feat: chat fixes, header cleanup, scrollbar, UI improvements

- chat: fix create_direct endpoint (was /chats/ → /chats/create_direct/ with user_id)
- chat: fix backend NotSupportedError — remove select_for_update()+distinct() combo
- chat: normalize chat objects (participant_id from other_participant.id)
- chat: enrich new chats with contact data so contacts section updates correctly
- chat: sendMessage — JSON when no file, FormData only with attachment
- chat: show send errors in UI instead of silent catch
- header: hide search, language, contacts, workspaces, account buttons
- theme: thin custom scrollbar (6px, theme-aware light/dark)
- settings: always high contrast, vertical nav only, purple default, Inter font
- settings-button: replaced gear icon with dark/light toggle + fullscreen button

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/apps/chat/services.py

@@ -37,14 +37,19 @@ class ChatService:
         
         with transaction.atomic():
             # Ищем существующий чат между пользователями
-            # Используем select_for_update для блокировки найденных записей
-            existing_chat = Chat.objects.select_for_update().filter(
+            # select_for_update() несовместим с distinct() в PostgreSQL,
+            # поэтому сначала ищем без блокировки, затем лочим найденный объект
+            existing_chat = Chat.objects.filter(
                 chat_type='direct',
                 participants__user=users[0]
             ).filter(
                 participants__user=users[1]
             ).distinct().first()
 
+            if existing_chat:
+                # Лочим конкретную запись для безопасного возврата
+                existing_chat = Chat.objects.select_for_update().get(pk=existing_chat.pk)
+            
             if existing_chat:
                 return existing_chat, False
             

front_minimal/src/app/auth/jwt/sign-in/layout.jsx

@@ -7,7 +7,14 @@ import { GuestGuard } from 'src/auth/guard';
 export default function Layout({ children }) {
   return (
     <GuestGuard>
-      <AuthSplitLayout section={{ title: 'Hi, Welcome back' }}>{children}</AuthSplitLayout>
+      <AuthSplitLayout
+        section={{
+          title: 'Добро пожаловать',
+          subtitle: 'Платформа для онлайн-обучения и работы с репетиторами.',
+        }}
+      >
+        {children}
+      </AuthSplitLayout>
     </GuestGuard>
   );
 }

front_minimal/src/app/dashboard/page.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useState, useEffect } from 'react';
 

front_minimal/src/app/dashboard/post/[title]/error.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Button from '@mui/material/Button';
 

front_minimal/src/app/dashboard/product/[id]/error.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Button from '@mui/material/Button';
 

front_minimal/src/app/dashboard/product/[id]/loading.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { DashboardContent } from 'src/layouts/dashboard';
 

front_minimal/src/app/post/[title]/error.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Button from '@mui/material/Button';
 import Container from '@mui/material/Container';

front_minimal/src/app/product/[id]/error.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Button from '@mui/material/Button';
 import Container from '@mui/material/Container';

front_minimal/src/app/product/[id]/loading.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Container from '@mui/material/Container';
 

front_minimal/src/auth/context/amplify/action.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import {
   signIn as _signIn,

front_minimal/src/auth/context/amplify/auth-provider.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { Amplify } from 'aws-amplify';
 import { useMemo, useEffect, useCallback } from 'react';

front_minimal/src/auth/context/auth-context.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { createContext } from 'react';
 

front_minimal/src/auth/context/auth0/auth-provider.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useAuth0, Auth0Provider } from '@auth0/auth0-react';
 import { useMemo, useState, useEffect, useCallback } from 'react';

front_minimal/src/auth/context/firebase/action.js

@@ -1,4 +1,3 @@
-'use client';
 
 import { doc, setDoc, collection } from 'firebase/firestore';
 import {

front_minimal/src/auth/context/firebase/auth-provider.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { doc, getDoc } from 'firebase/firestore';
 import { onAuthStateChanged } from 'firebase/auth';

front_minimal/src/auth/context/jwt/action.js

@@ -1,4 +1,3 @@
-'use client';
 
 import axios, { endpoints } from 'src/utils/axios';
 

front_minimal/src/auth/context/jwt/auth-provider.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useMemo, useEffect, useCallback } from 'react';
 import { useSetState } from 'src/hooks/use-set-state';

front_minimal/src/auth/context/supabase/action.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { paths } from 'src/routes/paths';
 

front_minimal/src/auth/context/supabase/auth-provider.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useMemo, useEffect, useCallback } from 'react';
 

front_minimal/src/auth/guard/auth-guard.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useState, useEffect, useCallback } from 'react';
 
@@ -10,6 +9,21 @@ import { CONFIG } from 'src/config-global';
 import { SplashScreen } from 'src/components/loading-screen';
 
 import { useAuthContext } from '../hooks';
+import { STORAGE_KEY } from '../context/jwt/constant';
+import { isValidToken } from '../context/jwt/utils';
+
+// ----------------------------------------------------------------------
+
+// Synchronously check if there's a valid token in localStorage
+// to avoid showing SplashScreen on every load when user is already authenticated
+function hasValidStoredToken() {
+  try {
+    const token = localStorage.getItem(STORAGE_KEY);
+    return token ? isValidToken(token) : false;
+  } catch {
+    return false;
+  }
+}
 
