feat: finalize channels fixes and runtime stability

build.gradle

@@ -4,6 +4,12 @@ plugins {
     id 'com.github.johnrengelman.shadow' version '8.1.1'
 }
 
+allprojects {
+    tasks.withType(JavaCompile).configureEach {
+        options.encoding = 'UTF-8'
+    }
+}
+
 group = 'shine'
 version = '1.1_codex'
 

scripts/shine-ui-gateway.mjs

@@ -0,0 +1,197 @@
+import http from 'node:http';
+import net from 'node:net';
+import path from 'node:path';
+import { promises as fs } from 'node:fs';
+import { fileURLToPath } from 'node:url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const projectRoot = path.resolve(__dirname, '..');
+const uiRoot = path.resolve(projectRoot, 'shine-UI');
+
+const listenPort = Number(process.env.SHINE_UI_PORT || 8088);
+const backendHost = process.env.SHINE_BACKEND_HOST || '127.0.0.1';
+const backendPort = Number(process.env.SHINE_BACKEND_PORT || 7071);
+const backendWsPath = process.env.SHINE_BACKEND_WS_PATH || '/ws';
+
+const textContentTypes = new Set([
+  '.html',
+  '.css',
+  '.js',
+  '.mjs',
+  '.json',
+  '.txt',
+  '.svg',
+  '.xml',
+  '.webmanifest',
+]);
+
+const mimeByExt = {
+  '.html': 'text/html; charset=utf-8',
+  '.css': 'text/css; charset=utf-8',
+  '.js': 'text/javascript; charset=utf-8',
+  '.mjs': 'text/javascript; charset=utf-8',
+  '.json': 'application/json; charset=utf-8',
+  '.txt': 'text/plain; charset=utf-8',
+  '.svg': 'image/svg+xml; charset=utf-8',
+  '.xml': 'application/xml; charset=utf-8',
+  '.webmanifest': 'application/manifest+json; charset=utf-8',
+  '.jpg': 'image/jpeg',
+  '.jpeg': 'image/jpeg',
+  '.png': 'image/png',
+  '.gif': 'image/gif',
+  '.webp': 'image/webp',
+  '.ico': 'image/x-icon',
+  '.woff': 'font/woff',
+  '.woff2': 'font/woff2',
+};
+
+function sanitizePathname(pathname) {
+  const withoutQuery = String(pathname || '').split('?')[0];
+  const decoded = decodeURIComponent(withoutQuery);
+  const normalized = path.posix.normalize(decoded);
+  if (normalized.includes('..')) return null;
+  return normalized.startsWith('/') ? normalized : `/${normalized}`;
+}
+
+function toLocalFilePath(pathname) {
+  const safePath = sanitizePathname(pathname);
+  if (!safePath) return null;
+  const target = safePath === '/' ? '/index.html' : safePath;
+  return path.resolve(uiRoot, `.${target}`);
+}
+
+function isInsideUiRoot(filePath) {
+  const rel = path.relative(uiRoot, filePath);
+  return rel && !rel.startsWith('..') && !path.isAbsolute(rel);
+}
+
+async function tryReadFile(filePath) {
+  try {
+    const stat = await fs.stat(filePath);
+    if (!stat.isFile()) return null;
+    const data = await fs.readFile(filePath);
+    return { data, stat };
+  } catch {
+    return null;
+  }
+}
+
+function writeCorsAndCacheHeaders(res) {
+  res.setHeader('Cache-Control', 'no-store');
+  res.setHeader('Access-Control-Allow-Origin', '*');
+  res.setHeader('Access-Control-Allow-Headers', '*');
+  res.setHeader('Access-Control-Allow-Methods', 'GET,OPTIONS');
+}
+
+async function handleHttp(req, res) {
+  if (req.method === 'OPTIONS') {
+    writeCorsAndCacheHeaders(res);
+    res.writeHead(204);
+    res.end();
+    return;
+  }
+
+  const rawUrl = req.url || '/';
+  const pathname = rawUrl.split('?')[0] || '/';
+  if (pathname.startsWith('/ws')) {
+    writeCorsAndCacheHeaders(res);
+    res.writeHead(426, { 'Content-Type': 'application/json; charset=utf-8' });
+    res.end(JSON.stringify({ ok: false, error: 'upgrade_required', message: 'Use WebSocket upgrade for /ws' }));
+    return;
+  }
+
+  const directPath = toLocalFilePath(pathname);
+  if (!directPath || !isInsideUiRoot(directPath)) {
+    writeCorsAndCacheHeaders(res);
+    res.writeHead(400, { 'Content-Type': 'text/plain; charset=utf-8' });
+    res.end('Bad path');
+    return;
+  }
+
+  let file = await tryReadFile(directPath);
+  if (!file) {
+    const fallback = path.resolve(uiRoot, 'index.html');
+    file = await tryReadFile(fallback);
+    if (!file) {
+      writeCorsAndCacheHeaders(res);
+      res.writeHead(404, { 'Content-Type': 'text/plain; charset=utf-8' });
+      res.end('index.html not found');
+      return;
+    }
+  }
+
+  const ext = path.extname(directPath).toLowerCase();
+  const contentType = mimeByExt[ext] || 'application/octet-stream';
+  writeCorsAndCacheHeaders(res);
+  res.writeHead(200, {
+    'Content-Type': contentType,
+    'Content-Length': file.stat.size,
+  });
+  res.end(file.data);
+}
+
+function buildUpstreamUpgradeRequest(req) {
+  const sourceUrl = new URL(req.url || '/ws', `http://${req.headers.host || 'localhost'}`);
+  const targetPath = `${backendWsPath}${sourceUrl.search || ''}`;
+
+  const headers = { ...req.headers };
+  headers.host = `${backendHost}:${backendPort}`;
+  headers.connection = 'Upgrade';
+  headers.upgrade = 'websocket';
+
+  let raw = `GET ${targetPath} HTTP/1.1\r\n`;
+  Object.entries(headers).forEach(([name, value]) => {
+    if (value == null) return;
+    if (Array.isArray(value)) {
+      value.forEach((single) => {
+        raw += `${name}: ${single}\r\n`;
+      });
+      return;
+    }
+    raw += `${name}: ${value}\r\n`;
+  });
+  raw += '\r\n';
+  return raw;
+}
+
+function handleUpgrade(req, socket, head) {
+  const pathname = String(req.url || '').split('?')[0] || '';
+  if (!pathname.startsWith('/ws')) {
+    socket.destroy();
+    return;
+  }
+
+  const upstream = net.connect(backendPort, backendHost, () => {
+    const upstreamRequest = buildUpstreamUpgradeRequest(req);
+    upstream.write(upstreamRequest);
+    if (head?.length) {
+      upstream.write(head);
+    }
+    socket.pipe(upstream).pipe(socket);
+  });
+
+  const closeBoth = () => {
+    if (!socket.destroyed) socket.destroy();
+    if (!upstream.destroyed) upstream.destroy();
+  };
+
+  upstream.on('error', closeBoth);
+  socket.on('error', closeBoth);
+}
+
+const server = http.createServer((req, res) => {
+  handleHttp(req, res).catch(() => {
+    writeCorsAndCacheHeaders(res);
+    res.writeHead(500, { 'Content-Type': 'text/plain; charset=utf-8' });
+    res.end('Internal gateway error');
+  });
+});
+
+server.on('upgrade', handleUpgrade);
+
+server.listen(listenPort, () => {
+  console.log(`[shine-ui-gateway] uiRoot=${uiRoot}`);
+  console.log(`[shine-ui-gateway] listening=http://localhost:${listenPort}`);
+  console.log(`[shine-ui-gateway] ws proxy=ws://${backendHost}:${backendPort}${backendWsPath}`);
+});

shine-UI/index.html

@@ -6,7 +6,7 @@
     <link rel="manifest" href="./manifest.webmanifest" />
     <title>Shine UI Demo</title>
     <script>
-      window.__SHINE_BUILD_HASH__ = '20260407120000';
+      window.__SHINE_BUILD_HASH__ = '20260413151200';
     </script>
     <script>
       (function attachStylesWithBuildHash() {

shine-UI/js/app.js

@@ -41,6 +41,7 @@ import * as contactSearchView from './pages/contact-search-view.js';
 import * as chatView from './pages/chat-view.js';
 import * as channelsList from './pages/channels-list.js';
 import * as channelView from './pages/channel-view.js';
+import * as channelThreadView from './pages/channel-thread-view.js';
 import * as addChannelView from './pages/add-channel-view.js';
 import * as networkView from './pages/network-view.js';
 import * as notificationsView from './pages/notifications-view.js';
@@ -72,6 +73,7 @@ const routes = {
   'chat-view': chatView,
   'channels-list': channelsList,
   'channel-view': channelView,
+  'channel-thread-view': channelThreadView,
   'add-channel-view': addChannelView,
   'network-view': networkView,
   'notifications-view': notificationsView,
@@ -141,6 +143,45 @@ window.addEventListener('unhandledrejection', (event) => {
   });
 });
 
+function renderPageFailureFallback(pageId, error) {
+  captureClientError({
+    kind: 'page_render_failure',
+    message: error?.message || 'Page render failed',
+    stack: error?.stack || '',
+    context: {
+      pageId,
+      routeHash: window.location.hash || '',
+    },
+  });
+
+  screenEl.innerHTML = '';
+  const wrap = document.createElement('section');
+  wrap.className = 'stack';
+
+  const card = document.createElement('div');
+  card.className = 'card stack channels-status';
+
+  const title = document.createElement('strong');
+  title.textContent = 'Не удалось отрисовать экран';
+
+  const details = document.createElement('p');
+  details.className = 'meta-muted';
+  details.textContent = `Экран: ${pageId || 'неизвестно'}. Попробуйте повторить.`;
+
+  const retry = document.createElement('button');
+  retry.type = 'button';
+  retry.className = 'primary-btn';
+  retry.textContent = 'Повторить';
+  retry.addEventListener('click', () => renderApp());
+
+  card.append(title, details, retry);
+  wrap.append(card);
+  screenEl.append(wrap);
+
+  screenEl.classList.toggle('no-app-chrome', false);
+  toolbarEl.innerHTML = '';
+}
+
 function renderApp() {
   const route = getRoute();
   const pageId = route.pageId || (state.session.isAuthorized ? 'profile-view' : 'start-view');
@@ -162,8 +203,13 @@ function renderApp() {
     currentCleanup = null;
   }
 
+  try {
     screenEl.innerHTML = '';
     const screen = page.render({ route, navigate });
+    if (!(screen instanceof Node)) {
+      throw new Error('Page render returned invalid node');
+    }
+
     screenEl.append(screen);
     currentCleanup = typeof screen.cleanup === 'function' ? screen.cleanup : null;
 
@@ -171,10 +217,13 @@ function renderApp() {
     screenEl.classList.toggle('no-app-chrome', !showAppChrome);
 
     toolbarEl.innerHTML = '';
-
     if (showAppChrome) {
       toolbarEl.append(renderToolbar(page.pageMeta.id, navigate));
     }
+  } catch (error) {
+    console.error('[renderApp] controlled fallback', error);
+    renderPageFailureFallback(pageId, error);
+  }
 }
 
 async function tryAutoLogin() {

shine-UI/js/pages/add-channel-view.js

@@ -1,38 +1,123 @@
 import { renderHeader } from '../components/header.js';
+import { authService, state } from '../state.js';
+import { toUserMessage } from '../services/ui-error-texts.js';
+import {
+  channelNameErrorText,
+  normalizeChannelDisplayName,
+  validateChannelDisplayName,
+} from '../services/channel-name-rules.js';
 
-export const pageMeta = { id: 'add-channel-view', title: 'Добавить канал' };
+export const pageMeta = { id: 'add-channel-view', title: 'Создать канал' };
+
+const CREATE_CHANNEL_FLASH_KEY = 'shine-channels-create-success';
+
+function persistCreateSuccessFlash(message) {
+  try {
+    sessionStorage.setItem(CREATE_CHANNEL_FLASH_KEY, String(message || '').trim());
+  } catch {
+    // ignore storage errors
+  }
+}
 
 export function render({ navigate }) {
   const screen = document.createElement('section');
-  screen.className = 'stack';
+  screen.className = 'stack channels-screen channels-screen--add';
 
   screen.append(
     renderHeader({
-      title: 'Добавить канал',
+      title: 'Создать канал',
-      leftAction: { label: '←', onClick: () => navigate('channels-list') },
+      leftAction: { label: '<', onClick: () => navigate('channels-list') },
     })
   );
 
   const form = document.createElement('form');
   form.className = 'card stack';
   form.innerHTML = `
-    <label for="channel-name">Имя канала</label>
+    <strong class="channel-head-title">Создание канала</strong>
-    <input id="channel-name" class="input" maxlength="64" placeholder="Например: Новости команды" required />
+    <p class="channel-head-meta">Можно использовать кириллицу, латиницу, цифры, пробел, _ и -.</p>
-    <div style="display:grid; grid-template-columns:1fr 1fr; gap:10px;">
+    <p class="channel-head-meta">Длина: от 3 до 32 символов. Название уникально во всей системе.</p>
+    <label for="channel-name">Название канала</label>
+    <input id="channel-name" class="input" maxlength="64" placeholder="Например: Поток силы" required />
+    <div id="channel-create-error" class="meta-muted inline-error"></div>
+    <div class="form-actions-grid">
       <button type="button" class="secondary-btn" id="cancel-create-channel">Отмена</button>
-      <button type="submit" class="primary-btn">Создать</button>
+      <button type="submit" class="primary-btn" id="submit-create-channel">Создать</button>
     </div>
   `;
 
-  form.addEventListener('submit', (event) => {
+  const inputEl = form.querySelector('#channel-name');
-    event.preventDefault();
+  const errorEl = form.querySelector('#channel-create-error');
-    navigate('channels-list');
+  const submitEl = form.querySelector('#submit-create-channel');
+  const cancelEl = form.querySelector('#cancel-create-channel');
+
+  let submitInFlight = false;
+
+  const setBusy = (busy) => {
+    submitInFlight = !!busy;
+    submitEl.disabled = submitInFlight;
+    cancelEl.disabled = submitInFlight;
+    inputEl.disabled = submitInFlight;
+    submitEl.textContent = submitInFlight ? 'Создаём...' : 'Создать';
+  };
+
+  const updateValidation = () => {
+    const check = validateChannelDisplayName(inputEl.value);
+    if (!check.ok) {
+      errorEl.textContent = channelNameErrorText(check.code);
+    } else {
+      errorEl.textContent = '';
+    }
+    submitEl.disabled = submitInFlight || !check.ok;
+    return check;
+  };
+
+  inputEl.addEventListener('input', () => {
+    updateValidation();
   });
 
-  form.querySelector('#cancel-create-channel').addEventListener('click', () => {
+  form.addEventListener('submit', async (event) => {
+    event.preventDefault();
+    if (submitInFlight) return;
+
+    const login = state.session.login;
+    const storagePwd = state.session.storagePwdInMemory;
+    if (!login || !storagePwd) {
+      errorEl.textContent = 'Сессия недействительна. Выполните вход заново.';
+      return;
+    }
+
+    const check = updateValidation();
+    if (!check.ok) return;
+
+    setBusy(true);
+    errorEl.textContent = '';
+
+    try {
+      const channelName = normalizeChannelDisplayName(check.normalized);
+      await authService.addBlockCreateChannel({
+        login,
+        storagePwd,
+        channelName,
+      });
+
+      persistCreateSuccessFlash(`Канал "${channelName}" создан.`);
+      navigate('channels-list');
+    } catch (error) {
+      errorEl.textContent = toUserMessage(error, 'Не удалось создать канал.');
+      setBusy(false);
+      const checkAfterError = validateChannelDisplayName(inputEl.value);
+      submitEl.disabled = submitInFlight || !checkAfterError.ok;
+    }
+  });
+
+  cancelEl.addEventListener('click', () => {
     navigate('channels-list');
   });
 
   screen.append(form);
+  if (inputEl) {
+    inputEl.focus();
+    updateValidation();
+  }
   return screen;
 }

shine-UI/js/pages/channel-thread-view.js

@@ -0,0 +1,461 @@
+import { renderHeader } from '../components/header.js';
+import { authService, getMessageReactionState, setMessageReactionState, state } from '../state.js';
+import { captureClientError } from '../services/client-error-reporter.js';
+import { toUserMessage } from '../services/ui-error-texts.js';
+
+export const pageMeta = { id: 'channel-thread-view', title: 'Тред' };
+
+const pendingReactionActions = new Set();
+
+function logThreadRuntimeError(stage, error, context = {}) {
+  const message = String(error?.message || error || 'thread runtime error');
+  console.error(`[channel-thread-view:${stage}]`, error, context);
+  captureClientError({
+    kind: 'channels_thread_runtime',
+    message,
+    stack: error?.stack || '',
+    context: {
+      stage,
+      ...context,
+    },
+  });
+}
+
+function encodeRoutePart(value = '') {
+  return encodeURIComponent(String(value));
+}
+
+function normalizeRouteHash(hash) {
+  const normalized = String(hash || '').trim().toLowerCase();
+  return normalized || '0';
+}
+
+function normalizeMessageHash(hash) {
+  const normalized = String(hash || '').trim().toLowerCase();
+  if (!/^[0-9a-f]{64}$/.test(normalized)) return '';
+  if (/^0+$/.test(normalized)) return '';
+  return normalized;
+}
+
+function toSafeInt(value) {
+  const parsed = Number(value);
+  return Number.isFinite(parsed) ? parsed : null;
+}
+
+function makeReactionActionKey(messageRef) {
+  const login = String(state.session.login || '').trim().toLowerCase();
+  const blockchainName = String(messageRef?.blockchainName || '').trim();
+  const blockNumber = Number(messageRef?.blockNumber);
+  const blockHash = normalizeMessageHash(messageRef?.blockHash);
+  if (!login || !blockchainName || !Number.isFinite(blockNumber) || blockNumber < 0 || !blockHash) return '';
+  return `${login}|${blockchainName}|${blockNumber}|${blockHash}`;
+}
+
+function parseThreadSelector(route) {
+  const params = route?.params || {};
+  const blockNumber = toSafeInt(params.messageBlockNumber);
+  if (!params.messageBlockchainName || blockNumber == null) return null;
+
+  return {
+    message: {
+      blockchainName: String(params.messageBlockchainName),
+      blockNumber,
+      blockHash: normalizeRouteHash(params.messageBlockHash),
+    },
+    channel: {
+      ownerBlockchainName: String(params.channelOwnerBlockchainName || ''),
+      rootBlockNumber: toSafeInt(params.channelRootBlockNumber),
+      rootBlockHash: normalizeRouteHash(params.channelRootBlockHash),
+    },
+  };
+}
+
+function allFeedSummaries() {
+  const feed = state.channelsFeed || {};
+  return [
+    ...(feed.ownedChannels || []),
+    ...(feed.followedUsersChannels || []),
+    ...(feed.followedChannels || []),
+  ];
+}
+
+function resolveChannelDisplayName(channelSelector) {
+  if (!channelSelector?.ownerBlockchainName || channelSelector?.rootBlockNumber == null) return '';
+  const ownerBch = String(channelSelector.ownerBlockchainName);
+  const rootNo = Number(channelSelector.rootBlockNumber);
+  const rootHash = normalizeRouteHash(channelSelector.rootBlockHash);
+
+  const found = allFeedSummaries().find((summary) => (
+    String(summary?.channel?.ownerBlockchainName || '') === ownerBch
+    && Number(summary?.channel?.channelRoot?.blockNumber) === rootNo
+    && normalizeRouteHash(summary?.channel?.channelRoot?.blockHash) === rootHash
+  ));
+  if (!found) return '';
+  return `${found.channel?.ownerLogin || 'неизвестно'}/${found.channel?.channelName || 'канал'}`;
+}
+
+function buildBackRoute(selector) {
+  const channel = selector?.channel;
+  if (channel?.ownerBlockchainName && channel.rootBlockNumber != null) {
+    return [
+      'channel-view',
+      encodeRoutePart(channel.ownerBlockchainName),
+      channel.rootBlockNumber,
+      channel.rootBlockHash,
+    ].join('/');
+  }
+  return 'channels-list';
+}
+
+function buildTargetFromNode(node) {
+  const blockchainName = String(node?.authorBlockchainName || '').trim();
+  const blockNumber = Number(node?.messageRef?.blockNumber);
+  const blockHash = normalizeMessageHash(node?.messageRef?.blockHash);
+  if (!blockchainName || !Number.isFinite(blockNumber) || blockNumber < 0 || !blockHash) return null;
+  return { blockchainName, blockNumber, blockHash };
+}
+
+function firstNonEmptyText(...candidates) {
+  for (const candidate of candidates) {
+    if (typeof candidate !== 'string') continue;
+    const trimmed = candidate.trim();
+    if (trimmed.length > 0) return candidate;
+  }
+  return '';
+}
+
+function latestVersionText(versions) {
+  if (!Array.isArray(versions)) return '';
+  for (let i = versions.length - 1; i >= 0; i -= 1) {
+    const version = versions[i];
+    const value = firstNonEmptyText(version?.text, version?.message, version?.body);
+    if (value) return value;
+  }
+  return '';
+}
+
+function resolveNodeText(node) {
+  return firstNonEmptyText(
+    node?.text,
+    node?.message,
+    node?.body,
+    latestVersionText(node?.versions),
+  );
+}
+
+function openReplyModal({ onSubmit }) {
+  const root = document.getElementById('modal-root');
+  root.innerHTML = `
+    <div class="modal" id="thread-reply-modal">
+      <div class="modal-card stack">
+        <h3 class="modal-title">Ответ</h3>
+        <textarea id="thread-reply-text" class="input" rows="5" maxlength="2000" placeholder="Текст ответа"></textarea>
+        <div class="meta-muted inline-error" id="thread-reply-error"></div>
+        <div class="form-actions-grid">
+          <button class="secondary-btn" id="thread-reply-cancel" type="button">Отмена</button>
+          <button class="primary-btn" id="thread-reply-submit" type="button">Отправить</button>
+        </div>
+      </div>
+    </div>
+  `;
+
+  const textEl = root.querySelector('#thread-reply-text');
+  const errorEl = root.querySelector('#thread-reply-error');
+  const close = () => {
+    root.innerHTML = '';
+  };
+
+  root.querySelector('#thread-reply-cancel').addEventListener('click', close);
+  root.querySelector('#thread-reply-submit').addEventListener('click', async () => {
+    const text = String(textEl?.value || '').trim();
+    if (!text) {
+      errorEl.textContent = 'Введите текст ответа.';
+      return;
+    }
+
+    try {
+      await onSubmit(text);
+      close();
+    } catch (error) {
+      errorEl.textContent = toUserMessage(error, 'Не удалось отправить ответ.');
+    }
+  });
+
+  if (textEl) textEl.focus();
+}
+
+function renderNodeCard(node, heading, handlers) {
+  const card = document.createElement('article');
+  card.className = 'card stack thread-node-card';
+
+  const author = node?.authorLogin || 'автор';
+  const bch = node?.authorBlockchainName || '-';
+  const blockNo = node?.messageRef?.blockNumber ?? '?';
+  const text = resolveNodeText(node) || '(пусто)';
+  const likes = Number(node?.likesCount || 0);
+  const replies = Number(node?.repliesCount || 0);
+  const versions = Number(node?.versionsTotal || 1);
+
+  card.innerHTML = `
+    <strong class="thread-node-heading">${heading}</strong>
+    <p class="thread-node-meta">${author} (${bch}) - #${blockNo}</p>
+    <p class="thread-node-body">${text}</p>
+    <p class="thread-node-stats">Лайки: ${likes}, ответы: ${replies}, версий: ${versions}</p>
+  `;
+
+  const target = buildTargetFromNode(node);
+  if (!target || !handlers) return card;
+
+  setMessageReactionState(target, node?.likedByMe === true ? 'liked' : 'unliked');
+
+  const actionKey = makeReactionActionKey(target);
+  const isPending = actionKey ? pendingReactionActions.has(actionKey) : false;
+  const isLiked = getMessageReactionState(target) === 'liked';
+
+  const actions = document.createElement('div');
+  actions.className = 'thread-node-actions';
+
+  const likeButton = document.createElement('button');
+  likeButton.type = 'button';
+  likeButton.className = 'secondary-btn thread-like-btn';
+  if (isLiked) likeButton.classList.add('is-liked');
+  likeButton.textContent = isPending ? 'Выполняется...' : (isLiked ? 'Убрать лайк' : 'Лайк');
+  likeButton.disabled = isPending;
+  likeButton.addEventListener('click', async () => {
+    if (isPending) return;
+    try {
+      await handlers.onToggleLike(target, isLiked ? 'unlike' : 'like');
+    } catch (error) {
+      logThreadRuntimeError('like_click', error, {
+        action: isLiked ? 'unlike' : 'like',
+        targetBlockchainName: target?.blockchainName || '',
+        targetBlockNumber: target?.blockNumber,
+      });
+      handlers?.onActionError?.(error, isLiked ? 'unlike' : 'like');
+    }
+  });
+
+  const replyButton = document.createElement('button');
+  replyButton.type = 'button';
+  replyButton.className = 'secondary-btn thread-reply-btn';
+  replyButton.textContent = 'Ответить';
+  replyButton.addEventListener('click', () => {
+    openReplyModal({
+      onSubmit: async (textValue) => handlers.onReply(target, textValue),
+    });
+  });
+
+  actions.append(likeButton, replyButton);
+  card.append(actions);
+  return card;
+}
+
+function renderDescendants(items, handlers, depth = 0) {
+  const wrap = document.createElement('div');
+  wrap.className = 'stack';
+
+  const normalized = Array.isArray(items) ? items : [];
+  normalized.forEach((branch, index) => {
+    try {
+      const row = renderNodeCard(branch?.node, `Ответ ${index + 1}`, handlers);
+      row.classList.add('thread-node-level');
+      row.style.setProperty('--depth', String(Math.min(depth, 4)));
+      wrap.append(row);
+
+      if (Array.isArray(branch?.children) && branch.children.length) {
+        wrap.append(renderDescendants(branch.children, handlers, depth + 1));
+      }
+    } catch (error) {
+      logThreadRuntimeError('render_descendants_branch', error, { depth, index });
+    }
+  });
+
+  return wrap;
+}
+
+export function render({ navigate, route }) {
+  const selector = parseThreadSelector(route);
+  const backRoute = buildBackRoute(selector);
+  const channelDisplayName = resolveChannelDisplayName(selector?.channel);
+
+  const screen = document.createElement('section');
+  screen.className = 'stack channels-screen channels-screen--thread';
+
+  const userIndicator = document.createElement('div');
+  userIndicator.className = 'card channels-user-chip';
+  userIndicator.textContent = `Вы вошли как @${state.session.login || 'неизвестно'}`;
+
+  const channelIndicator = document.createElement('div');
+  channelIndicator.className = 'card channels-user-chip';
+  channelIndicator.textContent = `Канал: ${channelDisplayName || selector?.channel?.ownerBlockchainName || 'неизвестно'}`;
+
+  const statusBox = document.createElement('div');
+  statusBox.className = 'card status-line is-unavailable channels-status';
+  statusBox.style.display = 'none';
+
+  const rerender = () => {
+    try {
+      const current = document.querySelector('section.channels-screen--thread');
+      if (!current) return;
+      const next = render({ navigate, route });
+      current.replaceWith(next);
+    } catch (error) {
+      logThreadRuntimeError('rerender', error, {
+        routeHash: window.location.hash,
+      });
+    }
+  };
+
+  const showStatus = (message) => {
+    if (!message) {
+      statusBox.style.display = 'none';
+      statusBox.textContent = '';
+      return;
+    }
+    statusBox.textContent = message;
+    statusBox.style.display = '';
+  };
+
+  const requireSigningSession = () => {
+    const login = state.session.login;
+    const storagePwd = state.session.storagePwdInMemory;
+    if (!login || !storagePwd) throw new Error('Сессия недействительна. Выполните вход заново.');
+    return { login, storagePwd };
+  };
+
+  const rereadThread = async () => {
+    if (!selector) return;
+    await authService.getMessageThread(selector.message, 20, 2, 50, state.session.login);
+  };
+
+  const handlers = {
+    onToggleLike: async (target, action) => {
+      const actionKey = makeReactionActionKey(target);
+      if (!actionKey) throw new Error('Некорректная ссылка на сообщение для реакции.');
+      if (pendingReactionActions.has(actionKey)) return;
+
+      pendingReactionActions.add(actionKey);
+      rerender();
+      try {
+        const { login, storagePwd } = requireSigningSession();
+        if (action === 'unlike') {
+          await authService.addBlockUnlike({ login, storagePwd, message: target });
+        } else {
+          await authService.addBlockLike({ login, storagePwd, message: target });
+        }
+        await rereadThread();
+        showStatus('');
+      } catch (error) {
+        logThreadRuntimeError('toggle_like', error, {
+          action,
+          targetBlockchainName: target?.blockchainName || '',
+          targetBlockNumber: target?.blockNumber,
+        });
+        throw error;
+      } finally {
+        pendingReactionActions.delete(actionKey);
+        rerender();
+      }
+    },
+    onReply: async (target, textValue) => {
+      const { login, storagePwd } = requireSigningSession();
+      await authService.addBlockReply({ login, storagePwd, message: target, text: textValue });
+      await rereadThread();
+      showStatus('');
+      rerender();
+    },
+    onActionError: (error, action) => {
+      const fallback = action === 'unlike'
+        ? 'Не удалось убрать лайк.'
+        : 'Не удалось поставить лайк.';
+      showStatus(toUserMessage(error, fallback));
+    },
+  };
+
+  screen.append(
+    renderHeader({
+      title: 'Тред',
+      leftAction: { label: '<', onClick: () => navigate(backRoute) },
+    })
+  );
+  screen.append(userIndicator, channelIndicator, statusBox);
+
+  if (!selector) {
+    const invalid = document.createElement('div');
+    invalid.className = 'card meta-muted';
+    invalid.textContent = 'Некорректный идентификатор треда в адресе страницы.';
+    screen.append(invalid);
+    return screen;
+  }
+
+  const loading = document.createElement('div');
+  loading.className = 'card meta-muted';
+  loading.textContent = 'Загрузка треда...';
+  screen.append(loading);
+
+  (async () => {
+    try {
+      const payload = await authService.getMessageThread(selector.message, 20, 2, 50, state.session.login);
+      loading.remove();
+
+      const ancestors = Array.isArray(payload?.ancestors) ? payload.ancestors : [];
+      const focus = payload?.focus || null;
+      const descendants = Array.isArray(payload?.descendants) ? payload.descendants : [];
+
+      const summary = document.createElement('div');
+      summary.className = 'card thread-summary';
+      summary.textContent = `Предки: ${ancestors.length}, ответы: ${descendants.length}`;
+      screen.append(summary);
+
+      if (ancestors.length) {
+        const ancestorsWrap = document.createElement('div');
+        ancestorsWrap.className = 'stack thread-block thread-block--ancestors';
+        const title = document.createElement('h3');
+        title.className = 'section-title';
+        title.textContent = 'Предыдущие сообщения';
+        ancestorsWrap.append(title);
+        ancestors.forEach((node, index) => {
+          ancestorsWrap.append(renderNodeCard(node, `Предок ${index + 1}`, handlers));
+        });
+        screen.append(ancestorsWrap);
+      }
+
+      if (focus) {
+        const focusWrap = document.createElement('div');
+        focusWrap.className = 'stack thread-block thread-block--focus';
+        const title = document.createElement('h3');
+        title.className = 'section-title';
+        title.textContent = 'Текущее сообщение';
+        focusWrap.append(title, renderNodeCard(focus, 'Выбранное сообщение', handlers));
+        screen.append(focusWrap);
+      }
+
+      const descendantsWrap = document.createElement('div');
+      descendantsWrap.className = 'stack thread-block thread-block--replies';
+      const descendantsTitle = document.createElement('h3');
+      descendantsTitle.className = 'section-title';
+      descendantsTitle.textContent = 'Ответы';
+      descendantsWrap.append(descendantsTitle);
+
+      if (descendants.length) {
+        descendantsWrap.append(renderDescendants(descendants, handlers));
+      } else {
+        const empty = document.createElement('div');
+        empty.className = 'card meta-muted';
+        empty.textContent = 'Ответов пока нет.';
+        descendantsWrap.append(empty);
+      }
+
+      screen.append(descendantsWrap);
+    } catch (error) {
+      loading.remove();
+      const failed = document.createElement('div');
+      failed.className = 'card meta-muted';
+      failed.textContent = `Не удалось загрузить тред: ${toUserMessage(error, 'неизвестная ошибка')}`;
+      screen.append(failed);
+    }
+  })();
+
+  return screen;
+}
+

shine-UI/js/pages/channel-view.js

@@ -1,11 +1,169 @@
 import { renderHeader } from '../components/header.js';
 import { channelPosts, channels } from '../mock-data.js';
-import { addLocalChannelPost, authService, getLocalChannelPosts, state } from '../state.js';
+import {
+  addLocalChannelPost,
+  authService,
+  getLocalChannelPosts,
+  getMessageReactionState,
+  setMessageReactionState,
+  state,
+} from '../state.js';
+import { toUserMessage } from '../services/ui-error-texts.js';
 
 export const pageMeta = { id: 'channel-view', title: 'Канал' };
 
