Add referral system and user balance tracking

Introduce balance field to User model with Alembic migration. Add
referral menu, admin /refpay command, and deep link sharing. Update
Dockerfile to multi-stage build and add Postgres service to compose.
Fix deep link parsing logic and conditional proxy initialization.

texts.py

@@ -1,11 +1,11 @@
 from misc.utils import fetch_quote
 from db.models.tickets import TicketStatus
 
-
 # ============================================================
 # PREMIUM EMOJI
 # ============================================================
 
+
 class PremiumEmoji:
     def __init__(self, emoji_id: int, emoji: str):
         self.emoji_id = emoji_id
@@ -16,11 +16,11 @@ class PremiumEmoji:
 
 
 # — Иконки бота
-MALENIA_LOGO    = PremiumEmoji(5265053829522562789, "☀️")
-MALENIA_HEART   = PremiumEmoji(5276516908257025723, "❤️")
-MALENIA_LINK    = PremiumEmoji(5276012730636082950, "🔗")
-MALENIA_COINS   = PremiumEmoji(5276298354551199712, "🪙")
-MALENIA_LOCKED  = PremiumEmoji(5276346642868508688, "🔒")
+MALENIA_LOGO = PremiumEmoji(5265053829522562789, "☀️")
+MALENIA_HEART = PremiumEmoji(5276516908257025723, "❤️")
+MALENIA_LINK = PremiumEmoji(5276012730636082950, "🔗")
+MALENIA_COINS = PremiumEmoji(5276298354551199712, "🪙")
+MALENIA_LOCKED = PremiumEmoji(5276346642868508688, "🔒")
 MALENIA_SUPPORT = PremiumEmoji(5275968088746006467, "🎧")
 
 
@@ -29,8 +29,8 @@ MALENIA_SUPPORT = PremiumEmoji(5275968088746006467, "🎧")
 # ============================================================
 
 TICKET_STATUS_EMOJIS = {
-    TicketStatus.CLOSED.value:  "🔴",
-    TicketStatus.OPEN.value:    "🟢",
+    TicketStatus.CLOSED.value: "🔴",
+    TicketStatus.OPEN.value: "🟢",
     TicketStatus.PENDING.value: "🟡",
 }
 
@@ -40,18 +40,18 @@ TICKET_STATUS_EMOJIS = {
 # ============================================================
 
 # — Иконки статусов
-STATUS_ICON_ACTIVE   = "🟢"
+STATUS_ICON_ACTIVE = "🟢"
 STATUS_ICON_DISABLED = "🔴"
-STATUS_ICON_EXPIRED  = "🟡"
-STATUS_ICON_LIMITED  = "🟠"
-STATUS_ICON_UNKNOWN  = "⚪"
+STATUS_ICON_EXPIRED = "🟡"
+STATUS_ICON_LIMITED = "🟠"
+STATUS_ICON_UNKNOWN = "⚪"
 
 # — Тексты статусов
-STATUS_ACTIVE   = "Активна"
+STATUS_ACTIVE = "Активна"
 STATUS_DISABLED = "Отключена"
-STATUS_EXPIRED  = "Истекла"
-STATUS_LIMITED  = "Превышен лимит трафика"
-STATUS_UNKNOWN  = "Неизвестен"
+STATUS_EXPIRED = "Истекла"
+STATUS_LIMITED = "Превышен лимит трафика"
+STATUS_UNKNOWN = "Неизвестен"
 
 
 # ============================================================
@@ -60,11 +60,11 @@ STATUS_UNKNOWN  = "Неизвестен"
 
 # — Дни до истечения подписки
 DAYS_LEFT_POSITIVE = "{days} дн."
-DAYS_LEFT_EXPIRED  = "истекла {days} дн. назад"
-DAYS_LEFT_TODAY    = "истекает сегодня"
+DAYS_LEFT_EXPIRED = "истекла {days} дн. назад"
+DAYS_LEFT_TODAY = "истекает сегодня"
 