 // ----------------------------------------------------------------------
 
@@ -22,7 +36,8 @@ export function AuthGuard({ children }) {
 
   const { authenticated, loading } = useAuthContext();
 
-  const [isChecking, setIsChecking] = useState(true);
+  // Skip splash if we already have a valid token — avoids flash on every page load
+  const [isChecking, setIsChecking] = useState(() => !hasValidStoredToken());
 
   const createQueryString = useCallback(
     (name, value) => {
@@ -40,18 +55,8 @@ export function AuthGuard({ children }) {
     }
 
     if (!authenticated) {
-      const { method } = CONFIG.auth;
-
-      const signInPath = {
-        jwt: paths.auth.jwt.signIn,
-        auth0: paths.auth.auth0.signIn,
-        amplify: paths.auth.amplify.signIn,
-        firebase: paths.auth.firebase.signIn,
-        supabase: paths.auth.supabase.signIn,
-      }[method];
-
+      const signInPath = paths.auth.jwt.signIn;
       const href = `${signInPath}?${createQueryString('returnTo', pathname)}`;
-
       router.replace(href);
       return;
     }

front_minimal/src/auth/guard/guest-guard.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useState, useEffect } from 'react';
 

front_minimal/src/auth/guard/role-based-guard.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { m } from 'framer-motion';
 

front_minimal/src/auth/hooks/use-auth-context.js

@@ -1,4 +1,3 @@
-'use client';
 
 import { useContext } from 'react';
 

front_minimal/src/components/animate/animate-border.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { m } from 'framer-motion';
 import { useRef, useState, useEffect } from 'react';

front_minimal/src/components/animate/motion-lazy.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { LazyMotion } from 'framer-motion';
 

front_minimal/src/components/animate/scroll-progress/use-scroll-progress.js

@@ -1,4 +1,3 @@
-'use client';
 
 import { useRef, useMemo } from 'react';
 import { useScroll } from 'framer-motion';

front_minimal/src/components/iconify/iconify.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { forwardRef } from 'react';
 import { Icon, disableCache } from '@iconify/react';

front_minimal/src/components/label/label.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { forwardRef } from 'react';
 

front_minimal/src/components/label/styles.js

@@ -1,4 +1,3 @@
-'use client';
 
 import Box from '@mui/material/Box';
 import { styled } from '@mui/material/styles';

front_minimal/src/components/loading-screen/loading-screen.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Box from '@mui/material/Box';
 import Portal from '@mui/material/Portal';

front_minimal/src/components/loading-screen/splash-screen.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Box from '@mui/material/Box';
 import Portal from '@mui/material/Portal';

front_minimal/src/components/logo/logo.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useId, forwardRef } from 'react';
 

front_minimal/src/components/progress-bar/progress-bar.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import './styles.css';
 

front_minimal/src/components/settings/config-settings.js

@@ -7,10 +7,10 @@ export const STORAGE_KEY = 'app-settings';
 export const defaultSettings = {
   colorScheme: 'light',
   direction: 'ltr',
-  contrast: 'default',
+  contrast: 'hight',
   navLayout: 'vertical',
-  primaryColor: 'default',
+  primaryColor: 'purple',
   navColor: 'integrate',
-  compactLayout: true,
-  fontFamily: defaultFont,
+  compactLayout: false,
+  fontFamily: 'Inter',
 };

front_minimal/src/components/settings/context/index.js

@@ -1,3 +1,5 @@
+export * from './settings-context';
+
 export * from './settings-provider';
 
 export * from './use-settings-context';

front_minimal/src/components/settings/context/settings-context.js

@@ -0,0 +1,5 @@
+import { createContext } from 'react';
+
+export const SettingsContext = createContext(undefined);
+
+export const SettingsConsumer = SettingsContext.Consumer;

front_minimal/src/components/settings/context/settings-provider.jsx

@@ -1,17 +1,10 @@
-'use client';
-
-import { useMemo, useState, useCallback, createContext } from 'react';
+import { useMemo, useState, useCallback } from 'react';
 
 import { useCookies } from 'src/hooks/use-cookies';
 import { useLocalStorage } from 'src/hooks/use-local-storage';
 
 import { STORAGE_KEY, defaultSettings } from '../config-settings';
-
-// ----------------------------------------------------------------------
-
-export const SettingsContext = createContext(undefined);
-
-export const SettingsConsumer = SettingsContext.Consumer;
+import { SettingsContext } from './settings-context';
 
 // ----------------------------------------------------------------------
 

front_minimal/src/components/settings/context/use-settings-context.js

@@ -1,8 +1,7 @@
-'use client';
 
 import { useContext } from 'react';
 
-import { SettingsContext } from './settings-provider';
+import { SettingsContext } from './settings-context';
 