+const ZERO64 = '0'.repeat(64);
+const pendingReactionActions = new Set();
+
+function isChannelsDemoMode() {
+  try {
+    const qs = new URLSearchParams(window.location.search);
+    if (qs.get('channelsDemo') === '1') return true;
+    return localStorage.getItem('shine-channels-demo') === '1';
+  } catch {
+    return false;
+  }
+}
+
+function encodeRoutePart(value = '') {
+  return encodeURIComponent(String(value));
+}
+
+function normalizeRouteHash(hash) {
+  const normalized = String(hash || '').trim().toLowerCase();
+  return normalized || '0';
+}
+
+function normalizeMessageHash(hash) {
+  const normalized = String(hash || '').trim().toLowerCase();
+  if (!/^[0-9a-f]{64}$/.test(normalized)) return '';
+  if (/^0+$/.test(normalized)) return '';
+  return normalized;
+}
+
+function toSafeInt(value) {
+  const parsed = Number(value);
+  return Number.isFinite(parsed) ? parsed : null;
+}
+
+function makeReactionActionKey(messageRef) {
+  const login = String(state.session.login || '').trim().toLowerCase();
+  const blockchainName = String(messageRef?.blockchainName || '').trim();
+  const blockNumber = Number(messageRef?.blockNumber);
+  const blockHash = normalizeMessageHash(messageRef?.blockHash);
+  if (!login || !blockchainName || !Number.isFinite(blockNumber) || blockNumber < 0 || !blockHash) return '';
+  return `${login}|${blockchainName}|${blockNumber}|${blockHash}`;
+}
+
+function buildSelectorFromRoute(route, channelId) {
+  const params = route?.params || {};
+
+  if (params.ownerBlockchainName) {
+    const rootBlockNumber = toSafeInt(params.channelRootBlockNumber);
+    if (rootBlockNumber != null) {
+      return {
+        ownerBlockchainName: String(params.ownerBlockchainName),
+        channelRootBlockNumber: rootBlockNumber,
+        channelRootBlockHash: normalizeRouteHash(params.channelRootBlockHash),
+      };
+    }
+  }
+
+  const summary = channelId ? state.channelsIndex[channelId] : null;
+  if (!summary) return null;
+  return {
+    ownerBlockchainName: summary.channel?.ownerBlockchainName,
+    channelRootBlockNumber: summary.channel?.channelRoot?.blockNumber,
+    channelRootBlockHash: normalizeRouteHash(summary.channel?.channelRoot?.blockHash),
+  };
+}
+
+function localPostsKey(selector, channelId) {
+  if (selector?.ownerBlockchainName && selector?.channelRootBlockNumber != null) {
+    return `${selector.ownerBlockchainName}:${selector.channelRootBlockNumber}`;
+  }
+  return channelId || '';
+}
+
+function buildThreadRoute(messageRef, selector) {
+  if (!messageRef || !selector) return '';
+  return [
+    'channel-thread-view',
+    encodeRoutePart(messageRef.blockchainName),
+    messageRef.blockNumber,
+    normalizeRouteHash(messageRef.blockHash),
+    encodeRoutePart(selector.ownerBlockchainName),
+    selector.channelRootBlockNumber,
+    normalizeRouteHash(selector.channelRootBlockHash),
+  ].join('/');
+}
+
+function firstNonEmptyText(...candidates) {
+  for (const candidate of candidates) {
+    if (typeof candidate !== 'string') continue;
+    const trimmed = candidate.trim();
+    if (trimmed.length > 0) return candidate;
+  }
+  return '';
+}
+
+function latestVersionText(versions) {
+  if (!Array.isArray(versions)) return '';
+  for (let i = versions.length - 1; i >= 0; i -= 1) {
+    const version = versions[i];
+    const value = firstNonEmptyText(version?.text, version?.message, version?.body);
+    if (value) return value;
+  }
+  return '';
+}
+
+function resolveMessageText(message) {
+  return firstNonEmptyText(
+    message?.text,
+    message?.message,
+    message?.body,
+    latestVersionText(message?.versions),
+  );
+}
+
+function mapApiMessageToPost(message, selector) {
+  const blockNumber = toSafeInt(message?.messageRef?.blockNumber);
+  const blockHash = normalizeMessageHash(message?.messageRef?.blockHash);
+  const messageBch = String(message?.authorBlockchainName || selector?.ownerBlockchainName || '').trim();
+  const hasRef = !!(messageBch && blockNumber != null && blockHash);
+  const resolvedText = resolveMessageText(message);
+  const messageRef = hasRef
+    ? {
+        blockchainName: messageBch,
+        blockNumber,
+        blockHash,
+      }
+    : null;
+
+  if (messageRef) {
+    setMessageReactionState(messageRef, message?.likedByMe === true ? 'liked' : 'unliked');
+  }
+
+  return {
+    title: `${message?.authorLogin || 'автор'} - #${blockNumber ?? '?'}`,
+    body: resolvedText || '(пусто)',
+    likesCount: Number(message?.likesCount || 0),
+    repliesCount: Number(message?.repliesCount || 0),
+    messageRef,
+    reactionState: messageRef ? getMessageReactionState(messageRef) : '',
+  };
+}
+
 function findMockChannel(channelId) {
-  const channel = channels.find((c) => c.id === channelId) || channels[0];
+  const fallback = channels[0] || {
+    id: 'ch0',
+    name: 'Неизвестный канал',
+    description: 'Описание отсутствует',
+    ownerName: 'неизвестно',
+    ownerLogin: '',
+    displayName: 'неизвестно/Неизвестный канал',
+  };
+  const channel = channels.find((c) => c.id === channelId) || fallback;
   return {
     channel,
     posts: [
@@ -13,33 +171,62 @@ function findMockChannel(channelId) {
       ...getLocalChannelPosts(channelId),
     ],
     isOwnChannel: channel.ownerLogin === '@shine.alex',
+    selector: null,
+    localKey: channelId,
   };
 }
 
-function mapApiMessageToPost(message) {
+function openReplyModal({ onSubmit }) {
-  return {
+  const root = document.getElementById('modal-root');
-    title: `${message.authorLogin || 'author'} • #${message.messageRef?.blockNumber ?? '?'}`,
+  root.innerHTML = `
-    body: message.text || '(пусто)',
+    <div class="modal" id="reply-modal">
+      <div class="modal-card stack">
+        <h3 class="modal-title">Ответ</h3>
+        <textarea id="reply-text" class="input" rows="5" maxlength="2000" placeholder="Текст ответа"></textarea>
+        <div class="meta-muted inline-error" id="reply-error"></div>
+        <div class="form-actions-grid">
+          <button class="secondary-btn" id="reply-cancel" type="button">Отмена</button>
+          <button class="primary-btn" id="reply-submit" type="button">Отправить</button>
+        </div>
+      </div>
+    </div>
+  `;
+
+  const textEl = root.querySelector('#reply-text');
+  const errorEl = root.querySelector('#reply-error');
+  const close = () => {
+    root.innerHTML = '';
   };
+
+  root.querySelector('#reply-cancel').addEventListener('click', close);
+  root.querySelector('#reply-submit').addEventListener('click', async () => {
+    const text = String(textEl?.value || '').trim();
+    if (!text) {
+      errorEl.textContent = 'Введите текст ответа.';
+      return;
     }
 
-function renderPostCard(post) {
+    try {
-  const card = document.createElement('article');
+      await onSubmit(text);
-  card.className = 'card stack';
+      close();
-  card.innerHTML = `<strong>${post.title}</strong><p class="meta-muted">${post.body}</p>`;
+    } catch (error) {
-  return card;
+      errorEl.textContent = toUserMessage(error, 'Не удалось отправить ответ.');
+    }
+  });
+
+  if (textEl) textEl.focus();
 }
 
-function openAddMessageModal({ channelId, channelName, onSubmit }) {
+function openAddMessageModal({ channelName, onSubmit }) {
   const root = document.getElementById('modal-root');
   root.innerHTML = `
     <div class="modal" id="channel-message-modal">
       <div class="modal-card stack">
-        <h3 style="font-size:18px;">Новое сообщение в канал</h3>
+        <h3 class="modal-title">Новое сообщение в канале</h3>
         <p class="meta-muted"># ${channelName}</p>
-        <textarea id="channel-message-text" class="input" rows="6" maxlength="2000" placeholder="Введите текст сообщения"></textarea>
+        <textarea id="channel-message-text" class="input" rows="6" maxlength="2000" placeholder="Текст сообщения"></textarea>
-        <div class="meta-muted" id="channel-message-error" style="min-height:18px;"></div>
+        <div class="meta-muted inline-error" id="channel-message-error"></div>
-        <div style="display:grid; grid-template-columns:1fr 1fr; gap:10px;">
+        <div class="form-actions-grid">
           <button class="secondary-btn" id="channel-message-cancel" type="button">Отмена</button>
           <button class="primary-btn" id="channel-message-submit" type="button">Отправить</button>
         </div>
@@ -54,110 +241,314 @@ function openAddMessageModal({ channelId, channelName, onSubmit }) {
   };
 
   root.querySelector('#channel-message-cancel').addEventListener('click', close);
-  root.querySelector('#channel-message-submit').addEventListener('click', () => {
+  root.querySelector('#channel-message-submit').addEventListener('click', async () => {
-    const body = textEl.value.trim();
+    const body = String(textEl?.value || '').trim();
     if (!body) {
       errorEl.textContent = 'Введите текст сообщения.';
       return;
     }
 
-    onSubmit({
+    try {
-      title: `${state.session.login || 'Вы'} • сейчас`,
+      await onSubmit({
+        title: `${state.session.login || 'вы'} - сейчас`,
         body,
       });
       close();
+    } catch (error) {
+      errorEl.textContent = toUserMessage(error, 'Не удалось отправить сообщение.');
+    }
   });
 
   if (textEl) textEl.focus();
 }
 
-function renderBody(screen, navigate, channelId, channelData) {
+function renderPostCard(post, { navigate, selector, onToggleLike, onReply }) {
+  const card = document.createElement('article');
+  card.className = 'card stack channel-message-card';
+
+  const stats = document.createElement('p');
+  stats.className = 'channel-message-stats';
+  stats.textContent = `Лайки: ${post.likesCount || 0}, ответы: ${post.repliesCount || 0}`;
+
+  card.innerHTML = `<strong class="channel-message-title">${post.title}</strong><p class="channel-message-body">${post.body}</p>`;
+  card.append(stats);
+
+  if (!post.messageRef || !selector) return card;
+
+  const actionKey = makeReactionActionKey(post.messageRef);
+  const isPending = actionKey ? pendingReactionActions.has(actionKey) : false;
+
+  const actions = document.createElement('div');
+  actions.className = 'channel-message-actions';
+
+  const likeButton = document.createElement('button');
+  likeButton.type = 'button';
+  likeButton.className = 'secondary-btn channel-action-like';
+  const isLiked = post.reactionState === 'liked';
+  if (isLiked) likeButton.classList.add('is-liked');
+  likeButton.textContent = isPending ? 'Выполняется...' : (isLiked ? 'Убрать лайк' : 'Лайк');
+  likeButton.disabled = isPending;
+  likeButton.addEventListener('click', async () => {
+    if (isPending) return;
+    await onToggleLike(post.messageRef, isLiked ? 'unlike' : 'like');
+  });
+
+  const replyButton = document.createElement('button');
+  replyButton.type = 'button';
+  replyButton.className = 'secondary-btn channel-action-reply';
+  replyButton.textContent = 'Ответить';
+  replyButton.addEventListener('click', () => {
+    openReplyModal({
+      onSubmit: async (text) => onReply(post.messageRef, text),
+    });
+  });
+
+  const openThreadButton = document.createElement('button');
+  openThreadButton.type = 'button';
+  openThreadButton.className = 'secondary-btn channel-action-thread';
+  openThreadButton.textContent = 'Открыть тред';
+  openThreadButton.addEventListener('click', () => {
+    const route = buildThreadRoute(post.messageRef, selector);
+    if (route) navigate(route);
+  });
+
+  actions.append(likeButton, replyButton, openThreadButton);
+  card.append(actions);
+  return card;
+}
+
+function renderBody(screen, navigate, channelData, handlers) {
   const head = document.createElement('div');
-  head.className = 'card';
+  head.className = 'card channel-head-card';
   head.innerHTML = `
-    <strong># ${channelData.channel.name}</strong>
+    <strong class="channel-head-title">${channelData.channel.displayName || channelData.channel.name}</strong>
-    <p class="meta-muted" style="margin-top:4px;">${channelData.channel.description}</p>
+    <p class="channel-head-meta">${channelData.channel.description}</p>
-    <p class="meta-muted" style="margin-top:8px;">Владелец: ${channelData.channel.ownerName}</p>
+    <p class="channel-head-meta">Владелец: ${channelData.channel.ownerName}</p>
+    <p class="channel-note">Состояние лайка обновляется после подтверждённого reread с сервера.</p>
   `;
 
   const actionButton = document.createElement('button');
-  actionButton.className = channelData.isOwnChannel ? 'primary-btn' : 'secondary-btn';
+  actionButton.className = channelData.isOwnChannel
-  actionButton.textContent = channelData.isOwnChannel ? 'Добавить сообщение в канал' : 'Отписаться от канала';
+    ? 'primary-btn channel-main-action'
+    : 'destructive-btn channel-main-action';
+  actionButton.textContent = channelData.isOwnChannel ? 'Добавить сообщение' : 'Отписаться от канала';
+  let followLimit = null;
 
   const feed = document.createElement('div');
-  feed.className = 'stack';
+  feed.className = 'stack channel-feed';
 
   channelData.posts.forEach((post) => {
-    feed.append(renderPostCard(post));
+    feed.append(renderPostCard(post, {
+      navigate,
+      selector: channelData.selector,
+      onToggleLike: handlers.onToggleLike,
+      onReply: handlers.onReply,
+    }));
   });
 
   if (channelData.isOwnChannel) {
     actionButton.addEventListener('click', () => {
       openAddMessageModal({
-        channelId,
         channelName: channelData.channel.name,
-        onSubmit: (post) => {
+        onSubmit: async (post) => handlers.onAddPost(post),
-          addLocalChannelPost(channelId, post);
-          channelData.posts.push(post);
-          feed.append(renderPostCard(post));
-        },
       });
     });
+  } else {
+    followLimit = document.createElement('p');
+    followLimit.className = 'channel-note';
+    followLimit.textContent = 'Отписка удаляет только эту подписку на канал.';
+    actionButton.addEventListener('click', handlers.onUnfollowChannel);
   }
 
   const backButton = document.createElement('button');
-  backButton.className = 'secondary-btn';
+  backButton.className = 'secondary-btn channel-back-btn';
-  backButton.textContent = 'Назад к списку';
+  backButton.textContent = 'Назад к каналам';
   backButton.addEventListener('click', () => navigate('channels-list'));
 
+  if (followLimit) {
+    screen.append(head, followLimit, actionButton, feed, backButton);
+    return;
+  }
   screen.append(head, actionButton, feed, backButton);
 }
 
-async function loadFromApi(channelId) {
+async function loadFromApi(route, channelId) {
-  const summary = state.channelsIndex[channelId];
+  const selector = buildSelectorFromRoute(route, channelId);
-  if (!summary) return null;
+  if (!selector?.ownerBlockchainName || selector.channelRootBlockNumber == null) {
+    throw new Error('Не удалось определить канал из адреса страницы.');
+  }
 
-  const selector = {
+  const payload = await authService.getChannelMessages(selector, 200, 'asc', state.session.login);
-    ownerBlockchainName: summary.channel?.ownerBlockchainName,
+  const localKey = localPostsKey(selector, channelId);
-    channelRootBlockNumber: summary.channel?.channelRoot?.blockNumber,
-    channelRootBlockHash: summary.channel?.channelRoot?.blockHash,
-  };
-
-  if (!selector.ownerBlockchainName || selector.channelRootBlockNumber == null) return null;
-
-  const payload = await authService.getChannelMessages(selector, 200, 'asc');
   const posts = [
-    ...(payload.messages || []).map(mapApiMessageToPost),
+    ...(payload.messages || []).map((message) => mapApiMessageToPost(message, selector)),
-    ...getLocalChannelPosts(channelId),
+    ...getLocalChannelPosts(localKey),
   ];
 
   return {
     channel: {
-      name: payload.channel?.channelName || summary.channel?.channelName || 'unknown',
+      name: payload.channel?.channelName || 'неизвестный канал',
+      displayName: `${payload.channel?.ownerLogin || 'неизвестно'}/${payload.channel?.channelName || 'неизвестный канал'}`,
       description: `bch=${payload.channel?.ownerBlockchainName || selector.ownerBlockchainName}`,
-      ownerName: payload.channel?.ownerLogin || summary.channel?.ownerLogin || 'unknown',
+      ownerName: payload.channel?.ownerLogin || 'неизвестно',
     },
     posts,
     isOwnChannel: (payload.channel?.ownerLogin || '').toLowerCase() === (state.session.login || '').toLowerCase(),
+    selector,
+    localKey,
   };
 }
 
+function renderLoadError(screen, navigate, message, onRetry) {
+  const card = document.createElement('div');
+  card.className = 'card stack channels-status';
+  card.innerHTML = `
+    <strong>Не удалось загрузить канал</strong>
+    <p class="meta-muted">${message || 'Проверьте подключение к серверу и повторите попытку.'}</p>
+  `;
+
+  const retry = document.createElement('button');
+  retry.type = 'button';
+  retry.className = 'primary-btn';
+  retry.textContent = 'Повторить';
+  retry.addEventListener('click', onRetry);
+
+  const back = document.createElement('button');
+  back.type = 'button';
+  back.className = 'secondary-btn';
+  back.textContent = 'Назад к каналам';
+  back.addEventListener('click', () => navigate('channels-list'));
+
+  card.append(retry, back);
+  screen.append(card);
+}
+
+function renderDemoFallback(screen, navigate, channelId, error) {
+  const info = document.createElement('div');
+  info.className = 'card stack';
+  info.innerHTML = `
+    <strong>Включен демо-режим</strong>
+    <p class="meta-muted">Данные канала с сервера недоступны. Показан мок-канал, потому что включен channelsDemo.</p>
+    <p class="meta-muted">${toUserMessage(error, 'Ошибка API/WS')}</p>
+  `;
+  screen.append(info);
+
+  renderBody(screen, navigate, findMockChannel(channelId || 'ch1'), {
+    onToggleLike: async () => {},
+    onReply: async () => {},
+    onAddPost: async (post) => {
+      addLocalChannelPost(channelId || 'ch1', post);
+    },
+    onUnfollowChannel: () => {},
+  });
+}
+
 export function render({ navigate, route }) {
-  const channelId = route.params.channelId || 'ch1';
+  const channelId = route.params.channelId || '';
+  const routeSelector = buildSelectorFromRoute(route, channelId);
 
   const screen = document.createElement('section');
-  screen.className = 'stack';
+  screen.className = 'stack channels-screen channels-screen--channel';
 
-  const headerTitle = state.channelsIndex[channelId]?.channel?.channelName
+  const fallbackName = channels.find((c) => c.id === channelId)?.name || 'Канал';
-    ? `Канал: ${state.channelsIndex[channelId].channel.channelName}`
+  const titleFromIndex = state.channelsIndex[channelId]?.channel?.channelName;
-    : `Канал: ${(channels.find((c) => c.id === channelId) || channels[0]).name}`;
+  const ownerFromIndex = state.channelsIndex[channelId]?.channel?.ownerLogin;
+  const titleFromIndexDisplay = (ownerFromIndex && titleFromIndex) ? `${ownerFromIndex}/${titleFromIndex}` : titleFromIndex;
+  const titleFromRoute = route.params.ownerBlockchainName ? String(route.params.ownerBlockchainName) : '';
+  const headerTitle = `Канал: ${titleFromIndexDisplay || titleFromRoute || fallbackName}`;
+
+  const userIndicator = document.createElement('div');
+  userIndicator.className = 'card channels-user-chip';
+  userIndicator.textContent = `Вы вошли как @${state.session.login || 'неизвестно'}`;
+
+  const statusBox = document.createElement('div');
+  statusBox.className = 'card status-line is-unavailable channels-status';
+  statusBox.style.display = 'none';
+
+  const rerender = () => {
+    const current = document.querySelector('section.channels-screen--channel');
+    if (!current) return;
+    const next = render({ navigate, route });
+    current.replaceWith(next);
+  };
+
+  const showStatus = (message) => {
+    if (!message) {
+      statusBox.style.display = 'none';
+      statusBox.textContent = '';
+      return;
+    }
+    statusBox.textContent = message;
+    statusBox.style.display = '';
+  };
+
+  const requireSigningSession = () => {
+    const login = state.session.login;
+    const storagePwd = state.session.storagePwdInMemory;
+    if (!login || !storagePwd) {
+      throw new Error('Сессия недействительна. Выполните вход заново.');
+    }
+    return { login, storagePwd };
+  };
+
+  const rereadChannel = async () => {
+    await loadFromApi(route, channelId);
+  };
+
+  const onToggleLike = async (messageRef, action) => {
+    const actionKey = makeReactionActionKey(messageRef);
+    if (!actionKey) {
+      throw new Error('Некорректная ссылка на сообщение для реакции.');
+    }
+    if (pendingReactionActions.has(actionKey)) return;
+
+    pendingReactionActions.add(actionKey);
+    rerender();
+    try {
+      const { login, storagePwd } = requireSigningSession();
+      if (action === 'unlike') {
+        await authService.addBlockUnlike({ login, storagePwd, message: messageRef });
+      } else {
+        await authService.addBlockLike({ login, storagePwd, message: messageRef });
+      }
+      await rereadChannel();
+      showStatus('');
+    } finally {
+      pendingReactionActions.delete(actionKey);
+      rerender();
+    }
+  };
+
+  const onReply = async (messageRef, text) => {
+    const { login, storagePwd } = requireSigningSession();
+    await authService.addBlockReply({ login, storagePwd, message: messageRef, text });
+    await rereadChannel();
+    rerender();
+  };
+
+  const onAddPost = async (post) => {
+    const { login, storagePwd } = requireSigningSession();
+    if (!routeSelector?.ownerBlockchainName || routeSelector.channelRootBlockNumber == null) {
+      throw new Error('Идентификатор канала не готов.');
+    }
+
+    await authService.addBlockTextPost({
+      login,
+      storagePwd,
+      channel: routeSelector,
+      text: post?.body || '',
+    });
+    await rereadChannel();
+    rerender();
+  };
 
   screen.append(
     renderHeader({
       title: headerTitle,
-      leftAction: { label: '←', onClick: () => navigate('channels-list') },
+      leftAction: { label: '<', onClick: () => navigate('channels-list') },
     })
   );
+  screen.append(userIndicator, statusBox);
 
   const loading = document.createElement('div');
   loading.className = 'card meta-muted';
@@ -166,18 +557,60 @@ export function render({ navigate, route }) {
 
   (async () => {
     try {
-      const apiData = await loadFromApi(channelId);
+      const apiData = await loadFromApi(route, channelId);
       loading.remove();
-      if (apiData) {
+      renderBody(screen, navigate, apiData, {
-        renderBody(screen, navigate, channelId, apiData);
+        onToggleLike: async (messageRef, action) => {
+          try {
+            await onToggleLike(messageRef, action);
+          } catch (error) {
+            showStatus(toUserMessage(error, action === 'unlike' ? 'Не удалось убрать лайк.' : 'Не удалось поставить лайк.'));
+          }
+        },
+        onReply: async (messageRef, text) => {
+          try {
+            await onReply(messageRef, text);
+            showStatus('');
+          } catch (error) {
+            throw new Error(toUserMessage(error, 'Не удалось отправить ответ.'));
+          }
+        },
+        onAddPost: async (post) => {
+          try {
+            await onAddPost(post);
+            showStatus('');
+          } catch (error) {
+            throw new Error(toUserMessage(error, 'Не удалось добавить сообщение.'));
+          }
+        },
+        onUnfollowChannel: async () => {
+          try {
+            const { login, storagePwd } = requireSigningSession();
+            if (!apiData.selector) throw new Error('Не удалось определить канал для отписки.');
+
+            await authService.addBlockFollowChannel({
+              login,
+              storagePwd,
+              targetBlockchainName: apiData.selector.ownerBlockchainName,
+              targetBlockNumber: apiData.selector.channelRootBlockNumber,
+              targetBlockHashHex: apiData.selector.channelRootBlockHash,
+              unfollow: true,
+            });
+
+            navigate('channels-list');
+          } catch (error) {
+            showStatus(toUserMessage(error, 'Не удалось отписаться от канала.'));
+          }
+        },
+      });
+    } catch (error) {
+      loading.remove();
+      if (isChannelsDemoMode()) {
+        renderDemoFallback(screen, navigate, channelId, error);
         return;
       }
-    } catch {
+      renderLoadError(screen, navigate, toUserMessage(error, 'Не удалось загрузить канал.'), rerender);
-      // fallback to mock below
     }
-
-    loading.remove();
-    renderBody(screen, navigate, channelId, findMockChannel(channelId));
   })();
 
   return screen;

shine-UI/js/pages/channels-list.js

@@ -1,31 +1,36 @@
-import { renderHeader } from '../components/header.js';
+import { renderHeader } from '../components/header.js';
 import { channels as mockChannels } from '../mock-data.js';
 import { authService, setChannelsFeed, state } from '../state.js';
+import { toUserMessage } from '../services/ui-error-texts.js';
 
 export const pageMeta = { id: 'channels-list', title: 'Каналы' };
+const CREATE_CHANNEL_FLASH_KEY = 'shine-channels-create-success';
 
-function openSimpleSubscribeModal(kindLabel) {
+function isChannelsDemoMode() {
-  const root = document.getElementById('modal-root');
+  try {
-  root.innerHTML = `
+    const qs = new URLSearchParams(window.location.search);
-    <div class="modal" id="channels-subscribe-modal">
+    if (qs.get('channelsDemo') === '1') return true;
-      <div class="modal-card stack">
+    return localStorage.getItem('shine-channels-demo') === '1';
-        <h3 style="font-size:18px;">${kindLabel}</h3>
+  } catch {
-        <label class="meta-muted" for="subscribe-input">Введите идентификатор</label>
+    return false;
-        <input id="subscribe-input" class="input" placeholder="@login или #канал" />
+  }
-        <div style="display:grid; grid-template-columns:1fr 1fr; gap:10px;">
+}
-          <button class="secondary-btn" id="sub-cancel">Отмена</button>
-          <button class="primary-btn" id="sub-submit">Подписаться</button>
-        </div>
-      </div>
-    </div>
-  `;
 
-  const close = () => {
+function normalizeHash(hash) {
-    root.innerHTML = '';
+  const normalized = String(hash || '').trim().toLowerCase();
-  };
+  return normalized || '0';
+}
 
-  root.querySelector('#sub-cancel').addEventListener('click', close);
+function encodeRoutePart(value = '') {
-  root.querySelector('#sub-submit').addEventListener('click', close);
+  return encodeURIComponent(String(value));
+}
+
+function buildChannelRouteFromSummary(summary, fallbackId) {
+  const ownerBch = summary?.channel?.ownerBlockchainName;
+  const rootBlockNumber = summary?.channel?.channelRoot?.blockNumber;
+  const rootBlockHash = normalizeHash(summary?.channel?.channelRoot?.blockHash);
+  if (!ownerBch || rootBlockNumber == null) return `channel-view/${fallbackId}`;
+  return `channel-view/${encodeRoutePart(ownerBch)}/${Number(rootBlockNumber)}/${rootBlockHash}`;
 }
 
 function initialsFromName(name = '') {
@@ -33,30 +38,202 @@ function initialsFromName(name = '') {
   return (parts[0]?.[0] || '#') + (parts[1]?.[0] || '');
 }
 
