feat: add scheduler admin list page with task table

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/pages/admin/scheduler/index.vue

@@ -0,0 +1,128 @@
+<script setup lang="ts">
+const { data, refresh } = await useHttpFetch("/api/scheduler/tasks")
+const stats = await useHttpFetch("/api/scheduler/stats")
+
+const showCreateModal = ref(false)
+const editingTask = ref<any>(null)
+
+const columns = [
+  { key: "name", label: "Name" },
+  { key: "cronExpression", label: "Cron" },
+  { key: "type", label: "Type" },
+  { key: "enabled", label: "Status" },
+  { key: "actions", label: "" },
+]
+
+function statusBadge(enabled: number) {
+  return enabled ? { label: "Active", color: "green" } : { label: "Paused", color: "gray" }
+}
+
+async function handleDelete(id: string) {
+  await $fetch(`/api/scheduler/tasks/${id}`, { method: "DELETE" })
+  refresh()
+}
+
+async function handleToggle(id: string, enabled: boolean) {
+  await $fetch(`/api/scheduler/tasks/${id}/toggle`, {
+    method: "POST",
+    body: { enabled },
+  })
+  refresh()
+}
+
+async function handleTrigger(id: string) {
+  await $fetch(`/api/scheduler/tasks/${id}/trigger`, { method: "POST" })
+}
+
+function openEdit(task: any) {
+  editingTask.value = task
+  showCreateModal.value = true
+}
+
+function openCreate() {
+  editingTask.value = null
+  showCreateModal.value = true
+}
+
+function onModalClose() {
+  showCreateModal.value = false
+  editingTask.value = null
+  refresh()
+}
+</script>
+
+<template>
+  <div class="p-6 max-w-6xl mx-auto">
+    <div class="flex items-center justify-between mb-6">
+      <h1 class="text-2xl font-bold">Scheduled Tasks</h1>
+      <UButton @click="openCreate">Create Task</UButton>
+    </div>
+
+    <!-- Stats bar -->
+    <div class="grid grid-cols-4 gap-4 mb-6">
+      <div class="rounded-lg border p-4">
+        <div class="text-sm text-gray-500">Total</div>
+        <div class="text-2xl font-bold">{{ stats?.data?.totalTasks ?? 0 }}</div>
+      </div>
+      <div class="rounded-lg border p-4">
+        <div class="text-sm text-gray-500">Active</div>
+        <div class="text-2xl font-bold">{{ stats?.data?.enabledTasks ?? 0 }}</div>
+      </div>
+      <div class="rounded-lg border p-4">
+        <div class="text-sm text-gray-500">Jobs Running</div>
+        <div class="text-2xl font-bold">{{ stats?.data?.activeJobs ?? 0 }}</div>
+      </div>
+      <div class="rounded-lg border p-4">
+        <div class="text-sm text-gray-500">24h Executions</div>
+        <div class="text-2xl font-bold">{{ stats?.data?.last24hExecutions ?? 0 }}</div>
+      </div>
+    </div>
+
+    <!-- Task table -->
+    <div class="rounded-lg border">
+      <UTable :rows="data?.list ?? []" :columns="columns">
+        <template #enabled-data="{ row }">
+          <UBadge :color="statusBadge(row.enabled).color" variant="subtle">
+            {{ statusBadge(row.enabled).label }}
+          </UBadge>
+        </template>
+        <template #actions-data="{ row }">
+          <div class="flex gap-1 justify-end">
+            <UButton
+              size="xs"
+              variant="ghost"
+              @click="handleTrigger(row.id)"
+            >Trigger</UButton>
+            <UButton
+              size="xs"
+              variant="ghost"
+              @click="handleToggle(row.id, !row.enabled)"
+            >
+              {{ row.enabled ? "Pause" : "Resume" }}
+            </UButton>
+            <UButton
+              size="xs"
+              variant="ghost"
+              :to="`/admin/scheduler/${row.id}`"
+            >Detail</UButton>
+            <UButton size="xs" variant="ghost" @click="openEdit(row)">Edit</UButton>
+            <UButton
+              size="xs"
+              variant="ghost"
+              color="red"
+              @click="handleDelete(row.id)"
+            >Delete</UButton>
+          </div>
+        </template>
+      </UTable>
+    </div>
+
+    <!-- Create/Edit Modal -->
+    <SchedulerTaskModal
+      v-if="showCreateModal"
+      :task="editingTask"
+      :registered-functions="data?.registeredFunctions ?? []"
+      @close="onModalClose"
+    />
+  </div>
+</template>