feat(codex-link): persist direct subscription and AITURK connection modes

apps/desktop/electron/codex-link-config.test.ts

@@ -225,12 +225,17 @@ describe('preference file', () => {
   })
 
   it('writes the contract shape and keeps unknown fields', () => {
-    expect(JSON.parse(serializeCodexLinkSettings({}, false))).toEqual({ enabled: false, kapsam: 'ide' })
+    expect(JSON.parse(serializeCodexLinkSettings({}, false))).toEqual({
+      enabled: false,
+      mod: 'dogrudan',
+      kapsam: 'ide'
+    })
 
     const { stored } = parseCodexLinkSettings('{"enabled": false, "kapsam": "hepsi", "gelecek": {"a": 1}}')
 
     expect(JSON.parse(serializeCodexLinkSettings(stored, true))).toEqual({
       enabled: true,
+      mod: 'dogrudan',
       gelecek: { a: 1 },
       kapsam: 'hepsi'
     })
@@ -308,3 +313,17 @@ describe('bridge configuration and command', () => {
     expect(codexAutostartPlan(`${deep}\\pythonw.exe`, launch, `${deep}\\baslat.pyw`)).toBeNull()
   })
 })
+
+describe('mode preference', () => {
+  it('uses direct for missing, invalid and malformed modes', () => {
+    for (const raw of [null, '{', '{}', '{"mod":"bad"}', '{"mod":false}']) {
+      expect(parseCodexLinkSettings(raw).mod).toBe('dogrudan')
+    }
+    expect(parseCodexLinkSettings('{"mod":"aiturk"}').mod).toBe('aiturk')
+  })
+  it('preserves other fields when changing mode', () => {
+    const stored = { enabled: false, mod: 'aiturk', kapsam: 'hepsi', future: { a: 1 } }
+    expect(JSON.parse(serializeCodexLinkSettings(stored, false, 'dogrudan'))).toEqual({ ...stored, mod: 'dogrudan' })
+    expect(JSON.parse(serializeCodexLinkSettings(stored, true)).mod).toBe('aiturk')
+  })
+})