feat: support bare name assignments in interactive and function scopes

crates/frontend/editor/ast.schema.json

@@ -1,6 +1,6 @@
 {
   "$schema": "https://json-schema.org/draft/2020-12/schema",
-  "$id": "urn:endor:ast:sha256:c0da1a2640ad85f2c8e8159a10756e649d3aab179823a7cd890d9ebbb7f5d46e",
+  "$id": "urn:endor:ast:sha256:8c89fde6c029357a0809751c41cb46d59972b987bbe1b25c0cced4bfcdbe2a7b",
   "$ref": "#/$defs/AstDocument",
   "$defs": {
     "Span": {
@@ -27,7 +27,7 @@
       "type": "object",
       "properties": {
         "schema": {
-          "const": "urn:endor:ast:sha256:c0da1a2640ad85f2c8e8159a10756e649d3aab179823a7cd890d9ebbb7f5d46e"
+          "const": "urn:endor:ast:sha256:8c89fde6c029357a0809751c41cb46d59972b987bbe1b25c0cced4bfcdbe2a7b"
         },
         "root": {
           "$ref": "#/$defs/AstRoot"
@@ -266,6 +266,22 @@
           ],
           "additionalProperties": false
         },
+        {
+          "type": "object",
+          "properties": {
+            "kind": {
+              "const": "Assignment"
+            },
+            "data": {
+              "$ref": "#/$defs/Assignment"
+            }
+          },
+          "required": [
+            "kind",
+            "data"
+          ],
+          "additionalProperties": false
+        },
         {
           "type": "object",
           "properties": {
@@ -336,6 +352,26 @@
       ],
       "additionalProperties": false
     },
+    "Assignment": {
+      "type": "object",
+      "properties": {
+        "name": {
+          "$ref": "#/$defs/Name"
+        },
+        "value": {
+          "$ref": "#/$defs/Expr"
+        },
+        "span": {
+          "$ref": "#/$defs/Span"
+        }
+      },
+      "required": [
+        "name",
+        "value",
+        "span"
+      ],
+      "additionalProperties": false
+    },
     "ReturnStatement": {
       "type": "object",
       "properties": {