test(app): block real llm calls in e2e prompts (#20579)

packages/app/test/e2e/no-real-llm.test.ts

@@ -0,0 +1,27 @@
+import { describe, expect, test } from "bun:test"
+import path from "node:path"
+import { fileURLToPath } from "node:url"
+
+const dir = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../../e2e")
+
+function hasPrompt(src: string) {
+  if (!src.includes("withProject(")) return false
+  if (src.includes("withNoReplyPrompt(")) return false
+  if (src.includes("session.promptAsync({") && !src.includes("noReply: true")) return true
+  if (!src.includes("promptSelector")) return false
+  return src.includes('keyboard.press("Enter")') || src.includes('prompt.press("Enter")')
+}
+
+describe("e2e llm guard", () => {
+  test("withProject specs do not submit prompt replies", async () => {
+    const bad: string[] = []
+
+    for await (const file of new Bun.Glob("**/*.spec.ts").scan({ cwd: dir, absolute: true })) {
+      const src = await Bun.file(file).text()
+      if (!hasPrompt(src)) continue
+      bad.push(path.relative(dir, file))
+    }
+
+    expect(bad).toEqual([])
+  })
+})