Add user stats page and refactor user navigation; replace modal with dedicated page for user statistics, enhancing routing and UI consistency. Update localization for new status keys in both English and Russian.

CLAUDE.MD

@@ -0,0 +1,116 @@
+## Overview
+
+This document summarizes the recent changes around submissions/users pages and records guardrails to avoid similar issues in the future.
+
+We:
+- Reworked submissions and user stats UIs to use real routes/pages instead of modals.
+- Added compact progress overview for participants.
+- Introduced deep-linked details pages for submissions and users.
+- Fixed Chakra UI dialog misuse and type/translation issues.
+
+## Routing & Page Structure
+
+### Do
+- **Define all routes centrally** in `src/__data__/urls.ts` and `src/dashboard.ts`:
+  - Add both the **URL builder** (e.g. `submissionDetails(userId, submissionId)`) and the **`:param` path**.
+  - Wrap pages in `PageWrapper` in `dashboard.tsx`.
+- **Use real pages for complex views** (details, stats) instead of large modals:
+  - Submissions details: `SubmissionDetailsPage` with URL `/submissions/:userId/:submissionId`.
+  - User stats: `UserStatsPage` with URL `/users/:userId`.
+- **Pass IDs via URL**, not only component state:
+  - Use route params for `userId`, `submissionId`, etc.
+  - For “return and keep selection”, encode it as a query param (e.g. `?userId=...`) and read it on the list page.
+
+### Don’t
+- **Don’t hardcode paths in components** (e.g. `'/submissions/...'`); always use `URLs.*` helpers.
+- **Don’t rely solely on local React state for deep links**:
+  - If a view must be shareable/bookmarkable or restorable on reload, it must be addressable by URL.
+
+## Chakra UI Dialogs & Layout
+
+### Do
+- **Use dialog subcomponents only inside a dialog root**:
+  - If you use `DialogBody`, `DialogContent`, etc., they must be wrapped in `<DialogRoot>`.
+- For **standalone pages**, use plain layout components:
+  - `Box`, `Heading`, `VStack`, `Grid`, `Progress`, etc.
+  - No `Dialog*` components on normal routed pages.
+
+### Don’t
+- **Don’t import or use `DialogBody`, `DialogContent`, `DialogHeader`, etc. on regular pages**:
+  - This causes `useDialogStyles returned 'undefined'` runtime errors.
+- **Don’t mix modal patterns and page patterns**:
+  - Either a true modal (`DialogRoot` + `DialogContent`) over an existing page,
+  - Or a full page route with normal layout — not both at the same time.
+
+## Data Safety & Types
+
+### Do
+- Assume backend fields can be **either object or ID string**, per `ChallengeSubmission` types:
+  - Example safe access in submissions:
+    - Guard before reading `user.nickname` or `task.title`.
+  - Derive strings like:
+    - `const nickname = typeof rawUser === 'object' && 'nickname' in rawUser ? rawUser.nickname ?? '' : typeof rawUser === 'string' ? rawUser : ''`.
+- Normalize strings before calling `.toLowerCase()`:
+  - `const normalized = (value ?? '').toLowerCase()`.
+- When filtering/searching, **never call string methods on possibly `undefined` or non-object values**.
+
+### Don’t
+- **Don’t cast blindly** (`as ChallengeUser`) and then access `.nickname` or `.title` without guards.
+- **Don’t call `.toLowerCase()` directly on untrusted values** from API or union-typed fields.
+
+## “Back” Navigation & State Restoration
+
+### Do
+- For **details pages that should restore list state**:
+  - Encode the necessary selection into the URL when navigating _to_ details.
+  - Example: `SubmissionDetailsPage` returns to `URLs.submissions` with `?userId=...`, and `SubmissionsPage` reads `userId` from `useSearchParams` to preselect the user.
+- Prefer **semantic back actions** over bare `navigate(-1)` when the previous page/state is known:
+  - Use `navigate(URLs.submissions + '?userId=...')` or `navigate(URLs.users)` when appropriate.
+
+### Don’t
+- **Don’t rely on `navigate(-1)`** when:
+  - The previous page might not be the canonical list page,
+  - You need a specific state (e.g. selected user) restored.
+
+## i18n / Locales
+
+### Do
+- **Keep `ru.json` and `en.json` in sync** for any new keys:
+  - When adding a key under `challenge.admin.*` in one file, add the corresponding entry in the other.
+- For **status enums**, ensure all possible values have translations:
+  - `challenge.admin.users.stats.status.*` must cover all values of `taskStat.status`.
+  - `challenge.admin.submissions.status.*` must cover all submission statuses.
+- Use **consistent key naming patterns**:
+  - Example: `challenge.admin.users.stats.status.accepted`, `...status.needs_revision`, etc.
+
+### Don’t
+- **Don’t introduce new `t('...')` keys in code without adding them to both locale files**.
+- **Don’t reuse unrelated keys** just to avoid adding translations — create clear, specific keys.
+
+## UI Patterns for High-Density Overviews
+
+### Do
+- For high-density screens (e.g. 100 participants at once):
+  - Use **compact cards or rows** with:
+    - Truncated names (`truncate`),
+    - Thin `Progress` bars,
+    - Minimal text (percentage + small counters).
+  - Sort by progress to surface lagging participants.
+
+### Don’t
+- **Don’t use wide tables** when many rows must fit on one screen; prefer grids or narrow rows with fixed-width text columns and flexible progress area.
+
+## When Adding New Features
+
+Before merging:
+- **Check routing**:
+  - New URL added to `URLs`.
+  - Route wired in `dashboard.tsx`.
+- **Check data safety**:
+  - No unchecked property access on union/nullable types.
+- **Check i18n**:
+  - New keys exist in both `ru.json` and `en.json`.
+- **Check Chakra usage**:
+  - No `Dialog*` components outside a proper `<DialogRoot>` _or_ on standalone pages.
+
+

