MCP demo v3 (enclosure_ui_mcp.py --story v3, default): one standoff placed from the parameters (width/2 - inset, depth/2 - inset) and patterned 2 x 2 in the Rectangular Pattern dialog with spacings width - 2*inset and depth - 2*inset, then width 80 -> 100 and wall 2 -> 3 typed into the Parameters dialog; record_v2.sh is now record_ui.sh STORY. A pattern's Direction can be a straight model edge (an edge along an origin axis points the axis's way), scenario pattern_direction_edge. Dialog rows publish their widgets as dialog:<label> handles (combo items dialog:<label>:<item>, OK), the Parameters dialog its expressions (param:<name>), title and close button

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

crates/ui-egui/tests/scenarios/pattern_direction_edge.json

@@ -0,0 +1,79 @@
+[
+ {
+  "note": "A Rectangular Pattern's direction can be a straight model edge (as in Fusion), not only an origin axis or a sketch line."
+ },
+ {
+  "call": "engine.execute",
+  "params": {
+   "command": "solid.box",
+   "params": {
+    "length": 20,
+    "width": 10,
+    "height": 10
+   }
+  }
+ },
+ {
+  "call": "ui.view",
+  "params": {
+   "view": "home"
+  }
+ },
+ {
+  "start": "solid.pattern.rectangular"
+ },
+ {
+  "click": {
+   "world": [
+    10,
+    5,
+    10
+   ]
+  }
+ },
+ {
+  "click": {
+   "handle": "dialog:Direction"
+  }
+ },
+ {
+  "click": {
+   "world": [
+    10,
+    0,
+    10
+   ]
+  }
+ },
+ {
+  "click": {
+   "handle": "dialog:OK"
+  }
+ },
+ {
+  "expect": {
+   "dialog": null,
+   "bodies": 3
+  }
+ },
+ {
+  "note": "Along the picked edge (an edge along X points +X, as the axis would): copies 20 mm apart."
+ },
+ {
+  "expect": {
+   "bbox": {
+    "body": "Body3",
+    "min": [
+     40,
+     0,
+     0
+    ],
+    "max": [
+     60,
+     10,
+     10
+    ]
+   }
+  }
+ }
+]