Merge pull request 'release: v1.6.0 — promo deep-link seeds EN variant (+ UI nits)' (#135) from development into master

The promo message body now renders "@<bot>" as an HTML text_link to the same ?startapp deep link the button uses (ParseMode HTML), so tapping the mention opens the seeded Mini App instead of the bot profile. Same payload (campaign start-param, else the forwarded /start payload) backs both the button and the mention.

backend/internal/account/profile.go

@@ -101,6 +101,66 @@ func validateVariantPreferences(prefs []string) ([]string, error) {
 	return out, nil
 }
 
+// variantSeedPrefix marks a Telegram start-param payload that seeds a brand-new
+// account's variant preferences (e.g. "verudit_ru-scrabble_en"): the prefix, then the
+// canonical variant labels joined by "-". It is deliberately distinct from the routing
+// deep links (g/i/f; see platform/telegram .../deeplink) so the client's start-param
+// router falls through to the lobby for it.
+const variantSeedPrefix = "v"
+
+// SeedVariantsFromStartParam decodes a promo deep-link start-param into the variant
+// preference set to seed onto a brand-new account: the variantSeedPrefix followed by
+// the canonical variant labels joined by "-" (e.g. "verudit_ru-scrabble_en"). It
+// returns nil for any payload that is not a variant-seed link or that fails validation
+// against the known variants, so a malformed, empty or unrelated start-param simply
+// leaves the account on its default preferences rather than failing the login.
+func SeedVariantsFromStartParam(startParam string) []string {
+	if !strings.HasPrefix(startParam, variantSeedPrefix) {
+		return nil
+	}
+	body := strings.TrimPrefix(startParam, variantSeedPrefix)
+	if body == "" {
+		return nil
+	}
+	prefs, err := validateVariantPreferences(strings.Split(body, "-"))
+	if err != nil {
+		return nil
+	}
+	return prefs
+}
+
+// SetVariantPreferences overwrites only the variant-preference set of the account,
+// cleaning it to a deduplicated, canonically ordered subset of the known variants
+// (rejecting an empty or unknown set with ErrInvalidProfile) and bumping updated_at; it
+// reports ErrNotFound when no account matches id. It is the narrow counterpart to
+// UpdateProfile used to seed a promo-onboarded account's variants at first contact
+// without disturbing its other profile fields.
+func (s *Store) SetVariantPreferences(ctx context.Context, id uuid.UUID, prefs []string) (Account, error) {
+	clean, err := validateVariantPreferences(prefs)
+	if err != nil {
+		return Account{}, err
+	}
+	stmt := table.Accounts.UPDATE(
+		table.Accounts.VariantPreferences, table.Accounts.UpdatedAt,
+	).SET(
+		// clean is validated against the closed knownVariants set; bind as a text[]
+		// parameter (lib/pq encodes the array, the cast pins the column type), mirroring
+		// UpdateProfile.
+		postgres.Raw("#variant_prefs::text[]", map[string]interface{}{"#variant_prefs": pq.StringArray(clean)}),
+		postgres.TimestampzT(time.Now().UTC()),
+	).WHERE(table.Accounts.AccountID.EQ(postgres.UUID(id))).
+		RETURNING(table.Accounts.AllColumns)
+
+	var row model.Accounts
+	if err := stmt.QueryContext(ctx, s.db, &row); err != nil {
+		if errors.Is(err, qrm.ErrNoRows) {
+			return Account{}, ErrNotFound
+		}
+		return Account{}, fmt.Errorf("account: set variant preferences %s: %w", id, err)
+	}
+	return modelToAccount(row), nil
+}
+
 // UpdateProfile validates and overwrites the editable fields of the account, then
 // returns the stored row. It reports ErrInvalidProfile for a bad language,
 // timezone or display name and ErrNotFound when no account matches id.

backend/internal/account/variant_seed_test.go

@@ -0,0 +1,37 @@
+package account
+
+import (
+	"slices"
+	"testing"
+)
+
+// TestSeedVariantsFromStartParam covers decoding a promo deep-link start-param into the
+// variant-preference set to seed: a valid "v"-prefixed, "-"-joined label list is cleaned
+// to the canonical order and deduplicated, while anything that is not a variant-seed link
+// or that names an unknown variant yields nil (leaving the account on its defaults).
+func TestSeedVariantsFromStartParam(t *testing.T) {
+	tests := []struct {
+		name  string
+		param string
+		want  []string
+	}{
+		{"english promo", "verudit_ru-scrabble_en", []string{"erudit_ru", "scrabble_en"}},
+		{"single variant", "vscrabble_en", []string{"scrabble_en"}},
+		{"canonical order regardless of payload order", "vscrabble_en-erudit_ru", []string{"erudit_ru", "scrabble_en"}},
+		{"deduplicated", "verudit_ru-erudit_ru", []string{"erudit_ru"}},
+		{"empty", "", nil},
+		{"prefix only", "v", nil},
+		{"routing game link is not a seed", "g0190abcd", nil},
+		{"friend code link is not a seed", "f123456", nil},
+		{"unknown variant rejected", "vscrabble_de", nil},
+		{"one unknown label rejects the whole set", "verudit_ru-scrabble_de", nil},
+	}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			got := SeedVariantsFromStartParam(tc.param)
+			if !slices.Equal(got, tc.want) {
+				t.Errorf("SeedVariantsFromStartParam(%q) = %v, want %v", tc.param, got, tc.want)
+			}
+		})
+	}
+}