locales/en.json

@@ -137,9 +137,12 @@
   "challenge.admin.users.stats.chains.progress": "Chain progress",
   "challenge.admin.users.stats.tasks": "Tasks",
   "challenge.admin.users.stats.status.completed": "Completed",
+  "challenge.admin.users.stats.status.accepted": "Accepted",
   "challenge.admin.users.stats.status.needs_revision": "Revision",
   "challenge.admin.users.stats.status.in_progress": "In progress",
+  "challenge.admin.users.stats.status.pending": "Pending",
   "challenge.admin.users.stats.status.not_started": "Not started",
+  "challenge.admin.users.stats.status.not_attempted": "Not attempted",
   "challenge.admin.users.stats.attempts": "Attempts:",
   "challenge.admin.users.stats.avg.check.time": "Average check time",
   "challenge.admin.users.stats.close": "Close",

locales/ru.json

@@ -136,9 +136,12 @@
   "challenge.admin.users.stats.chains.progress": "Прогресс по цепочкам",
   "challenge.admin.users.stats.tasks": "Задания",
   "challenge.admin.users.stats.status.completed": "Завершено",
+  "challenge.admin.users.stats.status.accepted": "Принято",
   "challenge.admin.users.stats.status.needs_revision": "Доработка",
   "challenge.admin.users.stats.status.in_progress": "В процессе",
+  "challenge.admin.users.stats.status.pending": "Ожидает",
   "challenge.admin.users.stats.status.not_started": "Не начато",
+  "challenge.admin.users.stats.status.not_attempted": "Не пытался",
   "challenge.admin.users.stats.attempts": "Попыток:",
   "challenge.admin.users.stats.avg.check.time": "Среднее время проверки",
   "challenge.admin.users.stats.close": "Закрыть",

src/__data__/urls.ts

@@ -31,6 +31,8 @@ export const URLs = {
   
   // Users
   users: makeUrl('/users'),
+  userStats: (userId: string) => makeUrl(`/users/${userId}`),
+  userStatsPath: makeUrl('/users/:userId'),
   