 // ----------------------------------------------------------------------
 

front_minimal/src/components/settings/drawer/font-options.jsx

@@ -11,7 +11,7 @@ import { SvgColor } from '../../svg-color';
 
 export function FontOptions({ value, options, onClickOption }) {
   return (
-    <Block title="Font">
+    <Block title="Шрифт">
       <Box component="ul" gap={1.5} display="grid" gridTemplateColumns="repeat(2, 1fr)">
         {options.map((option) => {
           const selected = value === option;

front_minimal/src/components/settings/drawer/fullscreen-button.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useState, useCallback } from 'react';
 

front_minimal/src/components/settings/drawer/nav-options.jsx

@@ -40,7 +40,7 @@ export function NavOptions({ options, value, onClickOption, hideNavColor, hideNa
   const renderLayout = (
     <div>
       <Box component="span" sx={labelStyles}>
-        Layout
+        Расположение
       </Box>
       <Box gap={1.5} display="flex" sx={{ mt: 1.5 }}>
         {options.layouts.map((option) => (
@@ -58,7 +58,7 @@ export function NavOptions({ options, value, onClickOption, hideNavColor, hideNa
   const renderColor = (
     <div>
       <Box component="span" sx={labelStyles}>
-        Color
+        Цвет
       </Box>
       <Box gap={1.5} display="flex" sx={{ mt: 1.5 }}>
         {options.colors.map((option) => (
@@ -74,7 +74,7 @@ export function NavOptions({ options, value, onClickOption, hideNavColor, hideNa
   );
 
   return (
-    <Block title="Nav" tooltip="Dashboard only" sx={{ ...cssVars, gap: 2.5 }}>
+    <Block title="Навигация" sx={{ ...cssVars, gap: 2.5 }}>
       {!hideNavLayout && renderLayout}
       {!hideNavColor && renderColor}
     </Block>
@@ -247,12 +247,11 @@ export function ColorOption({ option, selected, sx, ...other }) {
         component="span"
         sx={{
           lineHeight: '18px',
-          textTransform: 'capitalize',
           fontWeight: 'fontWeightSemiBold',
           fontSize: (theme) => theme.typography.pxToRem(13),
         }}
       >
-        {option}
+        {{ integrate: 'Встроен', apparent: 'Явный' }[option] ?? option}
       </Box>
     </ButtonBase>
   );

front_minimal/src/components/settings/drawer/presets-options.jsx

@@ -11,7 +11,7 @@ import { SvgColor } from '../../svg-color';
 
 export function PresetsOptions({ value, options, onClickOption }) {
   return (
-    <Block title="Presets">
+    <Block title="Цветовая схема">
       <Box component="ul" gap={1.5} display="grid" gridTemplateColumns="repeat(3, 1fr)">
         {options.map((option) => {
           const selected = value === option.name;

front_minimal/src/components/settings/drawer/settings-drawer.jsx

@@ -1,195 +1,13 @@
-'use client';
 
-import Box from '@mui/material/Box';
-import Stack from '@mui/material/Stack';
-import Badge from '@mui/material/Badge';
-import Tooltip from '@mui/material/Tooltip';
-import IconButton from '@mui/material/IconButton';
-import Typography from '@mui/material/Typography';
 import Drawer, { drawerClasses } from '@mui/material/Drawer';
 import { useTheme, useColorScheme } from '@mui/material/styles';
 
-import COLORS from 'src/theme/core/colors.json';
 import { paper, varAlpha } from 'src/theme/styles';
-import { defaultFont } from 'src/theme/core/typography';
-import PRIMARY_COLOR from 'src/theme/with-settings/primary-color.json';
 
-import { Iconify } from '../../iconify';
-import { BaseOption } from './base-option';
-import { NavOptions } from './nav-options';
-import { Scrollbar } from '../../scrollbar';
-import { FontOptions } from './font-options';
 import { useSettingsContext } from '../context';
-import { PresetsOptions } from './presets-options';
-import { defaultSettings } from '../config-settings';
-import { FullScreenButton } from './fullscreen-button';
 
