feat: Add service UUID filter to BLE scanner for more efficient scanning

Filter BLE scanner to only detect devices advertising the Reticulum service
UUID, reducing noise from non-Reticulum BLE devices and improving scan efficiency.

Changes:
- Pass service_uuids parameter to BleakScanner initialization
- Only detects devices with our service UUID (37145b00-442d-4a94-917f-8f42c5da28e3)
- Reduces callback invocations for irrelevant BLE devices

Benefits:
- More efficient scanning (fewer devices to process)
- Less CPU usage processing non-Reticulum devices
- Faster peer discovery

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

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

src/RNS/Interfaces/linux_bluetooth_driver.py

@@ -653,7 +653,10 @@ class LinuxBluetoothDriver(BLEDriverInterface):
             scan_time = 1.0
 
         self._log(f"🔍 Starting BleakScanner (power_mode={self.power_mode}, scan_time={scan_time}s, service_uuid={self.service_uuid})", "EXTRA")
-        scanner = BleakScanner(detection_callback=detection_callback)
+        scanner = BleakScanner(
+            detection_callback=detection_callback,
+            service_uuids=[self.service_uuid] if self.service_uuid else None
+        )
 
         try:
             self._log("🔍 Calling scanner.start()", "EXTRA")