   // Submissions
   submissions: makeUrl('/submissions'),

src/dashboard.tsx

@@ -9,6 +9,7 @@ import { TaskFormPage } from './pages/tasks/TaskFormPage'
 import { ChainsListPage } from './pages/chains/ChainsListPage'
 import { ChainFormPage } from './pages/chains/ChainFormPage'
 import { UsersPage } from './pages/users/UsersPage'
+import { UserStatsPage } from './pages/users/UserStatsPage'
 import { SubmissionsPage } from './pages/submissions/SubmissionsPage'
 import { SubmissionDetailsPage } from './pages/submissions/SubmissionDetailsPage'
 import { URLs } from './__data__/urls'
@@ -111,6 +112,14 @@ export const Dashboard = () => {
           </PageWrapper>
         }
       />
+      <Route
+        path={URLs.userStatsPath}
+        element={
+          <PageWrapper>
+            <UserStatsPage />
+          </PageWrapper>
+        }
+      />
 
       {/* Submissions */}
       <Route

src/pages/users/UserStatsPage.tsx

@@ -0,0 +1,196 @@
+import React from 'react'
+import { useTranslation } from 'react-i18next'
+import { useNavigate, useParams } from 'react-router-dom'
+import { Box, Heading, Text, Button, Grid, VStack, HStack, Badge, Progress } from '@chakra-ui/react'
+import { useGetUserStatsQuery } from '../../__data__/api/api'
+import { LoadingSpinner } from '../../components/LoadingSpinner'
+import { ErrorAlert } from '../../components/ErrorAlert'
+import { URLs } from '../../__data__/urls'
+
+interface RouteParams {
+  userId: string
+}
+
+export const UserStatsPage: React.FC = () => {
+  const { t } = useTranslation()
+  const navigate = useNavigate()
+  const { userId } = useParams<RouteParams>()
+
+  const { data: stats, isLoading, error, refetch } = useGetUserStatsQuery(userId!, {
+    skip: !userId,
+  })
+
+  const handleBack = () => {
+    navigate(URLs.users)
+  }
+
+  if (!userId) {
+    return (
+      <Box>
+        <Button variant="ghost" onClick={handleBack} mb={4}>
+          ← {t('challenge.admin.common.close')}
+        </Button>
+        <ErrorAlert message={t('challenge.admin.users.stats.no.data')} onRetry={handleBack} />
+      </Box>
+    )
+  }
+
+  if (isLoading) {
+    return <LoadingSpinner message={t('challenge.admin.users.stats.loading')} />
+  }
+
+  if (error) {
+    return (
+      <Box>
+        <Button variant="ghost" onClick={handleBack} mb={4}>
+          ← {t('challenge.admin.common.close')}
+        </Button>
+        <ErrorAlert message={t('challenge.admin.users.load.error')} onRetry={refetch} />
+      </Box>
+    )
+  }
+
+  if (!stats) {
+    return (
+      <Box>
+        <Button variant="ghost" onClick={handleBack} mb={4}>
+          ← {t('challenge.admin.common.close')}
+        </Button>
+        <Text color="gray.600">{t('challenge.admin.users.stats.no.data')}</Text>
+      </Box>
+    )
+  }
+
+  return (
+    <Box>
+      <HStack mb={6}>
+        <Button variant="ghost" onClick={handleBack}>
+          ← {t('challenge.admin.common.close')}
+        </Button>
+      </HStack>
+
+      <Heading mb={6}>{t('challenge.admin.users.stats.title')}</Heading>
+
+      <VStack gap={6} align="stretch">
+        {/* Overview */}
+        <Grid templateColumns="repeat(auto-fit, minmax(150px, 1fr))" gap={4}>
+          <Box>
+            <Text fontSize="sm" color="gray.600">
+              {t('challenge.admin.users.stats.completed')}
+            </Text>
+            <Text fontSize="2xl" fontWeight="bold" color="green.600">
+              {stats.completedTasks}
+            </Text>
+          </Box>
+          <Box>
+            <Text fontSize="sm" color="gray.600">
+              {t('challenge.admin.users.stats.total.submissions')}
+            </Text>
+            <Text fontSize="2xl" fontWeight="bold" color="blue.600">
+              {stats.totalSubmissions}
+            </Text>
+          </Box>
