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/lib/gql.ts

@@ -0,0 +1,24 @@
+// Minimal GraphQL client — swap for graphql-request if preferred.
+
+const API_URL = import.meta.env.VITE_API_URL ?? '/graphql'
+
+export async function gql<T = unknown>(
+  query: string,
+  variables?: Record<string, unknown>,
+): Promise<T> {
+  const token = localStorage.getItem('token')
+  const res = await fetch(API_URL, {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+      ...(token ? { Authorization: `Bearer ${token}` } : {}),
+    },
+    body: JSON.stringify({ query, variables }),
+  })
+
+  const json = await res.json()
+  if (json.errors?.length) {
+    throw new Error(json.errors[0].message)
+  }
+  return json.data as T
+}