backend/internal/inttest/promo_variant_test.go

@@ -0,0 +1,80 @@
+//go:build integration
+
+package inttest
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"slices"
+	"strings"
+	"testing"
+
+	"github.com/google/uuid"
+	"go.uber.org/zap/zaptest"
+
+	"scrabble/backend/internal/account"
+	"scrabble/backend/internal/server"
+	"scrabble/backend/internal/session"
+)
+
+// TestTelegramAuthSeedsPromoVariantForNewUserOnly drives the sessions/telegram endpoint
+// to confirm a promo deep-link start-param seeds a brand-new account's variant
+// preferences (English Scrabble alongside the default Erudit), that a new account with no
+// such payload keeps the Erudit-only default, and that an existing account is never
+// re-seeded on a later login (the new-user-only contract).
+func TestTelegramAuthSeedsPromoVariantForNewUserOnly(t *testing.T) {
+	srv := server.New(":0", server.Deps{
+		Logger:   zaptest.NewLogger(t),
+		DB:       testDB,
+		Accounts: account.NewStore(testDB),
+		Sessions: session.NewService(session.NewStore(testDB), session.NewCache()),
+		Notifier: &captureNotifier{},
+	})
+	h := srv.Handler()
+
+	post := func(ext, startParam string) {
+		body := `{"external_id":"` + ext + `","language_code":"en","first_name":"Promo"`
+		if startParam != "" {
+			body += `,"start_param":"` + startParam + `"`
+		}
+		body += `}`
+		rec := httptest.NewRecorder()
+		req := httptest.NewRequest(http.MethodPost, "/api/v1/internal/sessions/telegram", strings.NewReader(body))
+		req.Header.Set("Content-Type", "application/json")
+		h.ServeHTTP(rec, req)
+		if rec.Code != http.StatusOK {
+			t.Fatalf("telegram auth = %d: %s", rec.Code, rec.Body.String())
+		}
+	}
+	store := account.NewStore(testDB)
+	reload := func(ext string) []string {
+		acc, err := store.AccountByIdentity(context.Background(), account.KindTelegram, ext)
+		if err != nil {
+			t.Fatalf("lookup %s: %v", ext, err)
+		}
+		return acc.VariantPreferences
+	}
+
+	// A brand-new account reached through a promo deep-link is seeded with English
+	// Scrabble alongside the default Erudit.
+	promoExt := "tg-" + uuid.NewString()
+	post(promoExt, "verudit_ru-scrabble_en")
+	if got, want := reload(promoExt), []string{"erudit_ru", "scrabble_en"}; !slices.Equal(got, want) {
+		t.Errorf("promo new account variants = %v, want %v", got, want)
+	}
+
+	// A brand-new account with no promo payload keeps the Erudit-only default.
+	plainExt := "tg-" + uuid.NewString()
+	post(plainExt, "")
+	if got, want := reload(plainExt), []string{"erudit_ru"}; !slices.Equal(got, want) {
+		t.Errorf("plain new account variants = %v, want %v", got, want)
+	}
+
+	// A later login of the promo account, even via a different payload, must not re-seed:
+	// the seed is first-contact only.
+	post(promoExt, "vscrabble_ru")
+	if got, want := reload(promoExt), []string{"erudit_ru", "scrabble_en"}; !slices.Equal(got, want) {
+		t.Errorf("existing account re-seeded = %v, want unchanged %v", got, want)
+	}
+}

backend/internal/server/handlers_auth.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/gin-gonic/gin"
 	"github.com/google/uuid"
+	"go.uber.org/zap"
 
 	"scrabble/backend/internal/account"
 )
@@ -19,13 +20,16 @@ import (
 // telegramAuthRequest carries the identity the connector extracted from a
 // validated initData payload. Username, FirstName and LanguageCode seed a
 // brand-new account's display name and language; BrowserTZ (the client's detected
-// "±HH:MM" UTC offset) seeds its time zone (first contact only).
+// "±HH:MM" UTC offset) seeds its time zone; StartParam is the validated launch
+// deep-link payload, which may seed the new account's variant preferences (first
+// contact only).
 type telegramAuthRequest struct {
 	ExternalID   string `json:"external_id"`
 	Username     string `json:"username"`
 	FirstName    string `json:"first_name"`
 	LanguageCode string `json:"language_code"`
 	BrowserTZ    string `json:"browser_tz"`
+	StartParam   string `json:"start_param"`
 }
 
 // handleTelegramAuth provisions (or finds) the account bound to a Telegram
@@ -47,6 +51,16 @@ func (s *Server) handleTelegramAuth(c *gin.Context) {
 		// joined the chat before registering is granted on the spot (no chat_member
 		// event fires on registration).
 		s.publishChatAccessChange(acc.ID)
+		// A promo deep-link may seed this brand-new account's variant preferences (e.g.
+		// English Scrabble alongside the default Erudit). Best-effort: an absent or
+		// malformed payload leaves the account on its defaults, and a write failure must
+		// not block the session mint.
+		if seed := account.SeedVariantsFromStartParam(req.StartParam); len(seed) > 0 {
+			if _, err := s.accounts.SetVariantPreferences(c.Request.Context(), acc.ID, seed); err != nil {
+				s.log.Warn("telegram: seed variant preferences failed",
+					zap.String("account", acc.ID.String()), zap.Error(err))
+			}
+		}
 	}
 	s.mintSession(c, acc)
 }

deploy/.env.example

@@ -51,6 +51,7 @@ TELEGRAM_SUPPORT_CHAT_ID=              # private forum supergroup for the suppor
 TELEGRAM_PROMO_BOT_TOKEN=             # optional standalone promo bot token; empty disables it
 TELEGRAM_BOT_USERNAME=               # main bot @username without the @ (promo message); required when the promo token is set
 TELEGRAM_BOT_LINK=                    # main bot Mini App link for the promo button (reuse VITE_TELEGRAM_LINK); required when the promo token is set
+TELEGRAM_PROMO_START_PARAM=           # promo button startapp payload — a variant-seed deep link (default verudit_ru-scrabble_en) adding English Scrabble for new users; empty forwards the user's /start payload
 TELEGRAM_MINIAPP_URL=                  # required
 TELEGRAM_TEST_ENV=false
 TELEGRAM_API_BASE_URL=

deploy/docker-compose.bot.yml

@@ -31,6 +31,7 @@ services:
       TELEGRAM_PROMO_BOT_TOKEN: ${TELEGRAM_PROMO_BOT_TOKEN:-}
       TELEGRAM_BOT_USERNAME: ${TELEGRAM_BOT_USERNAME:-}
       TELEGRAM_BOT_LINK: ${TELEGRAM_BOT_LINK:-}
+      TELEGRAM_PROMO_START_PARAM: ${TELEGRAM_PROMO_START_PARAM:-}
       TELEGRAM_MINIAPP_URL: ${TELEGRAM_MINIAPP_URL:?set TELEGRAM_MINIAPP_URL}
       # Real Bot API in prod (the test contour pins TELEGRAM_TEST_ENV=true instead).
       TELEGRAM_TEST_ENV: "false"