-// ----------------------------------------------------------------------
-
-export function SettingsDrawer({
-  sx,
-  hideFont,
-  hideCompact,
-  hidePresets,
-  hideNavColor,
-  hideContrast,
-  hideNavLayout,
-  hideDirection,
-  hideColorScheme,
-}) {
-  const theme = useTheme();
-
-  const settings = useSettingsContext();
-
-  const { mode, setMode } = useColorScheme();
-
-  const renderHead = (
-    <Box display="flex" alignItems="center" sx={{ py: 2, pr: 1, pl: 2.5 }}>
-      <Typography variant="h6" sx={{ flexGrow: 1 }}>
-        Settings
-      </Typography>
-
-      <FullScreenButton />
-
-      <Tooltip title="Reset">
-        <IconButton
-          onClick={() => {
-            settings.onReset();
-            setMode(defaultSettings.colorScheme);
-          }}
-        >
-          <Badge color="error" variant="dot" invisible={!settings.canReset}>
-            <Iconify icon="solar:restart-bold" />
-          </Badge>
-        </IconButton>
-      </Tooltip>
-
-      <Tooltip title="Close">
-        <IconButton onClick={settings.onCloseDrawer}>
-          <Iconify icon="mingcute:close-line" />
-        </IconButton>
-      </Tooltip>
-    </Box>
-  );
-
-  const renderMode = (
-    <BaseOption
-      label="Dark mode"
-      icon="moon"
-      selected={settings.colorScheme === 'dark'}
-      onClick={() => {
-        settings.onUpdateField('colorScheme', mode === 'light' ? 'dark' : 'light');
-        setMode(mode === 'light' ? 'dark' : 'light');
-      }}
-    />
-  );
-
-  const renderContrast = (
-    <BaseOption
-      label="Contrast"
-      icon="contrast"
-      selected={settings.contrast === 'hight'}
-      onClick={() =>
-        settings.onUpdateField('contrast', settings.contrast === 'default' ? 'hight' : 'default')
-      }
-    />
-  );
-
-  const renderRTL = (
-    <BaseOption
-      label="Right to left"
-      icon="align-right"
-      selected={settings.direction === 'rtl'}
-      onClick={() =>
-        settings.onUpdateField('direction', settings.direction === 'ltr' ? 'rtl' : 'ltr')
-      }
-    />
-  );
-
-  const renderCompact = (
-    <BaseOption
-      tooltip="Dashboard only and available at large resolutions > 1600px (xl)"
-      label="Compact"
-      icon="autofit-width"
-      selected={settings.compactLayout}
-      onClick={() => settings.onUpdateField('compactLayout', !settings.compactLayout)}
-    />
-  );
-
-  const renderPresets = (
-    <PresetsOptions
-      value={settings.primaryColor}
-      onClickOption={(newValue) => settings.onUpdateField('primaryColor', newValue)}
-      options={[
-        { name: 'default', value: COLORS.primary.main },
-        { name: 'cyan', value: PRIMARY_COLOR.cyan.main },
-        { name: 'purple', value: PRIMARY_COLOR.purple.main },
-        { name: 'blue', value: PRIMARY_COLOR.blue.main },
-        { name: 'orange', value: PRIMARY_COLOR.orange.main },
-        { name: 'red', value: PRIMARY_COLOR.red.main },
-      ]}
-    />
-  );
-
-  const renderNav = (
-    <NavOptions
-      value={{
-        color: settings.navColor,
-        layout: settings.navLayout,
-      }}
-      onClickOption={{
-        color: (newValue) => settings.onUpdateField('navColor', newValue),
-        layout: (newValue) => settings.onUpdateField('navLayout', newValue),
-      }}
-      options={{
-        colors: ['integrate', 'apparent'],
-        layouts: ['vertical', 'horizontal', 'mini'],
-      }}
-      hideNavColor={hideNavColor}
-      hideNavLayout={hideNavLayout}
-    />
-  );
-
-  const renderFont = (
-    <FontOptions
-      value={settings.fontFamily}
-      onClickOption={(newValue) => settings.onUpdateField('fontFamily', newValue)}
-      options={[defaultFont, 'Inter', 'DM Sans', 'Nunito Sans']}
-    />
-  );
-
-  return (
-    <Drawer
-      anchor="right"
-      open={settings.openDrawer}
-      onClose={settings.onCloseDrawer}
-      slotProps={{ backdrop: { invisible: true } }}
-      sx={{
-        [`& .${drawerClasses.paper}`]: {
-          ...paper({
-            theme,
-            color: varAlpha(theme.vars.palette.background.defaultChannel, 0.9),
-          }),
-          width: 360,
-          ...sx,
-        },
-      }}
-    >
-      {renderHead}
-
-      <Scrollbar>
-        <Stack spacing={6} sx={{ px: 2.5, pb: 5 }}>
-          <Box gap={2} display="grid" gridTemplateColumns="repeat(2, 1fr)">
-            {!hideColorScheme && renderMode}
-            {!hideContrast && renderContrast}
-            {!hideDirection && renderRTL}
-            {!hideCompact && renderCompact}
-          </Box>
-          {!(hideNavLayout && hideNavColor) && renderNav}
-          {!hidePresets && renderPresets}
-          {!hideFont && renderFont}
-        </Stack>
-      </Scrollbar>
-    </Drawer>
-  );
+// Drawer больше не нужен — все настройки зафиксированы.
+// Оставляем пустой экспорт для совместимости.
+export function SettingsDrawer() {
+  return null;
 }

front_minimal/src/components/snackbar/snackbar.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Portal from '@mui/material/Portal';
 

front_minimal/src/components/walktour/walktour-tooltip.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Box from '@mui/material/Box';
 import Button from '@mui/material/Button';

front_minimal/src/hooks/use-boolean.js

@@ -1,4 +1,3 @@
-'use client';
 
 import { useMemo, useState, useCallback } from 'react';
 

front_minimal/src/hooks/use-local-storage.js

@@ -6,24 +6,17 @@ import { localStorageGetItem } from 'src/utils/storage-available';
 // ----------------------------------------------------------------------
 
 export function useLocalStorage(key, initialState) {
-  const [state, set] = useState(initialState);
-
   const multiValue = initialState && typeof initialState === 'object';
 