+          <Box>
+            <Text fontSize="sm" color="gray.600">
+              {t('challenge.admin.users.stats.in.progress')}
+            </Text>
+            <Text fontSize="2xl" fontWeight="bold" color="orange.600">
+              {stats.inProgressTasks}
+            </Text>
+          </Box>
+          <Box>
+            <Text fontSize="sm" color="gray.600">
+              {t('challenge.admin.users.stats.needs.revision')}
+            </Text>
+            <Text fontSize="2xl" fontWeight="bold" color="red.600">
+              {stats.needsRevisionTasks}
+            </Text>
+          </Box>
+        </Grid>
+
+        {/* Chains Progress */}
+        {stats.chainStats.length > 0 && (
+          <Box>
+            <Text fontWeight="bold" mb={3}>
+              {t('challenge.admin.users.stats.chains.progress')}
+            </Text>
+            <VStack gap={3} align="stretch">
+              {stats.chainStats.map((chain) => (
+                <Box key={chain.chainId}>
+                  <HStack justify="space-between" mb={1}>
+                    <Text fontSize="sm" fontWeight="medium">
+                      {chain.chainName}
+                    </Text>
+                    <Text fontSize="sm" color="gray.600">
+                      {chain.completedTasks} / {chain.totalTasks}
+                    </Text>
+                  </HStack>
+                  <Progress.Root value={chain.progress} colorPalette="teal" size="sm">
+                    <Progress.Track>
+                      <Progress.Range />
+                    </Progress.Track>
+                  </Progress.Root>
+                </Box>
+              ))}
+            </VStack>
+          </Box>
+        )}
+
+        {/* Task Stats */}
+        {stats.taskStats.length > 0 && (
+          <Box>
+            <Text fontWeight="bold" mb={3}>
+              {t('challenge.admin.users.stats.tasks')}
+            </Text>
+            <VStack gap={2} align="stretch" maxH="300px" overflowY="auto">
+              {stats.taskStats.map((taskStat) => {
+                const getBadgeColor = () => {
+                  if (taskStat.status === 'completed') return 'green'
+                  if (taskStat.status === 'needs_revision') return 'red'
+                  return 'gray'
+                }
+
+                return (
+                  <Box
+                    key={taskStat.taskId}
+                    p={3}
+                    bg="gray.50"
+                    borderRadius="md"
+                    borderWidth="1px"
+                    borderColor="gray.200"
+                  >
+                    <HStack justify="space-between" mb={1}>
+                      <Text fontSize="sm" fontWeight="medium">
+                        {taskStat.taskTitle}
+                      </Text>
+                      <Badge colorPalette={getBadgeColor()}>
+                        {t(`challenge.admin.users.stats.status.${taskStat.status}`)}
+                      </Badge>
+                    </HStack>
+                    <Text fontSize="xs" color="gray.600">
+                      {t('challenge.admin.users.stats.attempts')} {taskStat.totalAttempts}
+                    </Text>
+                  </Box>
+                )
+              })}
+            </VStack>
+          </Box>
+        )}
+
+        {/* Average Check Time */}
+        <Box p={3} bg="purple.50" borderRadius="md">
+          <Text fontSize="sm" color="gray.700" mb={1}>
+            {t('challenge.admin.users.stats.avg.check.time')}
+          </Text>
+          <Text fontSize="lg" fontWeight="bold" color="purple.700">
+            {t('challenge.admin.dashboard.check.time.value', {
+              time: (stats.averageCheckTimeMs / 1000).toFixed(2),
+            })}
+          </Text>
+        </Box>
+      </VStack>
+    </Box>
+  )
+}
+
+

