feat: initial brainstorming app — Nuxt 3 + SQLite + admin auth

Nuxt 3 app with:
- SQLite (better-sqlite3) for persistence
- Anonymous idea submission and voting
- Admin auth with session cookies
- AI analysis via Gemini API
- Nuxt UI components + Tailwind

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/pages/index.vue

@@ -0,0 +1,157 @@
+<script setup lang="ts">
+const { admin } = useAuth()
+
+const categories = ['UTAM/Playwright', 'Jira Automation', 'Documentation', 'Testing', 'Dev Workflow', 'General']
+const newIdea = ref('')
+const category = ref('General')
+const hasSubmitted = ref(false)
+const revealAll = ref(false)
+const toast = useToast()
+
+const { data: ideas, refresh } = useFetch<any[]>('/api/ideas')
+
+async function submitIdea() {
+  if (!newIdea.value.trim()) return
+  await $fetch('/api/ideas', {
+    method: 'POST',
+    body: { text: newIdea.value, category: category.value },
+  })
+  newIdea.value = ''
+  hasSubmitted.value = true
+  revealAll.value = true
+  toast.add({ title: 'Idea guardada', color: 'success' })
+  refresh()
+}
+
+async function vote(id: number) {
+  try {
+    await $fetch(`/api/votes/${id}`, { method: 'POST' })
+    refresh()
+  } catch {
+    toast.add({ title: 'Ya has votado esta idea', color: 'warning' })
+  }
+}
+
+async function deleteIdea(id: number) {
+  await $fetch(`/api/ideas/${id}`, { method: 'DELETE' })
+  refresh()
+}
+
+async function toggleHide(idea: any) {
+  await $fetch(`/api/ideas/${idea.id}`, {
+    method: 'PATCH',
+    body: { hidden: !idea.hidden },
+  })
+  refresh()
+}
+
+function isHidden() {
+  return !revealAll.value && !hasSubmitted.value
+}
+</script>
+
+<template>
+  <div class="min-h-screen bg-neutral-50 text-neutral-900 p-4 md:p-8">
+    <header class="max-w-6xl mx-auto flex flex-col md:flex-row md:items-center justify-between mb-8 gap-4">
+      <div>
+        <h1 class="text-3xl font-bold flex items-center gap-3">
+          Automation Brainstorming
+        </h1>
+        <p class="text-neutral-500 mt-1">Propuestas sin fricción, 100% anónimo.</p>
+      </div>
+      <div class="flex gap-2">
+        <UBadge color="success" variant="subtle">Interno</UBadge>
+        <NuxtLink v-if="!admin" to="/login">
+          <UBadge color="neutral" variant="subtle" class="cursor-pointer">Admin</UBadge>
+        </NuxtLink>
+        <NuxtLink v-else to="/admin">
+          <UBadge color="primary" variant="subtle" class="cursor-pointer">Panel Admin</UBadge>
+        </NuxtLink>
+      </div>
+    </header>
+
+    <main class="max-w-6xl mx-auto grid grid-cols-1 lg:grid-cols-3 gap-8">
+      <!-- Submit form -->
+      <div class="lg:col-span-1 space-y-6">
+        <UCard>
+          <template #header>
+            <h2 class="text-lg font-semibold">Nueva Iniciativa</h2>
+          </template>
+          <form class="space-y-4" @submit.prevent="submitIdea">
+            <UFormField label="Categoría">
+              <USelect v-model="category" :items="categories" />
+            </UFormField>
+            <UFormField label="¿Qué te gustaría automatizar?">
+              <UTextarea v-model="newIdea" :rows="4" placeholder="Ej: Automatizar el mapeo de tests en Jira..." />
+            </UFormField>
+            <UButton type="submit" block :disabled="!newIdea.trim()">
+              Enviar Idea
+            </UButton>
+          </form>
+        </UCard>
+      </div>
+
+      <!-- Ideas wall -->
+      <div class="lg:col-span-2 space-y-4">
+        <div class="flex items-center justify-between mb-2">
+          <h2 class="text-xl font-bold">
+            Tablón de Ideas ({{ ideas?.length ?? 0 }})
+          </h2>
+          <UButton
+            variant="ghost"
+            size="xs"
+            @click="revealAll = !revealAll"
+          >
+            {{ revealAll ? 'Ocultar por anonimato' : 'Revelar todas' }}
+          </UButton>
+        </div>
+
+        <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
+          <UCard v-for="idea in ideas" :key="idea.id">
+            <div class="flex justify-between items-start mb-3">
+              <UBadge v-if="!isHidden()" color="primary" variant="subtle" size="xs">
+                {{ idea.category }}
+              </UBadge>
+              <UBadge v-else color="neutral" variant="subtle" size="xs">???</UBadge>
+              <span class="text-xs text-neutral-400">{{ new Date(idea.created_at).toLocaleDateString() }}</span>
+            </div>
+
+            <p
+              class="text-sm leading-relaxed mb-4"
+              :class="isHidden() ? 'blur-sm select-none' : ''"
+            >
+              {{ isHidden() ? 'Envía tu idea primero para ver las demás.' : idea.text }}
+            </p>
+
+            <div class="flex items-center justify-between pt-3 border-t border-neutral-100">
+              <UButton variant="ghost" size="xs" @click="vote(idea.id)">
+                +1 Votar
+                <UBadge v-if="idea.votes > 0" color="primary" size="xs" class="ml-1">{{ idea.votes }}</UBadge>
+              </UButton>
+
+              <!-- Admin actions -->
+              <div v-if="admin" class="flex gap-1">
+                <UButton
+                  variant="ghost"
+                  size="xs"
+                  :color="idea.hidden ? 'success' : 'warning'"
+                  @click="toggleHide(idea)"
+                >
+                  {{ idea.hidden ? 'Mostrar' : 'Ocultar' }}
+                </UButton>
+                <UButton variant="ghost" size="xs" color="error" @click="deleteIdea(idea.id)">
+                  Borrar
+                </UButton>
+              </div>
+            </div>
+          </UCard>
+        </div>
+
+        <div v-if="!ideas?.length" class="text-center py-20 bg-white rounded-2xl border-2 border-dashed border-neutral-200">
+          <h3 class="text-neutral-500 font-medium">Aún no hay ideas.</h3>
+          <p class="text-neutral-400 text-sm">¡Sé el primero!</p>
+        </div>
+      </div>
+    </main>
+  </div>
+</template>