fix(coding-agent): ship clipboard sidecar in bun binaries

closes #4307

packages/coding-agent/test/clipboard-native.test.ts

@@ -0,0 +1,31 @@
+import { describe, expect, test, vi } from "vitest";
+import { type ClipboardModule, loadClipboardNative } from "../src/utils/clipboard-native.ts";
+
+type ClipboardRequire = (id: string) => unknown;
+
+const fakeClipboard: ClipboardModule = {
+	setText: async () => {},
+	hasImage: () => true,
+	getImageBinary: async () => [1, 2, 3],
+};
+
+describe("loadClipboardNative", () => {
+	test("falls back to the next require root", () => {
+		const primary = vi.fn<ClipboardRequire>(() => {
+			throw new Error("missing from bundled root");
+		});
+		const fallback = vi.fn<ClipboardRequire>(() => fakeClipboard);
+
+		expect(loadClipboardNative([primary, fallback])).toBe(fakeClipboard);
+		expect(primary).toHaveBeenCalledWith("@mariozechner/clipboard");
+		expect(fallback).toHaveBeenCalledWith("@mariozechner/clipboard");
+	});
+
+	test("returns null when no require root can load clipboard", () => {
+		const missing = vi.fn<ClipboardRequire>(() => {
+			throw new Error("missing");
+		});
+
+		expect(loadClipboardNative([missing])).toBeNull();
+	});
+});