feat(import): add deterministic OpenAPI normalized IR

crates/crank-import/src/rest/schema.rs

@@ -32,6 +32,8 @@ pub fn schema_from_openapi(
     let Some(value) = value else {
         return primitive(SchemaKind::String, required, description);
     };
+    // NormalizedIR keeps composition typed; the legacy preview adapter retains
+    // its historical first-branch projection for pending v1 jobs.
     let resolved = collapse_composition(value);
 
     if let Some(values) = resolved.get("enum").and_then(Value::as_array) {
@@ -100,6 +102,17 @@ pub fn schema_from_openapi(
     }
 }
 
+fn collapse_composition(value: &Value) -> Value {
+    for key in ["allOf", "oneOf", "anyOf"] {
+        if let Some(items) = value.get(key).and_then(Value::as_array)
+            && let Some(first) = items.first()
+        {
+            return first.clone();
+        }
+    }
+    value.clone()
+}
+
 pub fn object_with_fields(description: Option<String>, fields: BTreeMap<String, Schema>) -> Schema {
     Schema {
         kind: SchemaKind::Object,
@@ -190,14 +203,3 @@ fn text(value: &Value, key: &str) -> Option<String> {
         .and_then(Value::as_str)
         .map(ToOwned::to_owned)
 }
-
-fn collapse_composition(value: &Value) -> Value {
-    for key in ["allOf", "oneOf", "anyOf"] {
-        if let Some(items) = value.get(key).and_then(Value::as_array)
-            && let Some(first) = items.first()
-        {
-            return first.clone();
-        }
-    }
-    value.clone()
-}