+  // Read localStorage synchronously on first render — no useEffect, no flash
+  const [state, set] = useState(() => {
+    const stored = getStorage(key);
+    if (!stored) return initialState;
+    return multiValue ? { ...initialState, ...stored } : stored;
+  });
+
   const canReset = !isEqual(state, initialState);
 
-  useEffect(() => {
-    const restoredValue = getStorage(key);
-
-    if (restoredValue) {
-      if (multiValue) {
-        set((prevValue) => ({ ...prevValue, ...restoredValue }));
-      } else {
-        set(restoredValue);
-      }
-    }
-  }, [key, multiValue]);
-
   const setState = useCallback(
     (updateState) => {
       if (multiValue) {

front_minimal/src/hooks/use-scroll-offset-top.js

@@ -1,4 +1,3 @@
-'use client';
 
 import { useScroll, useMotionValueEvent } from 'framer-motion';
 import { useRef, useMemo, useState, useCallback } from 'react';

front_minimal/src/layouts/auth-centered/layout.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Alert from '@mui/material/Alert';
 

front_minimal/src/layouts/auth-split/layout.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Alert from '@mui/material/Alert';
 
@@ -38,6 +37,7 @@ export function AuthSplitLayout({ sx, section, children }) {
             searchbar: false,
             workspaces: false,
             menuButton: false,
+            helpLink: false,
             localization: false,
             notifications: false,
           }}
@@ -77,26 +77,6 @@ export function AuthSplitLayout({ sx, section, children }) {
               path: paths.auth.jwt.signIn,
               icon: `${CONFIG.site.basePath}/assets/icons/platforms/ic-jwt.svg`,
             },
-            {
-              label: 'Firebase',
-              path: paths.auth.firebase.signIn,
-              icon: `${CONFIG.site.basePath}/assets/icons/platforms/ic-firebase.svg`,
-            },
-            {
-              label: 'Amplify',
-              path: paths.auth.amplify.signIn,
-              icon: `${CONFIG.site.basePath}/assets/icons/platforms/ic-amplify.svg`,
-            },
-            {
-              label: 'Auth0',
-              path: paths.auth.auth0.signIn,
-              icon: `${CONFIG.site.basePath}/assets/icons/platforms/ic-auth0.svg`,
-            },
-            {
-              label: 'Supabase',
-              path: paths.auth.supabase.signIn,
-              icon: `${CONFIG.site.basePath}/assets/icons/platforms/ic-supabase.svg`,
-            },
           ]}
         />
         <Content layoutQuery={layoutQuery}>{children}</Content>

front_minimal/src/layouts/auth-split/section.jsx

@@ -16,9 +16,9 @@ export function Section({
   method,
   layoutQuery,
   methods,
-  title = 'Manage the job',
+  title = 'Добро пожаловать',
   imgUrl = `${CONFIG.site.basePath}/assets/illustrations/illustration-dashboard.webp`,
-  subtitle = 'More effectively with optimized workflows.',
+  subtitle = 'Платформа для онлайн-обучения и работы с репетиторами.',
   ...other
 }) {
   const theme = useTheme();

front_minimal/src/layouts/components/account-drawer.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useState, useCallback } from 'react';
 

front_minimal/src/layouts/components/contacts-popover.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { m } from 'framer-motion';
 

front_minimal/src/layouts/components/language-popover.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { m } from 'framer-motion';
 import { useCallback } from 'react';

front_minimal/src/layouts/components/nav-upgrade.jsx

@@ -36,9 +36,9 @@ export function NavUpgrade({ sx, ...other }) {
   const [sub, setSub] = useState(undefined); // undefined = loading, null = no sub
 
   useEffect(() => {
-    if (!user) return;
+    if (!user?.id) return;
     fetchActiveSubscription().then(setSub);
-  }, [user]);
+  }, [user?.id]);
 
   const displayName = user
     ? `${user.first_name || ''} ${user.last_name || ''}`.trim() || user.email

front_minimal/src/layouts/components/notifications-drawer/index.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { m } from 'framer-motion';
 import { useState, useEffect, useCallback } from 'react';

front_minimal/src/layouts/components/searchbar/index.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useState, useCallback } from 'react';
 import parse from 'autosuggest-highlight/parse';

front_minimal/src/layouts/components/settings-button.jsx

@@ -1,45 +1,87 @@
-'use client';
 
-import { m } from 'framer-motion';
+import { useState, useCallback } from 'react';
 
-import Badge from '@mui/material/Badge';
-import SvgIcon from '@mui/material/SvgIcon';
+import Tooltip from '@mui/material/Tooltip';
 import IconButton from '@mui/material/IconButton';
+import { useColorScheme } from '@mui/material/styles';
+
+import { CONFIG } from 'src/config-global';
+import { Iconify } from 'src/components/iconify';
+import { SvgColor, svgColorClasses } from 'src/components/svg-color';
 
 import { useSettingsContext } from 'src/components/settings/context';
 
