feat: stabilize admin dashboard, refactor group management, implement PWA, and fix routing

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

@@ -0,0 +1,51 @@
+import { requireAuth } from '~/server/utils/auth'
+import { prisma } from '~/server/utils/prisma'
+
+export default defineEventHandler(async (event) => {
+  const user = requireAuth(event)
+
+  // 1. Считаем канвасы (личные и где участник)
+  const canvasCount = await prisma.canvas.count({
+    where: {
+      OR: [
+        { ownerId: user.id },
+        { groupId: { not: null } } // Тут можно усложнить, но для начала так
+      ]
+    }
+  })
+
+  // 2. Считаем задачи во всех доступных канвасах
+  const canvases = await prisma.canvas.findMany({
+    where: {
+      OR: [
+        { ownerId: user.id },
+        { groupId: { not: null } }
+      ]
+    },
+    select: { nodes: true }
+  })
+
+  let totalTasks = 0
+  let completedTasks = 0
+
+  for (const canvas of canvases) {
+    const nodes = (canvas.nodes as any[]) || []
+    const tasks = nodes.filter(n => n.type === 'task')
+    totalTasks += tasks.length
+    completedTasks += tasks.filter(t => t.data?.state === 'completed' || t.state === 'completed').length
+  }
+
+  // 3. Ачивки (пока возвращаем 0, так как модели нет в схеме)
+  const achievementCount = 0
+
+  return {
+    stats: {
+      canvases: canvasCount,
+      tasks: {
+        total: totalTasks,
+        completed: completedTasks
+      },
+      achievements: achievementCount
+    }
+  }
+})