feat(projects): add interactive AI app scaffold skill

tests/fixtures/fake-pi-rpc-child.mjs

@@ -80,6 +80,12 @@ function handle(command) {
     writeRecord(response(command, { counts }));
     return;
   }
+  if (command.type === 'environment') {
+    writeRecord(response(command, {
+      makeloreNodeExecutable: process.env.MAKELORE_NODE_EXECUTABLE ?? null,
+    }));
+    return;
+  }
   if (command.type === 'stderr_secret') {
     const secret = process.env.FAKE_PI_SECRET ?? 'missing-secret';
     process.stderr.write(`${'diagnostic '.repeat(50)}\n`);