docs/ARCHITECTURE.md

@@ -204,7 +204,7 @@ arrive from a platform rather than completing a mandatory registration).
 > recipient's interface language (`preferred_language`), with no per-bot routing. New
 > Game variant gating moved off the login language onto a per-user profile setting
 > `variant_preferences` (default Erudit only, server-enforced on the caller's create
-> paths; an invited friend may still accept any variant). The per-bot env vars and
+> paths; an invited friend may still accept any variant, and a Telegram **promo deep-link** seeds extra variants — e.g. English Scrabble — onto a brand-new account via the validated `start_param`). The per-bot env vars and
 > `GATEWAY_DEFAULT_SUPPORTED_LANGUAGES` were removed; the wire dropped
 > `service_language`/`supported_languages` and the push `language` routing field, and
 > gained `variant_preferences` on Profile/UpdateProfile.
@@ -1204,8 +1204,10 @@ migration.
 **Telegram support relay.** Separate from the in-app Feedback above, the bot offers a direct
 support channel for users who message it on Telegram. Any message other than `/start` is relayed
 into a private **forum supergroup** (`TELEGRAM_SUPPORT_CHAT_ID`): a user's first message opens a
-dedicated **forum topic** whose first message is an info card (name, @username, language, premium,
-id, profile deep-link) carrying a Block/Unblock toggle and a Clear button; every message is then
+dedicated **forum topic** whose first message is an info card (the name is a tappable profile
+mention via a `text_mention` entity — which also keeps a name beginning with `/` from being read as
+a command — plus @username, language, premium, id) carrying a Block/Unblock toggle and a Clear
+button; every message is then
 copied into that topic (`copyMessage`, so any content — text, media, voice, files — carries over).
 Any **administrator** of the support chat who writes in a user's topic has their message copied
 back to that user; non-admins and the bot's own posts are ignored (the loop guard). Block drops the

docs/FUNCTIONAL.md

@@ -253,8 +253,9 @@ merge".
 
 **Preferences (which variants you can be matched into).** A profile setting picks the game
 variants — Erudite, Russian Scrabble and English Scrabble, shown **Erudite-first** — you allow
-yourself to be matched into; a **new account starts with Erudite only**, and you must keep **at
-least one** selected. This list is exactly what **New Game** offers when you start a game
+yourself to be matched into; a **new account starts with Erudite only** — unless it was created
+through the **promo bot's deep link**, which also enables **English Scrabble** — and you must keep
+**at least one** selected. This list is exactly what **New Game** offers when you start a game
 (auto-match, an AI game, or a friend invitation you create) — a variant you have not enabled is
 not offered, and the server refuses it. It does not restrict games you are **invited** to: an
 invited friend may accept an invitation in **any** variant, and you can always open and play

docs/FUNCTIONAL_ru.md

@@ -259,8 +259,9 @@ UTC; при создании аккаунта она подставляется
 
 **Предпочтения (в какие варианты тебя можно подбирать).** Настройка профиля задаёт варианты
 игры — Эрудит, русский Scrabble и английский Scrabble, показанные **сначала Эрудит**, — в
-которые ты разрешаешь себя подбирать; **новый аккаунт стартует только с Эрудитом**, и нужно
-оставить выбранным **хотя бы один**. Именно этот список предлагает **Новая игра**, когда ты
+которые ты разрешаешь себя подбирать; **новый аккаунт стартует только с Эрудитом** — если только
+он не создан по **диплинку промо-бота**, который дополнительно включает **английский Scrabble**, —
+и нужно оставить выбранным **хотя бы один**. Именно этот список предлагает **Новая игра**, когда ты
 запускаешь партию (авто-подбор, игра с ИИ или приглашение друга, которое ты создаёшь), — не
 включённый вариант не предлагается, и сервер его отклоняет. На партии, в которые тебя
 **приглашают**, это не влияет: приглашённый друг может принять приглашение в **любом** варианте,

gateway/internal/backendclient/api.go

@@ -184,10 +184,10 @@ type ChatResp struct {
 }
 
 // TelegramAuth provisions/finds the Telegram account and mints a session, seeding a
-// brand-new account's display name and language from the validated launch fields and
-// its time zone from browserTz (the client's detected "±HH:MM" UTC offset; first
-// contact only).
-func (c *Client) TelegramAuth(ctx context.Context, externalID, languageCode, username, firstName, browserTz string) (SessionResp, error) {
+// brand-new account's display name and language from the validated launch fields, its
+// time zone from browserTz (the client's detected "±HH:MM" UTC offset) and, from the
+// validated launch deep-link startParam, its variant preferences (first contact only).
+func (c *Client) TelegramAuth(ctx context.Context, externalID, languageCode, username, firstName, browserTz, startParam string) (SessionResp, error) {
 	var out SessionResp
 	err := c.do(ctx, http.MethodPost, "/api/v1/internal/sessions/telegram", "", "",
 		map[string]string{
@@ -196,6 +196,7 @@ func (c *Client) TelegramAuth(ctx context.Context, externalID, languageCode, use
 			"username":      username,
 			"first_name":    firstName,
 			"browser_tz":    browserTz,
+			"start_param":   startParam,
 		}, &out)
 	return out, err
 }

gateway/internal/transcode/transcode.go

@@ -9,6 +9,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"net/url"
 
 	"scrabble/gateway/internal/backendclient"
 	"scrabble/gateway/internal/connector"
@@ -154,11 +155,19 @@ func DomainCode(err error) (string, bool) {
 func authTelegramHandler(backend *backendclient.Client, tg TelegramValidator) Handler {
 	return func(ctx context.Context, req Request) ([]byte, error) {
 		in := fb.GetRootAsTelegramLoginRequest(req.Payload, 0)
-		user, err := tg.ValidateInitData(ctx, string(in.InitData()))
+		initData := string(in.InitData())
+		user, err := tg.ValidateInitData(ctx, initData)
 		if err != nil {
 			return nil, err
 		}
-		sess, err := backend.TelegramAuth(ctx, user.ExternalID, user.LanguageCode, user.Username, user.FirstName, string(in.BrowserTz()))
+		// start_param rides inside the signed initData validated just above, so the launch
+		// deep-link payload can be trusted here without a separate wire field; the backend
+		// uses it to seed a brand-new account's variant preferences.
+		startParam := ""
+		if q, perr := url.ParseQuery(initData); perr == nil {
+			startParam = q.Get("start_param")
+		}
+		sess, err := backend.TelegramAuth(ctx, user.ExternalID, user.LanguageCode, user.Username, user.FirstName, string(in.BrowserTz()), startParam)
 		if err != nil {
 			return nil, err
 		}

gateway/internal/transcode/transcode_telegram_test.go

@@ -54,7 +54,7 @@ func TestTelegramAuthForwardsSeedFields(t *testing.T) {
 		t.Fatal("auth.telegram not registered")
 	}
 
