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>

shared/database/oracle_pool.py

@@ -40,18 +40,35 @@ class OraclePool:
                     getmode=oracledb.POOL_GETMODE_WAIT
                 )
             else:
-                # Use individual parameters (host, port, sid)
-                self._pool = oracledb.create_pool(
-                    user=config.get('user', os.getenv('ORACLE_USER')),
-                    password=config.get('password', os.getenv('ORACLE_PASSWORD')),
-                    host=config.get('host', os.getenv('ORACLE_HOST', 'localhost')),
-                    port=config.get('port', int(os.getenv('ORACLE_PORT', '1526'))),
-                    sid=config.get('sid', os.getenv('ORACLE_SID', 'ROA')),
-                    min=config.get('min_connections', 2),
-                    max=config.get('max_connections', 10),
-                    increment=config.get('increment', 1),
-                    getmode=oracledb.POOL_GETMODE_WAIT
-                )
+                # Use individual parameters (host, port, service_name or sid)
+                # Prefer SERVICE_NAME over SID (more modern Oracle approach)
+                service_name = config.get('service_name', os.getenv('ORACLE_SERVICE_NAME'))
+                sid = config.get('sid', os.getenv('ORACLE_SID'))
+
+                pool_params = {
+                    'user': config.get('user', os.getenv('ORACLE_USER')),
+                    'password': config.get('password', os.getenv('ORACLE_PASSWORD')),
+                    'host': config.get('host', os.getenv('ORACLE_HOST', 'localhost')),
+                    'port': config.get('port', int(os.getenv('ORACLE_PORT', '1526'))),
+                    'min': config.get('min_connections', 2),
+                    'max': config.get('max_connections', 10),
+                    'increment': config.get('increment', 1),
+                    'getmode': oracledb.POOL_GETMODE_WAIT
+                }
+
+                # Use service_name if available, otherwise fall back to sid
+                if service_name:
+                    pool_params['service_name'] = service_name
+                    logger.info(f"Using SERVICE_NAME: {service_name}")
+                elif sid:
+                    pool_params['sid'] = sid
+                    logger.info(f"Using SID: {sid}")
+                else:
+                    # Default fallback
+                    pool_params['service_name'] = 'ROA'
+                    logger.info("Using default SERVICE_NAME: ROA")
+
+                self._pool = oracledb.create_pool(**pool_params)
             logger.info(f"Oracle pool created with {self._pool.opened} connections")
     
     @asynccontextmanager