diff --git a/apps/api/src/routes/settings.test.ts b/apps/api/src/routes/settings.test.ts
index 0492adf..d1e1a8c 100644
--- a/apps/api/src/routes/settings.test.ts
+++ b/apps/api/src/routes/settings.test.ts
@@ -10,8 +10,9 @@ describe('settings telegram test', () => {
   beforeEach(async () => {
     resetTestDb()
     settingsRepository.upsert('settings-main', {
-      telegramBotToken: 'token',
+      telegramBotToken: 'db-token',
       telegramChatId: '123',
+      telegramMessageThreadId: '99',
     })
     app = await buildApp()
   })
@@ -22,7 +23,7 @@ describe('settings telegram test', () => {
     closeDb()
   })
 
-  it('returns telegram API error', async () => {
+  it('returns telegram API error with hint', async () => {
     vi.stubGlobal(
       'fetch',
       vi.fn(async () =>
@@ -34,5 +35,49 @@ describe('settings telegram test', () => {
     const body = res.json() as { ok: boolean; error?: string }
     expect(body.ok).toBe(false)
     expect(body.error).toContain('chat not found')
+    expect(body.error).toContain('Chat ID')
+  })
+
+  it('uses body overrides and falls back to db token', async () => {
+    const fetchMock = vi.fn(async () => Response.json({ ok: true }))
+    vi.stubGlobal('fetch', fetchMock)
+
+    const res = await app.inject({
+      method: 'POST',
+      url: '/api/settings/telegram/test',
+      payload: {
+        telegramChatId: '-100999',
+        telegramMessageThreadId: '42',
+      },
+    })
+    expect(res.statusCode).toBe(200)
+    const body = res.json() as { ok: boolean }
+    expect(body.ok).toBe(true)
+
+    const call = fetchMock.mock.calls[0] as [string, RequestInit] | undefined
+    expect(call).toBeDefined()
+    const sent = JSON.parse(String(call![1].body)) as {
+      chat_id: string
+      message_thread_id: number
+    }
+    expect(sent.chat_id).toBe('-100999')
+    expect(sent.message_thread_id).toBe(42)
+  })
+
+  it('uses body token when provided', async () => {
+    const fetchMock = vi.fn(async () => Response.json({ ok: true }))
+    vi.stubGlobal('fetch', fetchMock)
+
+    await app.inject({
+      method: 'POST',
+      url: '/api/settings/telegram/test',
+      payload: {
+        telegramBotToken: 'override-token',
+        telegramChatId: '-1001',
+      },
+    })
+
+    const url = String((fetchMock.mock.calls[0] as [string])[0])
+    expect(url).toContain('botoverride-token/')
   })
 })
diff --git a/apps/api/src/routes/settings.ts b/apps/api/src/routes/settings.ts
index 3f4c210..e0f6359 100644
--- a/apps/api/src/routes/settings.ts
+++ b/apps/api/src/routes/settings.ts
@@ -1,6 +1,6 @@
 import type { FastifyPluginAsync } from 'fastify'
 import { settingsRepository } from '@cfdm/db/repositories/settings'
-import { settingsSchema } from '@cfdm/shared/contracts/settings'
+import { settingsSchema, telegramTestBodySchema } from '@cfdm/shared/contracts/settings'
 
 import { restartScheduler } from '../services/scheduler.js'
 import { sendTelegramMessage } from '../services/telegram.js'
@@ -30,16 +30,26 @@ export const settingsRoutes: FastifyPluginAsync = async (app) => {
     return result
   })
 
