Add "Download app" screen for too small screens, translate strings

# Please enter the commit message for your changes. Lines starting

frontend/src/core/config.ts

@@ -27,4 +27,6 @@ export const API_WS_BASE_URL = `${location.host || BASE_DOMAIN}/api`;
  * Application name displayed in UI and document title
  * @constant
  */
-export const PRODUCT_NAME = "FromChat";
+export const PRODUCT_NAME = "FromChat";
+
+export const MINIMUM_WIDTH = 800;

frontend/src/resources/css/_download-app.scss

@@ -0,0 +1,8 @@
+.download-app-screen {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    min-width: 100vw;
+    min-height: 100vh;
+    padding: 32px;
+}

frontend/src/resources/css/style.scss

@@ -9,6 +9,7 @@
 @use "common/material" as *;
 @use "electron";
 @use "dialogs/reply";
+@use "download-app";
 
 @use "lib/fonts/montserrat";
 @use "lib/fonts/material-symbols";

frontend/src/ui/App.tsx

@@ -1,5 +1,8 @@
+import { MINIMUM_WIDTH } from "../core/config";
 import { ElectronTitleBar } from "./components/Electron";
+import useWindowSize from "./hooks/useWindowSize";
 import ChatScreen from "./screen/ChatScreen";
+import DownloadAppScreen from "./screen/DownloadAppScreen";
 import LoginScreen from "./screen/LoginScreen";
 import RegisterScreen from "./screen/RegisterScreen";
 import { useAppState } from "./state";
@@ -7,12 +10,17 @@ import { useEffect } from "react";
 
 export default function App() {
     const { currentPage, restoreUserFromStorage } = useAppState();
+    const { width } = useWindowSize();
 
     // Restore user from localStorage on app initialization
     useEffect(() => {
         restoreUserFromStorage();
     }, [restoreUserFromStorage]);
 
+    if (width < MINIMUM_WIDTH) {
+        return <DownloadAppScreen />
+    }
+
     let page = <LoginScreen />;
 
     switch (currentPage) {

frontend/src/ui/components/chat/MessageContextMenu.tsx

@@ -176,17 +176,17 @@ export function MessageContextMenu({
         >
             <div className="context-menu-item" onClick={() => handleAction("reply")}>
                 <span className="material-symbols">reply</span>
-                Reply
+                Ответить
             </div>
             {isAuthor && (
                 <>
                     <div className="context-menu-item" onClick={() => handleAction("edit")}>
                         <span className="material-symbols">edit</span>
-                        Edit
+                        Редактировать
                     </div>
                     <div className="context-menu-item" onClick={() => handleAction("delete")}>
                         <span className="material-symbols">delete</span>
-                        Delete
+                        Удалить
                     </div>
                 </>
             )}

frontend/src/ui/components/chat/MessagePanelRenderer.tsx

@@ -41,8 +41,8 @@ export function MessagePanelRenderer({ panel, isChatSwitching }: MessagePanelRen
         
         // Cleanup function
         return () => {
-            if (panel && (panel as any).onStateChange) {
+            if (panel && panel.onStateChange) {
-                (panel as any).onStateChange = null;
+                panel.onStateChange = null;
             }
         };
     }, [panel]);
@@ -72,10 +72,10 @@ export function MessagePanelRenderer({ panel, isChatSwitching }: MessagePanelRen
                         <img src={defaultAvatar} alt="Avatar" className="chat-header-avatar" />
                         <div className="chat-header-info">
                             <div className="info-chat">
-                                <h4 id="chat-name">Select a chat</h4>
+                                <h4 id="chat-name">Выбор чата</h4>
                                 <p>
                                     <span className="online-status"></span>
-                                    Choose a chat to start messaging
+                                    Выберите чат, чтобы начать переписку
                                 </p>
                             </div>
                         </div>
@@ -88,7 +88,7 @@ export function MessagePanelRenderer({ panel, isChatSwitching }: MessagePanelRen
                             height: "100%",
                             color: "var(--mdui-color-on-surface-variant)"
                         }}>
-                            Select a chat from the sidebar to start messaging
+                            Выберите чат на боковой панели, чтобы начать переписку
                         </div>
                     </div>
                 </div>
@@ -128,7 +128,7 @@ export function MessagePanelRenderer({ panel, isChatSwitching }: MessagePanelRen
                             height: "100%",
                             color: "var(--mdui-color-on-surface-variant)"
                         }}>
-                            Loading messages...
+                            Загрузка сообщений...
                         </div>
                     </div>
                 ): (

