fix(terminal): refit after fonts load

apps/next/tests/unit/terminal-fit.test.ts

@@ -0,0 +1,47 @@
+import { scheduleTerminalFits } from '@/components/agent-workspace/terminal-fit';
+import { describe, expect, test, vi } from 'vitest';
+
+const flush = async () => {
+  await Promise.resolve();
+  await Promise.resolve();
+};
+
+describe('scheduleTerminalFits', () => {
+  test('fits in rAF and again after fonts.ready and nerd-font load', async () => {
+    const fit = vi.fn();
+    const sendResize = vi.fn();
+    let rafCb: (() => void) | undefined;
+
+    scheduleTerminalFits({
+      fit,
+      sendResize,
+      fontsReady: Promise.resolve(),
+      loadNerdFont: () => Promise.resolve(),
+      raf: (cb) => {
+        rafCb = cb;
+      },
+      isAborted: () => false,
+    });
+    rafCb?.();
+    await flush();
+
+    expect(fit).toHaveBeenCalledTimes(3);
+    expect(sendResize).toHaveBeenCalledTimes(3);
+  });
+
+  test('does nothing once aborted', async () => {
+    const fit = vi.fn();
+
+    scheduleTerminalFits({
+      fit,
+      sendResize: vi.fn(),
+      fontsReady: Promise.resolve(),
+      loadNerdFont: () => Promise.resolve(),
+      raf: (cb) => cb(),
+      isAborted: () => true,
+    });
+    await flush();
+
+    expect(fit).not.toHaveBeenCalled();
+  });
+});