fix(opencode): isolate explicit home contexts

scripts/lib/invocation-environment.js

@@ -0,0 +1,17 @@
+'use strict';
+
+function resolveInvocationEnvironment(options = {}) {
+  if (Object.prototype.hasOwnProperty.call(options, 'env')) {
+    return options.env || {};
+  }
+
+  if (typeof options.homeDir === 'string' && options.homeDir.trim() !== '') {
+    return {};
+  }
+
+  return process.env;
+}
+
+module.exports = {
+  resolveInvocationEnvironment,
+};