feat: prisma schema, groups API, deploy workflow

app/server/api/admin/stats.get.ts

@@ -0,0 +1,28 @@
+import { requireAuth } from '~/server/utils/auth'
+import { users, canvases, pushSubscriptions } from '~/server/utils/db'
+
+export default defineEventHandler(async (event) => {
+  const user = requireAuth(event)
+  if (user.role !== 'admin') {
+    throw createError({ statusCode: 403, message: 'Admin access required' })
+  }
+
+  const usersList = Array.from(users.values())
+  const canvasesList = Array.from(canvases.values()).map(c => ({
+    id: c.id,
+    name: c.name,
+    nodeCount: c.nodes.length,
+    updatedAt: c.updatedAt
+  }))
+
+  return {
+    users: usersList,
+    canvases: canvasesList,
+    stats: {
+      users: usersList.length,
+      canvases: canvasesList.length,
+      nodes: canvasesList.reduce((sum, c) => sum + c.nodeCount, 0),
+      pushes: pushSubscriptions.size
+    }
+  }
+})