+function allFeedSummaries() {
+  const feed = state.channelsFeed || {};
+  return [
+    ...(feed.ownedChannels || []),
+    ...(feed.followedUsersChannels || []),
+    ...(feed.followedChannels || []),
+  ];
+}
+
+function resolveChannelTargetFromInput(rawInput) {
+  const input = String(rawInput || '').trim();
+  if (!input) return null;
+
+  const bySelector = input.match(/^([A-Za-z0-9._-]+-\d+)\s*[:/]\s*(\d+)\s*[:/]\s*([A-Fa-f0-9]{1,64})$/);
+  if (bySelector) {
+    return {
+      ownerBlockchainName: bySelector[1],
+      rootBlockNumber: Number(bySelector[2]),
+      rootBlockHash: normalizeHash(bySelector[3]),
+    };
+  }
+
+  const summaries = allFeedSummaries();
+
+  const byOwnerAndName = input.match(/^@?([^/#\s]+)\s*\/\s*#?(.+)$/);
+  if (byOwnerAndName) {
+    const owner = byOwnerAndName[1].trim().toLowerCase();
+    const channelName = byOwnerAndName[2].trim().toLowerCase();
+    const match = summaries.find((summary) => (
+      String(summary?.channel?.ownerLogin || '').toLowerCase() === owner
+      && String(summary?.channel?.channelName || '').toLowerCase() === channelName
+    ));
+    if (!match) return null;
+    return {
+      ownerBlockchainName: match.channel?.ownerBlockchainName,
+      rootBlockNumber: Number(match.channel?.channelRoot?.blockNumber),
+      rootBlockHash: normalizeHash(match.channel?.channelRoot?.blockHash),
+    };
+  }
+
+  const byNameOnly = input.replace(/^#/, '').trim().toLowerCase();
+  if (!byNameOnly) return null;
+
+  const matches = summaries.filter((summary) => (
+    String(summary?.channel?.channelName || '').toLowerCase() === byNameOnly
+  ));
+
+  if (matches.length !== 1) return null;
+
+  return {
+    ownerBlockchainName: matches[0].channel?.ownerBlockchainName,
+    rootBlockNumber: Number(matches[0].channel?.channelRoot?.blockNumber),
+    rootBlockHash: normalizeHash(matches[0].channel?.channelRoot?.blockHash),
+  };
+}
+
+function openSimpleSubscribeModal({ kind, kindLabel, submitLabel, unfollow = false, onSuccess }) {
+  const targetHint = kind === 'channel'
+    ? '<p class="meta-muted">Цель канала: owner/channel или bch:number:hash.</p>'
+    : '<p class="meta-muted">Цель пользователя: @login.</p>';
+  const submitText = submitLabel || (unfollow ? 'Отписаться' : 'Подписаться');
+  const placeholder = kind === 'channel' ? '@owner/#channel или bch:number:hash' : '@login';
+
+  const root = document.getElementById('modal-root');
+  root.innerHTML = `
+    <div class="modal" id="channels-subscribe-modal">
+      <div class="modal-card stack">
+        <h3 class="modal-title">${kindLabel}</h3>
+        ${targetHint}
+        <label class="meta-muted" for="subscribe-input">Идентификатор</label>
+        <input id="subscribe-input" class="input" placeholder="${placeholder}" />
+        <div id="subscribe-error" class="meta-muted inline-error"></div>
+        <div class="form-actions-grid">
+          <button class="secondary-btn" id="sub-cancel" type="button">Отмена</button>
+          <button class="primary-btn" id="sub-submit" type="button">${submitText}</button>
+        </div>
+      </div>
+    </div>
+  `;
+
+  const inputEl = root.querySelector('#subscribe-input');
+  const errorEl = root.querySelector('#subscribe-error');
+  const submitEl = root.querySelector('#sub-submit');
+
+  const close = () => {
+    root.innerHTML = '';
+  };
+
+  root.querySelector('#sub-cancel').addEventListener('click', close);
+
+  submitEl.addEventListener('click', async () => {
+    const login = state.session.login;
+    const storagePwd = state.session.storagePwdInMemory;
+    const value = String(inputEl?.value || '').trim();
+
+    if (!login || !storagePwd) {
+      errorEl.textContent = 'Сессия недействительна. Выполните вход заново.';
+      return;
+    }
+
+    if (!value) {
+      errorEl.textContent = 'Введите идентификатор.';
+      return;
+    }
+
+    submitEl.disabled = true;
+    errorEl.textContent = '';
+
+    try {
+      if (kind === 'user') {
+        await authService.addBlockFollowUser({
+          login,
+          targetLogin: value.replace(/^@+/, ''),
+          storagePwd,
+          unfollow,
+        });
+      } else if (kind === 'channel') {
+        const target = resolveChannelTargetFromInput(value);
+        if (!target?.ownerBlockchainName || !Number.isFinite(target.rootBlockNumber)) {
+          throw new Error('Канал не найден. Используйте owner/channel или bch:number:hash.');
+        }
+
+        await authService.addBlockFollowChannel({
+          login,
+          storagePwd,
+          targetBlockchainName: target.ownerBlockchainName,
+          targetBlockNumber: target.rootBlockNumber,
+          targetBlockHashHex: target.rootBlockHash,
+          unfollow,
+        });
+      } else {
+        throw new Error('Неподдерживаемый тип подписки');
+      }
+
+      close();
+      if (typeof onSuccess === 'function') onSuccess();
+    } catch (error) {
+      errorEl.textContent = toUserMessage(error, `${submitText} не удалось.`);
+      submitEl.disabled = false;
+    }
+  });
+
+  if (inputEl) inputEl.focus();
+}
+
 function mapMockGroups() {
-  const ownChannels = mockChannels.filter((channel) => channel.kind === 'own-personal' || channel.kind === 'own');
+  const mapRow = (channel) => ({
-  const followedUserChannels = mockChannels.filter((channel) => channel.kind === 'followed-user-channel');
+    ...channel,
-  const subscribedChannels = mockChannels.filter((channel) => channel.kind === 'subscribed');
+    route: `channel-view/${channel.id}`,
+  });
+
+  const ownChannels = mockChannels
+    .filter((channel) => channel.kind === 'own-personal' || channel.kind === 'own')
+    .map(mapRow);
+  const followedUserChannels = mockChannels
+    .filter((channel) => channel.kind === 'followed-user-channel')
+    .map(mapRow);
+  const subscribedChannels = mockChannels
+    .filter((channel) => channel.kind === 'subscribed')
+    .map(mapRow);
+
   return { ownChannels, followedUserChannels, subscribedChannels, index: {} };
 }
 
 function mapApiChannelRow(summary, bucketKey, idx, index) {
   const rowId = `${bucketKey}-${idx}`;
   index[rowId] = summary;
+  const ownerLogin = summary.channel?.ownerLogin || 'неизвестно';
+  const channelName = summary.channel?.channelName || '(без названия)';
+  const displayName = `${ownerLogin}/${channelName}`;
 
   return {
     id: rowId,
     source: 'api',
-    ownerName: summary.channel?.ownerLogin || 'unknown',
+    route: buildChannelRouteFromSummary(summary, rowId),
-    initials: initialsFromName(summary.channel?.channelName || summary.channel?.ownerLogin || '?'),
+    ownerName: ownerLogin,
-    name: summary.channel?.channelName || '(без имени)',
+    initials: initialsFromName(channelName || ownerLogin || '?'),
-    description: `owner=${summary.channel?.ownerLogin || '-'} / bch=${summary.channel?.ownerBlockchainName || '-'}`,
+    name: channelName,
+    displayName,
+    description: `bch=${summary.channel?.ownerBlockchainName || '-'}`,
     lastMessage: summary.lastMessage?.text || 'Сообщений пока нет',
-    time: summary.lastMessage?.createdAtMs ? new Date(summary.lastMessage.createdAtMs).toLocaleString('ru-RU') : '—',
+    time: summary.lastMessage?.createdAtMs ? new Date(summary.lastMessage.createdAtMs).toLocaleString('ru-RU') : '-',
     messagesCount: summary.messagesCount || 0,
   };
 }
 
+function pullCreateSuccessFlash() {
+  try {
+    const value = String(sessionStorage.getItem(CREATE_CHANNEL_FLASH_KEY) || '').trim();
+    if (value) sessionStorage.removeItem(CREATE_CHANNEL_FLASH_KEY);
+    return value;
+  } catch {
+    return '';
+  }
+}
+
 function mapApiFeed(feed) {
   const index = {};
 
@@ -77,40 +254,48 @@ function mapApiFeed(feed) {
 
 function renderChannelRow(channel, navigate) {
   const row = document.createElement('article');
-  row.className = 'list-item';
+  row.className = 'channel-row';
   row.innerHTML = `
     <div class="avatar">${channel.initials}</div>
-    <div>
+    <div class="channel-row-main">
-      <strong># ${channel.name}</strong>
+      <strong class="channel-row-title">${channel.displayName || channel.name}</strong>
-      <p class="meta-muted" style="margin-top:4px;">${channel.description}</p>
+      <p class="channel-row-description">${channel.description}</p>
-      <p class="meta-muted" style="margin-top:6px; color:#d8e3ff;">${channel.lastMessage}</p>
+      <p class="channel-row-message">${channel.lastMessage}</p>
-      <p class="meta-muted" style="margin-top:6px;">Владелец: ${channel.ownerName}</p>
+      <p class="channel-row-owner">Владелец: ${channel.ownerName}</p>
     </div>
-    <div style="display:grid; justify-items:end; gap:6px;">
+    <div class="channel-row-meta">
-      <span class="badge alt" style="padding:4px 8px; font-size:10px;">Канал</span>
+      <span class="channel-row-kind">Канал</span>
-      <span class="meta-muted">${channel.time}</span>
+      <span class="channel-row-time">${channel.time}</span>
-      <span class="unread">${channel.messagesCount}</span>
+      <span class="unread channel-row-count">${channel.messagesCount}</span>
     </div>
   `;
-  row.addEventListener('click', () => navigate(`channel-view/${channel.id}`));
+  row.addEventListener('click', () => navigate(channel.route || `channel-view/${channel.id}`));
   return row;
 }
 
 function renderSection(title, items, navigate) {
   const wrap = document.createElement('section');
-  wrap.className = 'stack';
+  wrap.className = 'stack channels-section';
 
   const header = document.createElement('h3');
   header.className = 'section-title';
   header.textContent = title;
 
   wrap.append(header);
+  if (!items.length) {
+    const empty = document.createElement('div');
+    empty.className = 'channels-list-empty';
+    empty.textContent = 'Пока пусто.';
+    wrap.append(empty);
+    return wrap;
+  }
+
   items.forEach((channel) => wrap.append(renderChannelRow(channel, navigate)));
 
   return wrap;
 }
 
-function renderGroupedList(screen, navigate, groups) {
+function renderGroupedList(container, navigate, groups) {
   const listWrap = document.createElement('div');
   listWrap.className = 'channels-scroll-wrap';
 
@@ -123,17 +308,17 @@ function renderGroupedList(screen, navigate, groups) {
   dividerOne.className = 'channels-divider';
   list.append(dividerOne);
 
-  list.append(renderSection('Каналы пользователей, на кого вы подписаны', groups.followedUserChannels, navigate));
+  list.append(renderSection('Каналы пользователей, на которых я подписан', groups.followedUserChannels, navigate));
 
   const dividerTwo = document.createElement('hr');
   dividerTwo.className = 'channels-divider';
   list.append(dividerTwo);
 
-  list.append(renderSection('Каналы, на которые вы подписаны', groups.subscribedChannels, navigate));
+  list.append(renderSection('Каналы, на которые я подписан', groups.subscribedChannels, navigate));
 
   const addChannelButton = document.createElement('button');
-  addChannelButton.className = 'primary-btn';
+  addChannelButton.className = 'primary-btn channels-bottom-action';
-  addChannelButton.textContent = 'Добавить канал';
+  addChannelButton.textContent = 'Создать канал';
   addChannelButton.addEventListener('click', () => navigate('add-channel-view'));
 
   list.append(addChannelButton);
@@ -142,43 +327,195 @@ function renderGroupedList(screen, navigate, groups) {
   scrollHint.className = 'channels-scroll-hint';
 
   listWrap.append(list, scrollHint);
-  screen.append(listWrap);
+  container.append(listWrap);
 }
 
-async function loadFeedAndRender(screen, navigate) {
+function renderErrorState(container, error, onRetry) {
+  const errCard = document.createElement('div');
+  errCard.className = 'card stack channels-status';
+
+  const title = document.createElement('strong');
+  title.textContent = 'Не удалось загрузить каналы';
+
+  const details = document.createElement('p');
+  details.className = 'meta-muted';
+  details.textContent = toUserMessage(error, 'Проверьте подключение к серверу и повторите попытку.');
+
+  const retry = document.createElement('button');
+  retry.className = 'primary-btn';
+  retry.type = 'button';
+  retry.textContent = 'Повторить';
+  retry.addEventListener('click', onRetry);
+
+  errCard.append(title, details, retry);
+  container.append(errCard);
+}
+
+function renderDemoFallback(container, navigate, error, onRetry) {
+  const info = document.createElement('div');
+  info.className = 'card stack';
+  info.innerHTML = `
+    <strong>Включен демо-режим</strong>
+    <p class="meta-muted">Данные сервера недоступны. Показаны мок-каналы, потому что включен channelsDemo.</p>
+    <p class="meta-muted">${toUserMessage(error, 'Ошибка API/WS')}</p>
+  `;
+
+  const retry = document.createElement('button');
+  retry.className = 'secondary-btn';
+  retry.type = 'button';
+  retry.textContent = 'Повторить запрос к серверу';
+  retry.addEventListener('click', onRetry);
+
+  info.append(retry);
+  container.append(info);
+  renderGroupedList(container, navigate, mapMockGroups());
+}
+
+async function loadFeedAndRender(container, navigate) {
+  container.innerHTML = '';
+
   const status = document.createElement('div');
   status.className = 'card meta-muted';
-  status.textContent = 'Загрузка каналов с сервера...';
+  status.textContent = 'Загрузка каналов...';
-  screen.append(status);
+  container.append(status);
 
   try {
     if (!state.session.login) throw new Error('not_authorized');
     const feed = await authService.listSubscriptionsFeed(state.session.login, 200);
     const groups = mapApiFeed(feed);
     setChannelsFeed(feed, groups.index);
-    status.remove();
+
-    renderGroupedList(screen, navigate, groups);
+    container.innerHTML = '';
-  } catch {
+    renderGroupedList(container, navigate, groups);
+  } catch (error) {
     setChannelsFeed(null, {});
-    status.textContent = 'Сервер недоступен или нет данных. Показаны демо-каналы.';
+    container.innerHTML = '';
-    renderGroupedList(screen, navigate, mapMockGroups());
+    if (isChannelsDemoMode()) {
+      renderDemoFallback(container, navigate, error, () => loadFeedAndRender(container, navigate));
+      return;
+    }
+    renderErrorState(container, error, () => loadFeedAndRender(container, navigate));
   }
 }
 
 export function render({ navigate }) {
   const screen = document.createElement('section');
-  screen.className = 'stack';
+  screen.className = 'stack channels-screen channels-screen--list';
+  const createSuccessFlash = pullCreateSuccessFlash();
+  const hero = document.createElement('div');
+  hero.className = 'card channels-hero';
+  hero.innerHTML = `
+    <div class="channels-hero-emblem" aria-hidden="true"></div>
+    <div class="channels-hero-copy">
+      <p class="channels-hero-kicker">SHiNE</p>
+      <p class="channels-hero-title">Каналы</p>
+      <p class="channels-hero-subtitle">Ленты, треды и подписки в одном экране.</p>
+    </div>
+  `;
+
+  const currentUser = document.createElement('div');
+  currentUser.className = 'card channels-user-chip';
+  currentUser.textContent = `Вы вошли как @${state.session.login || 'неизвестно'}`;
+
+  let flashCard = null;
+  if (createSuccessFlash) {
+    flashCard = document.createElement('div');
+    flashCard.className = 'card status-line is-available';
+    flashCard.textContent = createSuccessFlash;
+  }
+
+  const help = document.createElement('div');
+  help.className = 'card stack channels-help-card';
+  help.innerHTML = `
+    <strong>Быстрый ручной тест</strong>
+    <p class="meta-muted">
+      1) Создайте пользователей A и B.<br />
+      2) Под A создайте 2 канала и сообщения.<br />
+      3) Под B проверьте follow/unfollow user и channel.<br />
+      4) Откройте канал: проверьте like/unlike, reply и thread.
+    </p>
+  `;
+
+  const content = document.createElement('div');
+  const refresh = () => {
+    loadFeedAndRender(content, navigate);
+  };
 
   screen.append(
     renderHeader({
       title: 'Каналы',
-      rightActions: [
-        { label: 'Подписаться на человека', onClick: () => openSimpleSubscribeModal('Подписка на человека') },
-        { label: 'Подписаться на канал', onClick: () => openSimpleSubscribeModal('Подписка на канал') },
-      ],
     })
   );
 
-  loadFeedAndRender(screen, navigate);
+  const actions = document.createElement('div');
+  actions.className = 'channels-action-grid';
+
+  const actionButtons = [
+    {
+      label: 'Подписаться на пользователя',
+      className: 'primary-btn channels-action-btn',
+      onClick: () => openSimpleSubscribeModal({
+        kind: 'user',
+        kindLabel: 'Подписка на пользователя',
+        submitLabel: 'Подписаться',
+        onSuccess: refresh,
+      }),
+    },
+    {
+      label: 'Отписаться от пользователя',
+      className: 'destructive-btn channels-action-btn',
+      onClick: () => openSimpleSubscribeModal({
+        kind: 'user',
+        kindLabel: 'Отписка от пользователя',
+        submitLabel: 'Отписаться',
+        unfollow: true,
+        onSuccess: refresh,
+      }),
+    },
+    {
+      label: 'Подписаться на канал',
+      className: 'primary-btn channels-action-btn',
+      onClick: () => openSimpleSubscribeModal({
+        kind: 'channel',
+        kindLabel: 'Подписка на канал',
+        submitLabel: 'Подписаться',
+        onSuccess: refresh,
+      }),
+    },
+    {
+      label: 'Отписаться от канала',
+      className: 'destructive-btn channels-action-btn',
+      onClick: () => openSimpleSubscribeModal({
+        kind: 'channel',
+        kindLabel: 'Отписка от канала',
+        submitLabel: 'Отписаться',
+        unfollow: true,
+        onSuccess: refresh,
+      }),
+    },
+  ];
+
+  actionButtons.forEach((config) => {
+    const btn = document.createElement('button');
+    btn.type = 'button';
+    btn.className = config.className;
+    btn.textContent = config.label;
+    btn.addEventListener('click', config.onClick);
+    actions.append(btn);
+  });
+
+  const limitations = document.createElement('div');
+  limitations.className = 'channels-info-strip';
+  limitations.textContent = 'Подписка на пользователя и подписка на конкретный канал работают независимо.';
+
+  screen.append(hero);
+  screen.append(actions);
+  screen.append(currentUser);
+  if (flashCard) screen.append(flashCard);
+  screen.append(help);
+  screen.append(limitations);
+  screen.append(content);
+  refresh();
   return screen;
 }
+

shine-UI/js/pages/login-password-view.js

@@ -6,6 +6,7 @@ import {
   setAuthError,
   state,
 } from '../state.js';
+import { toUserMessage } from '../services/ui-error-texts.js';
 
 export const pageMeta = { id: 'login-password-view', title: 'Войти по логину', showAppChrome: false };
 
@@ -32,7 +33,11 @@ export function render({ navigate }) {
 
   const hint = document.createElement('p');
   hint.className = 'meta-muted';
-  hint.textContent = 'Root/dev/bch ключи вычисляются из пароля через SHA-256, storagePwd каждый вход приходит с сервера.';
+  hint.textContent = 'Введите логин и пароль. На следующем шаге сохраните ключи на устройстве.';
+
+  const status = document.createElement('p');
+  status.className = 'status-line is-unavailable';
+  status.style.display = 'none';
 
   form.innerHTML = `
     <label class="stack"><span class="field-label">Логин</span></label>
@@ -40,7 +45,7 @@ export function render({ navigate }) {
   `;
   form.children[0].append(loginInput);
   form.children[1].append(passwordInput);
-  form.append(hint);
+  form.append(hint, status);
 
   const actions = document.createElement('div');
   actions.className = 'auth-footer-actions';
@@ -56,11 +61,13 @@ export function render({ navigate }) {
   enterButton.type = 'button';
   enterButton.textContent = 'Войти';
   enterButton.addEventListener('click', async () => {
+    status.style.display = 'none';
     state.loginDraft.login = loginInput.value.trim();
     state.loginDraft.password = passwordInput.value;
 
     if (!state.loginDraft.login || !state.loginDraft.password) {
-      window.alert('Введите логин и пароль');
+      status.textContent = 'Введите логин и пароль.';
+      status.style.display = '';
       return;
     }
 
@@ -81,8 +88,10 @@ export function render({ navigate }) {
       state.registrationDraft.pendingSessionMaterial = result.sessionMaterial;
       navigate('registration-keys-view');
     } catch (error) {
-      setAuthError(error.message);
+      const message = toUserMessage(error, 'Не удалось выполнить вход.');
-      window.alert(error.message);
+      setAuthError(message);
+      status.textContent = message;
+      status.style.display = '';
     } finally {
       setAuthBusy(false);
       enterButton.disabled = false;

shine-UI/js/pages/profile-view.js

@@ -39,6 +39,20 @@ export function render({ navigate }) {
   const card = document.createElement('div');
   card.className = 'card stack';
 
+  const nextStepCard = document.createElement('div');
+  nextStepCard.className = 'card stack';
+  nextStepCard.innerHTML = `
+    <strong>Вы вошли как @${login}</strong>
+    <p class="meta-muted">Следующий шаг для ручной проверки: откройте вкладку «Каналы» в нижнем меню.</p>
+  `;
+
+  const openChannelsButton = document.createElement('button');
+  openChannelsButton.className = 'primary-btn';
+  openChannelsButton.type = 'button';
+  openChannelsButton.textContent = 'Открыть каналы';
+  openChannelsButton.addEventListener('click', () => navigate('channels-list'));
+  nextStepCard.append(openChannelsButton);
+
   const topRow = document.createElement('div');
   topRow.className = 'row';
   topRow.innerHTML = `
@@ -201,7 +215,7 @@ export function render({ navigate }) {
   shineBtn.addEventListener('click', () => onToggleClick('shine'));
 
   card.append(topRow, badgesRow, status, listWrap);
-  screen.append(card);
+  screen.append(nextStepCard, card);
 
   refreshProfileSnapshot();
 

shine-UI/js/pages/register-view.js

@@ -1,5 +1,6 @@
-import { renderHeader } from '../components/header.js';
+import { renderHeader } from '../components/header.js';
 import { authService, clearAuthMessages, state } from '../state.js';
+import { toUserMessage } from '../services/ui-error-texts.js';
 
 export const pageMeta = { id: 'register-view', title: 'Зарегистрироваться', showAppChrome: false };
 
@@ -28,6 +29,10 @@ export function render({ navigate }) {
   statusText.className = 'meta-muted';
   statusText.textContent = 'Проверка логина: не выполнена';
 
+  const formError = document.createElement('p');
+  formError.className = 'status-line is-unavailable';
+  formError.style.display = 'none';
+
   const checkButton = document.createElement('button');
   checkButton.className = 'ghost-btn';
   checkButton.type = 'button';
@@ -37,6 +42,7 @@ export function render({ navigate }) {
     const login = loginInput.value.trim();
     if (!login) {
       statusText.textContent = 'Введите логин';
+      formError.style.display = 'none';
       return false;
     }
 
@@ -47,9 +53,10 @@ export function render({ navigate }) {
       const isFree = await authService.ensureLoginFree(login);
       statusText.textContent = isFree ? 'Логин свободен ✅' : 'Логин уже занят ❌';
       statusText.className = isFree ? 'is-available' : 'is-unavailable';
+      formError.style.display = 'none';
       return isFree;
     } catch (error) {
-      statusText.textContent = error.message;
+      statusText.textContent = toUserMessage(error, 'Не удалось проверить логин');
       statusText.className = 'is-unavailable';
       return false;
     } finally {
@@ -66,7 +73,7 @@ export function render({ navigate }) {
   `;
   form.children[0].append(loginInput);
   form.children[1].append(passwordInput);
-  form.append(checkButton, statusText);
+  form.append(checkButton, statusText, formError);
 
   const actions = document.createElement('div');
   actions.className = 'auth-footer-actions';
@@ -82,9 +89,9 @@ export function render({ navigate }) {
   nextButton.type = 'button';
   nextButton.textContent = 'Далее';
   nextButton.addEventListener('click', async () => {
+    formError.style.display = 'none';
     const isFree = await runAvailabilityCheck();
     if (!isFree) {
-      window.alert('Выберите свободный логин');
       return;
     }
 
@@ -92,7 +99,8 @@ export function render({ navigate }) {
     state.registrationDraft.password = passwordInput.value;
 
     if (!state.registrationDraft.password) {
-      window.alert('Введите пароль');
+      formError.textContent = 'Введите пароль.';
+      formError.style.display = '';
       return;
     }
 

shine-UI/js/pages/registration-keys-view.js

@@ -7,6 +7,7 @@ import {
   setAuthInfo,
   state,
 } from '../state.js';
+import { toUserMessage } from '../services/ui-error-texts.js';
 
 export const pageMeta = { id: 'registration-keys-view', title: 'Сохранение ключей', showAppChrome: false };
 
@@ -31,6 +32,14 @@ export function render({ navigate }) {
   question.className = 'auth-copy';
   question.textContent = 'Какие ключи сохранить в зашифрованном контейнере IndexedDB?';
 
+  const nextStep = document.createElement('p');
+  nextStep.className = 'meta-muted';
+  nextStep.textContent = 'После сохранения откроется профиль. Для проверки откройте вкладку «Каналы».';
+
+  const status = document.createElement('p');
+  status.className = 'status-line is-unavailable';
+  status.style.display = 'none';
+
   const rootToggle = document.createElement('input');
   rootToggle.type = 'checkbox';
   rootToggle.checked = state.keyStorage.saveRoot;
@@ -46,17 +55,17 @@ export function render({ navigate }) {
 
   const rootRow = document.createElement('label');
   rootRow.className = 'checkbox-row';
-  rootRow.append(rootToggle, document.createTextNode('root key'));
+  rootRow.append(rootToggle, document.createTextNode('Ключ root'));
 
   const blockchainRow = document.createElement('label');
   blockchainRow.className = 'checkbox-row';
-  blockchainRow.append(blockchainToggle, document.createTextNode('blockchain.key'));
+  blockchainRow.append(blockchainToggle, document.createTextNode('Ключ blockchain'));
 
   const deviceRow = document.createElement('label');
   deviceRow.className = 'checkbox-row';
-  deviceRow.append(deviceToggle, document.createTextNode('device key (всегда)'));
+  deviceRow.append(deviceToggle, document.createTextNode('Ключ device (всегда)'));
 
-  card.append(title, question, rootRow, blockchainRow, deviceRow);
+  card.append(title, question, nextStep, rootRow, blockchainRow, deviceRow, status);
 
   const actions = document.createElement('div');
   actions.className = 'auth-footer-actions';
@@ -72,6 +81,7 @@ export function render({ navigate }) {
   okButton.type = 'button';
   okButton.textContent = 'OK';
   okButton.addEventListener('click', async () => {
+    status.style.display = 'none';
     try {
       if (!state.registrationDraft.pendingKeyBundle || !state.registrationDraft.pendingSessionMaterial) {
         throw new Error('Сначала завершите шаг регистрации на предыдущем экране');
@@ -117,11 +127,15 @@ export function render({ navigate }) {
       state.registrationDraft.pendingSessionMaterial = null;
 
       await refreshSessions();
-      setAuthInfo(isLoginFlow ? 'Ключи сохранены, вход завершён.' : 'Ключи сохранены, регистрация завершена.');
+      setAuthInfo(isLoginFlow
+        ? `Ключи сохранены. Вы вошли как @${state.registrationDraft.login}. Далее откройте вкладку «Каналы».`
+        : `Ключи сохранены. Регистрация завершена для @${state.registrationDraft.login}. Далее откройте вкладку «Каналы».`);
       navigate('profile-view');
     } catch (error) {
-      setAuthError(error.message);
+      const message = toUserMessage(error, 'Не удалось сохранить ключи на устройстве.');
-      window.alert(error.message);
+      setAuthError(message);
+      status.textContent = message;
+      status.style.display = '';
     }
   });
 

shine-UI/js/pages/registration-payment-view.js

@@ -1,4 +1,4 @@
-import { renderHeader } from '../components/header.js';
+import { renderHeader } from '../components/header.js';
 import {
   authService,
   refreshRegistrationBalance,
@@ -6,9 +6,25 @@ import {
   setAuthInfo,
   state,
 } from '../state.js';
+import { toUserMessage } from '../services/ui-error-texts.js';
 
 export const pageMeta = { id: 'registration-payment-view', title: 'Оплата регистрации', showAppChrome: false };
 
+const MIN_REGISTER_BALANCE_SOL = 0.01;
+
+function parseBalanceSol(value) {
+  const parsed = Number.parseFloat(String(value || '').replace(',', '.'));
+  return Number.isFinite(parsed) ? parsed : 0;
+}
+
+function getCryptoRuntimeState() {
+  const hasCrypto = Boolean(globalThis.crypto);
+  const hasGetRandomValues = Boolean(globalThis.crypto && typeof globalThis.crypto.getRandomValues === 'function');
+  const hasSubtle = Boolean(globalThis.crypto && (globalThis.crypto.subtle || globalThis.crypto.webkitSubtle));
+  const secureContext = window.isSecureContext === true;
+  return { hasCrypto, hasGetRandomValues, hasSubtle, secureContext };
+}
+
 export function render({ navigate }) {
   const screen = document.createElement('section');
   screen.className = 'stack';
@@ -16,6 +32,10 @@ export function render({ navigate }) {
   const card = document.createElement('div');
   card.className = 'card stack';
 
+  const status = document.createElement('p');
+  status.className = 'status-line is-unavailable';
+  status.style.display = 'none';
+
   const walletValue = document.createElement('input');
   walletValue.className = 'input';
   walletValue.type = 'text';
@@ -39,7 +59,9 @@ export function render({ navigate }) {
         copyButton.textContent = 'Скопировать номер';
       }, 1500);
     } catch {
-      window.alert('Не удалось скопировать номер кошелька.');
+      status.className = 'status-line is-unavailable';
+      status.textContent = 'Не удалось скопировать номер кошелька.';
+      status.style.display = '';
     }
   });
 
@@ -73,6 +95,24 @@ export function render({ navigate }) {
   submitButton.type = 'button';
   submitButton.textContent = 'Зарегистрироваться';
   submitButton.addEventListener('click', async () => {
+    status.style.display = 'none';
+
+    const balanceSol = parseBalanceSol(state.registrationPayment.balanceSOL);
+    if (balanceSol < MIN_REGISTER_BALANCE_SOL) {
+      status.className = 'status-line is-unavailable';
+      status.textContent = `Недостаточный баланс для регистрации: ${state.registrationPayment.balanceSOL} SOL. Нужно минимум ${MIN_REGISTER_BALANCE_SOL.toFixed(2)} SOL.`;
+      status.style.display = '';
+      return;
+    }
+
+    const cryptoState = getCryptoRuntimeState();
+    if (!cryptoState.hasCrypto || !cryptoState.hasGetRandomValues || !cryptoState.hasSubtle) {
+      status.className = 'status-line is-unavailable';
+      status.textContent = 'Криптография браузера недоступна. Откройте приложение через HTTPS tunnel или localhost и повторите регистрацию.';
+      status.style.display = '';
+      return;
+    }
+
     try {
       submitButton.disabled = true;
       submitButton.textContent = 'Регистрация...';
@@ -85,12 +125,14 @@ export function render({ navigate }) {
       state.registrationDraft.pendingKeyBundle = result.keyBundle;
       state.registrationDraft.pendingSessionMaterial = result.sessionMaterial;
 
