feat: stabilize face attachments and closed spline workflows

examples/acceptance/sensor_enclosure.json

@@ -169,14 +169,9 @@
   {
    "command": "sketch.create",
    "params": {
-    "plane": {
-     "face": [
-      5,
-      -7,
-      2
-     ]
-    },
-    "name": "PCB standoff"
+    "plane": "XY",
+    "name": "PCB standoff",
+    "offset": "wall"
    }
   },
   {
@@ -283,13 +278,24 @@
    "command": "sketch.create",
    "params": {
     "plane": {
-     "face": [
+     "origin": [
       0,
-      -30,
-      12
+      0,
+      0
+     ],
+     "x_dir": [
+      1,
+      0,
+      0
+     ],
+     "y_dir": [
+      0,
+      0,
+      1
      ]
     },
-    "name": "USB"
+    "name": "USB",
+    "offset": "board_d / 2 + gap + wall"
    }
   },
   {
@@ -309,7 +315,7 @@
    "command": "sketch.dimension",
    "params": {
     "entities": [
-     "l5"
+     "l1"
     ],
     "value": "9 mm"
    }
@@ -318,7 +324,7 @@
    "command": "sketch.dimension",
    "params": {
     "entities": [
-     "l6"
+     "l2"
     ],
     "value": "3.5 mm"
    }
@@ -328,7 +334,7 @@
    "params": {
     "entities": [
      "origin",
-     "p9"
+     "p5"
     ],
     "type": "horizontal",
     "value": "usb_offset"
@@ -339,7 +345,7 @@
    "params": {
     "entities": [
      "origin",
-     "p9"
+     "p5"
     ],
     "type": "vertical",
     "value": "wall + standoff_h + 1.6 mm + 1.75 mm"
@@ -354,10 +360,10 @@
    "params": {
     "profiles": [
      [
-      "l5",
-      "l6",
-      "l7",
-      "l8"
+      "l1",
+      "l2",
+      "l3",
+      "l4"
      ]
     ],
     "distance": "-(wall + 1 mm)",
@@ -368,14 +374,9 @@
   {
    "command": "sketch.create",
    "params": {
-    "plane": {
-     "face": [
-      5,
-      -7,
-      2
-     ]
-    },
-    "name": "Lid boss"
+    "plane": "XY",
+    "name": "Lid boss",
+    "offset": "wall"
    }
   },
   {
@@ -591,13 +592,39 @@
    "command": "sketch.create",
    "params": {
     "plane": {
-     "face": [
+     "origin": [
       0,
       0,
-      25
+      0
+     ],
+     "x_dir": [
+      1,
+      0,
+      0
+     ],
+     "y_dir": [
+      0,
+      -1,
+      0
      ]
     },
-    "name": "Lid lip"
+    "name": "Lid lip",
+    "offset": "-height"
+   }
+  },
+  {
+   "command": "sketch.project",
+   "params": {
+    "refs": [
+     {
+      "face": [
+       0,
+       0,
+       25
+      ],
+      "body": "Lid"
+     }
+    ]
    }
   },
   {
@@ -672,14 +699,9 @@
   {
    "command": "sketch.create",
    "params": {
-    "plane": {
-     "face": [
-      5,
-      -7,
-      29
-     ]
-    },
-    "name": "Lid screw"
+    "plane": "XY",
+    "name": "Lid screw",
+    "offset": "height + lid_h"
    }
   },
   {