frontend/src/ui/components/chat/ReplyMessageDialog.tsx

@@ -36,7 +36,7 @@ export function ReplyMessageDialog({ isOpen, onOpenChange, replyToMessage, onSen
     return (
         <MaterialDialog open={isOpen} onOpenChange={onOpenChange} close-on-overlay-click close-on-esc className="reply-dialog">
             <div className="dialog-content">
-                <h3>Reply to Message</h3>
+                <h3>Ответить на сообщение</h3>
                 <div className="reply-preview-dialog">
                     <div className="reply-content">
                         <span className="reply-username">{replyToMessage.username}</span>

frontend/src/ui/components/chat/UserProfileDialog.tsx

@@ -28,24 +28,24 @@ export function UserProfileDialog({ isOpen, onOpenChange, userProfile }: UserPro
                     <div className={`online-status ${userProfile.online ? "online" : "offline"}`}>
                         {userProfile.online ? (
                             <>
-                                <span className="online-indicator"></span> Online
+                                <span className="online-indicator"></span> Онлайн
                             </>
                         ) : (
                             <>
-                                <span className="offline-indicator"></span> Last seen {formatTime(userProfile.last_seen)}
+                                <span className="offline-indicator"></span> Последний заход {formatTime(userProfile.last_seen)}
                             </>
                         )}
                     </div>
                 </div>
                 <div className="bio-section">
-                    <label>Bio:</label>
+                    <label>О себе:</label>
                     <div className="bio-display">
                         {userProfile.bio || "No bio available."}
                     </div>
                 </div>
                 <div className="profile-stats">
                     <div className="stat">
-                        <span className="stat-label">Member since:</span>
+                        <span className="stat-label">Зарегистрирован:</span>
                         <span className="stat-value member-since">{formatTime(userProfile.created_at)}</span>
                     </div>
                     <div className="stat">

frontend/src/ui/hooks/useWindowSize.ts

@@ -0,0 +1,29 @@
+import { useEffect, useState } from "react";
+
+export interface WindowSize {
+    width: number;
+    height: number;
+}
+
+export default function useWindowSize(): WindowSize {
+    const [width, setWidth] = useState(innerWidth);
+    const [height, setHeight] = useState(innerHeight);
+
+    useEffect(() => {
+        function listener() {
+            setWidth(innerWidth);
+            setHeight(innerHeight);
+        }
+
+        addEventListener("resize", listener);
+
+        return () => {
+            removeEventListener("resize", listener);
+        }
+    });
+
+    return {
+        width: width,
+        height: height
+    }
+}

frontend/src/ui/screen/DownloadAppScreen.tsx

@@ -0,0 +1,25 @@
+export default function DownloadAppScreen() {
+    return (
+        <div className="download-app-screen">
+            <div className="inner">
+                <h1>Чтобы пользоваться мессенджером, скачайте приложение</h1>
+                <p>
+                    Этот сайт <b>не предназначен</b> для работы на маленьких экранах, поэтому
+                    вам нужно скачать приложение мессенджера.
+                </p>
+
+                <a href="https://github.com/denis0001-dev/FromChat-android/releases/latest">
+                    <mdui-button>Скачать на GitHub</mdui-button>
+                </a>
+                
+                <p>
+                    Если возникнут сложности или есть вопросы, нажмите кнопку!
+                </p>
+
+                <a href="https://t.me/denis0001-dev">
+                    <mdui-button>Написать в поддержку</mdui-button>
+                </a>
+            </div>
+        </div>
+    )
+}