feat: add button style and emoji support for cabinet mode (Bot API 9.4)

- Upgrade aiogram to 3.25.0 for style/icon_custom_emoji_id support
- Add CABINET_BUTTON_STYLE config for global color override
- Per-section default styles: subscription (green), balance (blue),
  referral (green), admin (red), home (blue)
- Style priority: explicit > CABINET_BUTTON_STYLE > per-section default
- Add icon_custom_emoji_id pass-through for Premium bot owners
- Admin panel setting for button style with color picker

app/config.py

@@ -517,6 +517,8 @@ class Settings(BaseSettings):
     KASSA_AI_PAYMENT_SYSTEM_ID: int = 44
 
     MAIN_MENU_MODE: str = 'default'  # 'default' | 'cabinet'
+    # Стиль кнопок Cabinet: primary (синий), success (зелёный), danger (красный), '' (по умолчанию для каждой секции)
+    CABINET_BUTTON_STYLE: str = ''
     CONNECT_BUTTON_MODE: str = 'miniapp_subscription'
     MINIAPP_CUSTOM_URL: str = ''
     MINIAPP_STATIC_PATH: str = 'miniapp'