-  app.post('/api/settings/telegram/test', async () => {
+  app.post('/api/settings/telegram/test', async (req) => {
+    const parsed = telegramTestBodySchema.safeParse(req.body ?? {})
+    const body = parsed.success ? parsed.data : {}
     const settings = settingsRepository.getRow('settings-main')
-    if (!settings?.telegramBotToken?.trim() || !settings.telegramChatId?.trim()) {
+
+    const token = body.telegramBotToken?.trim() || settings?.telegramBotToken?.trim() || ''
+    const chatId = body.telegramChatId?.trim() || settings?.telegramChatId?.trim() || ''
+    const messageThreadId =
+      body.telegramMessageThreadId !== undefined
+        ? body.telegramMessageThreadId
+        : settings?.telegramMessageThreadId
+
+    if (!token || !chatId) {
       return { ok: false, error: 'Укажите токен бота и chat ID в настройках' }
     }
     const result = await sendTelegramMessage(
-      settings.telegramBotToken,
-      settings.telegramChatId,
+      token,
+      chatId,
       '✅ VPS Tracker: тестовое сообщение',
-      settings.telegramMessageThreadId,
+      messageThreadId,
     )
     return result.ok ? { ok: true } : { ok: false, error: result.error ?? 'Ошибка Telegram API' }
   })
diff --git a/apps/api/src/services/telegram.test.ts b/apps/api/src/services/telegram.test.ts
new file mode 100644
index 0000000..1a1587f
--- /dev/null
+++ b/apps/api/src/services/telegram.test.ts
@@ -0,0 +1,38 @@
+import { describe, expect, it } from 'vitest'
+import { formatTelegramApiError, telegramErrorHint } from './telegram.js'
+
+describe('telegramErrorHint', () => {
+  it('maps thread not found', () => {
+    expect(telegramErrorHint('Bad Request: message thread not found')).toContain('Thread ID')
+  })
+
+  it('maps chat not found', () => {
+    expect(telegramErrorHint('Bad Request: chat not found')).toContain('Chat ID')
+  })
+
+  it('returns null for unknown errors', () => {
+    expect(telegramErrorHint('Something else')).toBeNull()
+  })
+})
+
+describe('formatTelegramApiError', () => {
+  it('includes hint for known telegram description', () => {
+    const msg = formatTelegramApiError(
+      '-1001',
+      { status: 400, statusText: 'Bad Request' },
+      { ok: false, description: 'Bad Request: message thread not found' },
+    )
+    expect(msg).toContain('message thread not found')
+    expect(msg).toContain('Thread ID')
+  })
+
+  it('falls back to raw body when JSON has no description', () => {
+    const msg = formatTelegramApiError(
+      '-1001',
+      { status: 400, statusText: 'Bad Request' },
+      {},
+      'invalid payload',
+    )
+    expect(msg).toBe('-1001: invalid payload')
+  })
+})
diff --git a/apps/api/src/services/telegram.ts b/apps/api/src/services/telegram.ts
index da04edb..7230f15 100644
--- a/apps/api/src/services/telegram.ts
+++ b/apps/api/src/services/telegram.ts
@@ -7,6 +7,49 @@ export interface TelegramSendResult {
   error?: string
 }
 
+interface TelegramApiResponse {
+  ok?: boolean
+  description?: string
+  error_code?: number
+}
+
+/** Маппинг частых ошибок Telegram API на подсказки (для тестов и UI). */
+export function telegramErrorHint(description: string): string | null {
+  const d = description.toLowerCase()
+  if (d.includes('message thread not found')) {
+    return 'Проверьте Thread ID и что в группе включены топики'
+  }
+  if (d.includes('chat not found')) {
+    return 'Бот не добавлен в чат или неверный Chat ID'
+  }
+  if (d.includes('not enough rights')) {
+    return 'Дайте боту право отправлять сообщения (администратор в группе)'
+  }
+  if (d.includes('unauthorized')) {
+    return 'Неверный токен бота'
+  }
+  if (d.includes('bot was blocked')) {
+    return 'Пользователь заблокировал бота'
+  }
+  return null
+}
+
+export function formatTelegramApiError(
+  chatId: string,
+  res: Pick<Response, 'status' | 'statusText'>,
+  data: TelegramApiResponse,
+  rawBody?: string,
+): string {
+  const description = data.description?.trim()
+  if (description) {
+    const hint = telegramErrorHint(description)
+    return hint ? `${chatId}: ${description} — ${hint}` : `${chatId}: ${description}`
+  }
+  const snippet = rawBody?.trim().slice(0, 200)
+  const fallback = snippet || res.statusText || `HTTP ${res.status}`
+  return `${chatId}: ${fallback}`
+}
+
 export async function sendTelegramMessage(
   token: string,
   chatIds: string | string[],
@@ -43,12 +86,18 @@ export async function sendTelegramMessage(
         headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify({ ...payload, chat_id: chatId }),
       })
-      const data = (await res.json().catch(() => ({}))) as { ok?: boolean; description?: string }
+      const rawBody = await res.text()
+      let data: TelegramApiResponse = {}
+      try {
+        data = JSON.parse(rawBody) as TelegramApiResponse
+      } catch {
+        /* non-JSON body */
+      }
       if (data.ok) {
         anyOk = true
       } else {
-        const err = data.description || res.statusText || 'Unknown error'
-        errors.push(`${chatId}: ${err}`)
+        const err = formatTelegramApiError(chatId, res, data, rawBody)
+        errors.push(err)
         console.warn(`Telegram sendMessage failed for chat ${chatId}:`, err)
       }
     } catch (err) {
diff --git a/apps/web/src/components/global-search.tsx b/apps/web/src/components/global-search.tsx
index 84b1d43..5a22a07 100644
--- a/apps/web/src/components/global-search.tsx
+++ b/apps/web/src/components/global-search.tsx
@@ -43,61 +43,85 @@ export function GlobalSearch({ open, onOpenChange }: GlobalSearchProps) {
   const projectItems = useMemo(() => snapshot?.serverProjects ?? [], [snapshot])
 
