Address review feedback from freben

- Use cli-defaults instead of listing individual CLI modules in
  create-app template and root package.json
- Move nodeTransform config files from cli-module-build to cli-node
  to avoid cross-module direct imports
- Rename cli-module-create-github-app to cli-module-github
- Start createCliModule init chain with Promise.resolve()
- Deduplicate exitWithError in runCliModule.ts
- Extract shared isCommandNodeHidden to @internal/cli
- Add explanatory comment for fromArray deduplication field
- Restore error for cli role packages missing bin in runCliExtraction

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
Made-with: Cursor

packages/cli-internal/src/InternalCommandNode.ts

@@ -53,3 +53,17 @@ export const OpaqueCommandLeafNode = OpaqueType.create<{
   type: '@backstage/CommandLeafNode',
   versions: ['v1'],
 });
+
+/**
+ * Checks whether a command node should be hidden from help output.
+ * Leaf nodes are hidden if they are deprecated or experimental.
+ * Tree nodes are hidden if all of their children are hidden.
+ */
+export function isCommandNodeHidden(node: CommandNode): boolean {
+  if (OpaqueCommandLeafNode.isType(node)) {
+    const { command } = OpaqueCommandLeafNode.toInternal(node);
+    return !!command.deprecated || !!command.experimental;
+  }
+  const { children } = OpaqueCommandTreeNode.toInternal(node);
+  return children.every(child => isCommandNodeHidden(child));
+}

packages/cli-internal/src/index.ts

@@ -23,4 +23,5 @@ export type {
 export {
   OpaqueCommandTreeNode,
   OpaqueCommandLeafNode,
+  isCommandNodeHidden,
 } from './InternalCommandNode';