feat(telegram): Unify Trezorerie button (Casa + Banca combined)

- Replace separate [Trezorerie Casa] and [Trezorerie Banca] buttons
  with single unified [Trezorerie] button in main menu
- Add format_treasury_combined_response() formatter showing:
  - Grand total (Sold Trezorerie)
  - Casa section with total + all accounts
  - Banca section with total + all accounts
- Compact menu layout: Row 2 [Sold Companie][Trezorerie],
  Row 3 [Sold Clienti][Sold Furnizori], Row 4 [Evolutie Incasari]
- Use Romanian number format (period as thousands separator)

Also includes:
- Oracle pool: Support both SERVICE_NAME and SID connections
  (ORACLE_SERVICE_NAME takes priority over ORACLE_SID)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/modules/telegram/bot/handlers.py

@@ -1483,6 +1483,37 @@ async def handle_menu_callback(query, telegram_user_id: int, callback_data: str)
             is_callback=True
         )
 
+    elif action == "trezorerie":
+        # Trezorerie unified (Casa + Banca combined)
+        from backend.modules.telegram.bot.helpers import get_treasury_breakdown_split
+        treasury_data = await get_treasury_breakdown_split(company['id'], jwt_token)
+
+        from backend.modules.telegram.bot.formatters import format_treasury_combined_response, add_performance_footer
+        from backend.modules.telegram.bot.menus import create_action_buttons, format_response_with_company
+
+        content = format_treasury_combined_response(treasury_data)
+        response = format_response_with_company(content, company['name'])
+
+        # Add performance footer if cache metadata is available
+        if 'cache_hit' in treasury_data and 'response_time_ms' in treasury_data:
+            cache_hit = treasury_data['cache_hit']
+            response_time_ms = treasury_data['response_time_ms']
+            cache_source = treasury_data.get('cache_source', None)
+            response = add_performance_footer(response, cache_hit, response_time_ms, cache_source)
+
+        keyboard = create_action_buttons("trezorerie", show_export=False, show_refresh=False)
+
+        try:
+            await query.edit_message_text(
+                response,
+                reply_markup=keyboard,
+                parse_mode=ParseMode.MARKDOWN
+            )
+        except Exception as e:
+            # Ignore "Message is not modified" error
+            if "Message is not modified" not in str(e):
+                raise
+
     elif action == "casa":
         # Trezorerie casa
         from backend.modules.telegram.bot.helpers import get_treasury_breakdown_split