-      setAuthInfo(`Отлично, вы зарегистрировались: ${result.login}`);
+      setAuthInfo(`Регистрация завершена. Вы вошли как @${result.login}. Далее откройте вкладку «Каналы».`);
-      window.alert('Отлично, вы зарегистрировались');
       navigate('registration-keys-view');
     } catch (error) {
-      setAuthError(error.message);
+      const message = toUserMessage(error, 'Не удалось завершить регистрацию.');
-      window.alert(error.message);
+      setAuthError(message);
+      status.className = 'status-line is-unavailable';
+      status.textContent = message;
+      status.style.display = '';
     } finally {
       submitButton.disabled = false;
       submitButton.textContent = 'Зарегистрироваться';
@@ -106,7 +148,7 @@ export function render({ navigate }) {
   `;
   card.children[1].append(walletRow);
   card.children[2].append(balanceRow);
-  card.append(topupButton, submitButton);
+  card.append(topupButton, submitButton, status);
 
   screen.append(
     renderHeader({

shine-UI/js/pages/start-view.js

@@ -1,4 +1,4 @@
-import { clearStartHint, state } from '../state.js';
+import { clearStartHint, state } from '../state.js';
 
 export const pageMeta = { id: 'start-view', title: 'Старт', showAppChrome: false };
 
@@ -40,6 +40,19 @@ export function render({ navigate }) {
 
   screen.append(logo, title);
 
+  const help = document.createElement('div');
+  help.className = 'card auth-status-card';
+  help.innerHTML = `
+    <strong>Локальный тест SHiNE</strong>
+    <p class="meta-muted" style="margin-top:6px;">
+      1) Локально: <code>?localWsPort=7071</code>; через tunnel: <code>?wsUrl=wss://.../ws</code>.<br />
+      2) Зарегистрируйте пользователя A, затем пользователя B.<br />
+      3) Войдите под A, создайте 2 канала и сообщения.<br />
+      4) Войдите под B и проверьте каналы, лайк/анлайк и подписки/отписки.
+    </p>
+  `;
+  screen.append(help);
+
   if (state.startHint) {
     const notice = document.createElement('div');
     notice.className = 'card auth-status-card';

shine-UI/js/router.js

@@ -19,16 +19,51 @@ export function getRoute() {
     return { pageId: '', params: {} };
   }
 
-  const [pageId, dynamicId] = raw.split('/');
+  const segments = raw.split('/').filter(Boolean);
+  const pageId = segments[0] || '';
+  const dynamicId = segments[1] || '';
+
+  const decodePart = (value) => {
+    try {
+      return decodeURIComponent(value || '');
+    } catch {
+      return value || '';
+    }
+  };
 
   if (pageId === 'chat-view') {
     return { pageId, params: { chatId: dynamicId || '' } };
   }
 
   if (pageId === 'channel-view') {
+    if (segments.length >= 4) {
+      return {
+        pageId,
+        params: {
+          ownerBlockchainName: decodePart(segments[1]),
+          channelRootBlockNumber: segments[2] || '',
+          channelRootBlockHash: segments[3] || '',
+          channelId: '',
+        },
+      };
+    }
     return { pageId, params: { channelId: dynamicId || '' } };
   }
 
+  if (pageId === 'channel-thread-view') {
+    return {
+      pageId,
+      params: {
+        messageBlockchainName: decodePart(segments[1]),
+        messageBlockNumber: segments[2] || '',
+        messageBlockHash: segments[3] || '',
+        channelOwnerBlockchainName: decodePart(segments[4]),
+        channelRootBlockNumber: segments[5] || '',
+        channelRootBlockHash: segments[6] || '',
+      },
+    };
+  }
+
   if (pageId === 'device-session-view') {
     return { pageId, params: { sessionId: dynamicId || '' } };
   }
@@ -57,6 +92,6 @@ export function resolveToolbarActive(pageId) {
     return 'profile-view';
   }
   if (pageId === 'chat-view' || pageId === 'contact-search-view') return 'messages-list';
-  if (pageId === 'channel-view' || pageId === 'add-channel-view') return 'channels-list';
+  if (pageId === 'channel-view' || pageId === 'channel-thread-view' || pageId === 'add-channel-view') return 'channels-list';
   return 'profile-view';
 }

shine-UI/js/services/auth-service.js

@@ -12,6 +12,12 @@ import {
   signBase64,
   utf8Bytes,
 } from './crypto-utils.js';
+import {
+  channelNameErrorText,
+  normalizeChannelDisplayName,
+  toCanonicalChannelSlug,
+  validateChannelDisplayName,
+} from './channel-name-rules.js';
 import {
   loadEncryptedUserSecrets,
   loadSessionMaterial,
@@ -20,20 +26,50 @@ import {
 } from './key-vault.js';
 
 const BCH_SUFFIX = '001';
+const ZERO64 = '0'.repeat(64);
+
+const MSG_TYPE_TECH = 0;
+const MSG_TYPE_TEXT = 1;
+const MSG_TYPE_REACTION = 2;
+const MSG_TYPE_CONNECTION = 3;
+
+const MSG_SUBTYPE_TECH_CREATE_CHANNEL = 1;
+const MSG_SUBTYPE_TEXT_POST = 10;
+const MSG_SUBTYPE_TEXT_REPLY = 20;
+const MSG_SUBTYPE_REACTION_LIKE = 1;
+const MSG_SUBTYPE_REACTION_UNLIKE = 2;
+const MSG_SUBTYPE_CONNECTION_FOLLOW = 30;
+const MSG_SUBTYPE_CONNECTION_UNFOLLOW = 31;
 
 function normalizeServerUrl(url) {
   const value = (url || '').trim();
   if (!value) return 'wss://shineup.me/ws';
-  if (value.startsWith('ws://') || value.startsWith('wss://')) return value;
+  if (value.startsWith('ws://') || value.startsWith('wss://')) {
+    try {
+      const parsed = new URL(value);
+      if (!parsed.pathname || parsed.pathname === '/') parsed.pathname = '/ws';
+      return parsed.toString();
+    } catch {
+      return value;
+    }
+  }
   if (value.startsWith('https://') || value.startsWith('http://')) {
+    try {
+      const parsed = new URL(value);
+      parsed.protocol = parsed.protocol === 'https:' ? 'wss:' : 'ws:';
+      if (!parsed.pathname || parsed.pathname === '/') parsed.pathname = '/ws';
+      return parsed.toString();
+    } catch {
       return `${value.replace(/^http/, 'ws').replace(/\/$/, '')}/ws`;
     }
+  }
   return value;
 }
 
 function opError(op, response) {
-  const message = response?.payload?.message || response?.message || 'Неизвестная ошибка сервера';
+  const payload = response?.payload || {};
-  const code = response?.payload?.code || response?.code || 'UNKNOWN';
+  const message = payload?.message || response?.message || payload?.error || response?.error || 'Unknown server error';
+  const code = String(payload?.code || response?.code || payload?.error || response?.error || 'UNKNOWN').toUpperCase();
   const error = new Error(`${op}: ${message} (${code})`);
   error.op = op;
   error.code = code;
@@ -51,11 +87,21 @@ function hexToBytes(hex) {
   if (!clean || clean.length % 2 !== 0) throw new Error('Некорректный hex');
   const out = new Uint8Array(clean.length / 2);
   for (let i = 0; i < out.length; i += 1) {
-    out[i] = Number.parseInt(clean.slice(i * 2, i * 2 + 2), 16);
+    const byte = Number.parseInt(clean.slice(i * 2, i * 2 + 2), 16);
+    if (Number.isNaN(byte)) throw new Error('Некорректный hex');
+    out[i] = byte;
   }
   return out;
 }
 
+function normalizeHex32(value, fallback = ZERO64) {
+  const raw = String(value || '').trim().toLowerCase();
+  if (!raw) return fallback;
+  if (/^0+$/.test(raw)) return ZERO64;
+  if (!/^[0-9a-f]{64}$/.test(raw)) throw new Error('Bad hash32 format');
+  return raw;
+}
+
 function concatBytes(...chunks) {
   const total = chunks.reduce((sum, chunk) => sum + chunk.length, 0);
   const out = new Uint8Array(total);
@@ -81,6 +127,12 @@ function int16Bytes(value) {
   return bytes;
 }
 
+function int8Byte(value) {
+  const n = Number(value);
+  if (!Number.isFinite(n) || n < 0 || n > 255) throw new Error('Bad uint8 value');
+  return new Uint8Array([n & 0xff]);
+}
+
 function int64Bytes(value) {
   const bytes = new Uint8Array(8);
   const view = new DataView(bytes.buffer);
@@ -107,10 +159,179 @@ function makeUserParamBodyBytes({ lineCode, prevLineNumber, prevLineHashHex, thi
   );
 }
 
+function makeReactionLikeBodyBytes({ toBlockchainName, toBlockNumber, toBlockHashHex }) {
+  const cleanBch = String(toBlockchainName || '').trim();
+  if (!cleanBch) throw new Error('toBlockchainName is required for like');
+
+  const blockNumber = Number(toBlockNumber);
+  if (!Number.isFinite(blockNumber) || blockNumber < 0) {
+    throw new Error('Invalid toBlockNumber for like');
+  }
+
+  const bchBytes = utf8Bytes(cleanBch);
+  if (bchBytes.length < 1 || bchBytes.length > 255) {
+    throw new Error('toBlockchainName must be 1..255 bytes');
+  }
+
+  return concatBytes(
+    int8Byte(bchBytes.length),
+    bchBytes,
+    int32Bytes(blockNumber),
+    hexToBytes(normalizeHex32(toBlockHashHex))
+  );
+}
+
+function makeTextReplyBodyBytes({ toBlockchainName, toBlockNumber, toBlockHashHex, text }) {
+  const cleanBch = String(toBlockchainName || '').trim();
+  if (!cleanBch) throw new Error('toBlockchainName is required for reply');
+
+  const blockNumber = Number(toBlockNumber);
+  if (!Number.isFinite(blockNumber) || blockNumber < 0) {
+    throw new Error('Invalid toBlockNumber for reply');
+  }
+
+  const message = String(text || '').trim();
+  if (!message) throw new Error('Reply text is required');
+
+  const bchBytes = utf8Bytes(cleanBch);
+  if (bchBytes.length < 1 || bchBytes.length > 255) {
+    throw new Error('toBlockchainName must be 1..255 bytes');
+  }
+
+  const textBytes = utf8Bytes(message);
+  if (textBytes.length < 1 || textBytes.length > 65535) {
+    throw new Error('Reply text must be 1..65535 UTF-8 bytes');
+  }
+
+  return concatBytes(
+    int8Byte(bchBytes.length),
+    bchBytes,
+    int32Bytes(blockNumber),
+    hexToBytes(normalizeHex32(toBlockHashHex)),
+    int16Bytes(textBytes.length),
+    textBytes
+  );
+}
+
+function makeConnectionBodyBytes({
+  lineCode = 0,
+  prevLineNumber = -1,
+  prevLineHashHex = ZERO64,
+  thisLineNumber = -1,
+  toBlockchainName,
+  toBlockNumber,
+  toBlockHashHex,
+}) {
+  const cleanBch = String(toBlockchainName || '').trim();
+  if (!cleanBch) throw new Error('toBlockchainName is required for connection');
+
+  const blockNumber = Number(toBlockNumber);
+  if (!Number.isFinite(blockNumber) || blockNumber < 0) {
+    throw new Error('Invalid toBlockNumber for connection');
+  }
+
+  const bchBytes = utf8Bytes(cleanBch);
+  if (bchBytes.length < 1 || bchBytes.length > 255) {
+    throw new Error('toBlockchainName must be 1..255 bytes');
+  }
+
+  return concatBytes(
+    int32Bytes(lineCode),
+    int32Bytes(prevLineNumber),
+    hexToBytes(normalizeHex32(prevLineHashHex)),
+    int32Bytes(thisLineNumber),
+    int8Byte(bchBytes.length),
+    bchBytes,
+    int32Bytes(blockNumber),
+    hexToBytes(normalizeHex32(toBlockHashHex))
+  );
+}
+
+function makeCreateChannelBodyBytes({ lineCode, prevLineNumber, prevLineHashHex, thisLineNumber, channelName }) {
+  const check = validateChannelDisplayName(channelName);
+  if (!check.ok) throw new Error(channelNameErrorText(check.code));
+  const cleanName = check.normalized;
+
+  const nameBytes = utf8Bytes(cleanName);
+  if (nameBytes.length < 1 || nameBytes.length > 255) {
+    throw new Error('Channel name must be 1..255 bytes');
+  }
+
+  return concatBytes(
+    int32Bytes(lineCode),
+    int32Bytes(prevLineNumber),
+    hexToBytes(normalizeHex32(prevLineHashHex)),
+    int32Bytes(thisLineNumber),
+    int8Byte(nameBytes.length),
+    nameBytes
+  );
+}
+
+function makeTextPostBodyBytes({ lineCode, prevLineNumber, prevLineHashHex, thisLineNumber, text }) {
+  const message = String(text || '').trim();
+  if (!message) throw new Error('Message text is required');
+
+  const textBytes = utf8Bytes(message);
+  if (textBytes.length < 1 || textBytes.length > 65535) {
+    throw new Error('Message text must be 1..65535 UTF-8 bytes');
+  }
+
+  return concatBytes(
+    int32Bytes(lineCode),
+    int32Bytes(prevLineNumber),
+    hexToBytes(normalizeHex32(prevLineHashHex)),
+    int32Bytes(thisLineNumber),
+    int16Bytes(textBytes.length),
+    textBytes
+  );
+}
+
+function normalizeMessageRefTarget(target, actionName = 'action') {
+  const cleanBch = String(target?.blockchainName || '').trim();
+  const cleanBlockNumber = Number(target?.blockNumber);
+  const cleanBlockHash = String(target?.blockHash || '').trim().toLowerCase();
+
+  if (!cleanBch) {
+    throw new Error(`Missing message target blockchain for ${actionName}`);
+  }
+  if (!Number.isFinite(cleanBlockNumber) || cleanBlockNumber < 0) {
+    throw new Error(`Invalid message target block number for ${actionName}`);
+  }
+  if (!/^[0-9a-f]{64}$/.test(cleanBlockHash) || /^0+$/.test(cleanBlockHash)) {
+    throw new Error(`Invalid message target hash for ${actionName}`);
+  }
+
+  return {
+    blockchainName: cleanBch,
+    blockNumber: cleanBlockNumber,
+    blockHash: cleanBlockHash,
+  };
+}
+
+function buildBlockPreimage({ prevBlockHashHex, blockNumber, msgType, msgSubType, msgVersion = 1, bodyBytes }) {
+  const prevHashBytes = hexToBytes(normalizeHex32(prevBlockHashHex));
+  const body = bodyBytes || new Uint8Array(0);
+  const blockSize = 2 + 32 + 4 + 4 + 8 + 2 + 2 + 2 + body.length;
+
+  return concatBytes(
+    int16Bytes(0),
+    prevHashBytes,
+    int32Bytes(blockSize),
+    int32Bytes(blockNumber),
+    int64Bytes(Math.floor(Date.now() / 1000)),
+    int16Bytes(msgType),
+    int16Bytes(msgSubType),
+    int16Bytes(msgVersion),
+    body
+  );
+}
+
 export class AuthService {
   constructor(serverUrl) {
     this.serverUrl = normalizeServerUrl(serverUrl);
     this.ws = new WsJsonClient(this.serverUrl);
+    this.headerHashCache = new Map();
+    this.writeLocks = new Map();
   }
 
   async reconnect(serverUrl) {
@@ -119,6 +340,20 @@ export class AuthService {
     this.ws.close();
     this.serverUrl = normalized;
     this.ws = new WsJsonClient(this.serverUrl);
+    this.headerHashCache = new Map();
+    this.writeLocks.clear();
+  }
+
+  runWriteLocked(lockKey, runAction) {
+    const key = String(lockKey || '').trim() || 'write';
+    if (this.writeLocks.has(key)) return this.writeLocks.get(key);
+
+    const task = (async () => runAction())().finally(() => {
+      this.writeLocks.delete(key);
+    });
+
+    this.writeLocks.set(key, task);
+    return task;
   }
 
   async getUser(login) {
@@ -293,18 +528,440 @@ export class AuthService {
     return response.payload || {};
   }
 
-  async getChannelMessages(channel, limit = 200, sort = 'asc') {
+  async getChannelMessages(channel, limit = 200, sort = 'asc', login = '') {
-    const response = await this.ws.request('GetChannelMessages', { channel, limit, sort });
+    const payload = { channel, limit, sort };
+    const cleanLogin = String(login || '').trim();
+    if (cleanLogin) payload.login = cleanLogin;
+    const response = await this.ws.request('GetChannelMessages', payload);
     if (response.status !== 200) throw opError('GetChannelMessages', response);
     return response.payload || {};
   }
 
-  async getMessageThread(message, depthUp = 20, depthDown = 2, limitChildrenPerNode = 50) {
+  async getMessageThread(message, depthUp = 20, depthDown = 2, limitChildrenPerNode = 50, login = '') {
-    const response = await this.ws.request('GetMessageThread', { message, depthUp, depthDown, limitChildrenPerNode });
+    const payload = { message, depthUp, depthDown, limitChildrenPerNode };
+    const cleanLogin = String(login || '').trim();
+    if (cleanLogin) payload.login = cleanLogin;
+    const response = await this.ws.request('GetMessageThread', payload);
     if (response.status !== 200) throw opError('GetMessageThread', response);
     return response.payload || {};
   }
 
+  async addBlockSigned({ login, storagePwd, msgType, msgSubType, msgVersion = 1, bodyBytes }) {
+    const cleanLogin = (login || '').trim();
+    if (!cleanLogin) throw new Error('Missing login for AddBlock');
+    if (!storagePwd) throw new Error('Missing storagePwd for AddBlock signing');
+
+    const user = await this.getUser(cleanLogin);
+    const blockchainName = String(user?.blockchainName || `${cleanLogin}-${BCH_SUFFIX}`).trim();
+    const freshNum = Number(user?.serverLastGlobalNumber);
+    const freshHash = normalizeHex32(user?.serverLastGlobalHash, ZERO64);
+    const freshCursor = {
+      serverLastGlobalNumber: Number.isFinite(freshNum) ? freshNum : -1,
+      serverLastGlobalHash: freshHash,
+    };
+
+    const savedKeys = await loadEncryptedUserSecrets(cleanLogin, storagePwd);
+    const blockchainPrivatePkcs8 = savedKeys?.blockchainKey;
+    if (!blockchainPrivatePkcs8) {
+      throw new Error('Missing saved blockchain private key on device');
+    }
+
+    const privateKey = await importPkcs8Ed25519(blockchainPrivatePkcs8);
+
+    const tryAdd = async (cursor) => {
+      const blockNumber = Number(cursor?.serverLastGlobalNumber ?? -1) + 1;
+      const prevBlockHash = normalizeHex32(cursor?.serverLastGlobalHash, ZERO64);
+      const preimage = buildBlockPreimage({
+        prevBlockHashHex: prevBlockHash,
+        blockNumber,
+        msgType,
+        msgSubType,
+        msgVersion,
+        bodyBytes,
+      });
+
+      const hash32 = await sha256Bytes(preimage);
+      const signatureBytes = await signBytes(privateKey, hash32);
+      const fullBlock = concatBytes(preimage, int16Bytes(0x0100), signatureBytes);
+
+      return this.ws.request('AddBlock', {
+        blockchainName,
+        blockNumber,
+        prevBlockHash,
+        blockBytesB64: bytesToBase64(fullBlock),
+      });
+    };
+
+    let cursor = freshCursor;
+    let response = await tryAdd(cursor);
+    if (response.status !== 200) {
+      const knownNum = Number(response?.payload?.serverLastGlobalNumber);
+      const knownHash = String(response?.payload?.serverLastGlobalHash || '');
+      if (Number.isFinite(knownNum) && /^[0-9a-fA-F]{64}$/.test(knownHash)) {
+        cursor = { serverLastGlobalNumber: knownNum, serverLastGlobalHash: knownHash.toLowerCase() };
+        response = await tryAdd(cursor);
+      }
+    }
+
+    if (response.status !== 200) throw opError('AddBlock', response);
+
+    const payload = response.payload || {};
+    const acceptedNum = Number(payload?.serverLastGlobalNumber);
+    const acceptedHash = normalizeHex32(payload?.serverLastGlobalHash, ZERO64);
+    if (Number.isFinite(acceptedNum) && acceptedNum === 0 && acceptedHash !== ZERO64) {
+      this.headerHashCache.set(blockchainName, acceptedHash);
+    }
+
+    return payload;
+  }
+
+  async ensureChainInitializedForLineOps(login, storagePwd) {
+    const current = await this.getUser(login);
+    const lastNum = Number(current?.serverLastGlobalNumber);
+    if (Number.isFinite(lastNum) && lastNum >= 0) return current;
+    if (!(Number.isFinite(lastNum) && lastNum === -1)) return current;
+
+    // Bootstrap an empty chain with a minimal USER_PARAM block so line-based
+    // channel operations have a valid anchor at block #0.
+    await this.addBlockUserParam({
+      login,
+      storagePwd,
+      param: 'shine',
+      value: 'yes',
+    });
+
+    return this.getUser(login);
+  }
+
+  async addBlockLike({ login, message, storagePwd }) {
+    const cleanLogin = String(login || '').trim();
+    const target = normalizeMessageRefTarget(message, 'like');
+    const key = `like:${cleanLogin}:${target.blockchainName}:${target.blockNumber}:${target.blockHash}`;
+
+    return this.runWriteLocked(key, async () => {
+      const bodyBytes = makeReactionLikeBodyBytes({
+        toBlockchainName: target.blockchainName,
+        toBlockNumber: target.blockNumber,
+        toBlockHashHex: target.blockHash,
+      });
+
+      return this.addBlockSigned({
+        login: cleanLogin,
+        storagePwd,
+        msgType: MSG_TYPE_REACTION,
+        msgSubType: MSG_SUBTYPE_REACTION_LIKE,
+        msgVersion: 1,
+        bodyBytes,
+      });
+    });
+  }
+
+  async addBlockUnlike({ login, message, storagePwd }) {
+    const cleanLogin = String(login || '').trim();
+    const target = normalizeMessageRefTarget(message, 'unlike');
+    const key = `unlike:${cleanLogin}:${target.blockchainName}:${target.blockNumber}:${target.blockHash}`;
+
+    return this.runWriteLocked(key, async () => {
+      const bodyBytes = makeReactionLikeBodyBytes({
+        toBlockchainName: target.blockchainName,
+        toBlockNumber: target.blockNumber,
+        toBlockHashHex: target.blockHash,
+      });
+
+      return this.addBlockSigned({
+        login: cleanLogin,
+        storagePwd,
+        msgType: MSG_TYPE_REACTION,
+        msgSubType: MSG_SUBTYPE_REACTION_UNLIKE,
+        msgVersion: 1,
+        bodyBytes,
+      });
+    });
+  }
+
+  async addBlockReply({ login, message, text, storagePwd }) {
+    const cleanLogin = String(login || '').trim();
+    const cleanText = String(text || '').trim();
+    const target = normalizeMessageRefTarget(message, 'reply');
+    const key = `reply:${cleanLogin}:${target.blockchainName}:${target.blockNumber}:${target.blockHash}:${cleanText}`;
+
+    return this.runWriteLocked(key, async () => {
+      const bodyBytes = makeTextReplyBodyBytes({
+        toBlockchainName: target.blockchainName,
+        toBlockNumber: target.blockNumber,
+        toBlockHashHex: target.blockHash,
+        text: cleanText,
+      });
+
+      return this.addBlockSigned({
+        login: cleanLogin,
+        storagePwd,
+        msgType: MSG_TYPE_TEXT,
+        msgSubType: MSG_SUBTYPE_TEXT_REPLY,
+        msgVersion: 1,
+        bodyBytes,
+      });
+    });
+  }
+
+  async addBlockFollowUser({ login, targetLogin, storagePwd, unfollow = false }) {
+    const cleanTargetLogin = String(targetLogin || '').trim().replace(/^@+/, '');
+    if (!cleanTargetLogin) throw new Error('Target login is required');
+    const cleanLogin = String(login || '').trim();
+    const key = `${unfollow ? 'unfollow-user' : 'follow-user'}:${cleanLogin}:${cleanTargetLogin.toLowerCase()}`;
+
+    return this.runWriteLocked(key, async () => {
+      const targetUser = await this.getUser(cleanTargetLogin);
+      if (!targetUser?.exists) throw new Error('Target user not found');
+      const targetHeaderHash = await this.resolveHeaderHashForBlockchain(targetUser.blockchainName);
+
+      return this.addBlockFollowChannel({
+        login: cleanLogin,
+        storagePwd,
+        targetBlockchainName: targetUser.blockchainName,
+        targetBlockNumber: 0,
+        targetBlockHashHex: targetHeaderHash,
+        unfollow,
+      });
+    });
+  }
+
+  async addBlockFollowChannel({
+    login,
+    storagePwd,
+    targetBlockchainName,
+    targetBlockNumber,
+    targetBlockHashHex,
+    unfollow = false,
+  }) {
+    const cleanLogin = String(login || '').trim();
+    const cleanTargetBch = String(targetBlockchainName || '').trim();
+    const cleanTargetBlockNumber = Number(targetBlockNumber);
+    if (!cleanTargetBch) throw new Error('Target blockchain is required');
+    if (!Number.isFinite(cleanTargetBlockNumber) || cleanTargetBlockNumber < 0) {
+      throw new Error('Invalid target block number');
+    }
+    const seedHash = normalizeHex32(targetBlockHashHex, ZERO64);
+    const key = `${unfollow ? 'unfollow-channel' : 'follow-channel'}:${cleanLogin}:${cleanTargetBch}:${cleanTargetBlockNumber}:${seedHash}`;
+
+    return this.runWriteLocked(key, async () => {
+      let targetHashHex = seedHash;
+      if (targetHashHex === ZERO64) {
+        targetHashHex = cleanTargetBlockNumber === 0
+          ? await this.resolveHeaderHashForBlockchain(cleanTargetBch)
+          : await this.getBlockHashByNumber(cleanTargetBch, cleanTargetBlockNumber);
+      }
+
+      const bodyBytes = makeConnectionBodyBytes({
+        lineCode: 0,
+        prevLineNumber: -1,
+        prevLineHashHex: ZERO64,
+        thisLineNumber: -1,
+        toBlockchainName: cleanTargetBch,
+        toBlockNumber: cleanTargetBlockNumber,
+        toBlockHashHex: targetHashHex,
+      });
+
+      return this.addBlockSigned({
+        login: cleanLogin,
+        storagePwd,
+        msgType: MSG_TYPE_CONNECTION,
+        msgSubType: unfollow ? MSG_SUBTYPE_CONNECTION_UNFOLLOW : MSG_SUBTYPE_CONNECTION_FOLLOW,
+        msgVersion: 1,
+        bodyBytes,
+      });
+    });
+  }
+
+  async getBlockHashByNumber(blockchainName, blockNumber) {
+    const cleanBlockNumber = Number(blockNumber);
+    try {
+      const payload = await this.getMessageThread(
+        {
+          blockchainName: String(blockchainName || '').trim(),
+          blockNumber: cleanBlockNumber,
+          blockHash: ZERO64,
+        },
+        0,
+        0,
+        1
+      );
+      const hash = payload?.focus?.messageRef?.blockHash;
+      return normalizeHex32(hash, ZERO64);
+    } catch (error) {
+      if (cleanBlockNumber === 0 && Number(error?.status) === 404) {
+        return ZERO64;
+      }
+      throw error;
+    }
+  }
+
+  async resolveHeaderHashForBlockchain(blockchainName) {
+    const cleanBch = String(blockchainName || '').trim();
+    if (!cleanBch) throw new Error('Missing blockchainName');
+
+    if (this.headerHashCache.has(cleanBch)) {
+      const cached = normalizeHex32(this.headerHashCache.get(cleanBch), ZERO64);
+      if (cached !== ZERO64) return cached;
+      this.headerHashCache.delete(cleanBch);
+    }
+
+    const headerHash = await this.getBlockHashByNumber(cleanBch, 0);
+    if (headerHash !== ZERO64) {
+      this.headerHashCache.set(cleanBch, headerHash);
+    } else {
+      this.headerHashCache.delete(cleanBch);
+    }
+    return headerHash;
+  }
+
+  async listOwnChannelsForBlockchain(login, blockchainName) {
+    const feed = await this.listSubscriptionsFeed(login, 500);
+    const own = feed?.ownedChannels || [];
+    return own
+      .filter((item) => String(item?.channel?.ownerBlockchainName || '') === blockchainName)
+      .map((item) => ({
+        rootBlockNumber: Number(item?.channel?.channelRoot?.blockNumber),
+        rootBlockHash: normalizeHex32(item?.channel?.channelRoot?.blockHash, ZERO64),
+        channelName: String(item?.channel?.channelName || ''),
+      }))
+      .filter((item) => Number.isFinite(item.rootBlockNumber) && item.rootBlockNumber >= 0);
+  }
+
+  async addBlockCreateChannel({ login, channelName, storagePwd }) {
+    const cleanLogin = (login || '').trim();
+    if (!cleanLogin) throw new Error('Missing login');
+
+    const check = validateChannelDisplayName(channelName);
+    if (!check.ok) throw new Error(channelNameErrorText(check.code));
+    const cleanChannelName = normalizeChannelDisplayName(check.normalized);
+    const channelSlug = toCanonicalChannelSlug(cleanChannelName);
+
+    const key = `create-channel:${cleanLogin}:${channelSlug || cleanChannelName.toLowerCase()}`;
+    return this.runWriteLocked(key, async () => {
+      const user = await this.ensureChainInitializedForLineOps(cleanLogin, storagePwd);
+      const blockchainName = String(user?.blockchainName || `${cleanLogin}-${BCH_SUFFIX}`).trim();
+      const userLastGlobalNumber = Number(user?.serverLastGlobalNumber);
+      const userLastGlobalHash = normalizeHex32(user?.serverLastGlobalHash, ZERO64);
+
+      const ownChannels = await this.listOwnChannelsForBlockchain(cleanLogin, blockchainName);
+      const createdChannels = ownChannels
+        .filter((item) => item.rootBlockNumber > 0)
+        .sort((a, b) => a.rootBlockNumber - b.rootBlockNumber);
+
+      let prevLineNumber = 0;
+      let prevLineHashHex = (
+        Number.isFinite(userLastGlobalNumber) &&
+        userLastGlobalNumber === 0 &&
+        userLastGlobalHash !== ZERO64
+      )
+        ? userLastGlobalHash
+        : await this.resolveHeaderHashForBlockchain(blockchainName);
+      let thisLineNumber = 1;
+
+      if (createdChannels.length > 0) {
+        const last = createdChannels[createdChannels.length - 1];
+        prevLineNumber = last.rootBlockNumber;
+        prevLineHashHex = normalizeHex32(last.rootBlockHash, ZERO64);
+        thisLineNumber = createdChannels.length + 1;
+      }
+
+      const bodyBytes = makeCreateChannelBodyBytes({
+        lineCode: 0,
+        prevLineNumber,
+        prevLineHashHex,
+        thisLineNumber,
+        channelName: cleanChannelName,
+      });
+
+      const payload = await this.addBlockSigned({
+        login: cleanLogin,
+        storagePwd,
+        msgType: MSG_TYPE_TECH,
+        msgSubType: MSG_SUBTYPE_TECH_CREATE_CHANNEL,
+        msgVersion: 1,
+        bodyBytes,
+      });
+
+      return {
+        ...payload,
+        channel: {
+          ownerBlockchainName: blockchainName,
+          channelRootBlockNumber: Number(payload?.serverLastGlobalNumber),
+          channelRootBlockHash: normalizeHex32(payload?.serverLastGlobalHash, ZERO64),
+        },
+      };
+    });
+  }
+
+  async addBlockTextPost({ login, channel, text, storagePwd }) {
+    const cleanLogin = (login || '').trim();
+    if (!cleanLogin) throw new Error('Missing login');
+    const cleanText = String(text || '').trim();
+    const selector = channel || {};
+    const owner = String(selector?.ownerBlockchainName || '').trim();
+    const root = Number(selector?.channelRootBlockNumber);
+    const key = `text-post:${cleanLogin}:${owner}:${root}:${cleanText}`;
+
+    return this.runWriteLocked(key, async () => {
+      const user = await this.ensureChainInitializedForLineOps(cleanLogin, storagePwd);
+      const blockchainName = String(user?.blockchainName || `${cleanLogin}-${BCH_SUFFIX}`).trim();
+      const userLastGlobalNumber = Number(user?.serverLastGlobalNumber);
+      const userLastGlobalHash = normalizeHex32(user?.serverLastGlobalHash, ZERO64);
+
+      const ownerBlockchainName = owner;
+      const lineCode = root;
+      if (!ownerBlockchainName || !Number.isFinite(lineCode) || lineCode < 0) {
+        throw new Error('Invalid channel selector');
+      }
+      if (ownerBlockchainName !== blockchainName) {
+        throw new Error('Posting is allowed only to your own channels');
+      }
+
+      let rootHashHex = normalizeHex32(selector?.channelRootBlockHash, ZERO64);
+      if (lineCode === 0) {
+        rootHashHex = (
+          Number.isFinite(userLastGlobalNumber) &&
+          userLastGlobalNumber === 0 &&
+          userLastGlobalHash !== ZERO64
+        )
+          ? userLastGlobalHash
+          : await this.resolveHeaderHashForBlockchain(blockchainName);
+      } else if (rootHashHex === ZERO64) {
+        const ownChannels = await this.listOwnChannelsForBlockchain(cleanLogin, blockchainName);
+        const rootChannel = ownChannels.find((item) => item.rootBlockNumber === lineCode);
+        if (!rootChannel) throw new Error('Channel root not found');
+        rootHashHex = normalizeHex32(rootChannel.rootBlockHash, ZERO64);
+      }
+
+      const bodyBytes = makeTextPostBodyBytes({
+        lineCode,
+        prevLineNumber: lineCode,
+        prevLineHashHex: rootHashHex,
+        thisLineNumber: 0,
+        text: cleanText,
+      });
+
+      const payload = await this.addBlockSigned({
+        login: cleanLogin,
+        storagePwd,
+        msgType: MSG_TYPE_TEXT,
+        msgSubType: MSG_SUBTYPE_TEXT_POST,
+        msgVersion: 1,
+        bodyBytes,
+      });
+
+      return {
+        ...payload,
+        channel: {
+          ownerBlockchainName,
+          channelRootBlockNumber: lineCode,
+          channelRootBlockHash: rootHashHex,
+        },
+      };
+    });
+  }
+
 