-	payload, err := op.Handler(context.Background(), transcode.Request{Payload: telegramLoginPayload("init")})
+	payload, err := op.Handler(context.Background(), transcode.Request{Payload: telegramLoginPayload("start_param=verudit_ru-scrabble_en&query_id=abc")})
 	if err != nil {
 		t.Fatalf("handler: %v", err)
 	}
@@ -66,6 +66,11 @@ func TestTelegramAuthForwardsSeedFields(t *testing.T) {
 	if gotBody["external_id"] != "42" || gotBody["language_code"] != "ru" || gotBody["first_name"] != "Иван" {
 		t.Errorf("forwarded body = %+v, want external_id=42 language_code=ru first_name=Иван", gotBody)
 	}
+	// start_param is parsed out of the validated initData and forwarded so the backend can
+	// seed the new account's variant preferences from a promo deep link.
+	if gotBody["start_param"] != "verudit_ru-scrabble_en" {
+		t.Errorf("forwarded start_param = %q, want verudit_ru-scrabble_en", gotBody["start_param"])
+	}
 }
 
 func TestTelegramAuthInvalidInitData(t *testing.T) {

platform/telegram/README.md

@@ -65,8 +65,9 @@ Telegram identity to an account from a browser. Both map a rejection to gRPC
   `chat_member` updates, which Telegram delivers only to a chat admin.
 - **Support relay (optional).** When `TELEGRAM_SUPPORT_CHAT_ID` names a private **forum
   supergroup**, the bot runs a direct support channel for users who message it. A user's first
-  non-`/start` message opens a dedicated **forum topic** whose first message is an info card (name,
-  @username, language, premium, id, `tg://user` profile link) carrying a **Block/Unblock** toggle
+  non-`/start` message opens a dedicated **forum topic** whose first message is an info card (the
+  name is a tappable profile mention via a `text_mention` entity — which also stops a name starting
+  with `/` from rendering as a command — plus @username, language, premium, id) with a **Block/Unblock** toggle
   and a **Clear** button; each message is then copied into that topic (`copyMessage`, so any content
   — text, media, voice, files — carries over). Any **administrator** of the support chat who writes
   in a user's topic has it copied back to that user; the bot's own posts and non-admins are ignored
@@ -82,7 +83,12 @@ Telegram identity to an account from a browser. Both map a rejection to gRPC
   the main bot's direct link (`TELEGRAM_BOT_LINK`, the same link the UI uses) with
   `?startapp` — a `web_app` button would launch under the promo bot's identity (its token
   would sign the initData), which the main bot's validator rejects. It is fully
-  self-contained: no bot-link, no gateway, no game.
+  self-contained: no bot-link, no gateway, no game. Its `?startapp` payload
+  (`TELEGRAM_PROMO_START_PARAM`, default `verudit_ru-scrabble_en`) is a variant-seed deep
+  link the backend decodes to seed a brand-new user's variant preferences (English Scrabble
+  alongside the default Erudit). The message body also renders the bot's `@username` as that
+  same deep link (an HTML `text_link`), so tapping the mention — not just the button — opens
+  the seeded Mini App rather than the bot profile.
 - **Rate limiting.** Outbound sends are throttled (`TELEGRAM_SEND_RATE_PER_SECOND`,
   default 25) to respect the Bot API flood limits.
 
@@ -150,6 +156,7 @@ Bot (`cmd/bot`):
 | `TELEGRAM_PROMO_BOT_TOKEN` | — | the optional standalone promo bot's token; empty disables it |
 | `TELEGRAM_BOT_USERNAME` | — | the main bot's @username without the @ (promo message); required when the promo bot runs |
 | `TELEGRAM_BOT_LINK` | — | the main bot's Mini App link for the promo button (the UI's `VITE_TELEGRAM_LINK`); required when the promo bot runs |
+| `TELEGRAM_PROMO_START_PARAM` | `verudit_ru-scrabble_en` | the promo button's `startapp` payload — a variant-seed deep link the backend decodes to seed a brand-new user's variant preferences; empty forwards the user's own `/start` payload |
 | `TELEGRAM_OWNS_UPDATES` | `true` | run the exclusive `getUpdates` long-poll (one bot per token) |
 | `TELEGRAM_SEND_RATE_PER_SECOND` | `25` | outbound Bot API send cap (0 disables) |
 | `TELEGRAM_INSTANCE_ID` | hostname | bot identity reported to the gateway |

platform/telegram/cmd/bot/main.go

@@ -131,6 +131,7 @@ func run(ctx context.Context, cfg config.BotConfig, logger *zap.Logger) error {
 			TestEnv:           cfg.TestEnv,
 			BotUsername:       cfg.BotUsername,
 			BotLinkURL:        cfg.BotLinkURL,
+			StartParam:        cfg.PromoStartParam,
 			SendRatePerSecond: cfg.SendRatePerSecond,
 		}, logger)
 		if err != nil {

platform/telegram/internal/bot/support.go

@@ -3,15 +3,17 @@ package bot
 import (
 	"context"
 	"fmt"
-	"html"
 	"strconv"
 	"strings"
 	"sync"
 	"time"
+	"unicode/utf16"
 
 	tgbot "github.com/go-telegram/bot"
 	"github.com/go-telegram/bot/models"
 	"go.uber.org/zap"
+
+	"scrabble/platform/telegram/internal/support"
 )
 
 // Support relay: the bot forwards a user's direct messages into a per-user forum
@@ -130,26 +132,20 @@ func (t *Bot) handleSupportUserMessage(ctx context.Context, m *models.Message) {
 	unlock := t.supportLocks.lock(uid)
 	defer unlock()
 
