": 32,
+      "dimensions": 768,
+      "channels": [
+        "signed_functional_material",
+        "signed_distance_to_functional_boundary"
+      ],
+      "raster_resolution": [
+        96,
+        96
+      ],
+      "candidate_transform": "orthonormal 2D DCT over the lowest 96x96 frequencies of each channel",
+      "selection": "largest reference-catalogue variance; simulation targets are not used",
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+    "parameter_order": "sorted traversal and commutative hashed accumulation"
+  }
+}