   onEvent(op, handler) {
     return this.ws.onEvent(op, handler);

shine-UI/js/services/channel-name-rules.js

@@ -0,0 +1,79 @@
+const MIN_LEN = 3;
+const MAX_LEN = 32;
+const ALLOWED_CHARS_RE = /^[\p{Script=Latin}\p{Script=Cyrillic}0-9 _-]+$/u;
+
+export function normalizeChannelDisplayName(value) {
+  if (value == null) return '';
+  return String(value).trim().replace(/\s+/g, ' ');
+}
+
+export function toCanonicalChannelSlug(value) {
+  const normalized = normalizeChannelDisplayName(value);
+  if (!normalized) return '';
+
+  const lowered = normalized.toLowerCase().replace(/\u0451/g, '\u0435');
+  let out = '';
+  let pendingSeparator = false;
+
+  for (const ch of lowered) {
+    if (ch === ' ' || ch === '_' || ch === '-') {
+      pendingSeparator = out.length > 0;
+      continue;
+    }
+    if (!/[\p{Script=Latin}\p{Script=Cyrillic}0-9]/u.test(ch)) {
+      return '';
+    }
+    if (pendingSeparator && out.length > 0) out += '-';
+    out += ch;
+    pendingSeparator = false;
+  }
+
+  return out.replace(/-+$/g, '');
+}
+
+export function validateChannelDisplayName(value) {
+  const normalized = normalizeChannelDisplayName(value);
+  if (!normalized) {
+    return { ok: false, code: 'blank', normalized: '', slug: '' };
+  }
+
+  const length = Array.from(normalized).length;
+  if (length < MIN_LEN) {
+    return { ok: false, code: 'too_short', normalized, slug: '' };
+  }
+  if (length > MAX_LEN) {
+    return { ok: false, code: 'too_long', normalized, slug: '' };
+  }
+  if (!ALLOWED_CHARS_RE.test(normalized)) {
+    return { ok: false, code: 'bad_chars', normalized, slug: '' };
+  }
+  if (normalized === '0') {
+    return { ok: false, code: 'reserved', normalized, slug: '' };
+  }
+
+  const slug = toCanonicalChannelSlug(normalized);
+  if (!slug) {
+    return { ok: false, code: 'bad_chars', normalized, slug: '' };
+  }
+
+  return { ok: true, code: '', normalized, slug };
+}
+
+export function channelNameErrorText(code) {
+  switch (String(code || '').trim()) {
+    case 'blank':
+      return 'Введите название канала.';
+    case 'too_short':
+      return 'Название слишком короткое: минимум 3 символа.';
+    case 'too_long':
+      return 'Название слишком длинное: максимум 32 символа.';
+    case 'bad_chars':
+      return 'Разрешены кириллица, латиница, цифры, пробел, _ и -.';
+    case 'reserved':
+      return 'Название "0" зарезервировано.';
+    default:
+      return 'Некорректное название канала.';
+  }
+}
+
+

shine-UI/js/services/crypto-utils.js

@@ -1,4 +1,21 @@
 const encoder = new TextEncoder();
+const WEB_CRYPTO_REQUIRED_MESSAGE = 'Регистрация и подпись блоков требуют WebCrypto (crypto.subtle). Откройте приложение через HTTPS или localhost в современном браузере и повторите попытку.';
+
+function getCryptoApi() {
+  const api = globalThis.crypto;
+  if (!api || typeof api.getRandomValues !== 'function') {
+    throw new Error(WEB_CRYPTO_REQUIRED_MESSAGE);
+  }
+  return api;
+}
+
+function getSubtleApi() {
+  const api = getCryptoApi();
+  if (!api.subtle) {
+    throw new Error(WEB_CRYPTO_REQUIRED_MESSAGE);
+  }
+  return api.subtle;
+}
 
 
 function base64UrlToBase64(value) {
@@ -8,7 +25,7 @@ function base64UrlToBase64(value) {
 }
 
 export function randomBase64(byteLen = 32) {
-  const bytes = crypto.getRandomValues(new Uint8Array(byteLen));
+  const bytes = getCryptoApi().getRandomValues(new Uint8Array(byteLen));
   return bytesToBase64(bytes);
 }
 
@@ -35,7 +52,7 @@ export function utf8Bytes(value) {
 }
 
 export async function sha256Bytes(bytes) {
-  const digest = await crypto.subtle.digest('SHA-256', bytes);
+  const digest = await getSubtleApi().digest('SHA-256', bytes);
   return new Uint8Array(digest);
 }
 
@@ -65,8 +82,9 @@ function ed25519Pkcs8FromSeed(seed32) {
 export async function deriveEd25519FromPassword(password, suffix) {
   const seed = await derivePasswordSeed(password, suffix);
   const pkcs8 = ed25519Pkcs8FromSeed(seed);
-  const privateKey = await crypto.subtle.importKey('pkcs8', pkcs8, { name: 'Ed25519' }, true, ['sign']);
+  const subtle = getSubtleApi();
-  const jwk = await crypto.subtle.exportKey('jwk', privateKey);
+  const privateKey = await subtle.importKey('pkcs8', pkcs8, { name: 'Ed25519' }, true, ['sign']);
+  const jwk = await subtle.exportKey('jwk', privateKey);
   if (!jwk.x) throw new Error('Не удалось получить публичный ключ Ed25519');
 
   return {
@@ -77,7 +95,8 @@ export async function deriveEd25519FromPassword(password, suffix) {
 }
 
 export async function deriveAesKeyFromStoragePwd(storagePwd, saltBytes) {
-  const baseKey = await crypto.subtle.importKey(
+  const subtle = getSubtleApi();
+  const baseKey = await subtle.importKey(
     'raw',
     utf8Bytes(storagePwd),
     { name: 'PBKDF2' },
@@ -85,7 +104,7 @@ export async function deriveAesKeyFromStoragePwd(storagePwd, saltBytes) {
     ['deriveKey'],
   );
 
-  return crypto.subtle.deriveKey(
+  return subtle.deriveKey(
     {
       name: 'PBKDF2',
       salt: saltBytes,
@@ -103,11 +122,13 @@ export async function deriveAesKeyFromStoragePwd(storagePwd, saltBytes) {
 }
 
 export async function encryptJsonWithStoragePwd(value, storagePwd) {
-  const salt = crypto.getRandomValues(new Uint8Array(16));
+  const cryptoApi = getCryptoApi();
-  const iv = crypto.getRandomValues(new Uint8Array(12));
+  const subtle = getSubtleApi();
+  const salt = cryptoApi.getRandomValues(new Uint8Array(16));
+  const iv = cryptoApi.getRandomValues(new Uint8Array(12));
   const key = await deriveAesKeyFromStoragePwd(storagePwd, salt);
   const plainBytes = utf8Bytes(JSON.stringify(value));
-  const cipher = await crypto.subtle.encrypt({ name: 'AES-GCM', iv }, key, plainBytes);
+  const cipher = await subtle.encrypt({ name: 'AES-GCM', iv }, key, plainBytes);
 
   return {
     saltB64: bytesToBase64(salt),
@@ -121,35 +142,35 @@ export async function decryptJsonWithStoragePwd(envelope, storagePwd) {
   const iv = base64ToBytes(envelope.ivB64);
   const cipher = base64ToBytes(envelope.cipherB64);
   const key = await deriveAesKeyFromStoragePwd(storagePwd, salt);
-  const plain = await crypto.subtle.decrypt({ name: 'AES-GCM', iv }, key, cipher);
+  const plain = await getSubtleApi().decrypt({ name: 'AES-GCM', iv }, key, cipher);
   const text = new TextDecoder().decode(plain);
   return JSON.parse(text);
 }
 
 export async function generateEd25519Pair() {
-  return crypto.subtle.generateKey({ name: 'Ed25519' }, true, ['sign', 'verify']);
+  return getSubtleApi().generateKey({ name: 'Ed25519' }, true, ['sign', 'verify']);
 }
 
 export async function exportEd25519PublicKeyB64(publicKey) {
-  const raw = await crypto.subtle.exportKey('raw', publicKey);
+  const raw = await getSubtleApi().exportKey('raw', publicKey);
   return bytesToBase64(new Uint8Array(raw));
 }
 
 export async function exportPkcs8B64(privateKey) {
-  const raw = await crypto.subtle.exportKey('pkcs8', privateKey);
+  const raw = await getSubtleApi().exportKey('pkcs8', privateKey);
   return bytesToBase64(new Uint8Array(raw));
 }
 
 export async function importPkcs8Ed25519(pkcs8B64) {
-  return crypto.subtle.importKey('pkcs8', base64ToBytes(pkcs8B64), { name: 'Ed25519' }, false, ['sign']);
+  return getSubtleApi().importKey('pkcs8', base64ToBytes(pkcs8B64), { name: 'Ed25519' }, false, ['sign']);
 }
 
 export async function signBase64(privateKey, text) {
-  const signature = await crypto.subtle.sign({ name: 'Ed25519' }, privateKey, utf8Bytes(text));
+  const signature = await getSubtleApi().sign({ name: 'Ed25519' }, privateKey, utf8Bytes(text));
   return bytesToBase64(new Uint8Array(signature));
 }
 
 export async function signBytes(privateKey, bytes) {
-  const signature = await crypto.subtle.sign({ name: 'Ed25519' }, privateKey, bytes);
+  const signature = await getSubtleApi().sign({ name: 'Ed25519' }, privateKey, bytes);
   return new Uint8Array(signature);
 }

shine-UI/js/services/ui-error-texts.js

@@ -0,0 +1,112 @@
+function extractCode(message = '') {
+  const match = String(message || '').match(/\(([A-Z0-9_]+)\)\s*$/i);
+  return match ? String(match[1]).toUpperCase() : '';
+}
+
+function normalizeText(error) {
+  return String(error?.message || '').trim().toLowerCase();
+}
+
+export function toUserMessage(error, fallback = 'Действие не выполнено. Попробуйте еще раз.') {
+  const raw = String(error?.message || '').trim();
+  const text = normalizeText(error);
+  const code = String(error?.code || extractCode(raw) || '').toUpperCase();
+
+  if (
+    text.includes('webcrypto') ||
+    text.includes('crypto.subtle') ||
+    text.includes("reading 'digest'") ||
+    text.includes('not supported on insecure origins')
+  ) {
+    return 'Криптография браузера недоступна. Откройте приложение через HTTPS или localhost.';
+  }
+
+  if (
+    text.includes('mixed content') ||
+    text.includes('insecure websocket connection') ||
+    (text.includes('https') && text.includes('ws://'))
+  ) {
+    return 'Подключение заблокировано: страница открыта по HTTPS, а сервер указан как ws://. Используйте wss://.';
+  }
+
+  if (
+    text.includes('не удалось подключиться') ||
+    text.includes('failed to connect websocket') ||
+    text.includes('websocket закрыто') ||
+    text.includes('соединение websocket закрыто')
+  ) {
+    return 'Сервер недоступен. Проверьте, что backend запущен, и повторите попытку.';
+  }
+
+  if (text.includes('таймаут') || text.includes('timeout waiting')) {
+    return 'Сервер отвечает слишком долго. Повторите попытку через несколько секунд.';
+  }
+
+  if (
+    code === 'USER_NOT_FOUND' ||
+    text.includes('user not found') ||
+    text.includes('пользователь не найден')
+  ) {
+    return 'Пользователь не найден. Проверьте логин.';
+  }
+
+  if (
+    code === 'BAD_CHANNEL_NAME' ||
+    text.includes('channel name must match') ||
+    text.includes('channelname contains unsupported') ||
+    text.includes('channelname length must be 3..32') ||
+    text.includes('bad_channel_name')
+  ) {
+    return 'Некорректное название канала. Разрешены кириллица, латиница, цифры, пробел, _ и - (3..32 символа).';
+  }
+
+  if (text.includes('channel name is required') || text.includes('введите имя канала')) {
+    return 'Введите имя канала.';
+  }
+
+  if (code === 'CHANNEL_NAME_ALREADY_EXISTS' || text.includes('channel_name_already_exists')) {
+    return 'Такое название уже занято. Попробуйте немного изменить его.';
+  }
+
+  if (
+    code === 'PREV_LINE_BLOCK_NOT_FOUND' ||
+    code === 'LINE_ERR_NO_PREV' ||
+    text.includes('prev_line_block_not_found') ||
+    text.includes('line_err_no_prev')
+  ) {
+    return 'Базовый блок линии не найден. Обновите страницу и повторите действие.';
+  }
+
+  if (
+    code === 'BAD_PREV_LINE_HASH' ||
+    code === 'LINE_ERR_PREV_HASH_MISMATCH' ||
+    text.includes('bad_prev_line_hash') ||
+    text.includes('line_err_prev_hash_mismatch') ||
+    text.includes('prevlinehash')
+  ) {
+    return 'Конфликт состояния канала. Обновите страницу и повторите действие.';
+  }
+
+  if (code === 'LINE_ERR_PARTIAL_FIELDS' || text.includes('line_err_partial_fields')) {
+    return 'Некорректные данные канала. Обновите страницу и повторите действие.';
+  }
+
+  if (code === 'NOT_AUTHENTICATED' || text.includes('session is not ready for signing')) {
+    return 'Сессия недействительна. Выполните вход заново.';
+  }
+
+  if (
+    code === 'SESSION_NOT_FOUND' ||
+    code === 'SESSION_KEY_NOT_ACTUAL' ||
+    code === 'SESSION_OF_ANOTHER_USER'
+  ) {
+    return 'Сессия устарела. Войдите заново и повторите действие.';
+  }
+
+  if (code === 'UNSUPPORTED_KEY_ALGORITHM' || text.includes('unsupported key algorithm')) {
+    return 'Ключ устройства не поддерживается сервером. Очистите локальные ключи и войдите заново.';
+  }
+
+  if (!raw) return fallback;
+  return raw;
+}

shine-UI/js/services/ws-client.js

@@ -5,11 +5,51 @@ const DEFAULT_TIMEOUT_MS = 12000;
 function buildWsUrl(raw) {
   const value = (raw || '').trim();
   if (!value) return 'wss://shineup.me/ws';
-  if (value.startsWith('ws://') || value.startsWith('wss://')) return value;
+  if (value.startsWith('/')) {
-  if (value.startsWith('http://')) return `ws://${value.slice('http://'.length)}`;
+    const secure = window.location.protocol === 'https:';
-  if (value.startsWith('https://')) return `wss://${value.slice('https://'.length)}`;
+    const scheme = secure ? 'wss' : 'ws';
+    return `${scheme}://${window.location.host}${value}`;
+  }
+  if (value.startsWith('ws://') || value.startsWith('wss://')) {
+    try {
+      const parsed = new URL(value);
+      if (!parsed.pathname || parsed.pathname === '/') parsed.pathname = '/ws';
+      return parsed.toString();
+    } catch {
       return value;
     }
+  }
+  if (value.startsWith('http://') || value.startsWith('https://')) {
+    try {
+      const parsed = new URL(value);
+      parsed.protocol = parsed.protocol === 'https:' ? 'wss:' : 'ws:';
+      if (!parsed.pathname || parsed.pathname === '/') parsed.pathname = '/ws';
+      return parsed.toString();
+    } catch {
+      return value.startsWith('https://')
+        ? `wss://${value.slice('https://'.length)}`
+        : `ws://${value.slice('http://'.length)}`;
+    }
+  }
+  return value;
+}
+
+function isLoopbackHost(hostname = '') {
+  const host = String(hostname || '').toLowerCase();
+  return host === 'localhost' || host === '127.0.0.1' || host === '[::1]';
+}
+
+function isMixedContentWs(url) {
+  try {
+    const pageIsHttps = window.location.protocol === 'https:';
+    if (!pageIsHttps) return false;
+    const parsed = new URL(url);
+    if (parsed.protocol !== 'ws:') return false;
+    return !isLoopbackHost(parsed.hostname);
+  } catch {
+    return false;
+  }
+}
 
 function createRequestId(op) {
   return `${op}-${Date.now()}-${Math.random().toString(16).slice(2)}`;
@@ -27,6 +67,15 @@ export class WsJsonClient {
   async open() {
     if (this.ws && this.ws.readyState === WebSocket.OPEN) return;
     if (this.openPromise) return this.openPromise;
+    if (isMixedContentWs(this.url)) {
+      const error = new Error('Страница открыта по HTTPS, а сервер указан как ws://. Используйте wss:// адрес для Shine сервера.');
+      captureClientError({
+        kind: 'ws_mixed_content_blocked',
+        message: error.message,
+        context: { url: this.url, pageProtocol: window.location.protocol },
+      });
+      throw error;
+    }
 
     this.openPromise = new Promise((resolve, reject) => {
       const ws = new WebSocket(this.url);
@@ -54,7 +103,6 @@ export class WsJsonClient {
       });
     }).finally(() => {
       this.openPromise = null;
-    this.eventListeners = new Map();
     });
 
     return this.openPromise;

shine-UI/js/state.js

@@ -4,6 +4,7 @@ import { clearClientAuthData } from './services/key-vault.js';
 
 const clone = (value) => JSON.parse(JSON.stringify(value));
 const SESSION_STORAGE_KEY = 'shine-ui-current-session-v1';
+const REACTIONS_STORAGE_KEY = 'shine-ui-message-reactions-v2';
 const INVALID_SESSION_CODES = new Set([
   'NOT_AUTHENTICATED',
   'SESSION_NOT_FOUND',
@@ -13,18 +14,63 @@ const INVALID_SESSION_CODES = new Set([
 
 function readLocalWsOverrideUrl() {
   try {
-    const value = new URLSearchParams(window.location.search).get('localWsPort');
+    const params = new URLSearchParams(window.location.search);
+
+    const explicitWsUrl = String(params.get('wsUrl') || '').trim();
+    if (explicitWsUrl) {
+      if (explicitWsUrl.startsWith('ws://') || explicitWsUrl.startsWith('wss://')) {
+        try {
+          const parsed = new URL(explicitWsUrl);
+          if (!parsed.pathname || parsed.pathname === '/') parsed.pathname = '/ws';
+          return parsed.toString();
+        } catch {
+          return explicitWsUrl;
+        }
+      }
+      if (explicitWsUrl.startsWith('http://') || explicitWsUrl.startsWith('https://')) {
+        try {
+          const parsed = new URL(explicitWsUrl);
+          parsed.protocol = parsed.protocol === 'https:' ? 'wss:' : 'ws:';
+          if (!parsed.pathname || parsed.pathname === '/') parsed.pathname = '/ws';
+          return parsed.toString();
+        } catch {
+          return `${explicitWsUrl.replace(/^http/, 'ws').replace(/\/$/, '')}/ws`;
+        }
+      }
+      return '';
+    }
+
+    const value = params.get('localWsPort');
     const asNum = Number(value);
     if (!Number.isFinite(asNum)) return '';
     const port = Math.trunc(asNum);
     if (port <= 0 || port > 65535) return '';
-    return `ws://localhost:${port}/ws`;
+    const isHttpsPage = window.location.protocol === 'https:';
+    const forceInsecureLocal = params.get('allowInsecureLocalWs') === '1';
+    const scheme = (isHttpsPage && !forceInsecureLocal) ? 'wss' : 'ws';
+    return `${scheme}://localhost:${port}/ws`;
   } catch {
     return '';
   }
 }
 
-const LOCAL_WS_OVERRIDE_URL = readLocalWsOverrideUrl();
+function inferTunnelWsUrl() {
+  try {
+    const host = String(window.location.host || '').toLowerCase();
+    const isTunnelHost = (
+      host.endsWith('.ngrok-free.dev') ||
+      host.endsWith('.ngrok.io') ||
+      host.endsWith('.trycloudflare.com')
+    );
+    if (!isTunnelHost) return '';
+    const scheme = window.location.protocol === 'https:' ? 'wss' : 'ws';
+    return `${scheme}://${window.location.host}/ws`;
+  } catch {
+    return '';
+  }
+}
+
+const LOCAL_WS_OVERRIDE_URL = readLocalWsOverrideUrl() || inferTunnelWsUrl();
 const DEFAULT_SHINE_SERVER = 'wss://shineup.me/ws';
 
 function loadStoredSession() {
@@ -37,6 +83,26 @@ function loadStoredSession() {
   }
 }
 
+function loadStoredReactions() {
+  try {
+    const raw = localStorage.getItem(REACTIONS_STORAGE_KEY);
+    if (!raw) return {};
+    const parsed = JSON.parse(raw);
+    if (!parsed || typeof parsed !== 'object' || Array.isArray(parsed)) return {};
+    return parsed;
+  } catch {
+    return {};
+  }
+}
+
+function persistStoredReactions(reactions) {
+  try {
+    localStorage.setItem(REACTIONS_STORAGE_KEY, JSON.stringify(reactions || {}));
+  } catch {
+    // ignore storage errors
+  }
+}
+
 function persistSession(session) {
   try {
     localStorage.setItem(SESSION_STORAGE_KEY, JSON.stringify(session));
@@ -55,6 +121,7 @@ function clearStoredSession() {
 
 function createInitialState({ withStoredSession = true } = {}) {
   const storedSession = withStoredSession ? loadStoredSession() : null;
+  const storedReactions = loadStoredReactions();
   const initialShineServer = LOCAL_WS_OVERRIDE_URL || DEFAULT_SHINE_SERVER;
 
   return {
@@ -120,6 +187,7 @@ function createInitialState({ withStoredSession = true } = {}) {
     channelsFeed: null,
     channelsIndex: {},
     localChannelPosts: {},
+    messageReactions: storedReactions,
   };
 }
 
@@ -247,6 +315,10 @@ function resetStateForSignedOut() {
   state.deviceConnect = next.deviceConnect;
   state.authUi = next.authUi;
   state.sessions = next.sessions;
+  state.channelsFeed = next.channelsFeed;
+  state.channelsIndex = next.channelsIndex;
+  state.localChannelPosts = next.localChannelPosts;
+  state.messageReactions = next.messageReactions;
 }
 
 export async function terminateCurrentSession({ infoMessage = '' } = {}) {
@@ -295,3 +367,31 @@ export function addLocalChannelPost(channelId, post) {
     body: text,
   });
 }
+
+function makeMessageReactionKey(messageRef, login = state.session.login) {
+  const bch = String(messageRef?.blockchainName || '').trim();
+  const blockNumber = Number(messageRef?.blockNumber);
+  const blockHash = String(messageRef?.blockHash || '').trim().toLowerCase();
+  const cleanLogin = String(login || '').trim().toLowerCase();
+  if (!cleanLogin || !bch || !Number.isFinite(blockNumber) || blockNumber < 0 || !blockHash) return '';
+  return `${cleanLogin}|${bch}|${blockNumber}|${blockHash}`;
+}
+
+export function getMessageReactionState(messageRef) {
+  const key = makeMessageReactionKey(messageRef);
+  if (!key) return '';
+  return state.messageReactions[key] || '';
+}
+
+export function setMessageReactionState(messageRef, nextState) {
+  const key = makeMessageReactionKey(messageRef);
+  if (!key) return;
+  const normalized = String(nextState || '').trim().toLowerCase();
+  if (normalized === 'liked' || normalized === 'unliked') {
+    state.messageReactions[key] = normalized;
+    persistStoredReactions(state.messageReactions);
+    return;
+  }
+  delete state.messageReactions[key];
+  persistStoredReactions(state.messageReactions);
+}

shine-UI/styles/components.css

@@ -31,11 +31,16 @@
 .icon-btn,
 .text-btn,
 .primary-btn,
+.secondary-btn,
+.destructive-btn,
 .ghost-btn {
-  border: 1px solid var(--line);
+  border: 1px solid rgba(255, 255, 255, 0.14);
   border-radius: var(--radius-sm);
-  background: var(--card-soft);
+  background: rgba(255, 255, 255, 0.03);
-  padding: 8px 10px;
+  color: var(--text);
+  padding: 9px 12px;
+  min-height: 38px;
+  font-weight: 600;
   cursor: pointer;
   transition: 0.2s ease;
 }
@@ -43,16 +48,49 @@
 .icon-btn:hover,
 .text-btn:hover,
 .primary-btn:hover,
+.secondary-btn:hover,
+.destructive-btn:hover,
 .ghost-btn:hover {
   border-color: var(--accent);
+  transform: translateY(-1px);
 }
 
 .primary-btn {
-  background: linear-gradient(120deg, var(--accent-soft), rgba(82, 120, 240, 0.22));
+  background: linear-gradient(120deg, rgba(218, 179, 87, 0.95), rgba(184, 137, 54, 0.92));
+  border-color: rgba(242, 210, 129, 0.72);
+  color: #101426;
+}
+
+.secondary-btn {
+  background: linear-gradient(180deg, rgba(19, 35, 63, 0.9), rgba(14, 26, 50, 0.95));
+  border-color: rgba(132, 162, 228, 0.42);
+  color: #e7efff;
+}
+
+.destructive-btn {
+  background: linear-gradient(120deg, rgba(129, 37, 54, 0.9), rgba(92, 23, 37, 0.94));
+  border-color: rgba(255, 129, 147, 0.46);
+  color: #ffe4ea;
 }
 
 .ghost-btn {
-  background: rgba(255, 255, 255, 0.03);
+  background: rgba(17, 26, 46, 0.62);
+  border-color: rgba(255, 255, 255, 0.16);
+}
+
+.icon-btn:disabled,
+.text-btn:disabled,
+.primary-btn:disabled,
+.secondary-btn:disabled,
+.destructive-btn:disabled,
+.ghost-btn:disabled {
+  opacity: 1;
+  color: #93a6cc;
+  background: linear-gradient(180deg, rgba(18, 30, 54, 0.8), rgba(11, 20, 39, 0.86));
+  border-color: rgba(124, 145, 189, 0.28);
+  box-shadow: none;
+  cursor: not-allowed;
+  transform: none;
 }
 
 .card {
@@ -580,6 +618,11 @@
   padding: 0 12px;
   width: 100%;
   outline: none;
+  color: #f3f7ff;
+  font-size: 16px;
+  line-height: 1.4;
+  caret-color: #f1d18a;
+  -webkit-text-fill-color: #f3f7ff;
 }
 
 .input:focus {
@@ -587,6 +630,45 @@
   box-shadow: 0 0 0 3px rgba(83, 216, 251, 0.12);
 }
 
+.input::placeholder {
+  color: rgba(190, 206, 238, 0.82);
+}
+
+input.input:-webkit-autofill,
+input.input:-webkit-autofill:hover,
+input.input:-webkit-autofill:focus,
+textarea.input:-webkit-autofill,
+textarea.input:-webkit-autofill:hover,
+textarea.input:-webkit-autofill:focus {
+  -webkit-text-fill-color: #f3f7ff !important;
+  caret-color: #f1d18a;
+  border-color: var(--line);
+  box-shadow: 0 0 0 1000px rgba(11, 24, 46, 0.96) inset !important;
+  transition: background-color 9999s ease-out 0s;
+}
+
+textarea.input {
+  padding: 10px 12px;
+  min-height: 92px;
+  resize: vertical;
+}
+
+.modal-title {
+  font-size: 19px;
+  line-height: 1.2;
+  color: #f1d69a;
+}
+
+.inline-error {
+  min-height: 18px;
+}
+
+.form-actions-grid {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 10px;
+}
+
 .small-btn {
   padding: 6px 10px;
   font-size: 13px;
@@ -787,6 +869,10 @@
   padding: 14px;
 }
 