   return (
-    <CommandDialog open={open} onOpenChange={onOpenChange} title="Поиск" description="VPS, аккаунты, проекты и навигация">
-      <Command>
+    <CommandDialog
+      open={open}
+      onOpenChange={onOpenChange}
+      title="Поиск"
+      description="VPS, аккаунты, проекты и навигация"
+      className="sm:max-w-lg"
+    >
+      <Command className="**:data-[selected=true]:bg-muted **:data-selected:bg-transparent">
         <CommandInput placeholder="IP, DNS, проект, аккаунт…" />
-        <CommandList>
+        <CommandList className="max-h-96">
           <CommandEmpty>Ничего не найдено</CommandEmpty>
           <CommandGroup heading="Навигация">
-          <CommandItem onSelect={() => go('/dashboard')}>
-            <LayoutDashboardIcon />
-            Дашборд
-          </CommandItem>
-          <CommandItem onSelect={() => go('/vps')}>
-            <ServerIcon />
-            Все VPS
-          </CommandItem>
+            <CommandItem onSelect={() => go('/dashboard')}>
+              <LayoutDashboardIcon />
+              <span>Дашборд</span>
+            </CommandItem>
+            <CommandItem onSelect={() => go('/vps')}>
+              <ServerIcon />
+              <span>Все VPS</span>
+            </CommandItem>
           </CommandGroup>
           <CommandSeparator />
           <CommandGroup heading="VPS">
-          {vpsItems.slice(0, 50).map((v) => (
-            <CommandItem key={v.id} value={`${v.ip} ${v.dns} ${v.project}`} onSelect={() => go('/vps/$vpsId', { vpsId: v.id })}>
-              <ServerIcon />
-              <span>{v.ip || v.dns || v.id}</span>
-              {v.project ? <span className="text-muted-foreground text-xs">· {v.project}</span> : null}
-            </CommandItem>
-          ))}
-          </CommandGroup>
-          <CommandGroup heading="Аккаунты">
-          {accountItems.map((a) => (
-            <CommandItem
-              key={a.id}
-              value={`${a.name} ${providerById.get(a.providerId)?.name ?? ''}`}
-              onSelect={() => go('/accounts')}
-            >
-              <WalletIcon />
-              {a.name}
-            </CommandItem>
-          ))}
-          </CommandGroup>
-          <CommandGroup heading="Проекты">
-          {projectItems.map((p) => {
-            const row = p as { id: string; name: string }
-            return (
-              <CommandItem key={row.id} value={row.name} onSelect={() => go('/vps', { project: row.name })}>
-                <FolderKanbanIcon />
-                {row.name}
+            {vpsItems.slice(0, 50).map((v) => (
+              <CommandItem
+                key={v.id}
+                value={`${v.ip} ${v.dns} ${v.project}`}
+                onSelect={() => go('/vps/$vpsId', { vpsId: v.id })}
+              >
+                <ServerIcon />
+                <span className="truncate">{v.ip || v.dns || v.id}</span>
+                {v.project ? (
+                  <span className="text-muted-foreground text-xs">{v.project}</span>
+                ) : null}
               </CommandItem>
-            )
-          })}
+            ))}
           </CommandGroup>
+          <CommandSeparator />
+          <CommandGroup heading="Аккаунты">
+            {accountItems.map((a) => (
+              <CommandItem
+                key={a.id}
+                value={`${a.name} ${providerById.get(a.providerId)?.name ?? ''}`}
+                onSelect={() => go('/accounts')}
+              >
+                <WalletIcon />
+                <span className="truncate">{a.name}</span>
+                {providerById.get(a.providerId)?.name ? (
+                  <span className="text-muted-foreground text-xs">
+                    {providerById.get(a.providerId)?.name}
+                  </span>
+                ) : null}
+              </CommandItem>
+            ))}
+          </CommandGroup>
+          <CommandSeparator />
+          <CommandGroup heading="Проекты">
+            {projectItems.map((p) => {
+              const row = p as { id: string; name: string }
+              return (
+                <CommandItem
+                  key={row.id}
+                  value={row.name}
+                  onSelect={() => go('/vps', { project: row.name })}
+                >
+                  <FolderKanbanIcon />
+                  <span className="truncate">{row.name}</span>
+                </CommandItem>
+              )
+            })}
+          </CommandGroup>
+          <CommandSeparator />
           <CommandGroup heading="Хостеры">
-          {(snapshot?.providers ?? []).map((p) => (
-            <CommandItem key={p.id} value={p.name} onSelect={() => go('/providers')}>
-              <Building2Icon />
-              {p.name}
-            </CommandItem>
-          ))}
+            {(snapshot?.providers ?? []).map((p) => (
+              <CommandItem key={p.id} value={p.name} onSelect={() => go('/providers')}>
+                <Building2Icon />
+                <span className="truncate">{p.name}</span>
+              </CommandItem>
+            ))}
           </CommandGroup>
         </CommandList>
       </Command>
diff --git a/apps/web/src/lib/api-client.ts b/apps/web/src/lib/api-client.ts
index 48d421e..b1cc500 100644
--- a/apps/web/src/lib/api-client.ts
+++ b/apps/web/src/lib/api-client.ts
@@ -108,8 +108,15 @@ export const api = {
     }),
 
