Remove Iridium (demo-only) and add version display

- Remove Iridium satellite decoding feature (was placeholder/demo only)
  - Delete routes/iridium.py
  - Remove Iridium UI elements from index.html
  - Remove Iridium CSS styles
  - Remove Iridium dependencies and logger
  - Clean up SDR docstrings mentioning Iridium

- Add version number display (fixes #31)
  - Add VERSION constant to config.py
  - Add --version / -V CLI flag to intercept.py
  - Display version badge in web UI header

utils/__init__.py

@@ -19,7 +19,6 @@ from .logging import (
     bluetooth_logger,
     adsb_logger,
     satellite_logger,
-    iridium_logger,
 )
 from .validation import (
     escape_html,

utils/dependencies.py

@@ -189,18 +189,6 @@ TOOL_DEPENDENCIES = {
             }
         }
     },
-    'iridium': {
-        'name': 'Iridium Monitoring',
-        'tools': {
-            'iridium-extractor': {
-                'required': False,
-                'description': 'Iridium burst extractor',
-                'install': {
-                    'manual': 'https://github.com/muccc/gr-iridium'
-                }
-            }
-        }
-    },
     'sdr_hardware': {
         'name': 'SDR Hardware Support',
         'tools': {

utils/logging.py

@@ -27,4 +27,3 @@ wifi_logger = get_logger('intercept.wifi')
 bluetooth_logger = get_logger('intercept.bluetooth')
 adsb_logger = get_logger('intercept.adsb')
 satellite_logger = get_logger('intercept.satellite')
-iridium_logger = get_logger('intercept.iridium')

utils/sdr/base.py

@@ -83,7 +83,7 @@ class CommandBuilder(ABC):
         squelch: Optional[int] = None
     ) -> list[str]:
         """
-        Build FM demodulation command (for pager, iridium).
+        Build FM demodulation command (for pager decoding).
 
         Args:
             device: The SDR device to use

utils/sdr/hackrf.py

@@ -65,7 +65,7 @@ class HackRFCommandBuilder(CommandBuilder):
         """
         Build SoapySDR rx_fm command for FM demodulation.
 
-        For pager decoding and iridium capture with HackRF.
+        For pager decoding with HackRF.
         """
         device_str = self._build_device_string(device)
 

utils/sdr/limesdr.py

@@ -46,7 +46,7 @@ class LimeSDRCommandBuilder(CommandBuilder):
         """
         Build SoapySDR rx_fm command for FM demodulation.
 
-        For pager decoding and iridium capture with LimeSDR.
+        For pager decoding with LimeSDR.
         """
         device_str = self._build_device_string(device)
 

utils/sdr/rtlsdr.py

@@ -40,7 +40,7 @@ class RTLSDRCommandBuilder(CommandBuilder):
         """
         Build rtl_fm command for FM demodulation.
 
-        Used for pager decoding and iridium capture.
+        Used for pager decoding.
         """
         cmd = [
             'rtl_fm',