Revert "First pass at pulling the v1.5 CLI, TUI, and Launcher clients into v2."

This reverts commit 467b01edd6.

clients/cli/__tests__/helpers/assertions.test.ts

@@ -1,42 +0,0 @@
-import { describe, it, expect } from "vitest";
-import { expectCliSuccess, expectCliFailure } from "./assertions.js";
-import type { CliResult } from "./cli-runner.js";
-
-function assertionMessage(fn: () => void): string {
-  try {
-    fn();
-    return "";
-  } catch (error) {
-    return error instanceof Error ? error.message : String(error);
-  }
-}
-
-describe("CLI assertion helpers", () => {
-  it("expectCliSuccess includes stdout and stderr on failure", () => {
-    const result: CliResult = {
-      exitCode: 1,
-      stdout: "tool output",
-      stderr: "connect error",
-      output: "tool outputconnect error",
-    };
-
-    const message = assertionMessage(() => expectCliSuccess(result));
-    expect(message).toContain("CLI exited with code 1");
-    expect(message).toContain("stdout: tool output");
-    expect(message).toContain("stderr: connect error");
-  });
-
-  it("expectCliFailure includes stdout and stderr on unexpected success", () => {
-    const result: CliResult = {
-      exitCode: 0,
-      stdout: "ok",
-      stderr: "",
-      output: "ok",
-    };
-
-    const message = assertionMessage(() => expectCliFailure(result));
-    expect(message).toContain("CLI unexpectedly exited with code 0");
-    expect(message).toContain("stdout: ok");
-    expect(message).toContain("stderr: (empty)");
-  });
-});