 // ----------------------------------------------------------------------
 
-export function SettingsButton({ sx, ...other }) {
-  const settings = useSettingsContext();
+function FullScreenButton() {
+  const [fullscreen, setFullscreen] = useState(false);
+
+  const onToggle = useCallback(() => {
+    if (!document.fullscreenElement) {
+      document.documentElement.requestFullscreen();
+      setFullscreen(true);
+    } else if (document.exitFullscreen) {
+      document.exitFullscreen();
+      setFullscreen(false);
+    }
+  }, []);
 
   return (
+    <Tooltip title={fullscreen ? 'Выйти из полноэкранного режима' : 'Полный экран'}>
       <IconButton
-      aria-label="settings"
-      onClick={settings.onToggleDrawer}
+        onClick={onToggle}
+        sx={{
+          p: 0,
+          width: 40,
+          height: 40,
+          [`& .${svgColorClasses.root}`]: {
+            background: (theme) =>
+              `linear-gradient(135deg, ${theme.vars.palette.grey[500]} 0%, ${theme.vars.palette.grey[600]} 100%)`,
+            ...(fullscreen && {
+              background: (theme) =>
+                `linear-gradient(135deg, ${theme.vars.palette.primary.light} 0%, ${theme.vars.palette.primary.main} 100%)`,
+            }),
+          },
+        }}
+      >
+        <SvgColor
+          src={`${CONFIG.site.basePath}/assets/icons/setting/${fullscreen ? 'ic-exit-full-screen' : 'ic-full-screen'}.svg`}
+          sx={{ width: 18, height: 18 }}
+        />
+      </IconButton>
+    </Tooltip>
+  );
+}
+
+// ----------------------------------------------------------------------
+
+export function SettingsButton({ sx, ...other }) {
+  const settings = useSettingsContext();
+  const { mode, setMode } = useColorScheme();
+
+  const isDark = mode === 'dark' || settings.colorScheme === 'dark';
+
+  const handleToggle = () => {
+    const next = isDark ? 'light' : 'dark';
+    settings.onUpdateField('colorScheme', next);
+    setMode(next);
+  };
+
+  return (
+    <>
+      <FullScreenButton />
+      <Tooltip title={isDark ? 'Светлая тема' : 'Тёмная тема'}>
+        <IconButton
+          onClick={handleToggle}
           sx={{ p: 0, width: 40, height: 40, ...sx }}
           {...other}
         >
-      <Badge color="error" variant="dot" invisible={!settings.canReset}>
-        <SvgIcon
-          component={m.svg}
-          animate={{ rotate: 360 }}
-          transition={{ duration: 8, ease: 'linear', repeat: Infinity }}
-        >
-          {/* https://icon-sets.iconify.design/solar/settings-bold-duotone/ */}
-          <path
-            fill="currentColor"
-            fillRule="evenodd"
-            d="M14.279 2.152C13.909 2 13.439 2 12.5 2s-1.408 0-1.779.152a2.008 2.008 0 0 0-1.09 1.083c-.094.223-.13.484-.145.863a1.615 1.615 0 0 1-.796 1.353a1.64 1.64 0 0 1-1.579.008c-.338-.178-.583-.276-.825-.308a2.026 2.026 0 0 0-1.49.396c-.318.242-.553.646-1.022 1.453c-.47.807-.704 1.21-.757 1.605c-.07.526.074 1.058.4 1.479c.148.192.357.353.68.555c.477.297.783.803.783 1.361c0 .558-.306 1.064-.782 1.36c-.324.203-.533.364-.682.556a1.99 1.99 0 0 0-.399 1.479c.053.394.287.798.757 1.605c.47.807.704 1.21 1.022 1.453c.424.323.96.465 1.49.396c.242-.032.487-.13.825-.308a1.64 1.64 0 0 1 1.58.008c.486.28.774.795.795 1.353c.015.38.051.64.145.863c.204.49.596.88 1.09 1.083c.37.152.84.152 1.779.152s1.409 0 1.779-.152a2.008 2.008 0 0 0 1.09-1.083c.094-.223.13-.483.145-.863c.02-.558.309-1.074.796-1.353a1.64 1.64 0 0 1 1.579-.008c.338.178.583.276.825.308c.53.07 1.066-.073 1.49-.396c.318-.242.553-.646 1.022-1.453c.47-.807.704-1.21.757-1.605a1.99 1.99 0 0 0-.4-1.479c-.148-.192-.357-.353-.68-.555c-.477-.297-.783-.803-.783-1.361c0-.558.306-1.064.782-1.36c.324-.203.533-.364.682-.556a1.99 1.99 0 0 0 .399-1.479c-.053-.394-.287-.798-.757-1.605c-.47-.807-.704-1.21-1.022-1.453a2.026 2.026 0 0 0-1.49-.396c-.242.032-.487.13-.825.308a1.64 1.64 0 0 1-1.58-.008a1.615 1.615 0 0 1-.795-1.353c-.015-.38-.051-.64-.145-.863a2.007 2.007 0 0 0-1.09-1.083"
-            clipRule="evenodd"
-            opacity="0.5"
+          <Iconify
+            icon={isDark ? 'solar:sun-bold-duotone' : 'solar:moon-bold-duotone'}
+            width={22}
           />
-          <path
-            fill="currentColor"
-            d="M15.523 12c0 1.657-1.354 3-3.023 3c-1.67 0-3.023-1.343-3.023-3S10.83 9 12.5 9c1.67 0 3.023 1.343 3.023 3"
-          />
-        </SvgIcon>
-      </Badge>
         </IconButton>
+      </Tooltip>
+    </>
   );
 }