-	rec, ok := t.support.Get(uid)
-	if ok && rec.Blocked {
+	rec, _ := t.support.Get(uid)
+	if rec.Blocked {
 		return
 	}
-	topicID := 0
-	if ok {
-		topicID = rec.TopicID
-	}
-	if topicID == 0 {
-		var err error
-		if topicID, err = t.openSupportTopic(ctx, m.From); err != nil {
-			t.log.Warn("support: open topic failed", zap.Int64("user_id", uid), zap.Error(err))
+	topicID, err := t.ensureTopic(ctx, m.From, rec)
+	if err != nil {
+		t.log.Warn("support: ensure topic failed", zap.Int64("user_id", uid), zap.Error(err))
 		return
 	}
-	}
 
 	newID, err := t.copyToTopic(ctx, m.Chat.ID, m.ID, topicID)
 	if err != nil && isTopicMissingErr(err) {
-		// The operators deleted the whole topic; reopen it and retry once.
-		t.log.Info("support: topic gone, reopening", zap.Int64("user_id", uid), zap.Int("topic_id", topicID))
+		// Backstop: the topic vanished between the liveness probe and the copy.
+		t.log.Info("support: topic gone on copy, reopening", zap.Int64("user_id", uid), zap.Int("topic_id", topicID))
 		if topicID, err = t.openSupportTopic(ctx, m.From); err == nil {
 			newID, err = t.copyToTopic(ctx, m.Chat.ID, m.ID, topicID)
 		}
@@ -258,6 +254,31 @@ func (t *Bot) clearSupportTopic(ctx context.Context, cq *models.CallbackQuery, u
 	t.answerSupportCallback(ctx, cq.ID, "Очищено")
 }
 
+// ensureTopic returns a live forum-topic id for the user, opening a fresh topic (and
+// info card) when none exists or the previous one was deleted. Telegram silently
+// routes a copy aimed at a deleted topic into the chat's General topic (no error), so
+// the bot cannot rely on copyMessage failing; instead it probes the info card —
+// re-applying the card's reply markup is a no-op that errors only when the card (hence
+// the topic) is gone — and reopens on that signal. The probe also keeps the card's
+// block button in sync with the stored state.
+func (t *Bot) ensureTopic(ctx context.Context, u *models.User, rec support.User) (int, error) {
+	if rec.TopicID == 0 || rec.HeaderMsgID == 0 {
+		return t.openSupportTopic(ctx, u)
+	}
+	_, err := t.api.EditMessageReplyMarkup(ctx, &tgbot.EditMessageReplyMarkupParams{
+		ChatID:      t.supportChatID,
+		MessageID:   rec.HeaderMsgID,
+		ReplyMarkup: supportCardMarkup(u.ID, rec.Blocked),
+	})
+	if isCardMissingErr(err) {
+		t.log.Info("support: topic gone, reopening", zap.Int64("user_id", u.ID), zap.Int("topic_id", rec.TopicID))
+		return t.openSupportTopic(ctx, u)
+	}
+	// Any other outcome (success, or a benign "message is not modified") means the
+	// topic is alive; reuse it.
+	return rec.TopicID, nil
+}
+
 // openSupportTopic creates a forum topic for the user and posts its info card with
 // the block/clear buttons, persisting both. It returns the new topic id. A failure to
 // persist is logged but not fatal: the in-memory mapping still lets the relay proceed.
@@ -270,11 +291,12 @@ func (t *Bot) openSupportTopic(ctx context.Context, u *models.User) (int, error)
 		return 0, fmt.Errorf("create forum topic: %w", err)
 	}
 	headerID := 0
+	cardText, cardEntities := supportCard(u)
 	header, err := t.api.SendMessage(ctx, &tgbot.SendMessageParams{
 		ChatID:          t.supportChatID,
 		MessageThreadID: topic.MessageThreadID,
-		Text:            supportCardText(u),
-		ParseMode:       models.ParseModeHTML,
+		Text:            cardText,
+		Entities:        cardEntities,
 		ReplyMarkup:     supportCardMarkup(u.ID, false),
 	})
 	if err != nil {
@@ -396,16 +418,22 @@ func supportTopicName(u *models.User) string {
 	return name
 }
 
-// supportCardText renders the info card describing the user. User-controlled fields
-// are HTML-escaped because the card uses HTML parse mode for the profile link.
-func supportCardText(u *models.User) string {
-	name := html.EscapeString(strings.TrimSpace(u.FirstName + " " + u.LastName))
+// supportCard renders the topic info card describing the user and the message
+// entities for it. The display name is covered by a text_mention entity: it links to
+// the user's profile (the reliable way to mention a user who has no public username —
+// the bot has seen them, since they messaged it) and, because the name sits inside an
+// entity, Telegram does not auto-detect a leading "/" as a bot command or a stray
+// "@handle" inside the name as a mention. The remaining lines are plain text; a public
+// @username, when present, is left for Telegram to auto-link. Entity offsets are in
+// UTF-16 code units, as the Bot API requires; the name is at offset 0.
+func supportCard(u *models.User) (string, []models.MessageEntity) {
+	name := strings.TrimSpace(u.FirstName + " " + u.LastName)
 	if name == "" {
-		name = "—"
+		name = "user " + strconv.FormatInt(u.ID, 10)
 	}
 	username := "—"
 	if u.Username != "" {
-		username = "@" + html.EscapeString(u.Username)
+		username = "@" + u.Username
 	}
 	lang := u.LanguageCode
 	if lang == "" {
@@ -416,12 +444,30 @@ func supportCardText(u *models.User) string {
 		premium = "да"
 	}
 	var b strings.Builder
-	fmt.Fprintf(&b, "<b>%s</b>\n", name)
-	fmt.Fprintf(&b, "Username: %s\n", username)
-	fmt.Fprintf(&b, "ID: <code>%d</code>\n", u.ID)
-	fmt.Fprintf(&b, "Язык: %s · Premium: %s\n", html.EscapeString(lang), premium)
-	fmt.Fprintf(&b, `<a href="tg://user?id=%d">Открыть профиль</a>`, u.ID)
-	return b.String()
+	b.WriteString(name)
+	fmt.Fprintf(&b, "\nUsername: %s", username)
+	fmt.Fprintf(&b, "\nID: %d", u.ID)
+	fmt.Fprintf(&b, "\nЯзык: %s · Premium: %s", lang, premium)
+	entities := []models.MessageEntity{{
+		Type:   models.MessageEntityTypeTextMention,
+		Offset: 0,
+		Length: len(utf16.Encode([]rune(name))),
+		User:   &models.User{ID: u.ID},
+	}}
+	return b.String(), entities
+}
+
+// isCardMissingErr reports whether err means the info-card message no longer exists
+// (the operators deleted the topic), as opposed to a benign "message is not modified"
+// no-op when the card is still there.
+func isCardMissingErr(err error) bool {
+	if err == nil {
+		return false
+	}
+	s := strings.ToLower(err.Error())
+	return strings.Contains(s, "message to edit not found") ||
+		strings.Contains(s, "message can't be edited") ||
+		strings.Contains(s, "message_id_invalid")
 }
 