 # — Username
-NO_USERNAME      = "нет username"
+NO_USERNAME = "нет username"
 USERNAME_DISPLAY = "@{username}"
 
 # — Internal Squads
@@ -74,9 +74,9 @@ NO_SQUADS = "нет"
 UNLIMITED_HWID = "без ограничений"
 
 # — Трафик
-NO_TRAFFIC_LIMIT   = "без ограничений"
+NO_TRAFFIC_LIMIT = "без ограничений"
 TRAFFIC_WITH_LIMIT = "{used} / {limit}"
-TRAFFIC_NO_LIMIT   = "{used}"
+TRAFFIC_NO_LIMIT = "{used}"
 
 # — Прочее
 NOTHING_PLACEHOLDER = "🍃"
@@ -109,6 +109,18 @@ CONTEXT_REINITIATED = (
 )
 
 
+# ============================================================
+# РЕФЕРАЛЬНАЯ СИСТЕМА
+# ============================================================
+
+REFERALS_MENU = (
+    "<b>👥 Реферальная система</b>\n\n"
+    f"<b>{MALENIA_COINS} Ваш реферальный баланс:</b> "
+    "<code>{balance}₽</code>\n"
+    f"<b>{MALENIA_LINK} Ваша реферальная ссылка:</b> "
+    "<code>{link}</code>"
+)
+
 # ============================================================
 # ОФОРМЛЕНИЕ ПОДПИСКИ
 # ============================================================
@@ -126,8 +138,7 @@ WHITELISTS_ALREADY_ON = "уже включены!"
 TEMP_SUPPORT_FORM = "обратитесь в поддержку, прикрепив текст ниже:\n\n"
 
 CHECKOUT_PAYMENT_CHOICE = (
-    "в поддержку чирканите епта там всё обьяснят\n"
-    + TEMP_SUPPORT_FORM
+    "в поддержку чирканите епта там всё обьяснят\n" + TEMP_SUPPORT_FORM
 )
 
 
@@ -159,6 +170,7 @@ _SUPPORT_USER_DESCRIPTION = (
     "👤 <b>Имя:</b> {full_name}\n"
     "🔗 <b>Username:</b> {username_display}\n"
     "🆔 <b>Telegram ID:</b> <code>{telegram_id}</code>\n\n"
+    "💰 <b>Реферальный баланс:</b> <code>{balance}</code>"
 )
 
 _DIVIDER = "━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n\n"
@@ -171,7 +183,8 @@ _DIVIDER = "━━━━━━━━━━━━━━━━━━━━━━
 SUPPORT_SUBSCRIPTION = (
     "<b>🎫 ЗАЯВКА НА ПОКУПКУ:</b>\n\n"
     + _SUPPORT_USER_DESCRIPTION
-    + "\n" + _DIVIDER
+    + "\n"
+    + _DIVIDER
     + "🗓️ Подписка на <b>{duration}</b> месяцев.\n"
     + "📱 Количество устройств: <b>{devices}</b>\n"
     + "🏳️ Белые списки: <b>{whitelist_description}</b>\n\n"
@@ -181,7 +194,8 @@ SUPPORT_SUBSCRIPTION = (
 ADMIN_TICKET_WITH_RW = (
     "🎫 <b>ТИКЕТ T-{ticket_number:04d}</b>\n\n"
     + _SUPPORT_USER_DESCRIPTION
-    + "\n" + _DIVIDER
+    + "\n"
+    + _DIVIDER
     + "📋 <b>ПОДПИСКА REMNAWAVE</b>\n\n"
     + "{status_icon} <b>Статус:</b> {status}\n"
     + "📅 <b>Истекает:</b> {expire_date}\n"
@@ -211,5 +225,6 @@ ADMIN_STANDARD_FALLBACK = (
 # ВСПОМОГАТЕЛЬНЫЕ ФУНКЦИИ
 # ============================================================
 
+
 def build_main_menu_text(link: str) -> str:
-    return MAIN_MENU.format(quote=fetch_quote(), link=link)
+    return MAIN_MENU.format(quote=fetch_quote(), link=link)