src/pages/users/UsersPage.tsx

@@ -1,38 +1,21 @@
 import React, { useState } from 'react'
 import { useTranslation } from 'react-i18next'
-import {
-  Box,
-  Heading,
-  Table,
-  Input,
-  Text,
-  Button,
-  DialogRoot,
-  DialogContent,
-  DialogHeader,
-  DialogTitle,
-  DialogBody,
-  DialogFooter,
-  DialogActionTrigger,
-  Grid,
-  VStack,
-  HStack,
-  Badge,
-  Progress,
-} from '@chakra-ui/react'
-import { useGetSystemStatsV2Query, useGetUserStatsQuery } from '../../__data__/api/api'
+import { useNavigate } from 'react-router-dom'
+import { Box, Heading, Table, Input, Text, Button } from '@chakra-ui/react'
+import { useGetSystemStatsV2Query } from '../../__data__/api/api'
 import type { ActiveParticipant } from '../../types/challenge'
 import { LoadingSpinner } from '../../components/LoadingSpinner'
 import { ErrorAlert } from '../../components/ErrorAlert'
 import { EmptyState } from '../../components/EmptyState'
+import { URLs } from '../../__data__/urls'
 
 export const UsersPage: React.FC = () => {
   const { t } = useTranslation()
+  const navigate = useNavigate()
   const { data: stats, isLoading, error, refetch } = useGetSystemStatsV2Query(undefined, {
     pollingInterval: 10000,
   })
   const [searchQuery, setSearchQuery] = useState('')
-  const [selectedUserId, setSelectedUserId] = useState<string | null>(null)
 
   if (isLoading) {
     return <LoadingSpinner message={t('challenge.admin.users.loading')} />
@@ -108,7 +91,7 @@ export const UsersPage: React.FC = () => {
                       size="sm"
                       variant="ghost"
                       colorPalette="teal"
-                      onClick={() => setSelectedUserId(user.userId)}
+                      onClick={() => navigate(URLs.userStats(user.userId))}
                     >
                       {t('challenge.admin.users.button.stats')}
                     </Button>
@@ -120,167 +103,6 @@ export const UsersPage: React.FC = () => {
         </Box>
       )}
 