+.channels-screen .modal-card .input {
+  background: linear-gradient(180deg, rgba(16, 31, 58, 0.9), rgba(11, 22, 43, 0.94));
+}
+
 .section-title {
   font-size: 14px;
   font-weight: 700;
@@ -821,3 +907,615 @@
   background: linear-gradient(180deg, rgba(83, 216, 251, 0.55), rgba(83, 216, 251, 0.15));
   pointer-events: none;
 }
+
+.toolbar {
+  background:
+    radial-gradient(circle at 18% -120%, rgba(228, 186, 94, 0.28), transparent 48%),
+    linear-gradient(160deg, rgba(14, 25, 47, 0.98), rgba(7, 16, 34, 0.98));
+  border: 1px solid rgba(197, 160, 85, 0.38);
+  box-shadow: 0 18px 32px rgba(2, 6, 13, 0.62);
+  border-radius: 18px;
+  padding: 9px;
+}
+
+.toolbar-btn {
+  color: #b8c7ea;
+  border-radius: 12px;
+  min-height: 52px;
+  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
+}
+
+.toolbar-btn.active {
+  background:
+    linear-gradient(145deg, rgba(220, 181, 94, 0.32), rgba(39, 66, 122, 0.3)),
+    rgba(20, 35, 64, 0.62);
+  border: 1px solid rgba(220, 183, 100, 0.44);
+  color: #f7e2ad;
+  box-shadow: inset 0 1px 0 rgba(255, 242, 204, 0.42);
+}
+
+.toolbar-btn:active {
+  transform: translateY(1px);
+}
+
+.modal-card {
+  background: linear-gradient(165deg, rgba(16, 31, 58, 0.97), rgba(10, 18, 36, 0.97));
+  border-color: rgba(216, 179, 93, 0.4);
+  box-shadow: 0 20px 38px rgba(2, 6, 12, 0.55);
+}
+
+.channels-screen {
+  position: relative;
+  gap: 11px;
+  isolation: isolate;
+}
+
+.channels-screen::before {
+  content: "";
+  position: absolute;
+  inset: -24px -18px 0;
+  z-index: -1;
+  pointer-events: none;
+  background:
+    radial-gradient(circle at 16% -4%, rgba(232, 191, 92, 0.22), transparent 40%),
+    radial-gradient(circle at 80% 6%, rgba(77, 114, 189, 0.35), transparent 39%),
+    radial-gradient(circle at 52% 22%, rgba(13, 33, 70, 0.54), transparent 44%),
+    linear-gradient(180deg, rgba(4, 11, 24, 0.92), rgba(4, 11, 23, 0.4) 46%, transparent 100%);
+}
+
+.channels-screen .page-header {
+  margin-bottom: 0;
+  align-items: flex-end;
+}
+
+.channels-screen .page-header .icon-btn,
+.channels-screen .page-header .text-btn {
+  background: linear-gradient(180deg, rgba(20, 37, 67, 0.9), rgba(13, 24, 47, 0.94));
+  border-color: rgba(146, 173, 229, 0.38);
+  color: #d9e6ff;
+}
+
+.channels-screen .page-title {
+  font-size: 29px;
+  line-height: 1.05;
+  font-family: "Cormorant Garamond", "Times New Roman", serif;
+  letter-spacing: 0.01em;
+  color: #f5db9e;
+  text-shadow: 0 10px 20px rgba(0, 0, 0, 0.48);
+}
+
+.channels-screen--list .page-title {
+  font-size: 37px;
+  line-height: 0.95;
+}
+
+.channels-screen .card {
+  background:
+    linear-gradient(168deg, rgba(16, 31, 58, 0.95), rgba(8, 17, 34, 0.98)),
+    radial-gradient(circle at 50% 0%, rgba(53, 90, 165, 0.2), transparent 52%);
+  border: 1px solid rgba(176, 144, 74, 0.3);
+  box-shadow: 0 14px 30px rgba(2, 7, 15, 0.54);
+}
+
+.channels-screen .meta-muted {
+  color: #c3cfea;
+}
+
+.channels-screen .status-line.is-unavailable {
+  color: #ffd9e1;
+}
+
+.channels-hero {
+  display: grid;
+  grid-template-columns: auto 1fr;
+  gap: 12px;
+  align-items: center;
+  padding: 12px;
+  border-color: rgba(214, 177, 95, 0.42);
+  box-shadow: 0 14px 30px rgba(4, 9, 20, 0.54);
+}
+
+.channels-hero-emblem {
+  position: relative;
+  width: 62px;
+  height: 62px;
+  border-radius: 50%;
+  border: 1px solid rgba(220, 182, 98, 0.64);
+  background:
+    radial-gradient(circle at 45% 40%, rgba(247, 217, 145, 0.9), rgba(199, 146, 61, 0.95) 46%, rgba(127, 88, 36, 0.96) 100%);
+  box-shadow:
+    inset 0 0 0 5px rgba(20, 38, 74, 0.76),
+    0 10px 20px rgba(3, 7, 16, 0.52);
+}
+
+.channels-hero-emblem::before,
+.channels-hero-emblem::after {
+  content: "";
+  position: absolute;
+  inset: 14px;
+  border-radius: 50%;
+  border: 2px solid rgba(27, 47, 85, 0.74);
+}
+
+.channels-hero-emblem::after {
+  inset: 7px;
+  border-width: 1px;
+  border-color: rgba(228, 192, 109, 0.66);
+}
+
+.channels-hero-copy {
+  min-width: 0;
+  display: grid;
+  gap: 2px;
+}
+
+.channels-hero-kicker {
+  font-size: 11px;
+  letter-spacing: 0.16em;
+  text-transform: uppercase;
+  color: #e8cc8f;
+}
+
+.channels-hero-title {
+  font-family: "Cormorant Garamond", "Times New Roman", serif;
+  font-size: 26px;
+  line-height: 1;
+  color: #f4ddab;
+}
+
+.channels-hero-subtitle {
+  color: #afc1e3;
+  font-size: 12px;
+  line-height: 1.35;
+}
+
+.channels-user-chip {
+  display: flex;
+  align-items: center;
+  gap: 9px;
+  color: #e9f0ff;
+  min-height: 46px;
+  font-size: 15px;
+}
+
+.channels-user-chip::before {
+  content: "";
+  width: 9px;
+  height: 9px;
+  border-radius: 50%;
+  background: #ddb86f;
+  box-shadow: 0 0 0 6px rgba(221, 184, 111, 0.2);
+}
+
+.channels-help-card strong {
+  font-size: 17px;
+  color: #f3d79c;
+  font-family: "Cormorant Garamond", "Times New Roman", serif;
+}
+
+.channels-help-card .meta-muted {
+  line-height: 1.34;
+  font-size: 13px;
+}
+
+.channels-help-card {
+  gap: 6px;
+  padding-top: 12px;
+  padding-bottom: 12px;
+}
+
+.channels-info-strip {
+  border-radius: 14px;
+  padding: 10px 13px;
+  color: #ead3a0;
+  border: 1px solid rgba(214, 175, 89, 0.4);
+  background: linear-gradient(134deg, rgba(180, 140, 62, 0.22), rgba(23, 44, 84, 0.3));
+  font-size: 12px;
+  line-height: 1.35;
+}
+
+.channels-action-grid {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 9px;
+}
+
+.channels-action-btn {
+  min-height: 50px;
+  border-radius: 999px;
+  text-align: center;
+  line-height: 1.25;
+  padding: 9px 10px;
+  font-weight: 700;
+  letter-spacing: 0.01em;
+  font-size: 13px;
+}
+
+.channels-action-btn.primary-btn {
+  box-shadow: inset 0 1px 0 rgba(255, 247, 214, 0.6), 0 10px 18px rgba(5, 8, 16, 0.46);
+}
+
+.channels-action-btn.destructive-btn {
+  border-color: rgba(248, 141, 163, 0.5);
+  background: linear-gradient(120deg, rgba(126, 31, 52, 0.94), rgba(88, 22, 37, 0.95));
+  box-shadow: inset 0 1px 0 rgba(171, 198, 255, 0.26), 0 9px 16px rgba(5, 8, 16, 0.36);
+}
+
+.channels-scroll-wrap {
+  max-height: none;
+  padding-right: 8px;
+}
+
+.channels-groups {
+  gap: 11px;
+}
+
+.channels-section {
+  gap: 8px;
+}
+
+.channels-section .section-title {
+  font-size: 21px;
+  color: #f2d395;
+  margin: 0 2px;
+  font-family: "Cormorant Garamond", "Times New Roman", serif;
+  letter-spacing: 0.01em;
+}
+
+.channels-list-empty {
+  border: 1px dashed rgba(209, 172, 87, 0.35);
+  border-radius: var(--radius-md);
+  padding: 12px;
+  color: #aeb9d8;
+  background: rgba(10, 18, 36, 0.5);
+}
+
+.channels-divider {
+  border-top-color: rgba(211, 170, 86, 0.22);
+  margin: 2px 0;
+}
+
+.channel-row {
+  display: grid;
+  grid-template-columns: 46px minmax(0, 1fr) 72px;
+  gap: 12px;
+  padding: 14px 13px;
+  border-radius: 16px;
+  border: 1px solid rgba(193, 157, 82, 0.28);
+  background:
+    linear-gradient(150deg, rgba(16, 31, 58, 0.9), rgba(10, 20, 40, 0.94)),
+    radial-gradient(circle at 100% 0%, rgba(72, 106, 179, 0.22), transparent 46%);
+  cursor: pointer;
+  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
+}
+
+.channel-row:hover {
+  border-color: rgba(224, 188, 106, 0.52);
+  box-shadow: 0 10px 22px rgba(2, 8, 16, 0.44);
+  transform: translateY(-1px);
+}
+
+.channel-row .avatar {
+  width: 42px;
+  height: 42px;
+  min-width: 42px;
+  min-height: 42px;
+  background: linear-gradient(138deg, #efd193, #c18c42);
+  color: #17233f;
+  box-shadow: inset 0 1px 0 rgba(255, 244, 208, 0.58);
+}
+
+.channel-row-main {
+  min-width: 0;
+  display: grid;
+  gap: 4px;
+}
+
+.channel-row-title {
+  font-size: 18px;
+  color: #f5daa0;
+  line-height: 1.2;
+  letter-spacing: 0.01em;
+}
+
+.channel-row-description {
+  font-size: 11px;
+  color: #9db0dc;
+  word-break: break-word;
+  opacity: 0.95;
+}
+
+.channel-row-message {
+  color: #e5eeff;
+  font-size: 14px;
+  line-height: 1.35;
+  word-break: break-word;
+  min-height: 18px;
+}
+
+.channel-row-owner {
+  font-size: 12px;
+  color: #bdcdeb;
+}
+
+.channel-row-meta {
+  display: grid;
+  justify-items: center;
+  align-content: start;
+  gap: 6px;
+}
+
+.channel-row-kind {
+  font-size: 10px;
+  text-transform: uppercase;
+  letter-spacing: 0.08em;
+  padding: 4px 8px;
+  border-radius: 999px;
+  border: 1px solid rgba(205, 166, 86, 0.42);
+  color: #f1d49a;
+  background: rgba(191, 149, 66, 0.16);
+}
+
+.channel-row-time {
+  font-size: 11px;
+  color: #96a7ce;
+}
+
+.channel-row-count {
+  min-width: 28px;
+  justify-content: center;
+  background: linear-gradient(140deg, rgba(223, 186, 98, 0.95), rgba(199, 155, 75, 0.95));
+  color: #17203a;
+}
+
+.channels-bottom-action {
+  margin-top: 6px;
+  min-height: 48px;
+  border-radius: 13px;
+  font-size: 14px;
+}
+
+.channels-status {
+  border-color: rgba(227, 127, 144, 0.45);
+  background: linear-gradient(165deg, rgba(68, 24, 36, 0.55), rgba(19, 17, 33, 0.82));
+}
+
+.channel-head-card {
+  display: grid;
+  gap: 6px;
+}
+
+.channel-head-title {
+  font-size: 24px;
+  color: #f0d089;
+  line-height: 1.1;
+  font-family: "Cormorant Garamond", "Times New Roman", serif;
+}
+
+.channel-head-meta {
+  font-size: 13px;
+  color: #aebddd;
+}
+
+.channel-note {
+  font-size: 13px;
+  color: #e8d8b0;
+  line-height: 1.4;
+}
+
+.channel-feed {
+  gap: 10px;
+}
+
+.channel-message-card {
+  gap: 9px;
+  padding: 13px;
+  border-radius: 16px;
+  border-color: rgba(182, 149, 78, 0.3);
+}
+
+.channel-message-title {
+  font-size: 15px;
+  color: #f2dcab;
+}
+
+.channel-message-body {
+  color: #eef3ff;
+  line-height: 1.45;
+  font-size: 14px;
+  white-space: pre-wrap;
+  word-break: break-word;
+  border-radius: 10px;
+  padding: 8px 10px;
+  background: linear-gradient(170deg, rgba(22, 40, 73, 0.75), rgba(12, 25, 48, 0.78));
+  border: 1px solid rgba(116, 141, 193, 0.26);
+}
+
+.channel-message-stats {
+  font-size: 12px;
+  color: #9fb2dc;
+}
+
+.channel-message-actions {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 8px;
+}
+
+.channel-message-actions .secondary-btn,
+.thread-node-actions .secondary-btn {
+  min-height: 40px;
+  padding: 8px 9px;
+  font-size: 13px;
+}
+
+.thread-summary {
+  color: #efd9a4;
+  border-color: rgba(212, 171, 90, 0.36);
+  background: linear-gradient(130deg, rgba(178, 137, 58, 0.2), rgba(24, 41, 74, 0.24));
+}
+
+.thread-node-card {
+  gap: 9px;
+  border-radius: 16px;
+  border-color: rgba(183, 150, 79, 0.3);
+}
+
+.thread-node-heading {
+  color: #f1dcab;
+  font-size: 15px;
+}
+
+.thread-node-meta {
+  color: #aebddd;
+  font-size: 12px;
+}
+
+.thread-node-body {
+  color: #eef3ff;
+  font-size: 14px;
+  line-height: 1.45;
+  white-space: pre-wrap;
+  word-break: break-word;
+  border-radius: 10px;
+  padding: 8px 10px;
+  background: linear-gradient(170deg, rgba(22, 40, 73, 0.72), rgba(12, 25, 48, 0.78));
+  border: 1px solid rgba(116, 141, 193, 0.24);
+}
+
+.thread-node-stats {
+  color: #99acd6;
+  font-size: 12px;
+}
+
+.thread-node-actions {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 8px;
+}
+
+.thread-node-level {
+  margin-left: calc(min(var(--depth, 0), 4) * 12px);
+}
+
+.thread-block {
+  gap: 8px;
+  border-radius: 15px;
+  padding: 10px;
+  border: 1px solid rgba(151, 174, 221, 0.2);
+  background: linear-gradient(160deg, rgba(10, 21, 43, 0.72), rgba(8, 16, 31, 0.78));
+}
+
+.thread-block--ancestors > .section-title {
+  color: #b9cbef;
+}
+
+.thread-block--ancestors {
+  border-color: rgba(141, 166, 214, 0.26);
+  background: linear-gradient(160deg, rgba(12, 28, 56, 0.73), rgba(7, 15, 32, 0.78));
+}
+
+.thread-block--focus > .section-title {
+  color: #f0d9a4;
+}
+
+.thread-block--focus {
+  border-color: rgba(214, 177, 95, 0.34);
+  background: linear-gradient(160deg, rgba(33, 44, 72, 0.68), rgba(12, 20, 36, 0.8));
+}
+
+.thread-block--replies > .section-title {
+  color: #c8d6f5;
+}
+
+.thread-block--replies {
+  border-color: rgba(161, 186, 233, 0.24);
+}
+
+.channel-main-action {
+  min-height: 48px;
+  border-radius: 13px;
+}
+
+.channel-back-btn {
+  min-height: 44px;
+}
+
+.channel-action-like.is-liked,
+.thread-like-btn.is-liked {
+  background: linear-gradient(120deg, rgba(128, 39, 56, 0.92), rgba(92, 26, 39, 0.94));
+  border-color: rgba(250, 145, 165, 0.54);
+  color: #ffe5ec;
+}
+
+.channel-action-reply,
+.thread-reply-btn {
+  border-color: rgba(152, 181, 240, 0.48);
+}
+
+.channel-action-thread {
+  border-color: rgba(216, 178, 95, 0.5);
+  color: #f3ddac;
+}
+
+@media (max-width: 430px) {
+  .channels-screen .page-title {
+    font-size: 26px;
+  }
+
+  .channels-screen--list .page-title {
+    font-size: 34px;
+  }
+
+  .channels-hero-title {
+    font-size: 24px;
+  }
+
+  .channels-action-btn {
+    min-height: 48px;
+    font-size: 12px;
+  }
+
+  .channel-row {
+    grid-template-columns: 40px minmax(0, 1fr) 64px;
+    gap: 10px;
+    padding: 12px;
+  }
+
+  .channel-row .avatar {
+    width: 38px;
+    height: 38px;
+    min-width: 38px;
+    min-height: 38px;
+  }
+
+  .channel-row-title {
+    font-size: 16px;
+  }
+
+  .channel-row-message {
+    font-size: 13px;
+  }
+
+  .channel-message-actions {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+}
+
+@media (max-width: 365px) {
+  .channels-screen .page-title {
+    font-size: 24px;
+  }
+
+  .channels-action-grid {
+    grid-template-columns: 1fr;
+  }
+
+  .channel-message-actions {
+    grid-template-columns: 1fr;
+  }
+
+  .thread-node-actions {
+    grid-template-columns: 1fr;
+  }
+}

shine-UI/styles/layout.css

@@ -7,9 +7,11 @@ body {
   width: min(100vw, 430px);
   height: 100dvh;
   position: relative;
-  background: linear-gradient(165deg, rgba(16, 22, 36, 0.96), rgba(11, 16, 27, 0.99));
+  background:
-  border-left: 1px solid rgba(255, 255, 255, 0.05);
+    radial-gradient(circle at 16% -8%, rgba(211, 168, 76, 0.16), transparent 38%),
-  border-right: 1px solid rgba(255, 255, 255, 0.05);
+    linear-gradient(165deg, rgba(10, 21, 44, 0.98), rgba(5, 11, 24, 0.99));
+  border-left: 1px solid rgba(211, 170, 86, 0.2);
+  border-right: 1px solid rgba(211, 170, 86, 0.2);
   box-shadow: var(--shadow);
   overflow: hidden;
 }
@@ -36,7 +38,7 @@ body {
   right: 0;
   bottom: 0;
   padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
-  background: linear-gradient(180deg, rgba(10, 14, 23, 0) 0%, rgba(10, 14, 23, 0.95) 42%);
+  background: linear-gradient(180deg, rgba(7, 12, 23, 0) 0%, rgba(6, 11, 22, 0.96) 44%);
 }
 
 @media (min-width: 900px) {

shine-UI/styles/main.css

@@ -1,14 +1,14 @@
 :root {
-  --bg-0: #080b12;
+  --bg-0: #050c1a;
-  --bg-1: #101624;
+  --bg-1: #0a1630;
-  --bg-2: #171f32;
+  --bg-2: #132346;
-  --card: #1a2436;
+  --card: #162646;
-  --card-soft: #202d45;
+  --card-soft: #1a2f55;
-  --line: #2a3854;
+  --line: #2f4777;
-  --text: #ebf1ff;
+  --text: #edf2ff;
-  --text-muted: #99a8cb;
+  --text-muted: #9eb0d8;
-  --accent: #53d8fb;
+  --accent: #d9b56f;
-  --accent-soft: rgba(83, 216, 251, 0.17);
+  --accent-soft: rgba(217, 181, 111, 0.18);
   --danger: #ff718f;
   --ok: #84f4a1;
   --radius-lg: 18px;
@@ -27,7 +27,10 @@ body {
   margin: 0;
   padding: 0;
   min-height: 100%;
-  background: radial-gradient(circle at 22% -10%, #1f355e 0%, var(--bg-0) 45%) fixed;
+  background:
+    radial-gradient(circle at 12% -8%, rgba(214, 176, 90, 0.24), transparent 35%),
+    radial-gradient(circle at 84% 4%, rgba(43, 78, 148, 0.42), transparent 38%),
+    linear-gradient(180deg, #050b18, #030812 70%) fixed;
   color: var(--text);
   font-family: var(--font-main);
 }

shine-server-blockchain/src/main/java/blockchain/MsgSubType.java

@@ -68,6 +68,8 @@ public final class MsgSubType {
 
     /** Лайк (LIKE). */
     public static final short REACTION_LIKE = 1;
+    /** Снятие лайка (UNLIKE). */
+    public static final short REACTION_UNLIKE = 2;
 
     /* ===================== CONNECTION (msg_type=3) ===================== */
 

shine-server-blockchain/src/main/java/blockchain/body/CreateChannelBody.java

@@ -6,6 +6,7 @@ import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
+import java.util.regex.Pattern;
 import java.util.Objects;
 
 /**
@@ -39,6 +40,10 @@ public final class CreateChannelBody implements BodyRecord, BodyHasLine {
     public static final short SUBTYPE = MsgSubType.TECH_CREATE_CHANNEL;
 
     private static final byte[] ZERO32 = new byte[32];
+    private static final int MIN_NAME_LENGTH = 3;
+    private static final int MAX_NAME_LENGTH = 32;
+    private static final Pattern ALLOWED_NAME_PATTERN =
+            Pattern.compile("^[\\p{IsLatin}\\p{IsCyrillic}0-9 _-]+$");
 
     public final short subType;   // из header
     public final short version;   // из header
@@ -121,14 +126,15 @@ public final class CreateChannelBody implements BodyRecord, BodyHasLine {
         if ((subType & 0xFFFF) != (SUBTYPE & 0xFFFF))
             throw new IllegalArgumentException("CreateChannelBody subType must be TECH_CREATE_CHANNEL(1)");
 
-        if (channelName == null || channelName.isBlank())
+        String normalizedName = normalizeDisplayName(channelName);
+        if (normalizedName.isEmpty())
             throw new IllegalArgumentException("channelName is blank");
-
+        int cpLen = normalizedName.codePointCount(0, normalizedName.length());
-        if (!channelName.matches("^[A-Za-z0-9_]+$"))
+        // Backward compatibility for historical blocks:
-            throw new IllegalArgumentException("channelName must match ^[A-Za-z0-9_]+$");
+        // strict create-channel rules are enforced in AddBlock handler (ChannelNameRules),
-
+        // but parser-level check must allow legacy channel names during bootstrap/replay.
-        if ("0".equals(channelName))
+        if (cpLen > MAX_NAME_LENGTH)
-            throw new IllegalArgumentException("channelName \"0\" is reserved");
+            throw new IllegalArgumentException("channelName length must be <=32");
 
         // tech-line: prev обязателен (минимум HEADER=0)
         if (prevLineNumber < 0)
@@ -141,6 +147,11 @@ public final class CreateChannelBody implements BodyRecord, BodyHasLine {
         return this;
     }
 
+    private static String normalizeDisplayName(String value) {
+        if (value == null) return "";
+        return value.trim().replaceAll("\\s+", " ");
+    }
+
     @Override
     public byte[] toBytes() {
         byte[] nameUtf8 = channelName.getBytes(StandardCharsets.UTF_8);

shine-server-blockchain/src/main/java/blockchain/body/ReactionBody.java

@@ -13,6 +13,7 @@ import java.util.Objects;
  *
  * subType (в заголовке блока):
  *   1 = LIKE
+ *   2 = UNLIKE
  *
  * bodyBytes (BigEndian), новый формат:
  *   [1] toBlockchainNameLen (uint8)
@@ -45,7 +46,7 @@ public final class ReactionBody implements BodyRecord, BodyHasTarget {
         if ((this.version & 0xFFFF) != (VER & 0xFFFF)) {
             throw new IllegalArgumentException("ReactionBody version must be 1, got=" + (this.version & 0xFFFF));
         }
-        if ((this.subType & 0xFFFF) != (MsgSubType.REACTION_LIKE & 0xFFFF)) {
+        if (!isSupportedSubType(this.subType)) {
             throw new IllegalArgumentException("Bad reaction subType: " + (this.subType & 0xFFFF));
         }
 
@@ -88,7 +89,7 @@ public final class ReactionBody implements BodyRecord, BodyHasTarget {
 
     @Override
     public ReactionBody check() {
-        if ((subType & 0xFFFF) != (MsgSubType.REACTION_LIKE & 0xFFFF))
+        if (!isSupportedSubType(subType))
             throw new IllegalArgumentException("Bad reaction subType: " + (subType & 0xFFFF));
 
         if (toBlockchainName == null || toBlockchainName.isBlank())
@@ -123,4 +124,10 @@ public final class ReactionBody implements BodyRecord, BodyHasTarget {
     @Override public String toBchName() { return toBlockchainName; }
     @Override public Integer toBlockGlobalNumber() { return toBlockGlobalNumber; }
     @Override public byte[] toBlockHashBytes() { return toBlockHash32; }
+
+    private static boolean isSupportedSubType(short subType) {
+        int st = subType & 0xFFFF;
+        return st == (MsgSubType.REACTION_LIKE & 0xFFFF)
+                || st == (MsgSubType.REACTION_UNLIKE & 0xFFFF);
+    }
 }

shine-server-db/src/main/java/shine/db/DatabaseInitializer.java

@@ -36,6 +36,7 @@ public final class DatabaseInitializer {
     /* ===================== REACTION (msg_type=2) ===================== */
 
     public static final short REACTION_LIKE = 1;
+    public static final short REACTION_UNLIKE = 2;
 
     /* ===================== CONNECTION (msg_type=3) ===================== */
     public static final short CONNECTION_FRIEND     = 10;
@@ -273,12 +274,12 @@ public final class DatabaseInitializer {
                     rel_type        INTEGER NOT NULL,
                     to_login        TEXT    NOT NULL,
                     to_bch_name     TEXT    NOT NULL,
-                    to_block_number INTEGER,
+                    to_block_number INTEGER NOT NULL,
-                    to_block_hash   BLOB,
+                    to_block_hash   BLOB    NOT NULL,
 
                     FOREIGN KEY (login) REFERENCES solana_users(login),
 
-                    UNIQUE (login, rel_type, to_login)
+                    UNIQUE (login, rel_type, to_login, to_bch_name, to_block_number, to_block_hash)
                 );
                 """);
 
@@ -297,6 +298,11 @@ public final class DatabaseInitializer {
                 ON connections_state (login, to_login);
                 """);
 
+            st.executeUpdate("""
+                CREATE INDEX IF NOT EXISTS idx_connections_state_target
+                ON connections_state (login, rel_type, to_bch_name, to_block_number);
+                """);
+
             // 8) message_stats
             st.executeUpdate("""
                 CREATE TABLE IF NOT EXISTS message_stats (
@@ -328,7 +334,69 @@ public final class DatabaseInitializer {
                 ON message_stats (to_login);
                 """);
 
-            // 9) direct_messages
+            // 8.1) reactions_state (идемпотентный LIKE/UNLIKE per actor/target)
+            st.executeUpdate("""
+                CREATE TABLE IF NOT EXISTS reactions_state (
+                    from_login       TEXT    NOT NULL,
+                    from_bch_name    TEXT    NOT NULL,
+                    reaction_type    INTEGER NOT NULL,
+                    to_login         TEXT    NOT NULL,
+                    to_bch_name      TEXT    NOT NULL,
+                    to_block_number  INTEGER NOT NULL,
+                    to_block_hash    BLOB    NOT NULL,
+                    last_sub_type    INTEGER NOT NULL,
+
+                    UNIQUE (
+                        from_login,
+                        from_bch_name,
+                        reaction_type,
+                        to_login,
+                        to_bch_name,
+                        to_block_number,
+                        to_block_hash
+                    )
+                );
+                """);
+
+            st.executeUpdate("""
+                CREATE INDEX IF NOT EXISTS idx_reactions_state_target
+                ON reactions_state (to_bch_name, to_block_number, to_block_hash);
+                """);
+
+            st.executeUpdate("""
+                CREATE INDEX IF NOT EXISTS idx_reactions_state_actor
+                ON reactions_state (from_login, from_bch_name, reaction_type);
+                """);
+
+            // 9) channel_names_state (global normalized channel names)
+            st.executeUpdate("""
+                CREATE TABLE IF NOT EXISTS channel_names_state (
+                    slug                      TEXT    NOT NULL PRIMARY KEY,
+                    display_name              TEXT    NOT NULL,
+                    owner_login               TEXT    NOT NULL,
+                    owner_bch_name            TEXT    NOT NULL,
+                    channel_root_block_number INTEGER NOT NULL,
+                    channel_root_block_hash   BLOB    NOT NULL,
+                    created_at_ms             INTEGER NOT NULL
+                );
+                """);
+
+            st.executeUpdate("""
+                CREATE UNIQUE INDEX IF NOT EXISTS uq_channel_names_state_slug
+                ON channel_names_state (slug);
+                """);
+
+            st.executeUpdate("""
+                CREATE UNIQUE INDEX IF NOT EXISTS uq_channel_names_state_target
+                ON channel_names_state (owner_bch_name, channel_root_block_number, channel_root_block_hash);
+                """);
+
+            st.executeUpdate("""
+                CREATE INDEX IF NOT EXISTS idx_channel_names_state_owner
+                ON channel_names_state (owner_login, owner_bch_name);
+                """);
+
+            // 10) direct_messages
             st.executeUpdate("""
                 CREATE TABLE IF NOT EXISTS direct_messages (
                     message_id     TEXT    NOT NULL PRIMARY KEY,
@@ -351,7 +419,7 @@ public final class DatabaseInitializer {
                 ON direct_messages (from_login, created_at_ms);
                 """);
 
