feat: prisma schema, groups API, deploy workflow

app/server/api/nodes/index.get.ts

@@ -0,0 +1,14 @@
+import { requireAuth } from '~/server/utils/auth'
+import { nodes } from '~/server/utils/db'
+
+export default defineEventHandler(async (event) => {
+  const user = requireAuth(event)
+
+  // RBAC: filter nodes by assigned_to or role
+  const allNodes = Array.from(nodes.values())
+  const filtered = user.role === 'admin'
+    ? allNodes
+    : allNodes.filter((n: any) => n.assigned_to === user.id || n.assigned_to === 'all')
+
+  return { nodes: filtered }
+})