 // isTopicMissingErr reports whether err is Telegram's deleted/absent forum-topic

platform/telegram/internal/bot/support_test.go

@@ -38,6 +38,9 @@ type supportAPI struct {
 	deleted      [][]int
 	editedMsgIDs []string
 	answers      []string
+	// editErr, when set, makes editMessageReplyMarkup return that Telegram error
+	// description (simulating a deleted info card / topic).
+	editErr string
 }
 
 func newSupportAPI(adminIDs ...int64) *supportAPI {
@@ -77,6 +80,10 @@ func (s *supportAPI) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		s.deleted = append(s.deleted, ids)
 		io.WriteString(w, `{"ok":true,"result":true}`)
 	case strings.HasSuffix(path, "/editMessageReplyMarkup"):
+		if s.editErr != "" {
+			fmt.Fprintf(w, `{"ok":false,"error_code":400,"description":%q}`, s.editErr)
+			return
+		}
 		s.editedMsgIDs = append(s.editedMsgIDs, r.FormValue("message_id"))
 		io.WriteString(w, `{"ok":true,"result":{"message_id":1}}`)
 	case strings.HasSuffix(path, "/answerCallbackQuery"):
@@ -181,6 +188,36 @@ func TestSupportSubsequentReusesTopic(t *testing.T) {
 	}
 }
 
+// TestSupportTopicRecreatedWhenDeleted covers the case the operator hit in prod:
+// after they delete a user's whole topic, Telegram routes a copy aimed at it into
+// General with no error, so the bot must proactively detect the dead topic (the card
+// probe fails) and reopen it instead of silently losing the message to General.
+func TestSupportTopicRecreatedWhenDeleted(t *testing.T) {
+	api := newSupportAPI()
+	api.editErr = "message to edit not found" // the operators deleted the topic + its card
+	b, st := newSupportBot(t, api)
+	// Seed a topic that has since been deleted in Telegram.
+	if err := st.SetTopic(7, 999, 4999, "Ann", "", "annlee"); err != nil {
+		t.Fatalf("seed topic: %v", err)
+	}
+
+	b.handleSupportUserMessage(context.Background(), userMsg(7, "still there?"))
+
+	if api.topicsOpened != 1 {
+		t.Fatalf("topics opened = %d, want 1 (reopened after deletion)", api.topicsOpened)
+	}
+	rec, _ := st.Get(7)
+	if rec.TopicID != 1000 || rec.HeaderMsgID != 5000 {
+		t.Errorf("store = topic %d / header %d, want the reopened 1000 / 5000", rec.TopicID, rec.HeaderMsgID)
+	}
+	if len(api.copies) != 1 || api.copies[0].threadID != "1000" {
+		t.Errorf("relay copies = %+v, want one into the reopened topic 1000", api.copies)
+	}
+	if _, ok := st.ByTopic(999); ok {
+		t.Error("stale topic 999 still indexed after reopen")
+	}
+}
+
 func TestSupportBlockedUserDropped(t *testing.T) {
 	api := newSupportAPI()
 	b, st := newSupportBot(t, api)
@@ -360,21 +397,53 @@ func TestParseSupportCallback(t *testing.T) {
 	}
 }
 
-func TestSupportCardTextEscapes(t *testing.T) {
-	u := &models.User{ID: 7, FirstName: "<b>Ann</b>", Username: "ann", LanguageCode: "ru", IsPremium: true}
-	card := supportCardText(u)
-	if strings.Contains(card, "<b>Ann</b>") {
-		t.Error("user-supplied first name was not HTML-escaped in the card")
+func TestSupportCard(t *testing.T) {
+	t.Run("name is a plain-text mention, not a command", func(t *testing.T) {
+		u := &models.User{ID: 7, FirstName: "/start", Username: "ann", LanguageCode: "ru", IsPremium: true}
+		text, ents := supportCard(u)
+		// The name is rendered verbatim (no HTML, no escaping) at the start of the card.
+		if !strings.HasPrefix(text, "/start\n") {
+			t.Errorf("card = %q, want it to start with the raw name", text)
 		}
-	if !strings.Contains(card, "&lt;b&gt;Ann&lt;/b&gt;") {
-		t.Errorf("card = %q, want the escaped name", card)
+		// A text_mention entity covers exactly the name with the user id — this both
+		// suppresses the "/start" command auto-detection and links the profile.
+		if len(ents) != 1 {
+			t.Fatalf("entities = %d, want 1", len(ents))
 		}
-	if !strings.Contains(card, "tg://user?id=7") {
-		t.Error("card missing the profile deep link")
+		e := ents[0]
+		if e.Type != models.MessageEntityTypeTextMention || e.Offset != 0 || e.Length != len("/start") {
+			t.Errorf("entity = %+v, want a text_mention over the name", e)
 		}
-	if !strings.Contains(card, "Premium: да") {
-		t.Error("card missing the premium flag")
+		if e.User == nil || e.User.ID != 7 {
+			t.Errorf("entity user = %+v, want id 7", e.User)
 		}
+		if strings.Contains(text, "tg://") || strings.Contains(text, "<") {
+			t.Errorf("card = %q, want no tg:// link and no HTML", text)
+		}
+		if !strings.Contains(text, "Premium: да") || !strings.Contains(text, "@ann") {
+			t.Errorf("card = %q, want premium + @username", text)
+		}
+	})
+
+	t.Run("entity length is UTF-16, not runes", func(t *testing.T) {
+		// "😀A" is 2 runes but 3 UTF-16 code units (the emoji is a surrogate pair).
+		u := &models.User{ID: 9, FirstName: "😀A"}
+		_, ents := supportCard(u)
+		if len(ents) != 1 || ents[0].Length != 3 {
+			t.Fatalf("entity = %+v, want length 3 UTF-16 units", ents)
+		}
+	})
+
+	t.Run("nameless user falls back to an id label", func(t *testing.T) {
+		u := &models.User{ID: 42}
+		text, ents := supportCard(u)
+		if !strings.HasPrefix(text, "user 42") {
+			t.Errorf("card = %q, want the id fallback name", text)
+		}
+		if ents[0].Length != len("user 42") {
+			t.Errorf("entity length = %d, want it over the fallback name", ents[0].Length)
+		}
+	})
 }
 
