feat(codex-link): AITURK work routing setting and beta.40

- Default routing rule (user decision, 15 Oct 2026): repeating/scheduled work goes to the AITURK IDE bot as a cron job; coding stays in Codex (itself or its subagents); 'Codex' or 'sen yap' keeps everything in Codex.
- Settings > Codex Bağlama: choice (recommended / send large work / never / custom text) with a text box and restore-default; written to bridge.json aiturk_hat.
- Bridge re-reads aiturk_hat when bridge.json changes: no restart. IDE apply keeps aiturk_hat instead of wiping it.
- Bridge version 20, IDE 1.0.0-beta.40. Jev untouched.

apps/desktop/src/app/settings/is-hatti-settings.test.tsx

@@ -0,0 +1,30 @@
+import { cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react'
+import { afterEach, expect, it, vi } from 'vitest'
+
+import { I18nProvider } from '@/i18n/context'
+
+import { IsHattiSettingsView } from './is-hatti-settings'
+
+afterEach(() => {
+  cleanup()
+  delete (window as unknown as { hermesDesktop?: unknown }).hermesDesktop
+})
+
+it('shows the custom text box only for custom text and saves the choice', async () => {
+  const save = vi.fn(async (s: unknown) => s)
+  ;(window as unknown as { hermesDesktop: unknown }).hermesDesktop = {
+    codexLink: { getIsHatti: async () => ({ secim: 'onerilen', talimat: '' }), setIsHatti: save }
+  }
+  render(<I18nProvider configClient={null} initialLocale="tr"><IsHattiSettingsView /></I18nProvider>)
+  const select = await screen.findByRole('combobox', { name: 'İş dağıtımı' })
+  expect(screen.queryByRole('textbox')).toBeNull()
+  fireEvent.change(select, { target: { value: 'ozel' } })
+  const box = screen.getByRole('textbox', { name: 'Codex’e eklenecek kural' })
+  expect((screen.getByRole('button', { name: 'Kaydet' }) as HTMLButtonElement).disabled).toBe(true)
+  fireEvent.change(box, { target: { value: 'kendi kuralım' } })
+  fireEvent.click(screen.getByRole('button', { name: 'Kaydet' }))
+  await waitFor(() => expect(save).toHaveBeenCalledWith({ secim: 'ozel', talimat: 'kendi kuralım' }))
+  expect(await screen.findByText(/yeniden başlatma gerekmez/)).toBeTruthy()
+  fireEvent.click(screen.getByRole('button', { name: 'Varsayılana dön' }))
+  await waitFor(() => expect(save).toHaveBeenLastCalledWith({ secim: 'onerilen', talimat: 'kendi kuralım' }))
+})