-            // 10) user_push_tokens
+            // 11) user_push_tokens
             st.executeUpdate("""
                 CREATE TABLE IF NOT EXISTS user_push_tokens (
                     token_id       TEXT    NOT NULL PRIMARY KEY,

shine-server-db/src/main/java/shine/db/DatabaseTriggersInstaller.java

@@ -1,52 +1,55 @@
 package shine.db;
 
 import java.sql.SQLException;
+import java.sql.ResultSet;
 import java.sql.Statement;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
- * DatabaseTriggersInstaller — устанавливает триггеры, которые поддерживают бизнес-логику БД.
+ * DatabaseTriggersInstaller — устанавливает триггеры, которые поддерживают бизнес-логику БД.
  *
- * Мы специально сделали триггеры максимально "совместимыми":
+ * Мы специально сделали триггеры максимально "совместимыми":
- *  - НЕТ динамических сообщений в RAISE(...): только фиксированные строки.
+ *  - НЕТ динамических сообщений в RAISE(...): только фиксированные строки.
- *    (Некоторые SQLite-сборки / просмотрщики падают на "||" внутри RAISE.)
+ *    (Некоторые SQLite-сборки / просмотрщики падают на "||" внутри RAISE.)
- *  - НЕТ UPSERT "ON CONFLICT DO UPDATE" — вместо него:
+ *  - НЕТ UPSERT "ON CONFLICT DO UPDATE" — вместо него:
  *      INSERT OR IGNORE + UPDATE
- *    (Старые SQLite не знают UPSERT.)
+ *    (Старые SQLite не знают UPSERT.)
  *
  * =============================================================================
- * ОПИСАНИЕ ТРИГГЕРОВ
+ * ОПИСАНИЕ ТРИГГЕРОВ
  * =============================================================================
  *
  * [1] trg_blocks_line_integrity_bi  (BEFORE INSERT ON blocks)
- *     Контроль целостности "линий" (line_code / prev_line_number / prev_line_hash / this_line_number).
+ *     Контроль целостности "линий" (line_code / prev_line_number / prev_line_hash / this_line_number).
  *
- *     Зачем это нужно:
+ *     Зачем это нужно:
- *       - В каналах/ветках/действиях ты хочешь иметь "линейную" последовательность,
+ *       - В каналах/ветках/действиях ты хочешь иметь "линейную" последовательность,
- *         где каждый следующий блок явно ссылается на предыдущий блок линии
+ *         где каждый следующий блок явно ссылается на предыдущий блок линии
- *         и подтверждает, что ссылка не подменена.
+ *         и подтверждает, что ссылка не подменена.
  *
- *     Когда срабатывает:
+ *     Когда срабатывает:
- *       - ТОЛЬКО если при вставке передано ХОТЯ БЫ ОДНО из line-полей.
+ *       - ТОЛЬКО если при вставке передано ХОТЯ БЫ ОДНО из line-полей.
- *       - Если line-поля не переданы — триггер вообще не работает (это важно).
+ *       - Если line-поля не переданы — триггер вообще не работает (это важно).
  *
- *     Что проверяет:
+ *     Что проверяет:
- *       A) line-поля допускаются только для msg_type:
+ *       A) line-поля допускаются только для msg_type:
  *          0 (TECH), 1 (TEXT), 3 (CONNECTION), 4 (USER_PARAM)
- *       B) Если пришло хоть одно line-поле — обязаны прийти ВСЕ 4 (никаких "частичных")
+ *       B) Если пришло хоть одно line-поле — обязаны прийти ВСЕ 4 (никаких "частичных")
- *       C) prev-блок линии существует в той же цепочке bch_name
+ *       C) prev-блок линии существует в той же цепочке bch_name
- *       D) prev_hash совпадает с block_hash найденного prev-блока
+ *       D) prev_hash совпадает с block_hash найденного prev-блока
- *       E) line_code корректный:
+ *       E) line_code корректный:
- *          - либо первый шаг после root: prev_line_number == line_code
+ *          - либо первый шаг после root: prev_line_number == line_code
- *          - либо prev уже принадлежит этой линии: p.line_code == NEW.line_code
+ *          - либо prev уже принадлежит этой линии: p.line_code == NEW.line_code
  *       F) this_line_number:
- *          - первый шаг после root:
+ *          - первый шаг после root:
  *              TEXT: this_line_number = 0
  *              TECH/CONNECTION/USER_PARAM: this_line_number = 1
- *          - обычный шаг:
+ *          - обычный шаг:
- *              TEXT: допускаем same или +1 (чтобы "edit" мог не двигать шаг)
+ *              TEXT: допускаем same или +1 (чтобы "edit" мог не двигать шаг)
- *              TECH/CONNECTION/USER_PARAM: строго prev.this + 1
+ *              TECH/CONNECTION/USER_PARAM: строго prev.this + 1
  *
- *     Какие ошибки кидает:
+ *     Какие ошибки кидает:
  *       - LINE_ERR_UNSUPPORTED_TYPE_WITH_LINE
  *       - LINE_ERR_PARTIAL_FIELDS
  *       - LINE_ERR_NO_PREV
@@ -56,28 +59,30 @@ import java.sql.Statement;
  *       - LINE_ERR_THIS_LINE_BAD_STEP
  *
  * [2] trg_blocks_connection_state_ai  (AFTER INSERT ON blocks WHEN msg_type=3)
- *     Поддерживает таблицу connections_state как "текущее состояние" отношений:
+ *     Поддерживает таблицу connections_state как "текущее состояние" отношений:
- *       - FRIEND/CONTACT/FOLLOW  -> добавить/обновить состояние
+ *       - FRIEND/CONTACT/FOLLOW  -> добавить/обновить состояние
- *       - UNFRIEND/UNCONTACT/UNFOLLOW -> удалить соответствующее "позитивное" состояние
+ *       - UNFRIEND/UNCONTACT/UNFOLLOW -> удалить соответствующее "позитивное" состояние
  *
  * [3] trg_blocks_message_stats_like_ai (AFTER INSERT ON blocks WHEN msg_type=2 AND sub_type=LIKE)
- *     Поддерживает likes_count в message_stats для цели (to_*).
+ *     Поддерживает likes_count в message_stats для цели (to_*).
  *
  * [4] trg_blocks_message_stats_reply_ai (AFTER INSERT ON blocks WHEN msg_type=1 AND sub_type=REPLY)
- *     Поддерживает replies_count в message_stats.
+ *     Поддерживает replies_count в message_stats.
  *
  * [5] trg_blocks_edit_apply_ai (AFTER INSERT ON blocks WHEN msg_type=1 AND sub_type=EDIT)
- *     Логика edit:
+ *     Логика edit:
- *       - помечает исходный блок edited_by_block_number = NEW.block_number
+ *       - помечает исходный блок edited_by_block_number = NEW.block_number
- *       - увеличивает edits_count в message_stats
+ *       - увеличивает edits_count в message_stats
  */
 public final class DatabaseTriggersInstaller {
 
     private DatabaseTriggersInstaller() {}
 
     public static void createAllTriggers(Statement st) throws SQLException {
-        // На всякий случай убираем старые "криво названные" триггеры,
+        dropTriggersByPrefix(st, "trg_blocks_");
-        // если они когда-то попадали в БД.
+
+        // На всякий случай убираем старые "криво названные" триггеры,
+        // если они когда-то попадали в БД.
         st.executeUpdate("DROP TRIGGER IF EXISTS trg_block_lini_integriti_by;");
         st.executeUpdate("DROP TRIGGER IF EXISTS trg_blocks_line_integrity_bi;");
 
@@ -93,6 +98,24 @@ public final class DatabaseTriggersInstaller {
         createEditApplyTrigger(st);
     }
 
+    private static void dropTriggersByPrefix(Statement st, String prefix) throws SQLException {
+        List<String> triggerNames = new ArrayList<>();
+        String sql = "SELECT name FROM sqlite_master WHERE type='trigger' AND name LIKE '" + prefix + "%'";
+        try (ResultSet rs = st.executeQuery(sql)) {
+            while (rs.next()) {
+                String name = rs.getString("name");
+                if (name != null && !name.isBlank()) {
+                    triggerNames.add(name);
+                }
+            }
+        }
+
+        for (String name : triggerNames) {
+            String safeName = name.replace("\"", "\"\"");
+            st.executeUpdate("DROP TRIGGER IF EXISTS \"" + safeName + "\"");
+        }
+    }
+
     private static void createLineIntegrityTrigger(Statement st) throws SQLException {
         st.executeUpdate("""
             CREATE TRIGGER IF NOT EXISTS trg_blocks_line_integrity_bi
@@ -182,7 +205,7 @@ public final class DatabaseTriggersInstaller {
             WHEN NEW.msg_type = 3
             BEGIN
                 -- FRIEND/CONTACT/FOLLOW:
-                -- 1) если записи нет — создаём
+                -- 1) если записи нет — создаём
                 INSERT OR IGNORE INTO connections_state (
                     login, rel_type, to_login, to_bch_name, to_block_number, to_block_hash
                 )
@@ -197,7 +220,7 @@ public final class DatabaseTriggersInstaller {
                   AND NEW.to_login IS NOT NULL
                   AND NEW.to_bch_name IS NOT NULL;
 
-                -- 2) если запись есть — обновляем актуальные to_*
+                -- 2) если запись есть — обновляем актуальные to_*
                 UPDATE connections_state
                 SET
                     to_bch_name     = NEW.to_bch_name,
@@ -211,7 +234,7 @@ public final class DatabaseTriggersInstaller {
                   AND NEW.to_bch_name IS NOT NULL;
 
                 -- UNFRIEND/UNCONTACT/UNFOLLOW:
-                -- удаляем соответствующее "позитивное" состояние
+                -- удаляем соответствующее "позитивное" состояние
                 DELETE FROM connections_state
                 WHERE login = NEW.login
                   AND to_login = NEW.to_login
@@ -237,13 +260,14 @@ public final class DatabaseTriggersInstaller {
 
     private static void createMessageStatsLikeTrigger(Statement st) throws SQLException {
         int LIKE = (int) DatabaseInitializer.REACTION_LIKE;
+        int UNLIKE = (int) DatabaseInitializer.REACTION_UNLIKE;
 
         st.executeUpdate("""
             CREATE TRIGGER IF NOT EXISTS trg_blocks_message_stats_like_ai
             AFTER INSERT ON blocks
-            WHEN NEW.msg_type = 2 AND NEW.msg_sub_type = %d
+            WHEN NEW.msg_type = 2 AND NEW.msg_sub_type IN (%d, %d)
             BEGIN
-                -- создаём строку, если её не было
+                -- ensure target stats row exists
                 INSERT OR IGNORE INTO message_stats (
                     to_login, to_bch_name, to_block_number, to_block_hash,
                     likes_count, replies_count, edits_count
@@ -256,9 +280,48 @@ public final class DatabaseTriggersInstaller {
                   AND NEW.to_block_number IS NOT NULL
                   AND NEW.to_block_hash IS NOT NULL;
 
-                -- +1 like
+                -- apply delta by state transition (none/unlike->like = +1, like->unlike = -1)
                 UPDATE message_stats
-                SET likes_count = likes_count + 1
+                SET likes_count = MAX(
+                    0,
+                    likes_count + (
+                        CASE
+                            WHEN NEW.msg_sub_type = %d
+                                 AND COALESCE((
+                                     SELECT b.msg_sub_type
+                                     FROM blocks b
+                                     WHERE b.login = NEW.login
+                                       AND b.bch_name = NEW.bch_name
+                                       AND b.msg_type = 2
+                                       AND b.to_login = NEW.to_login
+                                       AND b.to_bch_name = NEW.to_bch_name
+                                       AND b.to_block_number = NEW.to_block_number
+                                       AND b.to_block_hash = NEW.to_block_hash
+                                       AND b.block_number < NEW.block_number
+                                     ORDER BY b.block_number DESC
+                                     LIMIT 1
+                                 ), -1) <> %d
+                            THEN 1
+                            WHEN NEW.msg_sub_type = %d
+                                 AND COALESCE((
+                                     SELECT b.msg_sub_type
+                                     FROM blocks b
+                                     WHERE b.login = NEW.login
+                                       AND b.bch_name = NEW.bch_name
+                                       AND b.msg_type = 2
+                                       AND b.to_login = NEW.to_login
+                                       AND b.to_bch_name = NEW.to_bch_name
+                                       AND b.to_block_number = NEW.to_block_number
+                                       AND b.to_block_hash = NEW.to_block_hash
+                                       AND b.block_number < NEW.block_number
+                                     ORDER BY b.block_number DESC
+                                     LIMIT 1
+                                 ), -1) = %d
+                            THEN -1
+                            ELSE 0
+                        END
+                    )
+                )
                 WHERE to_login = NEW.to_login
                   AND to_bch_name = NEW.to_bch_name
                   AND to_block_number = NEW.to_block_number
@@ -267,8 +330,43 @@ public final class DatabaseTriggersInstaller {
                   AND NEW.to_bch_name IS NOT NULL
                   AND NEW.to_block_number IS NOT NULL
                   AND NEW.to_block_hash IS NOT NULL;
+
+                -- persist latest actor->target reaction state
+                INSERT OR IGNORE INTO reactions_state (
+                    from_login, from_bch_name, reaction_type,
+                    to_login, to_bch_name, to_block_number, to_block_hash,
+                    last_sub_type
+                )
+                SELECT
+                    NEW.login, NEW.bch_name, %d,
+                    NEW.to_login, NEW.to_bch_name, NEW.to_block_number, NEW.to_block_hash,
+                    NEW.msg_sub_type
+                WHERE NEW.to_login IS NOT NULL
+                  AND NEW.to_bch_name IS NOT NULL
+                  AND NEW.to_block_number IS NOT NULL
+                  AND NEW.to_block_hash IS NOT NULL;
+
+                UPDATE reactions_state
+                SET last_sub_type = NEW.msg_sub_type
+                WHERE from_login = NEW.login
+                  AND from_bch_name = NEW.bch_name
+                  AND reaction_type = %d
+                  AND to_login = NEW.to_login
+                  AND to_bch_name = NEW.to_bch_name
+                  AND to_block_number = NEW.to_block_number
+                  AND to_block_hash = NEW.to_block_hash
+                  AND NEW.to_login IS NOT NULL
+                  AND NEW.to_bch_name IS NOT NULL
+                  AND NEW.to_block_number IS NOT NULL
+                  AND NEW.to_block_hash IS NOT NULL;
             END;
-            """.formatted(LIKE));
+            """.formatted(
+                LIKE, UNLIKE,
+                LIKE, LIKE,
+                UNLIKE, LIKE,
+                LIKE,
+                LIKE
+            ));
     }
 
     private static void createMessageStatsReplyTrigger(Statement st) throws SQLException {
@@ -314,7 +412,7 @@ public final class DatabaseTriggersInstaller {
             AFTER INSERT ON blocks
             WHEN NEW.msg_type = 1 AND NEW.msg_sub_type IN (%d, %d)
             BEGIN
-                -- 1) помечаем исходный блок, что его "перекрыл" этот edit
+                -- 1) помечаем исходный блок, что его "перекрыл" этот edit
                 UPDATE blocks
                 SET edited_by_block_number = NEW.block_number
                 WHERE login = NEW.login
@@ -322,7 +420,7 @@ public final class DatabaseTriggersInstaller {
                   AND block_number = NEW.to_block_number
                   AND NEW.to_block_number IS NOT NULL;
 
-                -- 2) создаём stats-строку если её не было
+                -- 2) создаём stats-строку если её не было
                 INSERT OR IGNORE INTO message_stats (
                     to_login, to_bch_name, to_block_number, to_block_hash,
                     likes_count, replies_count, edits_count
@@ -350,3 +448,4 @@ public final class DatabaseTriggersInstaller {
             """.formatted(EDIT_POST, EDIT_REPLY));
     }
 }
+

shine-server-db/src/main/java/shine/db/MsgSubType.java

@@ -34,6 +34,8 @@ public final class MsgSubType {
 
     /** Лайк (LIKE). */
     public static final short REACTION_LIKE = 1;
+    /** Снятие лайка (UNLIKE). */
+    public static final short REACTION_UNLIKE = 2;
 
     /* ===================== CONNECTION (msg_type=3) ===================== */
     /**

shine-server-db/src/main/java/shine/db/SqliteDbController.java

@@ -7,6 +7,7 @@ import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.sql.Connection;
 import java.sql.DriverManager;
+import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 
@@ -37,6 +38,7 @@ public final class SqliteDbController {
         }
 
         this.jdbcUrl = "jdbc:sqlite:" + dbPath;
+        ensureSchemaUpgrades();
     }
 
     public static SqliteDbController getInstance() {
@@ -67,4 +69,203 @@ public final class SqliteDbController {
     public void close() {
         // no-op
     }
+
+    private void ensureSchemaUpgrades() {
+        try (Connection c = DriverManager.getConnection(jdbcUrl);
+             Statement st = c.createStatement()) {
+
+            c.setAutoCommit(false);
+            try {
+                st.execute("PRAGMA foreign_keys = OFF");
+
+                ensureReactionsStateTable(st);
+
+                if (!tableExists(c, "connections_state")) {
+                    createConnectionsStateTable(st);
+                } else if (needsConnectionsStateUpgrade(c)) {
+                    rebuildConnectionsStateTable(st);
+                }
+                ensureChannelNamesStateTable(st);
+                ensureConnectionsIndexes(st);
+                ensureReactionsIndexes(st);
+                ensureChannelNamesIndexes(st);
+
+                DatabaseTriggersInstaller.createAllTriggers(st);
+
+                st.execute("PRAGMA foreign_keys = ON");
+                c.commit();
+            } catch (Exception e) {
+                try { c.rollback(); } catch (Exception ignored) {}
+                throw new RuntimeException("DB schema upgrade failed", e);
+            } finally {
+                try { c.setAutoCommit(true); } catch (Exception ignored) {}
+            }
+        } catch (SQLException e) {
+            throw new RuntimeException("DB schema upgrade failed", e);
+        }
+    }
+
+    private static void ensureReactionsStateTable(Statement st) throws SQLException {
+        st.executeUpdate("""
+            CREATE TABLE IF NOT EXISTS reactions_state (
+                from_login       TEXT    NOT NULL,
+                from_bch_name    TEXT    NOT NULL,
+                reaction_type    INTEGER NOT NULL,
+                to_login         TEXT    NOT NULL,
+                to_bch_name      TEXT    NOT NULL,
+                to_block_number  INTEGER NOT NULL,
+                to_block_hash    BLOB    NOT NULL,
+                last_sub_type    INTEGER NOT NULL,
+                UNIQUE (
+                    from_login,
+                    from_bch_name,
+                    reaction_type,
+                    to_login,
+                    to_bch_name,
+                    to_block_number,
+                    to_block_hash
+                )
+            );
+            """);
+    }
+
+    private static void createConnectionsStateTable(Statement st) throws SQLException {
+        st.executeUpdate("""
+            CREATE TABLE IF NOT EXISTS connections_state (
+                login           TEXT    NOT NULL,
+                rel_type        INTEGER NOT NULL,
+                to_login        TEXT    NOT NULL,
+                to_bch_name     TEXT    NOT NULL,
+                to_block_number INTEGER NOT NULL,
+                to_block_hash   BLOB    NOT NULL,
+                FOREIGN KEY (login) REFERENCES solana_users(login),
+                UNIQUE (login, rel_type, to_login, to_bch_name, to_block_number, to_block_hash)
+            );
+            """);
+    }
+
+    private static void ensureConnectionsIndexes(Statement st) throws SQLException {
+        st.executeUpdate("""
+            CREATE INDEX IF NOT EXISTS idx_connections_state_login
+            ON connections_state (login);
+            """);
+        st.executeUpdate("""
+            CREATE INDEX IF NOT EXISTS idx_connections_state_to_login
+            ON connections_state (to_login);
+            """);
+        st.executeUpdate("""
+            CREATE INDEX IF NOT EXISTS idx_connections_state_pair
+            ON connections_state (login, to_login);
+            """);
+        st.executeUpdate("""
+            CREATE INDEX IF NOT EXISTS idx_connections_state_target
+            ON connections_state (login, rel_type, to_bch_name, to_block_number);
+            """);
+    }
+
+    private static void ensureReactionsIndexes(Statement st) throws SQLException {
+        st.executeUpdate("""
+            CREATE INDEX IF NOT EXISTS idx_reactions_state_target
+            ON reactions_state (to_bch_name, to_block_number, to_block_hash);
+            """);
+        st.executeUpdate("""
+            CREATE INDEX IF NOT EXISTS idx_reactions_state_actor
+            ON reactions_state (from_login, from_bch_name, reaction_type);
+            """);
+    }
+
+    private static void ensureChannelNamesStateTable(Statement st) throws SQLException {
+        st.executeUpdate("""
+            CREATE TABLE IF NOT EXISTS channel_names_state (
+                slug                      TEXT    NOT NULL PRIMARY KEY,
+                display_name              TEXT    NOT NULL,
+                owner_login               TEXT    NOT NULL,
+                owner_bch_name            TEXT    NOT NULL,
+                channel_root_block_number INTEGER NOT NULL,
+                channel_root_block_hash   BLOB    NOT NULL,
+                created_at_ms             INTEGER NOT NULL
+            );
+            """);
+    }
+
+    private static void ensureChannelNamesIndexes(Statement st) throws SQLException {
+        st.executeUpdate("""
+            CREATE UNIQUE INDEX IF NOT EXISTS uq_channel_names_state_slug
+            ON channel_names_state (slug);
+            """);
+        st.executeUpdate("""
+            CREATE UNIQUE INDEX IF NOT EXISTS uq_channel_names_state_target
+            ON channel_names_state (owner_bch_name, channel_root_block_number, channel_root_block_hash);
+            """);
+        st.executeUpdate("""
+            CREATE INDEX IF NOT EXISTS idx_channel_names_state_owner
+            ON channel_names_state (owner_login, owner_bch_name);
+            """);
+    }
+
+    private static void rebuildConnectionsStateTable(Statement st) throws SQLException {
+        st.executeUpdate("DROP TABLE IF EXISTS connections_state_v2");
+        st.executeUpdate("""
+            CREATE TABLE connections_state_v2 (
+                login           TEXT    NOT NULL,
+                rel_type        INTEGER NOT NULL,
+                to_login        TEXT    NOT NULL,
+                to_bch_name     TEXT    NOT NULL,
+                to_block_number INTEGER NOT NULL,
+                to_block_hash   BLOB    NOT NULL,
+                FOREIGN KEY (login) REFERENCES solana_users(login),
+                UNIQUE (login, rel_type, to_login, to_bch_name, to_block_number, to_block_hash)
+            );
+            """);
+
+        st.executeUpdate("""
+            INSERT OR IGNORE INTO connections_state_v2
+                (login, rel_type, to_login, to_bch_name, to_block_number, to_block_hash)
+            SELECT
+                login,
+                rel_type,
+                to_login,
+                to_bch_name,
+                COALESCE(to_block_number, 0),
+                COALESCE(to_block_hash, zeroblob(32))
+            FROM connections_state
+            WHERE login IS NOT NULL
+              AND to_login IS NOT NULL
+              AND to_bch_name IS NOT NULL;
+            """);
+
+        st.executeUpdate("DROP TABLE connections_state");
+        st.executeUpdate("ALTER TABLE connections_state_v2 RENAME TO connections_state");
+    }
+
+    private static boolean tableExists(Connection c, String tableName) throws SQLException {
+        String sql = "SELECT 1 FROM sqlite_master WHERE type='table' AND name=? LIMIT 1";
+        try (var ps = c.prepareStatement(sql)) {
+            ps.setString(1, tableName);
+            try (ResultSet rs = ps.executeQuery()) {
+                return rs.next();
+            }
+        }
+    }
+
+    private static boolean needsConnectionsStateUpgrade(Connection c) throws SQLException {
+        boolean toBlockNumberNotNull = false;
+        boolean toBlockHashNotNull = false;
+
+        try (Statement st = c.createStatement();
+             ResultSet rs = st.executeQuery("PRAGMA table_info(connections_state)")) {
+            while (rs.next()) {
+                String name = rs.getString("name");
+                int notNull = rs.getInt("notnull");
+                if ("to_block_number".equalsIgnoreCase(name)) {
+                    toBlockNumberNotNull = notNull == 1;
+                }
+                if ("to_block_hash".equalsIgnoreCase(name)) {
+                    toBlockHashNotNull = notNull == 1;
+                }
+            }
+        }
+
+        return !toBlockNumberNotNull || !toBlockHashNotNull;
+    }
 }

shine-server-db/src/main/java/shine/db/channels/ChannelNameRules.java

@@ -0,0 +1,84 @@
+package shine.db.channels;
+
+import java.util.Locale;
+import java.util.regex.Pattern;
+
+public final class ChannelNameRules {
+    private static final int MIN_DISPLAY_NAME_LENGTH = 3;
+    private static final int MAX_DISPLAY_NAME_LENGTH = 32;
+    private static final Pattern DISPLAY_ALLOWED_PATTERN =
+            Pattern.compile("^[\\p{IsLatin}\\p{IsCyrillic}0-9 _-]+$");
+
+    private ChannelNameRules() {}
+
+    public static String normalizeDisplayName(String value) {
+        if (value == null) return "";
+        return value.trim().replaceAll("\\s+", " ");
+    }
+
+    public static String requireValidDisplayNameForCreate(String rawName) {
+        String normalized = normalizeDisplayName(rawName);
+        if (normalized.isEmpty()) {
+            throw new IllegalArgumentException("channelName is blank");
+        }
+
+        int length = normalized.codePointCount(0, normalized.length());
+        if (length < MIN_DISPLAY_NAME_LENGTH || length > MAX_DISPLAY_NAME_LENGTH) {
+            throw new IllegalArgumentException("channelName length must be 3..32");
+        }
+
+        if (!DISPLAY_ALLOWED_PATTERN.matcher(normalized).matches()) {
+            throw new IllegalArgumentException("channelName contains unsupported characters");
+        }
+
+        return normalized;
+    }
+
+    public static String toCanonicalSlug(String rawName) {
+        String normalized = normalizeDisplayName(rawName);
+        if (normalized.isEmpty()) {
+            throw new IllegalArgumentException("channelName is blank");
+        }
+
+        String lowered = normalized.toLowerCase(Locale.ROOT).replace('\u0451', '\u0435');
+        StringBuilder slug = new StringBuilder(lowered.length());
+        boolean pendingSeparator = false;
+
+        for (int i = 0; i < lowered.length(); ) {
+            int cp = lowered.codePointAt(i);
+            i += Character.charCount(cp);
+
+            if (cp == ' ' || cp == '_' || cp == '-') {
+                pendingSeparator = slug.length() > 0;
+                continue;
+            }
+
+            if (!isLatinOrCyrillicOrDigit(cp)) {
+                throw new IllegalArgumentException("channelName contains unsupported characters");
+            }
+
+            if (pendingSeparator && slug.length() > 0) {
+                slug.append('-');
+            }
+            pendingSeparator = false;
+            slug.appendCodePoint(cp);
+        }
+
+        int len = slug.length();
+        if (len > 0 && slug.charAt(len - 1) == '-') {
+            slug.deleteCharAt(len - 1);
+        }
+
+        if (slug.length() == 0) {
+            throw new IllegalArgumentException("channelName canonical slug is empty");
+        }
+
+        return slug.toString();
+    }
+
+    private static boolean isLatinOrCyrillicOrDigit(int cp) {
+        if (Character.isDigit(cp)) return true;
+        Character.UnicodeScript script = Character.UnicodeScript.of(cp);
+        return script == Character.UnicodeScript.LATIN || script == Character.UnicodeScript.CYRILLIC;
+    }
+}

shine-server-db/src/main/java/shine/db/dao/ChannelNameStateDAO.java

@@ -0,0 +1,78 @@
+package shine.db.dao;
+
+import shine.db.SqliteDbController;
+import shine.db.entities.ChannelNameStateEntry;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.List;
+
+public final class ChannelNameStateDAO {
+    private static volatile ChannelNameStateDAO instance;
+    private final SqliteDbController db = SqliteDbController.getInstance();
+
+    private ChannelNameStateDAO() {}
+
+    public static ChannelNameStateDAO getInstance() {
+        if (instance == null) {
+            synchronized (ChannelNameStateDAO.class) {
+                if (instance == null) instance = new ChannelNameStateDAO();
+            }
+        }
+        return instance;
+    }
+
+    public boolean existsBySlug(Connection c, String slug) throws SQLException {
+        String sql = "SELECT 1 FROM channel_names_state WHERE slug = ? LIMIT 1";
+        try (PreparedStatement ps = c.prepareStatement(sql)) {
+            ps.setString(1, slug);
+            try (ResultSet rs = ps.executeQuery()) {
+                return rs.next();
+            }
+        }
+    }
+
+    public boolean existsBySlug(String slug) throws SQLException {
+        try (Connection c = db.getConnection()) {
+            return existsBySlug(c, slug);
+        }
+    }
+
+    public void clearAll(Connection c) throws SQLException {
+        try (PreparedStatement ps = c.prepareStatement("DELETE FROM channel_names_state")) {
+            ps.executeUpdate();
+        }
+    }
+
+    public void insert(Connection c, ChannelNameStateEntry entry) throws SQLException {
+        String sql = """
+                INSERT INTO channel_names_state (
+                    slug,
+                    display_name,
+                    owner_login,
+                    owner_bch_name,
+                    channel_root_block_number,
+                    channel_root_block_hash,
+                    created_at_ms
+                ) VALUES (?, ?, ?, ?, ?, ?, ?)
+                """;
+        try (PreparedStatement ps = c.prepareStatement(sql)) {
+            ps.setString(1, entry.getSlug());
+            ps.setString(2, entry.getDisplayName());
+            ps.setString(3, entry.getOwnerLogin());
+            ps.setString(4, entry.getOwnerBlockchainName());
+            ps.setInt(5, entry.getChannelRootBlockNumber());
+            ps.setBytes(6, entry.getChannelRootBlockHash());
+            ps.setLong(7, entry.getCreatedAtMs());
+            ps.executeUpdate();
+        }
+    }
+
+    public void insertAll(Connection c, List<ChannelNameStateEntry> entries) throws SQLException {
+        for (ChannelNameStateEntry entry : entries) {
+            insert(c, entry);
+        }
+    }
+}

shine-server-db/src/main/java/shine/db/entities/ChannelNameStateEntry.java

@@ -0,0 +1,69 @@
+package shine.db.entities;
+
+import java.util.Arrays;
+
+public class ChannelNameStateEntry {
+    private String slug;
+    private String displayName;
+    private String ownerLogin;
+    private String ownerBlockchainName;
+    private int channelRootBlockNumber;
+    private byte[] channelRootBlockHash;
+    private long createdAtMs;
+
+    public String getSlug() {
+        return slug;
+    }
+
+    public void setSlug(String slug) {
+        this.slug = slug;
+    }
+
+    public String getDisplayName() {
+        return displayName;
+    }
+
+    public void setDisplayName(String displayName) {
+        this.displayName = displayName;
+    }
+
+    public String getOwnerLogin() {
+        return ownerLogin;
+    }
+
+    public void setOwnerLogin(String ownerLogin) {
+        this.ownerLogin = ownerLogin;
+    }
+
+    public String getOwnerBlockchainName() {
+        return ownerBlockchainName;
+    }
+
+    public void setOwnerBlockchainName(String ownerBlockchainName) {
+        this.ownerBlockchainName = ownerBlockchainName;
+    }
+
+    public int getChannelRootBlockNumber() {
+        return channelRootBlockNumber;
+    }
+
+    public void setChannelRootBlockNumber(int channelRootBlockNumber) {
+        this.channelRootBlockNumber = channelRootBlockNumber;
+    }
+
+    public byte[] getChannelRootBlockHash() {
+        return channelRootBlockHash == null ? null : Arrays.copyOf(channelRootBlockHash, channelRootBlockHash.length);
+    }
+
+    public void setChannelRootBlockHash(byte[] channelRootBlockHash) {
+        this.channelRootBlockHash = channelRootBlockHash == null ? null : Arrays.copyOf(channelRootBlockHash, channelRootBlockHash.length);
+    }
+
+    public long getCreatedAtMs() {
+        return createdAtMs;
+    }
+
+    public void setCreatedAtMs(long createdAtMs) {
+        this.createdAtMs = createdAtMs;
+    }
+}

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/JsonHandlerRegistry.java

@@ -45,6 +45,7 @@ import server.logic.ws_protocol.JSON.handlers.userParams.entyties.Net_UpsertUser
 // --- NEW: connections friends lists ---
 import server.logic.ws_protocol.JSON.handlers.connections.Net_GetFriendsLists_Handler;
 import server.logic.ws_protocol.JSON.handlers.connections.entyties.Net_GetFriendsLists_Request;
+import server.logic.ws_protocol.JSON.handlers.channels.ChannelNamesStateBootstrapper;
 import server.logic.ws_protocol.JSON.handlers.channels.Net_GetChannelMessages_Handler;
 import server.logic.ws_protocol.JSON.handlers.channels.Net_GetMessageThread_Handler;
 import server.logic.ws_protocol.JSON.handlers.channels.Net_ListSubscriptionsFeed_Handler;
@@ -80,6 +81,10 @@ import java.util.Map;
  */
 public final class JsonHandlerRegistry {
 
+    static {
+        ChannelNamesStateBootstrapper.bootstrapOrFailFast();
+    }
+
     private static final Map<String, JsonMessageHandler> HANDLERS = Map.ofEntries(
             Map.entry("AddUser",            new Net_AddUser_Handler()),
             Map.entry("GetUser",            new Net_GetUser_Handler()),

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/blockchain/Net_AddBlock_Handler.java