 func TestSupportTopicName(t *testing.T) {

platform/telegram/internal/config/config.go

@@ -65,6 +65,12 @@ type BotConfig struct {
 	// button appends ?startapp=<payload> to it (TELEGRAM_BOT_LINK; required when the
 	// promo bot runs). It is distinct from the BotLink mTLS dial config below.
 	BotLinkURL string
+	// PromoStartParam is the promo button's launch payload, appended as
+	// ?startapp=<PromoStartParam> (TELEGRAM_PROMO_START_PARAM, default
+	// "verudit_ru-scrabble_en"). It is a variant-seed deep link the backend decodes to
+	// seed a brand-new user's variant preferences; its labels must match the backend's
+	// known variants. Empty falls back to forwarding the user's own /start payload.
+	PromoStartParam string
 	// MiniAppURL is the HTTPS origin of the Mini App registered with BotFather; it is
 	// the base of every launch button (TELEGRAM_MINIAPP_URL, required).
 	MiniAppURL string
@@ -113,6 +119,10 @@ const (
 	defaultValidatorGRPCAddr = ":9091"
 	defaultBotReconnectDelay = 2 * time.Second
 	defaultSendRatePerSecond = 25
+	// defaultPromoStartParam is the promo button's default launch payload: a variant-seed
+	// deep link the backend decodes to add English Scrabble to a brand-new user's variant
+	// preferences alongside the default Erudit. Override with TELEGRAM_PROMO_START_PARAM.
+	defaultPromoStartParam = "verudit_ru-scrabble_en"
 )
 
 // LoadValidator reads the validator configuration from the environment.
@@ -145,6 +155,7 @@ func LoadBot() (BotConfig, error) {
 		PromoBotToken:     os.Getenv("TELEGRAM_PROMO_BOT_TOKEN"),
 		BotUsername:       strings.TrimPrefix(os.Getenv("TELEGRAM_BOT_USERNAME"), "@"),
 		BotLinkURL:        os.Getenv("TELEGRAM_BOT_LINK"),
+		PromoStartParam:   envOr("TELEGRAM_PROMO_START_PARAM", defaultPromoStartParam),
 		SupportStateDir:   envOr("TELEGRAM_SUPPORT_STATE_DIR", "/data"),
 		LogLevel:          envOr("TELEGRAM_LOG_LEVEL", "info"),
 		BotLink: BotLinkClientConfig{

platform/telegram/internal/promobot/promobot.go

@@ -9,7 +9,9 @@
 package promobot
 
 import (
+	"cmp"
 	"context"
+	"html"
 	"net/url"
 	"strings"
 
@@ -33,6 +35,11 @@ type Config struct {
 	// BotLinkURL is the main bot's Mini App direct link; the button appends
 	// ?startapp=<payload> to it.
 	BotLinkURL string
+	// StartParam is the campaign payload appended as ?startapp=<StartParam> to the launch
+	// button — e.g. a variant-seed deep link ("verudit_ru-scrabble_en") the backend
+	// decodes to seed a brand-new user's variant preferences. Empty falls back to
+	// forwarding the user's own /start payload.
+	StartParam string
 	// SendRatePerSecond caps outbound sends to respect the Bot API flood limits; 0
 	// disables the limiter. The burst equals the per-second rate.
 	SendRatePerSecond int
@@ -43,6 +50,7 @@ type Bot struct {
 	api        *tgbot.Bot
 	username   string
 	linkURL    string
+	startParam string
 	log        *zap.Logger
 	limiter    *rate.Limiter
 }
@@ -53,7 +61,7 @@ func New(cfg Config, log *zap.Logger) (*Bot, error) {
 	if log == nil {
 		log = zap.NewNop()
 	}
-	t := &Bot{username: cfg.BotUsername, linkURL: cfg.BotLinkURL, log: log}
+	t := &Bot{username: cfg.BotUsername, linkURL: cfg.BotLinkURL, startParam: cfg.StartParam, log: log}
 	if cfg.SendRatePerSecond > 0 {
 		t.limiter = rate.NewLimiter(rate.Limit(cfg.SendRatePerSecond), cfg.SendRatePerSecond)
 	}
@@ -87,7 +95,8 @@ func (t *Bot) Run(ctx context.Context) {
 }
 
 // handleStart replies to any message (typically /start) with the localized promo text
-// and a button that opens the main bot's Mini App, forwarding any /start payload.
+// and a button that opens the main bot's Mini App at the configured campaign payload
+// (falling back to forwarding any /start payload the user arrived with).
 func (t *Bot) handleStart(ctx context.Context, api *tgbot.Bot, update *models.Update) {
 	if update.Message == nil {
 		return
@@ -104,11 +113,16 @@ func (t *Bot) handleStart(ctx context.Context, api *tgbot.Bot, update *models.Up
 	if update.Message.From != nil {
 		lang = update.Message.From.LanguageCode
 	}
-	text, button := promoText(lang, t.username)
+	// The configured campaign payload (a variant-seed deep link) takes precedence; absent
+	// one, fall back to forwarding any /start payload the user arrived with. The same
+	// payload backs both the inline button and the @username link in the body.
+	param := cmp.Or(t.startParam, startPayload(update.Message.Text))
+	text, button := promoText(lang, t.username, t.launchURL(param))
 	if _, err := api.SendMessage(ctx, &tgbot.SendMessageParams{
 		ChatID:      update.Message.Chat.ID,
 		Text:        text,
-		ReplyMarkup: t.launchMarkup(button, startPayload(update.Message.Text)),
+		ParseMode:   models.ParseModeHTML,
+		ReplyMarkup: t.launchMarkup(button, param),
 	}); err != nil {
 		t.log.Warn("promo: reply to start failed", zap.Error(err))
 	}
@@ -159,11 +173,15 @@ func startPayload(text string) string {
 	return strings.TrimSpace(strings.TrimPrefix(text, cmd))
 }
 