   fetchSyncStatus: () => fetchApi('/api/sync/status'),
-  sendTelegramTest: () =>
-    fetchApi<{ ok: boolean; error?: string }>('/api/settings/telegram/test', { method: 'POST' }),
+  sendTelegramTest: (body?: {
+    telegramBotToken?: string
+    telegramChatId?: string
+    telegramMessageThreadId?: string
+  }) =>
+    fetchApi<{ ok: boolean; error?: string }>('/api/settings/telegram/test', {
+      method: 'POST',
+      body: JSON.stringify(body ?? {}),
+    }),
 
   sendWebhookTest: () =>
     fetchApi<{ ok: boolean; error?: string }>('/api/settings/webhook/test', { method: 'POST' }),
diff --git a/apps/web/src/routes/_auth/settings.tsx b/apps/web/src/routes/_auth/settings.tsx
index 5c32556..5c13e1f 100644
--- a/apps/web/src/routes/_auth/settings.tsx
+++ b/apps/web/src/routes/_auth/settings.tsx
@@ -42,7 +42,7 @@ function settingsToFormValues(s: Settings): SettingsFormValues {
     syncIntervalMinutes: s.syncIntervalMinutes ?? 60,
     syncTariffsIntervalMinutes: s.syncTariffsIntervalMinutes ?? 1440,
     telegramChatId: s.telegramChatId ?? '',
-    telegramBotToken: s.telegramBotToken ?? '',
+    telegramBotToken: '',
     notifyPaymentExpiryEnabled: s.notifyPaymentExpiryEnabled !== false,
     notifyNewTariffsEnabled: s.notifyNewTariffsEnabled !== false,
     notifyLowBalanceEnabled: s.notifyLowBalanceEnabled !== false,
@@ -57,6 +57,26 @@ function settingsToFormValues(s: Settings): SettingsFormValues {
   }
 }
 