front_minimal/src/layouts/components/workspaces-popover.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useState, useCallback } from 'react';
 

front_minimal/src/layouts/core/header-base.jsx

@@ -131,7 +131,7 @@ export function HeaderBase({
                   color="inherit"
                   sx={{ typography: 'subtitle2' }}
                 >
-                  Need help?
+                  Нужна помощь?
                 </Link>
               )}
 

front_minimal/src/layouts/core/layout-section.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Box from '@mui/material/Box';
 import GlobalStyles from '@mui/material/GlobalStyles';

front_minimal/src/layouts/dashboard/layout.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useMemo } from 'react';
 
@@ -42,14 +41,39 @@ export function DashboardLayout({ sx, children, data }) {
 
   const layoutQuery = 'lg';
 
-  const navData = data?.nav ?? getNavData(user?.role);
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  const navData = useMemo(() => data?.nav ?? getNavData(user?.role), [data?.nav, user?.role]);
 
   const isNavMini = settings.navLayout === 'mini';
-
-  const isNavHorizontal = settings.navLayout === 'horizontal';
-
+  const isNavHorizontal = false; // горизонтальная навигация отключена
   const isNavVertical = isNavMini || settings.navLayout === 'vertical';
 
+  const headerData = useMemo(
+    () => ({
+      nav: navData,
+      langs: allLangs,
+      account: _account,
+      contacts: _contacts,
+      workspaces: _workspaces,
+      notifications: _notifications,
+    }),
+    [navData]
+  );
+
+  const headerSlotsDisplay = useMemo(
+    () => ({
+      signIn: false,
+      purchase: false,
+      helpLink: false,
+      searchbar: false,
+      localization: false,
+      contacts: false,
+      workspaces: false,
+      account: false,
+    }),
+    []
+  );
+
   return (
     <>
       <NavMobile
@@ -68,19 +92,8 @@ export function DashboardLayout({ sx, children, data }) {
             layoutQuery={layoutQuery}
             disableElevation={isNavVertical}
             onOpenNav={mobileNavOpen.onTrue}
-            data={{
-              nav: navData,
-              langs: allLangs,
-              account: _account,
-              contacts: _contacts,
-              workspaces: _workspaces,
-              notifications: _notifications,
-            }}
-            slotsDisplay={{
-              signIn: false,
-              purchase: false,
-              helpLink: false,
-            }}
+            data={headerData}
+            slotsDisplay={headerSlotsDisplay}
             slots={{
               topArea: (
                 <Alert severity="info" sx={{ display: 'none', borderRadius: 0 }}>

front_minimal/src/layouts/dashboard/main.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Box from '@mui/material/Box';
 import { useTheme } from '@mui/material/styles';
@@ -6,8 +5,6 @@ import Container from '@mui/material/Container';
 
 import { layoutClasses } from 'src/layouts/classes';
 
-import { useSettingsContext } from 'src/components/settings';
-
 // ----------------------------------------------------------------------
 
 export function Main({ children, isNavHorizontal, sx, ...other }) {
@@ -36,14 +33,12 @@ export function Main({ children, isNavHorizontal, sx, ...other }) {
 export function DashboardContent({ sx, children, disablePadding, maxWidth = 'lg', ...other }) {
   const theme = useTheme();
 
-  const settings = useSettingsContext();
-
   const layoutQuery = 'lg';
 
   return (
     <Container
       className={layoutClasses.content}
-      maxWidth={settings.compactLayout ? maxWidth : false}
+      maxWidth={false}
       sx={{
         display: 'flex',
         flex: '1 1 auto',

front_minimal/src/layouts/main/layout.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Alert from '@mui/material/Alert';
 import { useTheme } from '@mui/material/styles';

front_minimal/src/layouts/simple/layout.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Alert from '@mui/material/Alert';
 

front_minimal/src/locales/all-langs.js

@@ -1,4 +1,3 @@
-'use client';
 
 // core (MUI)
 import {

front_minimal/src/locales/i18n-provider.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import i18next from 'i18next';
 import { useMemo } from 'react';

front_minimal/src/locales/localization-provider.jsx

@@ -1,6 +1,5 @@
 /* eslint-disable perfectionist/sort-imports */
 
-'use client';
 
 import 'dayjs/locale/en';
 import 'dayjs/locale/vi';

front_minimal/src/locales/use-locales.js

@@ -1,4 +1,3 @@
-'use client';
 
 import dayjs from 'dayjs';
 import { useCallback } from 'react';

front_minimal/src/main.jsx

@@ -1,6 +1,5 @@
 import './global.css';
 
-import { StrictMode } from 'react';
 import { createRoot } from 'react-dom/client';
 
 import App from './app';
@@ -9,8 +8,4 @@ import App from './app';
 
 const root = createRoot(document.getElementById('root'));
 