@@ -19,19 +19,21 @@ import server.logic.ws_protocol.JSON.handlers.blockchain.Net_AddBlock_Handler_ut
 import server.logic.ws_protocol.JSON.handlers.blockchain.Net_AddBlock_Handler_utils.BlockchainWriter;
 import server.logic.ws_protocol.JSON.handlers.blockchain.entyties.Net_AddBlock_Request;
 import server.logic.ws_protocol.JSON.handlers.blockchain.entyties.Net_AddBlock_Response;
+import server.logic.ws_protocol.JSON.handlers.channels.ChannelNamesStateBootstrapper;
 import server.logic.ws_protocol.WireCodes;
+import shine.db.channels.ChannelNameRules;
 import shine.db.dao.BlockchainStateDAO;
 import shine.db.dao.BlocksDAO;
+import shine.db.dao.ChannelNameStateDAO;
 import shine.db.dao.UserParamsDAO;
 import shine.db.entities.BlockchainStateEntry;
 import shine.db.entities.BlockEntry;
+import shine.db.entities.ChannelNameStateEntry;
 import shine.db.entities.UserParamEntry;
 import utils.blockchain.BlockchainNameUtil;
 
 import java.util.Arrays;
 import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
 import java.util.concurrent.locks.ReentrantLock;
 
 /**
@@ -49,8 +51,13 @@ public final class Net_AddBlock_Handler implements JsonMessageHandler {
     private final BlocksDAO blocksDAO = BlocksDAO.getInstance();
     private final BlockchainStateDAO stateDAO = BlockchainStateDAO.getInstance();
     private final UserParamsDAO userParamsDAO = UserParamsDAO.getInstance();
+    private final ChannelNameStateDAO channelNameStateDAO = ChannelNameStateDAO.getInstance();
 
-    private final BlockchainWriter dbWriter = new BlockchainWriter(blocksDAO, stateDAO, userParamsDAO);
+    private final BlockchainWriter dbWriter = new BlockchainWriter(blocksDAO, stateDAO, userParamsDAO, channelNameStateDAO);
+
+    public Net_AddBlock_Handler() {
+        ChannelNamesStateBootstrapper.bootstrapOrFailFast();
+    }
 
     @Override
     public Net_Response handle(Net_Request baseReq, ConnectionContext ctx) {
@@ -114,9 +121,7 @@ public final class Net_AddBlock_Handler implements JsonMessageHandler {
     }
 
     private static String humanMessage(String code) {
-        if (code == null) return "Ошибка добавления блока";
+        if (code == null) return "Ошибка добавления блока";        return switch (code) {
-
-        return switch (code) {
             case "empty_blockchain_name" -> "Пустое имя блокчейна";
             case "bad_blockchain_name" -> "Некорректное имя блокчейна";
             case "db_error" -> "Ошибка базы данных";
@@ -127,6 +132,7 @@ public final class Net_AddBlock_Handler implements JsonMessageHandler {
             case "limit_check_failed" -> "Ошибка проверки лимита размера";
             case "bad_block_format" -> "Некорректный формат блока";
             case "bad_block_body" -> "Некорректное тело блока";
+            case "bad_channel_name" -> "Некорректное название канала";
             case "bad_block_number" -> "Некорректный номер блока";
             case "req_global_mismatch" -> "Номер блока в запросе не совпадает с номером в блоке";
             case "bad_prev_hash" -> "Некорректный prevHash (цепочка не совпадает)";
@@ -136,7 +142,7 @@ public final class Net_AddBlock_Handler implements JsonMessageHandler {
             case "prev_line_block_not_found" -> "Не найден блок prevLineNumber для проверки линии";
             case "bad_prev_line_hash" -> "Некорректный prevLineHash";
             case "db_error_prev_line_check" -> "Ошибка БД при проверке prevLine";
-            case "channel_name_already_exists" -> "Канал с таким именем уже существует";
+            case "channel_name_already_exists" -> "Такое название канала уже занято";
             case "internal_error" -> "Внутренняя ошибка сервера при записи блока";
             default -> "Ошибка: " + code;
         };
@@ -237,9 +243,19 @@ public final class Net_AddBlock_Handler implements JsonMessageHandler {
             return new AddBlockResult(WireCodes.Status.BAD_REQUEST, "bad_block_body", serverLastNum, serverLastHashHex);
         }
 
+        ChannelNameStateEntry channelNameStateEntry = null;
         if (block.body instanceof CreateChannelBody createChannelBody) {
+            final String normalizedName;
+            final String slug;
             try {
-                if (channelNameExists(blockchainName, createChannelBody.channelName)) {
+                normalizedName = ChannelNameRules.requireValidDisplayNameForCreate(createChannelBody.channelName);
+                slug = ChannelNameRules.toCanonicalSlug(normalizedName);
+            } catch (IllegalArgumentException badName) {
+                return new AddBlockResult(WireCodes.Status.BAD_REQUEST, "bad_channel_name", serverLastNum, serverLastHashHex);
+            }
+
+            try {
+                if (channelNameStateDAO.existsBySlug(slug)) {
                     return new AddBlockResult(409, "channel_name_already_exists", serverLastNum, serverLastHashHex);
                 }
             } catch (Exception e) {
@@ -247,6 +263,15 @@ public final class Net_AddBlock_Handler implements JsonMessageHandler {
                         blockchainName, createChannelBody.channelName, e);
                 return new AddBlockResult(WireCodes.Status.INTERNAL_ERROR, "internal_error", serverLastNum, serverLastHashHex);
             }
+
+            channelNameStateEntry = new ChannelNameStateEntry();
+            channelNameStateEntry.setSlug(slug);
+            channelNameStateEntry.setDisplayName(normalizedName);
+            channelNameStateEntry.setOwnerLogin(login);
+            channelNameStateEntry.setOwnerBlockchainName(blockchainName);
+            channelNameStateEntry.setChannelRootBlockNumber(block.blockNumber);
+            channelNameStateEntry.setChannelRootBlockHash(block.getHash32());
+            channelNameStateEntry.setCreatedAtMs(block.timestamp * 1000L);
         }
 
         // 4.2) запрет дырок: blockNumber строго last+1
@@ -390,9 +415,11 @@ public final class Net_AddBlock_Handler implements JsonMessageHandler {
                 );
             }
 
-            dbWriter.appendBlockAndState(blockchainName, block, st, be, upsertedParam);
+            dbWriter.appendBlockAndState(blockchainName, block, st, be, upsertedParam, channelNameStateEntry);
-
         } catch (Exception e) {
+            if (isChannelSlugConflict(e)) {
+                return new AddBlockResult(409, "channel_name_already_exists", serverLastNum, serverLastHashHex);
+            }
             log.error("AddBlock: внутренняя ошибка при записи блока (login={}, blockchainName={}, blockNumber={})",
                     login, blockchainName, block.blockNumber, e);
             return new AddBlockResult(WireCodes.Status.INTERNAL_ERROR, "internal_error", serverLastNum, serverLastHashHex);
@@ -415,28 +442,15 @@ public final class Net_AddBlock_Handler implements JsonMessageHandler {
         return Base64Ws.decode(b64);
     }
 
-    private boolean channelNameExists(String blockchainName, String channelName) throws Exception {
+    private static boolean isChannelSlugConflict(Throwable throwable) {
-        String sql = """
+        Throwable cur = throwable;
-                SELECT block_bytes
+        while (cur != null) {
-                FROM blocks
+            String message = String.valueOf(cur.getMessage());
-                WHERE bch_name = ? AND msg_type = 0 AND msg_sub_type = 1
+            if (message.contains("channel_names_state.slug")
-                """;
+                    || message.contains("uq_channel_names_state_slug")) {
-        try (Connection c = shine.db.SqliteDbController.getInstance().getConnection();
+                return true;
-             PreparedStatement ps = c.prepareStatement(sql)) {
-            ps.setString(1, blockchainName);
-            try (ResultSet rs = ps.executeQuery()) {
-                while (rs.next()) {
-                    byte[] bytes = rs.getBytes("block_bytes");
-                    try {
-                        BchBlockEntry entry = new BchBlockEntry(bytes);
-                        if (entry.body instanceof CreateChannelBody ccb) {
-                            if (ccb.channelName.equalsIgnoreCase(channelName)) return true;
-                        }
-                    } catch (Exception ignored) {
-                        // ignore bad historic rows, uniqueness check is best effort
-                    }
-                }
             }
+            cur = cur.getCause();
         }
         return false;
     }

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/blockchain/Net_AddBlock_Handler_utils/BlockchainWriter.java

@@ -3,9 +3,11 @@ package server.logic.ws_protocol.JSON.handlers.blockchain.Net_AddBlock_Handler_u
 import blockchain.BchBlockEntry;
 import shine.db.dao.BlockchainStateDAO;
 import shine.db.dao.BlocksDAO;
+import shine.db.dao.ChannelNameStateDAO;
 import shine.db.dao.UserParamsDAO;
 import shine.db.entities.BlockchainStateEntry;
 import shine.db.entities.BlockEntry;
+import shine.db.entities.ChannelNameStateEntry;
 import shine.db.entities.UserParamEntry;
 import utils.files.FileStoreUtil;
 
@@ -23,20 +25,26 @@ public final class BlockchainWriter {
 
     private final BlocksDAO blocksDAO;
     private final BlockchainStateDAO stateDAO;
+    private final ChannelNameStateDAO channelNameStateDAO;
     private final UserParamsDAO userParamsDAO;
     private final FileStoreUtil fs = FileStoreUtil.getInstance();
 
-    public BlockchainWriter(BlocksDAO blocksDAO, BlockchainStateDAO stateDAO, UserParamsDAO userParamsDAO) {
+    public BlockchainWriter(BlocksDAO blocksDAO,
+                            BlockchainStateDAO stateDAO,
+                            UserParamsDAO userParamsDAO,
+                            ChannelNameStateDAO channelNameStateDAO) {
         this.blocksDAO = blocksDAO;
         this.stateDAO = stateDAO;
         this.userParamsDAO = userParamsDAO;
+        this.channelNameStateDAO = channelNameStateDAO;
     }
 
     public void appendBlockAndState(String blockchainName,
                                     BchBlockEntry block,
                                     BlockchainStateEntry st,
                                     BlockEntry be,
-                                    UserParamEntry userParamEntry) throws SQLException {
+                                    UserParamEntry userParamEntry,
+                                    ChannelNameStateEntry channelNameStateEntry) throws SQLException {
 
         long nowMs = System.currentTimeMillis();
 
@@ -59,6 +67,10 @@ public final class BlockchainWriter {
                     userParamsDAO.upsertIfNewer(c, userParamEntry);
                 }
 
+                if (channelNameStateEntry != null) {
+                    channelNameStateDAO.insert(c, channelNameStateEntry);
+                }
+
                 c.commit();
             } catch (Exception e) {
                 try { c.rollback(); } catch (Exception ignored) {}

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/channels/ChannelNamesStateBootstrapper.java

@@ -0,0 +1,141 @@
+package server.logic.ws_protocol.JSON.handlers.channels;
+
+import blockchain.BchBlockEntry;
+import blockchain.body.CreateChannelBody;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import shine.db.SqliteDbController;
+import shine.db.channels.ChannelNameRules;
+import shine.db.dao.ChannelNameStateDAO;
+import shine.db.entities.ChannelNameStateEntry;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+public final class ChannelNamesStateBootstrapper {
+    private static final Logger log = LoggerFactory.getLogger(ChannelNamesStateBootstrapper.class);
+    private static final int MSG_TYPE_TECH = 0;
+    private static final int MSG_SUB_TYPE_CREATE_CHANNEL = 1;
+    private static volatile boolean bootstrapped;
+
+    private ChannelNamesStateBootstrapper() {}
+
+    public static void bootstrapOrFailFast() {
+        if (bootstrapped) return;
+        synchronized (ChannelNamesStateBootstrapper.class) {
+            if (bootstrapped) return;
+            rebuildFromBlocksOrThrow();
+            bootstrapped = true;
+        }
+    }
+
+    private static void rebuildFromBlocksOrThrow() {
+        ChannelNameStateDAO dao = ChannelNameStateDAO.getInstance();
+        List<ChannelNameStateEntry> entries = new ArrayList<>();
+        Map<String, String> slugToIdentity = new LinkedHashMap<>();
+        List<String> conflicts = new ArrayList<>();
+        List<String> skipped = new ArrayList<>();
+
+        String sql = """
+                SELECT login, bch_name, block_number, block_hash, block_bytes
+                FROM blocks
+                WHERE msg_type = ? AND msg_sub_type = ?
+                ORDER BY bch_name, block_number
+                """;
+
+        try (Connection c = SqliteDbController.getInstance().getConnection()) {
+            c.setAutoCommit(false);
+            try {
+                try (PreparedStatement ps = c.prepareStatement(sql)) {
+                    ps.setInt(1, MSG_TYPE_TECH);
+                    ps.setInt(2, MSG_SUB_TYPE_CREATE_CHANNEL);
+
+                    try (ResultSet rs = ps.executeQuery()) {
+                        while (rs.next()) {
+                            String ownerLogin = rs.getString("login");
+                            String ownerBch = rs.getString("bch_name");
+                            int blockNumber = rs.getInt("block_number");
+                            byte[] blockHash = rs.getBytes("block_hash");
+                            byte[] blockBytes = rs.getBytes("block_bytes");
+
+                            final BchBlockEntry parsed;
+                            final CreateChannelBody createChannelBody;
+                            try {
+                                parsed = new BchBlockEntry(blockBytes);
+                                if (!(parsed.body instanceof CreateChannelBody ccb)) continue;
+                                createChannelBody = ccb;
+                            } catch (Exception parseError) {
+                                skipped.add(ownerBch + "#" + blockNumber + " (parse_error)");
+                                continue;
+                            }
+
+                            final String displayName;
+                            final String slug;
+                            try {
+                                displayName = ChannelNameRules.normalizeDisplayName(createChannelBody.channelName);
+                                slug = ChannelNameRules.toCanonicalSlug(displayName);
+                            } catch (Exception badName) {
+                                skipped.add(ownerBch + "#" + blockNumber + " (invalid_name)");
+                                continue;
+                            }
+
+                            String identity = ownerBch + "#" + blockNumber;
+                            String existing = slugToIdentity.putIfAbsent(slug, identity);
+                            if (existing != null && !existing.equals(identity)) {
+                                conflicts.add("slug=\"" + slug + "\" conflicts: " + existing + " vs " + identity);
+                                continue;
+                            }
+
+                            ChannelNameStateEntry entry = new ChannelNameStateEntry();
+                            entry.setSlug(slug);
+                            entry.setDisplayName(displayName);
+                            entry.setOwnerLogin(ownerLogin);
+                            entry.setOwnerBlockchainName(ownerBch);
+                            entry.setChannelRootBlockNumber(blockNumber);
+                            entry.setChannelRootBlockHash(blockHash);
+                            entry.setCreatedAtMs(parsed.timestamp * 1000L);
+                            entries.add(entry);
+                        }
+                    }
+                }
+
+                dao.clearAll(c);
+                dao.insertAll(c, entries);
+                c.commit();
+                log.info("channel_names_state bootstrapped: {}", entries.size());
+                if (!conflicts.isEmpty()) {
+                    log.warn("channel_names_state bootstrap detected {} slug conflicts (kept first occurrence)", conflicts.size());
+                    int preview = Math.min(conflicts.size(), 10);
+                    for (int i = 0; i < preview; i++) {
+                        log.warn("channel_names_state conflict: {}", conflicts.get(i));
+                    }
+                }
+                if (!skipped.isEmpty()) {
+                    log.warn("channel_names_state bootstrap skipped {} legacy entries", skipped.size());
+                    int preview = Math.min(skipped.size(), 10);
+                    for (int i = 0; i < preview; i++) {
+                        log.warn("channel_names_state skipped: {}", skipped.get(i));
+                    }
+                }
+            } catch (Exception e) {
+                try {
+                    c.rollback();
+                } catch (Exception ignored) {
+                }
+                throw e;
+            } finally {
+                try {
+                    c.setAutoCommit(true);
+                } catch (Exception ignored) {
+                }
+            }
+        } catch (Exception e) {
+            throw new RuntimeException("Failed to bootstrap channel_names_state", e);
+        }
+    }
+}

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/channels/ChannelsReadSupport.java

@@ -4,6 +4,8 @@ import blockchain.BchBlockEntry;
 import blockchain.body.BodyRecord;
 import blockchain.body.CreateChannelBody;
 import blockchain.body.TextBody;
+import blockchain.body.TextLineBody;
+import blockchain.body.TextReplyBody;
 import shine.db.MsgSubType;
 
 import java.sql.Connection;
@@ -15,6 +17,7 @@ import java.util.List;
 
 final class ChannelsReadSupport {
     static final int MSG_TYPE_TEXT = 1;
+    static final int MSG_TYPE_REACTION = 2;
     static final int MSG_TYPE_TECH = 0;
 
     private ChannelsReadSupport() {}
@@ -122,7 +125,11 @@ final class ChannelsReadSupport {
             BchBlockEntry e = new BchBlockEntry(blockBytes);
             TextInfo ti = new TextInfo();
             ti.createdAtMs = e.timestamp * 1000L;
-            if (e.body instanceof TextBody tb) {
+            if (e.body instanceof TextLineBody tlb) {
+                ti.text = tlb.message;
+            } else if (e.body instanceof TextReplyBody trb) {
+                ti.text = trb.message;
+            } else if (e.body instanceof TextBody tb) {
                 ti.text = tb.message;
             }
             return ti;
@@ -205,6 +212,34 @@ final class ChannelsReadSupport {
         }
     }
 
+    static boolean isLikedByLogin(Connection c, String login, String toBch, int toBlockNumber, byte[] toBlockHash) throws SQLException {
+        if (login == null || login.isBlank() || toBch == null || toBch.isBlank() || toBlockHash == null || toBlockHash.length != 32) {
+            return false;
+        }
+        String sql = """
+            SELECT msg_sub_type
+            FROM blocks
+            WHERE login = ? COLLATE NOCASE
+              AND msg_type = ?
+              AND to_bch_name = ?
+              AND to_block_number = ?
+              AND to_block_hash = ?
+            ORDER BY block_number DESC
+            LIMIT 1
+            """;
+        try (PreparedStatement ps = c.prepareStatement(sql)) {
+            ps.setString(1, login);
+            ps.setInt(2, MSG_TYPE_REACTION);
+            ps.setString(3, toBch);
+            ps.setInt(4, toBlockNumber);
+            ps.setBytes(5, toBlockHash);
+            try (ResultSet rs = ps.executeQuery()) {
+                if (!rs.next()) return false;
+                return rs.getInt("msg_sub_type") == MsgSubType.REACTION_LIKE;
+            }
+        }
+    }
+
     static byte[] hexToBytes(String s) {
         if (s == null) return null;
         String x = s.trim();

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/channels/Net_GetChannelMessages_Handler.java

@@ -38,6 +38,10 @@ public class Net_GetChannelMessages_Handler implements JsonMessageHandler {
         boolean asc = req.getSort() == null || !"desc".equalsIgnoreCase(req.getSort());
 
         try (Connection c = SqliteDbController.getInstance().getConnection()) {
+            String viewerLogin = ctx != null ? ctx.getLogin() : null;
+            if (viewerLogin == null || viewerLogin.isBlank()) {
+                viewerLogin = ChannelsReadSupport.canonicalLogin(c, req.getLogin());
+            }
             String ownerBch = req.getChannel().getOwnerBlockchainName();
             int lineCode = req.getChannel().getChannelRootBlockNumber();
 
@@ -102,6 +106,7 @@ public class Net_GetChannelMessages_Handler implements JsonMessageHandler {
                 int[] stats = ChannelsReadSupport.loadStats(c, ownerBch, post.blockNumber, post.blockHash);
                 item.setLikesCount(stats[0]);
                 item.setRepliesCount(stats[1]);
+                item.setLikedByMe(ChannelsReadSupport.isLikedByLogin(c, viewerLogin, post.bchName, post.blockNumber, post.blockHash));
 
                 items.add(item);
             }

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/channels/Net_GetMessageThread_Handler.java

@@ -27,7 +27,7 @@ public class Net_GetMessageThread_Handler implements JsonMessageHandler {
     public Net_Response handle(Net_Request baseRequest, ConnectionContext ctx) {
         Net_GetMessageThread_Request req = (Net_GetMessageThread_Request) baseRequest;
         if (req.getMessage() == null || req.getMessage().getBlockchainName() == null || req.getMessage().getBlockNumber() == null) {
-            return NetExceptionResponseFactory.error(req, WireCodes.Status.BAD_REQUEST, "bad_fields", "Некорректные поля message");
+            return NetExceptionResponseFactory.error(req, WireCodes.Status.BAD_REQUEST, "bad_fields", "Некорректные поля message");
         }
 
         int depthUp = req.getDepthUp() == null ? 20 : Math.max(0, req.getDepthUp());
@@ -35,9 +35,13 @@ public class Net_GetMessageThread_Handler implements JsonMessageHandler {
         int childLimit = req.getLimitChildrenPerNode() == null ? 50 : Math.max(1, req.getLimitChildrenPerNode());
 
         try (Connection c = SqliteDbController.getInstance().getConnection()) {
+            String viewerLogin = ctx != null ? ctx.getLogin() : null;
+            if (viewerLogin == null || viewerLogin.isBlank()) {
+                viewerLogin = ChannelsReadSupport.canonicalLogin(c, req.getLogin());
+            }
             PostRow focusRow = findByNumber(c, req.getMessage().getBlockchainName(), req.getMessage().getBlockNumber());
             if (focusRow == null) {
-                return NetExceptionResponseFactory.error(req, 404, "message_not_found", "Сообщение не найдено");
+                return NetExceptionResponseFactory.error(req, 404, "message_not_found", "Сообщение не найдено");
             }
 
             Net_GetMessageThread_Response resp = new Net_GetMessageThread_Response();
@@ -45,7 +49,7 @@ public class Net_GetMessageThread_Handler implements JsonMessageHandler {
             resp.setRequestId(req.getRequestId());
             resp.setStatus(WireCodes.Status.OK);
 
-            resp.setFocus(toNode(c, focusRow));
+            resp.setFocus(toNode(c, focusRow, viewerLogin));
 
             List<Net_GetMessageThread_Response.MessageNode> ancestors = new ArrayList<>();
             PostRow cur = focusRow;
@@ -53,27 +57,27 @@ public class Net_GetMessageThread_Handler implements JsonMessageHandler {
                 if (cur.toBlockNumber == null || cur.toBchName == null) break;
                 PostRow parent = findByNumber(c, cur.toBchName, cur.toBlockNumber);
                 if (parent == null) break;
-                ancestors.add(0, toNode(c, parent));
+                ancestors.add(0, toNode(c, parent, viewerLogin));
                 cur = parent;
             }
             resp.setAncestors(ancestors);
 
-            resp.setDescendants(loadChildren(c, focusRow, depthDown, childLimit));
+            resp.setDescendants(loadChildren(c, focusRow, depthDown, childLimit, viewerLogin));
             return resp;
         } catch (Exception e) {
             log.error("GetMessageThread failed", e);
-            return NetExceptionResponseFactory.error(req, WireCodes.Status.INTERNAL_ERROR, "internal_error", "Внутренняя ошибка сервера");
+            return NetExceptionResponseFactory.error(req, WireCodes.Status.INTERNAL_ERROR, "internal_error", "Внутренняя ошибка сервера");
         }
     }
 
-    private List<Net_GetMessageThread_Response.MessageNodeTree> loadChildren(Connection c, PostRow parent, int depthDown, int childLimit) throws Exception {
+    private List<Net_GetMessageThread_Response.MessageNodeTree> loadChildren(Connection c, PostRow parent, int depthDown, int childLimit, String viewerLogin) throws Exception {
         if (depthDown <= 0) return List.of();
         List<PostRow> replies = findReplies(c, parent.bchName, parent.blockNumber, parent.blockHash, childLimit);
         List<Net_GetMessageThread_Response.MessageNodeTree> out = new ArrayList<>();
         for (PostRow row : replies) {
             Net_GetMessageThread_Response.MessageNodeTree t = new Net_GetMessageThread_Response.MessageNodeTree();
-            t.setNode(toNode(c, row));
+            t.setNode(toNode(c, row, viewerLogin));
-            t.setChildren(loadChildren(c, row, depthDown - 1, childLimit));
+            t.setChildren(loadChildren(c, row, depthDown - 1, childLimit, viewerLogin));
             out.add(t);
         }
         return out;
@@ -133,7 +137,7 @@ public class Net_GetMessageThread_Handler implements JsonMessageHandler {
         return row;
     }
 
-    private Net_GetMessageThread_Response.MessageNode toNode(Connection c, PostRow row) throws Exception {
+    private Net_GetMessageThread_Response.MessageNode toNode(Connection c, PostRow row, String viewerLogin) throws Exception {
         Net_GetMessageThread_Response.MessageNode node = new Net_GetMessageThread_Response.MessageNode();
         Net_GetChannelMessages_Response.BlockRef ref = new Net_GetChannelMessages_Response.BlockRef();
         ref.setBlockNumber(row.blockNumber);
@@ -173,6 +177,7 @@ public class Net_GetMessageThread_Handler implements JsonMessageHandler {
         int[] stats = ChannelsReadSupport.loadStats(c, row.bchName, row.blockNumber, row.blockHash);
         node.setLikesCount(stats[0]);
         node.setRepliesCount(stats[1]);
+        node.setLikedByMe(ChannelsReadSupport.isLikedByLogin(c, viewerLogin, row.bchName, row.blockNumber, row.blockHash));
 
         if (row.lineCode != null && row.lineCode >= 0) {
             Net_GetMessageThread_Response.ChannelInfo ci = new Net_GetMessageThread_Response.ChannelInfo();
@@ -222,3 +227,4 @@ public class Net_GetMessageThread_Handler implements JsonMessageHandler {
         int msgSubType;
     }
 }
+

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/channels/entyties/Net_GetChannelMessages_Request.java

@@ -3,10 +3,14 @@ package server.logic.ws_protocol.JSON.handlers.channels.entyties;
 import server.logic.ws_protocol.JSON.entyties.Net_Request;
 
 public class Net_GetChannelMessages_Request extends Net_Request {
+    private String login;
     private ChannelSelector channel;
     private Integer limit;
     private String sort;
 
+    public String getLogin() { return login; }
+    public void setLogin(String login) { this.login = login; }
+
     public ChannelSelector getChannel() { return channel; }
     public void setChannel(ChannelSelector channel) { this.channel = channel; }
 

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/channels/entyties/Net_GetChannelMessages_Response.java

@@ -41,6 +41,7 @@ public class Net_GetChannelMessages_Response extends Net_Response {
         private long createdAtMs;
         private String text;
         private int likesCount;
+        private boolean likedByMe;
         private int repliesCount;
         private int versionsTotal;
         private List<VersionItem> versions = new ArrayList<>();
@@ -63,6 +64,9 @@ public class Net_GetChannelMessages_Response extends Net_Response {
         public int getLikesCount() { return likesCount; }
         public void setLikesCount(int likesCount) { this.likesCount = likesCount; }
 
+        public boolean isLikedByMe() { return likedByMe; }
+        public void setLikedByMe(boolean likedByMe) { this.likedByMe = likedByMe; }
+
         public int getRepliesCount() { return repliesCount; }
         public void setRepliesCount(int repliesCount) { this.repliesCount = repliesCount; }
 

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/channels/entyties/Net_GetMessageThread_Request.java

@@ -3,11 +3,15 @@ package server.logic.ws_protocol.JSON.handlers.channels.entyties;
 import server.logic.ws_protocol.JSON.entyties.Net_Request;
 
 public class Net_GetMessageThread_Request extends Net_Request {
+    private String login;
     private MessageSelector message;
     private Integer depthUp;
     private Integer depthDown;
     private Integer limitChildrenPerNode;
 
+    public String getLogin() { return login; }
+    public void setLogin(String login) { this.login = login; }
+
     public MessageSelector getMessage() { return message; }
     public void setMessage(MessageSelector message) { this.message = message; }
 

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/handlers/connections/Net_AddCloseFriend_Handler.java

@@ -9,7 +9,6 @@ import server.logic.ws_protocol.JSON.handlers.connections.entyties.Net_AddCloseF
 import server.logic.ws_protocol.JSON.utils.NetExceptionResponseFactory;
 import server.logic.ws_protocol.WireCodes;
 import shine.db.MsgSubType;
-import shine.db.dao.ConnectionsStateDAO;
 
 import java.sql.Connection;
 import java.sql.PreparedStatement;
@@ -42,15 +41,10 @@ public class Net_AddCloseFriend_Handler implements JsonMessageHandler {
                 return NetExceptionResponseFactory.error(req, 404, "BLOCKCHAIN_NOT_FOUND", "У пользователя нет blockchain");
             }
 
-            ConnectionsStateDAO.getInstance().upsertRelation(
+            // Idempotent insert for close-friend relation.
-                    c,
+            // Using INSERT OR IGNORE avoids ON CONFLICT(column list) mismatches
-                    from,
+            // across DB instances with different UNIQUE schemas.
-                    MsgSubType.CONNECTION_FRIEND,
+            insertCloseFriendIgnoreDuplicate(c, from, canonicalTo, targetBch);
-                    canonicalTo,
-                    targetBch,
-                    0,
-                    new byte[32]
-            );
 
             Net_AddCloseFriend_Response resp = new Net_AddCloseFriend_Response();
             resp.setOp(req.getOp());
@@ -82,4 +76,26 @@ public class Net_AddCloseFriend_Handler implements JsonMessageHandler {
             }
         }
     }
+
+    private void insertCloseFriendIgnoreDuplicate(Connection c,
+                                                  String login,
+                                                  String toLogin,
+                                                  String toBchName) throws Exception {
+        String sql = """
+            INSERT OR IGNORE INTO connections_state (
+                login, rel_type, to_login, to_bch_name, to_block_number, to_block_hash
+            )
+            VALUES (?, ?, ?, ?, ?, ?)
+            """;
+
+        try (PreparedStatement ps = c.prepareStatement(sql)) {
+            ps.setString(1, login);
+            ps.setInt(2, MsgSubType.CONNECTION_FRIEND);
+            ps.setString(3, toLogin);
+            ps.setString(4, toBchName);
+            ps.setInt(5, 0);
+            ps.setBytes(6, new byte[32]);
+            ps.executeUpdate();
+        }
+    }
 }

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/utils/AuthKeyUtils.java

@@ -23,9 +23,17 @@ public final class AuthKeyUtils {
     public static byte[] parseEd25519PublicKey(String key, String fieldName) {
         String normalized = normalize(key, fieldName);
 
+        // Legacy format is plain BASE64(32 bytes) and may contain '/' characters.
+        // Try legacy decode first to avoid misinterpreting base64 payload as algorithm prefix.
+        try {
+            return Base64Ws.decodeLen(normalized, 32, fieldName);
+        } catch (IllegalArgumentException ignored) {
+            // continue with explicit algorithm/key format
+        }
+
         int slash = normalized.indexOf('/');
         if (slash < 0) {
-            return Base64Ws.decodeLen(normalized, 32, fieldName);
+            throw new IllegalArgumentException(fieldName + " has bad base64/key format");
         }
 
         String algorithm = normalized.substring(0, slash).trim();