+function buildSettingsSavePayload(r: SettingsFormValues): SettingsFormValues {
+  const { telegramBotToken, ...rest } = r
+  const token = telegramBotToken?.trim() ?? ''
+  return token ? { ...rest, telegramBotToken: token } : (rest as SettingsFormValues)
+}
+
+function buildTelegramTestPayload(values: SettingsFormValues) {
+  const token = values.telegramBotToken?.trim() ?? ''
+  const payload: {
+    telegramChatId?: string
+    telegramMessageThreadId?: string
+    telegramBotToken?: string
+  } = {
+    telegramChatId: values.telegramChatId?.trim() || undefined,
+    telegramMessageThreadId: values.telegramMessageThreadId ?? '',
+  }
+  if (token) payload.telegramBotToken = token
+  return payload
+}
+
 function BoolSelect({
   id,
   label,
@@ -96,7 +116,7 @@ function SettingsPage() {
 
   const upsertMut = useMutation({
     mutationFn: (patch: SettingsFormValues) => {
-      const payload = { ...patch }
+      const payload = buildSettingsSavePayload(patch)
       if (current?.id) return api.update<Settings>('settings', current.id, payload)
       return api.create<Settings>('settings', {
         id: 'settings-main',
@@ -114,15 +134,15 @@ function SettingsPage() {
   })
 
   const telegramTestMut = useMutation({
-    mutationFn: () => api.sendTelegramTest(),
+    mutationFn: () => api.sendTelegramTest(buildTelegramTestPayload(form.getValues())),
     onSuccess: (data) => {
       if (!data.ok) {
-        toast.error(data.error ?? 'Ошибка Telegram')
+        toast.error(data.error ?? 'Ошибка Telegram', { duration: 10_000 })
         return
       }
       toast.success('Тестовое сообщение отправлено')
     },
-    onError: (e: unknown) => toast.error(e instanceof ApiError ? e.message : 'Ошибка отправки'),
+    onError: (e: unknown) => toast.error(e instanceof ApiError ? e.message : 'Ошибка отправки', { duration: 10_000 }),
   })
 
