Remove LoRa/ISM mode (redundant with 433MHz)

The LoRa mode was removed because:
- rtl_433 cannot decode actual LoRa (CSS modulation)
- The 433MHz mode already handles ISM band devices
- True LoRa decoding requires specialized tools like gr-lora

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

app.py

@@ -103,11 +103,6 @@ satellite_process = None
 satellite_queue = queue.Queue(maxsize=QUEUE_MAX_SIZE)
 satellite_lock = threading.Lock()
 
-# LoRa/ISM band
-lora_process = None
-lora_queue = queue.Queue(maxsize=QUEUE_MAX_SIZE)
-lora_lock = threading.Lock()
-
 # ============================================
 # GLOBAL STATE DICTIONARIES
 # ============================================
@@ -309,7 +304,6 @@ def health_check() -> Response:
             'adsb': adsb_process is not None and (adsb_process.poll() is None if adsb_process else False),
             'wifi': wifi_process is not None and (wifi_process.poll() is None if wifi_process else False),
             'bluetooth': bt_process is not None and (bt_process.poll() is None if bt_process else False),
-            'lora': lora_process is not None and (lora_process.poll() is None if lora_process else False),
         },
         'data': {
             'aircraft_count': len(adsb_aircraft),
@@ -323,7 +317,7 @@ def health_check() -> Response:
 @app.route('/killall', methods=['POST'])
 def kill_all() -> Response:
     """Kill all decoder and WiFi processes."""
-    global current_process, sensor_process, wifi_process, adsb_process, lora_process
+    global current_process, sensor_process, wifi_process, adsb_process
 
     # Import adsb module to reset its state
     from routes import adsb as adsb_module
@@ -357,10 +351,6 @@ def kill_all() -> Response:
         adsb_process = None
         adsb_module.adsb_using_service = False
 
-    # Reset LoRa state
-    with lora_lock:
-        lora_process = None
-
     return jsonify({'status': 'killed', 'processes': killed})