kin: KIN-FIX-002 Унифицировать localStorage значения execution_mode с 'auto_complete'

Заменены все вхождения 'auto' на 'auto_complete' как значение execution_mode в localStorage-операциях:

web/frontend/src/views/TaskDetail.vue:
- Line 46: localStorage.getItem сравнение
- Line 53: localStorage.setItem значение
- Line 55: API patch значение (уже было 'auto_complete', добавлено для полноты)

web/frontend/src/views/ProjectView.vue:
- Line 171: execution_mode === 'auto' → 'auto_complete'
- Line 173: localStorage.getItem сравнение
- Line 179: localStorage.setItem значение
- Line 181: API patch значение
- Line 182: state update значение
- Line 643: template v-if condition

web/frontend/src/__tests__/filter-persistence.test.ts:
- Line 377: Type definition обновлена
- Lines 415, 433, 449: makeTaskWith параметры обновлены
- Line 479: localStorage mock значение
- Line 478: Комментарий обновлён

Все 37 тестов в filter-persistence.test.ts пройдены.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

web/frontend/src/views/TaskDetail.vue

@@ -43,14 +43,14 @@ function loadMode(t: typeof task.value) {
     // Task is in review — always show Approve/Reject regardless of localStorage
     autoMode.value = false
   } else {
-    autoMode.value = localStorage.getItem(`kin-mode-${t.project_id}`) === 'auto'
+    autoMode.value = localStorage.getItem(`kin-mode-${t.project_id}`) === 'auto_complete'
   }
 }
 
 async function toggleMode() {
   if (!task.value) return
   autoMode.value = !autoMode.value
-  localStorage.setItem(`kin-mode-${task.value.project_id}`, autoMode.value ? 'auto' : 'review')
+  localStorage.setItem(`kin-mode-${task.value.project_id}`, autoMode.value ? 'auto_complete' : 'review')
   try {
     const updated = await api.patchTask(props.id, { execution_mode: autoMode.value ? 'auto_complete' : 'review' })
     task.value = { ...task.value, ...updated }