-      {/* User Stats Modal */}
-      <UserStatsModal
-        userId={selectedUserId}
-        isOpen={!!selectedUserId}
-        onClose={() => setSelectedUserId(null)}
-      />
     </Box>
   )
 }
-
-interface UserStatsModalProps {
-  userId: string | null
-  isOpen: boolean
-  onClose: () => void
-}
-
-const UserStatsModal: React.FC<UserStatsModalProps> = ({ userId, isOpen, onClose }) => {
-  const { t } = useTranslation()
-  const { data: stats, isLoading } = useGetUserStatsQuery(userId!, {
-    skip: !userId,
-  })
-
-  return (
-    <DialogRoot open={isOpen} onOpenChange={(e) => !e.open && onClose()} size="xl">
-      <DialogContent>
-        <DialogHeader>
-          <DialogTitle>{t('challenge.admin.users.stats.title')}</DialogTitle>
-        </DialogHeader>
-        <DialogBody>
-          {isLoading ? (
-            <LoadingSpinner message={t('challenge.admin.users.stats.loading')} />
-          ) : !stats ? (
-            <Text color="gray.600">{t('challenge.admin.users.stats.no.data')}</Text>
-          ) : (
-            <VStack gap={6} align="stretch">
-              {/* Overview */}
-              <Grid templateColumns="repeat(auto-fit, minmax(150px, 1fr))" gap={4}>
-                <Box>
-                  <Text fontSize="sm" color="gray.600">
-                    {t('challenge.admin.users.stats.completed')}
-                  </Text>
-                  <Text fontSize="2xl" fontWeight="bold" color="green.600">
-                    {stats.completedTasks}
-                  </Text>
-                </Box>
-                <Box>
-                  <Text fontSize="sm" color="gray.600">
-                    {t('challenge.admin.users.stats.total.submissions')}
-                  </Text>
-                  <Text fontSize="2xl" fontWeight="bold" color="blue.600">
-                    {stats.totalSubmissions}
-                  </Text>
-                </Box>
-                <Box>
-                  <Text fontSize="sm" color="gray.600">
-                    {t('challenge.admin.users.stats.in.progress')}
-                  </Text>
-                  <Text fontSize="2xl" fontWeight="bold" color="orange.600">
-                    {stats.inProgressTasks}
-                  </Text>
-                </Box>
-                <Box>
-                  <Text fontSize="sm" color="gray.600">
-                    {t('challenge.admin.users.stats.needs.revision')}
-                  </Text>
-                  <Text fontSize="2xl" fontWeight="bold" color="red.600">
-                    {stats.needsRevisionTasks}
-                  </Text>
-                </Box>
-              </Grid>
-
-              {/* Chains Progress */}
-              {stats.chainStats.length > 0 && (
-                <Box>
-                  <Text fontWeight="bold" mb={3}>
-                    {t('challenge.admin.users.stats.chains.progress')}
-                  </Text>
-                  <VStack gap={3} align="stretch">
-                    {stats.chainStats.map((chain) => (
-                      <Box key={chain.chainId}>
-                        <HStack justify="space-between" mb={1}>
-                          <Text fontSize="sm" fontWeight="medium">
-                            {chain.chainName}
-                          </Text>
-                          <Text fontSize="sm" color="gray.600">
-                            {chain.completedTasks} / {chain.totalTasks}
-                          </Text>
-                        </HStack>
-                        <Progress.Root value={chain.progress} colorPalette="teal" size="sm">
-                          <Progress.Track>
-                            <Progress.Range />
-                          </Progress.Track>
-                        </Progress.Root>
-                      </Box>
-                    ))}
-                  </VStack>
-                </Box>
-              )}
-
-              {/* Task Stats */}
-              {stats.taskStats.length > 0 && (
-                <Box>
-                  <Text fontWeight="bold" mb={3}>
-                    {t('challenge.admin.users.stats.tasks')}
-                  </Text>
-                  <VStack gap={2} align="stretch" maxH="300px" overflowY="auto">
-                    {stats.taskStats.map((taskStat) => {
-                      const getBadgeColor = () => {
-                        if (taskStat.status === 'completed') return 'green'
-                        if (taskStat.status === 'needs_revision') return 'red'
-                        return 'gray'
-                      }
-                      
-                      return (
-                        <Box
-                          key={taskStat.taskId}
-                          p={3}
-                          bg="gray.50"
-                          borderRadius="md"
-                          borderWidth="1px"
-                          borderColor="gray.200"
-                        >
-                          <HStack justify="space-between" mb={1}>
-                            <Text fontSize="sm" fontWeight="medium">
-                              {taskStat.taskTitle}
-                            </Text>
-                            <Badge colorPalette={getBadgeColor()}>
-                              {t(`challenge.admin.users.stats.status.${taskStat.status}`)}
-                            </Badge>
-                          </HStack>
-                          <Text fontSize="xs" color="gray.600">
-                            {t('challenge.admin.users.stats.attempts')} {taskStat.totalAttempts}
-                          </Text>
-                        </Box>
-                      )
-                    })}
-                  </VStack>
-                </Box>
-              )}
-
-              {/* Average Check Time */}
-              <Box p={3} bg="purple.50" borderRadius="md">
-                <Text fontSize="sm" color="gray.700" mb={1}>
-                  {t('challenge.admin.users.stats.avg.check.time')}
-                </Text>
-                <Text fontSize="lg" fontWeight="bold" color="purple.700">
-                  {t('challenge.admin.dashboard.check.time.value', { time: (stats.averageCheckTimeMs / 1000).toFixed(2) })}
-                </Text>
-              </Box>
-            </VStack>
-          )}
-        </DialogBody>
-        <DialogFooter>
-          <DialogActionTrigger asChild>
-            <Button variant="outline" onClick={onClose}>
-              Закрыть
-            </Button>
-          </DialogActionTrigger>
-        </DialogFooter>
-      </DialogContent>
-    </DialogRoot>
-  )
-}
-