Reorganize API keys under [External_Data] section

- Move n2yo_api_key and airnow_api_key from [Solar_Config] to [External_Data]
- Update code references to use [External_Data] section instead of [Solar_Config]
- Update config.ini.example to match the new organization
- Improve error message to specify the correct config section
- This provides better organization with all external API keys in one place

config.ini.example

@@ -152,6 +152,14 @@ tide_api_key =
 # Tide update interval in seconds (future feature)
 tide_update_interval = 1800
 
+# N2YO API key for satellite pass information
+# Get free key at: https://www.n2yo.com/login/
+n2yo_api_key = 
+
+# AirNow API key for AQI data
+# Get free key at: https://docs.airnowapi.org/
+airnow_api_key = 
+
 [Weather]
 # Default state for city name disambiguation
 # When users type "wx seattle", it will search for "seattle, WA, USA"
@@ -174,11 +182,3 @@ url_timeout = 10
 # true: Use 24-hour UTC format
 # false: Use 12-hour local format
 use_zulu_time = false
-
-# N2YO API key for satellite pass information
-# Get free key at: https://www.n2yo.com/login/
-n2yo_api_key = 
-
-# AirNow API key for AQI data
-# Get free key at: https://www.airnowapi.org/
-airnow_api_key = 

modules/commands/aqi_command.py

@@ -37,7 +37,7 @@ class AqiCommand(BaseCommand):
         self.default_state = self.bot.config.get('Weather', 'default_state', fallback='WA')
         
         # Get AirNow API key from config
-        self.api_key = self.bot.config.get('Solar_Config', 'airnow_api_key', fallback='')
+        self.api_key = self.bot.config.get('External_Data', 'airnow_api_key', fallback='')
         if not self.api_key:
             self.logger.warning("AirNow API key not configured in config.ini")
         
@@ -283,7 +283,7 @@ class AqiCommand(BaseCommand):
         """Get AQI data for a location (zipcode, city, or coordinates)"""
         try:
             if not self.api_key:
-                return "AirNow API key not configured. Please add airnow_api_key to config.ini"
+                return "AirNow API key not configured. Please add airnow_api_key to [External_Data] section in config.ini"
             
             # Convert location to lat/lon
             if location_type == "zipcode":

modules/solar_conditions.py

@@ -353,7 +353,7 @@ def get_next_satellite_pass(satellite, lat=None, lon=None):
             lon = get_config_value('Solar_Config', 'default_longitude', DEFAULT_LONGITUDE)
         
         # API URL
-        n2yo_key = get_config_value('Solar_Config', 'n2yo_api_key', DEFAULT_N2YO_API_KEY)
+        n2yo_key = get_config_value('External_Data', 'n2yo_api_key', DEFAULT_N2YO_API_KEY)
         if not n2yo_key:
             logger.error("System: Missing API key free at https://www.n2yo.com/login/")
             return "not configured, bug your sysop"