feat: Archivum skeleton — Go/GraphQL backend + Vue 3 PWA frontend

Full project scaffold: multi-stage Dockerfile (ARM64/AMD64), AsciiDoc↔TipTap
bridge, Setup Wizard, CodeMirror source editor, Git-backed storage layer,
LDAP+JWT auth skeleton, Tailwind mobile-first layout, and VS Code build/push
tasks targeting registry at 192.168.0.19:5000.

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

frontend/src/components/wizard/SetupWizard.vue

@@ -0,0 +1,134 @@
+<script setup lang="ts">
+import { reactive, ref } from 'vue'
+import { useRouter } from 'vue-router'
+import { gql } from '@/lib/gql'
+import { useAppStore } from '@/stores/app'
+
+const router = useRouter()
+const app = useAppStore()
+
+const step = ref(1)
+const error = ref('')
+const submitting = ref(false)
+
+const form = reactive({
+  storagePath: '/data/wiki',
+  adminUser:   'admin',
+  adminPass:   '',
+  jwtSecret:   crypto.randomUUID().replace(/-/g, ''),
+  ldapEnabled: false,
+  ldap: {
+    host: '',
+    port: 389,
+    baseDN: '',
+    bindDN: '',
+    bindPassword: '',
+  },
+})
+
+async function submit() {
+  error.value = ''
+  submitting.value = true
+  try {
+    await gql(
+      `mutation Setup($i: SetupInput!) { setup(input: $i) }`,
+      {
+        i: {
+          storagePath: form.storagePath,
+          adminUser:   form.adminUser,
+          adminPass:   form.adminPass,
+          jwtSecret:   form.jwtSecret,
+          ldap:        form.ldapEnabled ? form.ldap : null,
+        },
+      },
+    )
+    app.requiresSetup = false
+    await app.login(form.adminUser, form.adminPass)
+    router.replace('/')
+  } catch (e: unknown) {
+    error.value = e instanceof Error ? e.message : String(e)
+  } finally {
+    submitting.value = false
+  }
+}
+</script>
+
+<template>
+  <div class="min-h-screen flex items-center justify-center bg-surface-900 px-4">
+    <div class="w-full max-w-md bg-surface-800 rounded-2xl p-8 shadow-xl">
+      <h1 class="text-2xl font-bold mb-1">Welcome to Archivum</h1>
+      <p class="text-slate-400 text-sm mb-6">Complete setup to get started.</p>
+
+      <!-- Step 1: Storage & Admin -->
+      <form v-if="step === 1" class="space-y-4" @submit.prevent="step = 2">
+        <div>
+          <label class="block text-sm mb-1">Storage path</label>
+          <input v-model="form.storagePath" required class="input" />
+        </div>
+        <div>
+          <label class="block text-sm mb-1">Admin username</label>
+          <input v-model="form.adminUser" required class="input" />
+        </div>
+        <div>
+          <label class="block text-sm mb-1">Admin password</label>
+          <input v-model="form.adminPass" type="password" required class="input" />
+        </div>
+        <button type="submit" class="btn-primary w-full">Next →</button>
+      </form>
+
+      <!-- Step 2: LDAP (optional) -->
+      <form v-else-if="step === 2" class="space-y-4" @submit.prevent="submit">
+        <label class="flex items-center gap-2 cursor-pointer">
+          <input v-model="form.ldapEnabled" type="checkbox" class="rounded" />
+          <span class="text-sm">Enable LDAP authentication</span>
+        </label>
+
+        <template v-if="form.ldapEnabled">
+          <div class="grid grid-cols-2 gap-3">
+            <div>
+              <label class="block text-sm mb-1">Host</label>
+              <input v-model="form.ldap.host" required class="input" />
+            </div>
+            <div>
+              <label class="block text-sm mb-1">Port</label>
+              <input v-model.number="form.ldap.port" type="number" required class="input" />
+            </div>
+          </div>
+          <div>
+            <label class="block text-sm mb-1">Base DN</label>
+            <input v-model="form.ldap.baseDN" required class="input" />
+          </div>
+          <div>
+            <label class="block text-sm mb-1">Bind DN</label>
+            <input v-model="form.ldap.bindDN" required class="input" />
+          </div>
+          <div>
+            <label class="block text-sm mb-1">Bind password</label>
+            <input v-model="form.ldap.bindPassword" type="password" required class="input" />
+          </div>
+        </template>
+
+        <p v-if="error" class="text-red-400 text-sm">{{ error }}</p>
+
+        <div class="flex gap-3">
+          <button type="button" class="btn-secondary flex-1" @click="step = 1">← Back</button>
+          <button type="submit" class="btn-primary flex-1" :disabled="submitting">
+            {{ submitting ? 'Setting up…' : 'Finish setup' }}
+          </button>
+        </div>
+      </form>
+    </div>
+  </div>
+</template>
+
+<style scoped>
+.input {
+  @apply w-full bg-surface-900 border border-slate-600 rounded-lg px-3 py-2 text-sm focus:outline-none focus:border-blue-500;
+}
+.btn-primary {
+  @apply py-2 rounded-lg bg-blue-600 hover:bg-blue-500 font-medium text-sm disabled:opacity-50 transition;
+}
+.btn-secondary {
+  @apply py-2 rounded-lg bg-surface-900 hover:bg-surface-700 font-medium text-sm transition;
+}
+</style>