-// promoText returns the localized message body and button label, naming the main bot
-// (Russian for a "ru" language code, English otherwise).
-func promoText(lang, username string) (text, button string) {
+// promoText returns the localized message body and button label. The body names the main
+// bot as a clickable @username whose link is the Mini App deep link (launchURL, the same
+// target as the button), so tapping the mention opens the seeded Mini App rather than the
+// bot profile. The body is sent with ParseMode HTML; only the link carries markup, so the
+// static sentences need no escaping. Russian for a "ru" language code, English otherwise.
+func promoText(lang, username, launchURL string) (text, button string) {
+	mention := `<a href="` + html.EscapeString(launchURL) + `">@` + html.EscapeString(username) + `</a>`
 	if strings.HasPrefix(strings.ToLower(lang), "ru") {
-		return "Откройте @" + username + " и выберите в настройках профиля нужный вариант игры.", "🤩 Хочу играть!"
+		return "Откройте " + mention + " и выберите в настройках профиля нужный вариант игры.", "🤩 Хочу играть!"
 	}
-	return "Open @" + username + " and choose your game variant in the profile settings.", "🤩 I want to play!"
+	return "Open " + mention + " and choose your game variant in the profile settings.", "🤩 I want to play!"
 }

platform/telegram/internal/promobot/promobot_test.go

@@ -13,25 +13,30 @@ import (
 )
 
 func TestPromoTextLocalization(t *testing.T) {
-	en, enBtn := promoText("en", "ScrabbleBot")
-	if !strings.Contains(en, "@ScrabbleBot") || !strings.Contains(en, "profile settings") {
+	const url = "https://t.me/bot/app?startapp=verudit_ru-scrabble_en"
+	// The @username is rendered as a clickable deep link (the same target as the button),
+	// not a plain mention, so tapping it opens the seeded Mini App.
+	wantLink := `<a href="` + url + `">@ScrabbleBot</a>`
+
+	en, enBtn := promoText("en", "ScrabbleBot", url)
+	if !strings.Contains(en, wantLink) || !strings.Contains(en, "profile settings") {
 		t.Errorf("en text = %q", en)
 	}
 	if enBtn != "🤩 I want to play!" {
 		t.Errorf("en button = %q", enBtn)
 	}
 
-	ru, ruBtn := promoText("ru-RU", "ScrabbleBot")
-	if !strings.Contains(ru, "@ScrabbleBot") || !strings.Contains(ru, "Откройте") {
+	ru, ruBtn := promoText("ru-RU", "ScrabbleBot", url)
+	if !strings.Contains(ru, wantLink) || !strings.Contains(ru, "Откройте") {
 		t.Errorf("ru text = %q", ru)
 	}
 	if ruBtn != "🤩 Хочу играть!" {
 		t.Errorf("ru button = %q", ruBtn)
 	}
 
-	// An unknown language falls back to English.
-	if got, _ := promoText("de", "B"); !strings.Contains(got, "Open @B") {
-		t.Errorf("fallback text = %q, want English", got)
+	// An unknown language falls back to English, still with the linked mention.
+	if got, _ := promoText("de", "B", url); !strings.Contains(got, "Open ") || !strings.Contains(got, `">@B</a>`) {
+		t.Errorf("fallback text = %q, want English with a linked mention", got)
 	}
 }
 
@@ -93,8 +98,8 @@ func TestHandleStartReplies(t *testing.T) {
 	if api.chatID != "42" {
 		t.Errorf("chat_id = %q, want 42", api.chatID)
 	}
-	if !strings.Contains(api.text, "@ScrabbleBot") {
-		t.Errorf("text = %q, want the @mention", api.text)
+	if !strings.Contains(api.text, `<a href="https://t.me/bot/app?startapp=f99">@ScrabbleBot</a>`) {
+		t.Errorf("text = %q, want the @mention linked to the startapp deep link", api.text)
 	}
 	if strings.Contains(api.replyMarkup, "web_app") {
 		t.Errorf("reply_markup = %q has a web_app button; want a url button", api.replyMarkup)

ui/src/components/Header.svelte

@@ -81,7 +81,7 @@
     display: flex;
     align-items: center;
     gap: var(--gap);
-    padding: 10px var(--pad);
+    padding: 5px var(--pad);
   }
   h1 {
     font-size: 1.05rem;
@@ -139,15 +139,15 @@
        back chevron is hidden), so min-height (the nav-band height) doesn't bind. Without the
        (removed) hamburger that content shrank and the bar sat flush under Telegram's native nav
        band. So **padding-top** is the lever: it drops the title clear of the band — the notch
-       plus a **10px** gap (was 6). A fixed px (not rem/em) gap so the clearance from Telegram's
-       native controls stays constant if the user scales up the font (the title then grows
-       downward and the bar with it). (Owner-tunable: the 10px.) */
+       plus an **8px** gap (halved from 16). A fixed px (not rem/em) gap so the clearance from
+       Telegram's native controls stays constant if the user scales up the font (the title then
+       grows downward and the bar with it). (Owner-tunable: the 8px.) */
     min-height: var(--tg-content-top);
     box-sizing: border-box;
     align-items: center;
     justify-content: center;
-    padding-top: calc(var(--tg-safe-top) + 16px);
-    padding-bottom: 6px;
+    padding-top: calc(var(--tg-safe-top) + 8px);
+    padding-bottom: 3px;
   }
   :global(html.tg-fullscreen) .spacer {
     display: none;

ui/src/lib/i18n/en.ts

@@ -247,7 +247,7 @@ export const en = {
   'friends.redeem': 'Add',
   'friends.copy': 'Copy',
   'friends.codeCopied': 'Code copied.',
-  'friends.shareTelegram': 'Share via Telegram',
+  'friends.shareTelegram': 'Share',
   'friends.inviteText': "Let's play Scrabble!",
   'friends.linkCopied': 'Link copied.',
   'friends.selfInvite': "Hopefully you've been friends with yourself for a while ☺️",

ui/src/lib/i18n/ru.ts

@@ -248,7 +248,7 @@ export const ru: Record<MessageKey, string> = {
   'friends.redeem': 'Добавить',
   'friends.copy': 'Копировать',
   'friends.codeCopied': 'Код скопирован.',
-  'friends.shareTelegram': 'Поделиться через Telegram',
+  'friends.shareTelegram': 'Поделиться',
   'friends.inviteText': 'Давай играть в Эрудит!',
   'friends.linkCopied': 'Ссылка скопирована.',
   'friends.selfInvite': 'Надеюсь, что с собой Вы уже давно дружите ☺️',

ui/src/screens/Friends.svelte

@@ -182,7 +182,7 @@
             {t('friends.codeHint')} · {t('friends.codeExpires', { time: codeTime(code.expiresAtUnix) })}
           </span>
           {#if tg}
-            <button type="button" class="link tgshare" onclick={() => shareInvite(tg)}>{t('friends.shareTelegram')}</button>
+            <button type="button" class="link" onclick={() => shareInvite(tg)}>{t('friends.shareTelegram')}</button>
           {/if}
         </div>
       {:else}