   const webhookTestMut = useMutation({
@@ -319,7 +339,10 @@ function SettingsPage() {
                       <Input
                         id="set-tg-token"
                         type="password"
-                        placeholder="123456:ABC-DEF..."
+                        autoComplete="new-password"
+                        placeholder={
+                          current?.telegramBotTokenSet ? 'Токен установлен — введите новый для замены' : '123456:ABC-DEF...'
+                        }
                         {...form.register('telegramBotToken')}
                       />
                     </FormField>
@@ -465,10 +488,16 @@ function SettingsPage() {
                             <th className="px-3 py-2 font-medium">Событие</th>
                             <th className="px-3 py-2 font-medium">Канал</th>
                             <th className="px-3 py-2 font-medium">Статус</th>
+                            <th className="px-3 py-2 font-medium">Ошибка</th>
                           </tr>
                         </thead>
                         <tbody>
-                          {notificationRows.map((row) => (
+                          {notificationRows.map((row) => {
+                            const errorText =
+                              row.status === 'failed' && row.payload?.error != null
+                                ? String(row.payload.error)
+                                : ''
+                            return (
                             <tr key={row.id} className="border-b last:border-0">
                               <td className="px-3 py-2 whitespace-nowrap text-muted-foreground">
                                 {new Date(row.createdAt).toLocaleString('ru-RU')}
@@ -476,8 +505,12 @@ function SettingsPage() {
                               <td className="px-3 py-2">{row.event}</td>
                               <td className="px-3 py-2">{row.channel}</td>
                               <td className="px-3 py-2">{row.status}</td>
+                              <td className="max-w-xs px-3 py-2 text-xs text-destructive break-words">
+                                {errorText || '—'}
+                              </td>
                             </tr>
-                          ))}
+                            )
+                          })}
                         </tbody>
                       </table>
                     </div>
diff --git a/packages/db/src/repositories/settings.test.ts b/packages/db/src/repositories/settings.test.ts
new file mode 100644
index 0000000..e7c99c3
--- /dev/null
+++ b/packages/db/src/repositories/settings.test.ts
@@ -0,0 +1,33 @@
+import { beforeEach, describe, expect, it } from 'vitest'
+import { settingsRepository } from './settings.js'
+import { resetTestDb } from '../test-setup.js'
+
+describe('settingsRepository', () => {
+  beforeEach(() => {
+    resetTestDb()
+  })
+
+  it('preserves telegram token on update when token empty', () => {
+    settingsRepository.upsert('settings-main', {
+      telegramBotToken: 'secret-token',
+      telegramChatId: '-100123',
+    })
+    const updated = settingsRepository.upsert('settings-main', {
+      telegramBotToken: '',
+      syncIntervalMinutes: 30,
+    })
+    expect(updated.telegramBotTokenSet).toBe(true)
+    expect(settingsRepository.getRow('settings-main')?.telegramBotToken).toBe('secret-token')
+    expect(updated.syncIntervalMinutes).toBe(30)
+  })
+
+  it('replaces telegram token when new value provided', () => {
+    settingsRepository.upsert('settings-main', {
+      telegramBotToken: 'old-token',
+    })
+    settingsRepository.upsert('settings-main', {
+      telegramBotToken: 'new-token',
+    })
+    expect(settingsRepository.getRow('settings-main')?.telegramBotToken).toBe('new-token')
+  })
+})
diff --git a/packages/db/src/repositories/settings.ts b/packages/db/src/repositories/settings.ts
index bd33451..ef6b873 100644
--- a/packages/db/src/repositories/settings.ts
+++ b/packages/db/src/repositories/settings.ts
@@ -95,7 +95,9 @@ function buildValues(id: string, existing: Row | undefined, r: SettingsInput) {
         ? Math.max(60, Number(r.syncTariffsIntervalMinutes) || 1440)
         : existing?.syncTariffsIntervalMinutes ?? 1440,
     telegramBotToken:
-      r.telegramBotToken !== undefined ? r.telegramBotToken || '' : existing?.telegramBotToken ?? '',
+      r.telegramBotToken !== undefined && String(r.telegramBotToken || '').trim() !== ''
+        ? r.telegramBotToken
+        : existing?.telegramBotToken ?? '',
     telegramChatId:
       r.telegramChatId !== undefined ? r.telegramChatId || '' : existing?.telegramChatId ?? '',
     telegramMessageThreadId:
diff --git a/packages/shared/src/contracts/settings.ts b/packages/shared/src/contracts/settings.ts
index 913305c..529e60e 100644
--- a/packages/shared/src/contracts/settings.ts
+++ b/packages/shared/src/contracts/settings.ts
@@ -26,3 +26,11 @@ export const settingsSchema = z.object({
 })
 
 export type Settings = z.infer<typeof settingsSchema>
+
+export const telegramTestBodySchema = z.object({
+  telegramBotToken: z.string().optional(),
+  telegramChatId: z.string().optional(),
+  telegramMessageThreadId: z.string().optional(),
+})
+
+export type TelegramTestBody = z.infer<typeof telegramTestBodySchema>
diff --git a/packages/ui/src/components/command.tsx b/packages/ui/src/components/command.tsx
index 4d0b745..114f0fd 100644
--- a/packages/ui/src/components/command.tsx
+++ b/packages/ui/src/components/command.tsx
@@ -1,5 +1,3 @@
-"use client"
-
 import * as React from "react"
 import { Command as CommandPrimitive } from "cmdk"
 
diff --git a/packages/ui/src/components/dialog.tsx b/packages/ui/src/components/dialog.tsx
index e4648d2..0bca243 100644
--- a/packages/ui/src/components/dialog.tsx
+++ b/packages/ui/src/components/dialog.tsx
@@ -1,5 +1,3 @@
-"use client"
-
 import * as React from "react"
 import { Dialog as DialogPrimitive } from "@base-ui/react/dialog"
 
diff --git a/packages/ui/src/components/input-group.tsx b/packages/ui/src/components/input-group.tsx
index fd8ee87..1e1f7cd 100644
--- a/packages/ui/src/components/input-group.tsx
+++ b/packages/ui/src/components/input-group.tsx
@@ -1,3 +1,5 @@
+"use client"
+
 import * as React from "react"
 import { cva, type VariantProps } from "class-variance-authority"