Add Auto/Review mode toggle and non-interactive runner

- GUI: Auto/Review toggle on TaskDetail and ProjectView
  persisted per-project in localStorage
- Runner: noninteractive param (stdin=DEVNULL, 300s timeout)
  activated by KIN_NONINTERACTIVE=1 env or param
- CLI: --allow-write flag for kin run command
- API: POST /run accepts {allow_write: bool}, sets
  KIN_NONINTERACTIVE=1 and stdin=DEVNULL for subprocess
- Fixes pipeline hanging on interactive claude input (VDOL-002)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/frontend/src/views/TaskDetail.vue

@@ -25,10 +25,25 @@ const resolvingAction = ref(false)
 const showReject = ref(false)
 const rejectReason = ref('')
 
+// Auto/Review mode (persisted per project)
+const autoMode = ref(false)
+
+function loadMode(projectId: string) {
+  autoMode.value = localStorage.getItem(`kin-mode-${projectId}`) === 'auto'
+}
+
+function toggleMode() {
+  autoMode.value = !autoMode.value
+  if (task.value) {
+    localStorage.setItem(`kin-mode-${task.value.project_id}`, autoMode.value ? 'auto' : 'review')
+  }
+}
+
 async function load() {
   try {
     const prev = task.value
     task.value = await api.taskFull(props.id)
+    if (task.value?.project_id) loadMode(task.value.project_id)
     // Auto-start polling if task is in_progress
     if (task.value.status === 'in_progress' && !polling.value) {
       startPolling()
@@ -160,7 +175,7 @@ async function reject() {
 
 async function runPipeline() {
   try {
-    await api.runTask(props.id)
+    await api.runTask(props.id, autoMode.value)
     startPolling()
     await load()
   } catch (e: any) {
@@ -270,6 +285,15 @@ const isRunning = computed(() => task.value?.status === 'in_progress')
         class="px-4 py-2 text-sm bg-red-900/50 text-red-400 border border-red-800 rounded hover:bg-red-900">
         ✗ Reject
       </button>
+      <button v-if="task.status === 'pending' || task.status === 'blocked'"
+        @click="toggleMode"
+        class="px-3 py-2 text-sm border rounded transition-colors"
+        :class="autoMode
+          ? 'bg-yellow-900/30 text-yellow-400 border-yellow-800 hover:bg-yellow-900/50'
+          : 'bg-gray-800/50 text-gray-400 border-gray-700 hover:bg-gray-800'"
+        :title="autoMode ? 'Auto mode: agents can write files' : 'Review mode: agents read-only'">
+        {{ autoMode ? '&#x1F513; Auto' : '&#x1F512; Review' }}
+      </button>
       <button v-if="task.status === 'pending' || task.status === 'blocked'"
         @click="runPipeline"
         :disabled="polling"