-root.render(
-  <StrictMode>
-    <App />
-  </StrictMode>
-);
+root.render(<App />);

front_minimal/src/routes/components/router-link.jsx

@@ -1 +1,7 @@
-export { Link as RouterLink } from 'react-router-dom';
+import { forwardRef } from 'react';
+import { Link } from 'react-router-dom';
+
+// Bridge component: MUI passes `href` prop, react-router-dom Link uses `to`
+export const RouterLink = forwardRef(({ href, to, ...other }, ref) => (
+  <Link ref={ref} to={to ?? href} {...other} />
+));

front_minimal/src/routes/hooks/use-search-params.js

@@ -1 +1,7 @@
-export { useSearchParams } from 'react-router-dom';
+import { useSearchParams as useRRSearchParams } from 'react-router-dom';
+
+// Next.js-compatible wrapper: returns searchParams object directly (not a tuple)
+export function useSearchParams() {
+  const [searchParams] = useRRSearchParams();
+  return searchParams;
+}

front_minimal/src/routes/sections.jsx

@@ -7,7 +7,7 @@ import { GuestGuard } from 'src/auth/guard/guest-guard';
 import { AuthSplitLayout } from 'src/layouts/auth-split';
 import { DashboardLayout } from 'src/layouts/dashboard';
 
-import { SplashScreen } from 'src/components/loading-screen';
+import { LoadingScreen } from 'src/components/loading-screen';
 
 // ----------------------------------------------------------------------
 // Auth
@@ -102,12 +102,8 @@ const Page404 = lazy(() =>
 
 // ----------------------------------------------------------------------
 
-function Loading() {
-  return <SplashScreen />;
-}
-
 function S({ children }) {
-  return <Suspense fallback={<Loading />}>{children}</Suspense>;
+  return <Suspense fallback={<LoadingScreen />}>{children}</Suspense>;
 }
 
 function DashboardLayoutWrapper() {

front_minimal/src/sections/_examples/extra/animate-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Tab from '@mui/material/Tab';
 import Box from '@mui/material/Box';

front_minimal/src/sections/_examples/extra/carousel-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { paths } from 'src/routes/paths';
 

front_minimal/src/sections/_examples/extra/chart-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { paths } from 'src/routes/paths';
 

front_minimal/src/sections/_examples/extra/dnd-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { paths } from 'src/routes/paths';
 

front_minimal/src/sections/_examples/extra/editor-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useState } from 'react';
 

front_minimal/src/sections/_examples/extra/form-validation-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useState } from 'react';
 

front_minimal/src/sections/_examples/extra/form-wizard-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { paths } from 'src/routes/paths';
 

front_minimal/src/sections/_examples/extra/image-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Box from '@mui/material/Box';
 import Stack from '@mui/material/Stack';

front_minimal/src/sections/_examples/extra/label-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Tooltip from '@mui/material/Tooltip';
 

front_minimal/src/sections/_examples/extra/lightbox-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useState } from 'react';
 

front_minimal/src/sections/_examples/extra/map-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import dynamic from 'next/dynamic';
 

front_minimal/src/sections/_examples/extra/markdown-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { paths } from 'src/routes/paths';
 

front_minimal/src/sections/_examples/extra/mega-menu-view/horizontal.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import AppBar from '@mui/material/AppBar';
 import Toolbar from '@mui/material/Toolbar';

front_minimal/src/sections/_examples/extra/mega-menu-view/mobile.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Box from '@mui/material/Box';
 import Button from '@mui/material/Button';

front_minimal/src/sections/_examples/extra/mega-menu-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { paths } from 'src/routes/paths';
 

front_minimal/src/sections/_examples/extra/multi-language-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import dayjs from 'dayjs';
 import { useState, useCallback } from 'react';

front_minimal/src/sections/_examples/extra/navigation-bar-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { paths } from 'src/routes/paths';
 

front_minimal/src/sections/_examples/extra/organizational-chart-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Stack from '@mui/material/Stack';
 import { useTheme } from '@mui/material/styles';

front_minimal/src/sections/_examples/extra/scroll-progress-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Box from '@mui/material/Box';
 import Paper from '@mui/material/Paper';

front_minimal/src/sections/_examples/extra/scrollbar-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Box from '@mui/material/Box';
 import Paper from '@mui/material/Paper';

front_minimal/src/sections/_examples/extra/snackbar-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Button from '@mui/material/Button';
 

front_minimal/src/sections/_examples/extra/upload-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useState, useCallback } from 'react';
 

front_minimal/src/sections/_examples/extra/utilities-view/copy-to-clipboard.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useState, useCallback } from 'react';
 

front_minimal/src/sections/_examples/extra/utilities-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { paths } from 'src/routes/paths';
 

front_minimal/src/sections/_examples/extra/walktour-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Box from '@mui/material/Box';
 import Stack from '@mui/material/Stack';

front_minimal/src/sections/_examples/foundation/colors-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import Box from '@mui/material/Box';
 import Stack from '@mui/material/Stack';

front_minimal/src/sections/_examples/foundation/grid-view/view.jsx

@@ -1,4 +1,3 @@
-'use client';
 
 import { useState } from 'react';