chore(tests): remove reproduction test

Removed the test file `src/agents/sandbox/docker.test.ts` as requested in code review.

src/agents/sandbox/docker.test.ts

@@ -1,44 +0,0 @@
-import { spawn } from "node:child_process";
-import { describe, expect, it, vi, afterEach } from "vitest";
-import { EventEmitter } from "events";
-import { ensureDockerImage } from "./docker.js";
-
-vi.mock("node:child_process", () => ({
-  spawn: vi.fn(),
-}));
-
-describe("ensureDockerImage", () => {
-  afterEach(() => {
-    vi.clearAllMocks();
-  });
-
-  function mockSpawn(exitCode: number, stdout: string, stderr: string) {
-    const child = new EventEmitter() as any;
-    child.stdout = new EventEmitter();
-    child.stderr = new EventEmitter();
-    (spawn as any).mockReturnValue(child);
-
-    setTimeout(() => {
-      child.stdout.emit("data", Buffer.from(stdout));
-      child.stderr.emit("data", Buffer.from(stderr));
-      child.emit("close", exitCode);
-    }, 10);
-    return child;
-  }
-
-  it("throws 'Sandbox image not found' when docker inspect fails with 'No such image'", async () => {
-    mockSpawn(1, "", "Error: No such image: test-image");
-
-    await expect(ensureDockerImage("test-image")).rejects.toThrow(
-      "Sandbox image not found: test-image. Build or pull it first."
-    );
-  });
-
-  it("throws 'Failed to inspect sandbox image' when docker inspect fails with other errors", async () => {
-    mockSpawn(1, "", "permission denied");
-
-    await expect(ensureDockerImage("test-image")).rejects.toThrow(
-      "Failed to inspect sandbox image: permission denied"
-    );
-  });
-});