refactor(codemode): namespace public types (#35435)

packages/codemode/test/parity.test.ts

@@ -3,7 +3,7 @@ import { Effect } from "effect"
 import { CodeMode } from "../src/index.js"
 import { ToolRuntime } from "../src/tool-runtime.js"
 
-// Runs a CodeMode program with no host tools and returns the ExecuteResult. These tests pin the
+// Runs a CodeMode program with no host tools and returns the CodeMode.Result. These tests pin the
 // JS-parity behaviors for the "99% of ordinary defensive JavaScript just works" goal: cases where
 // a strict interpreter would throw but idiomatic JS yields undefined / succeeds.
 //