feat: Multi-guild support implementation

- Added multi-guild support with comma-separated AllowedGuildIDs config
- Per-guild embed tracking with isolated state
- Per-server action locking to prevent race conditions across guilds
- Cross-guild embed updates after power actions
- Debug logging for embed update triggers
- Fixed resource usage field formatting (brackets now properly closed)
- Updated config.ini.sample, generate_config.py for backward compatibility
- Updated README.md with multi-guild documentation
- Updated tests for multi-guild support

generate_config.py

@@ -4,27 +4,47 @@ from pathlib import Path
 from dotenv import load_dotenv
 
 
+REQUIRED_VARS = [
+    'DISCORD_TOKEN',
+    'ALLOWED_GUILD_ID',  # Legacy
+    'ALLOWED_GUILD_IDS',  # New
+    'PANEL_URL',
+    'CLIENT_API_KEY',
+    'APPLICATION_API_KEY'
+]
+
+
 def validate_env_vars():
     """Validate that required environment variables are set and non-empty."""
-    required_vars = [
-        'DISCORD_TOKEN',
-        'ALLOWED_GUILD_ID',
-        'PANEL_URL',
-        'CLIENT_API_KEY',
-        'APPLICATION_API_KEY'
-    ]
+    # Check for either legacy or new guild ID variable
+    has_guild_id = bool(os.getenv('ALLOWED_GUILD_ID'))
+    has_guild_ids = bool(os.getenv('ALLOWED_GUILD_IDS'))
     
-    missing_vars = [var for var in required_vars if not os.getenv(var)]
+    if not has_guild_id and not has_guild_ids:
+        raise ValueError(
+            "Missing required environment variable: ALLOWED_GUILD_IDS (or legacy ALLOWED_GUILD_ID)"
+        )
+    
+    # Check other required vars
+    missing_vars = [
+        var for var in ['DISCORD_TOKEN', 'PANEL_URL', 'CLIENT_API_KEY', 'APPLICATION_API_KEY']
+        if not os.getenv(var)
+    ]
     if missing_vars:
         raise ValueError(f"Missing required environment variables: {', '.join(missing_vars)}")
 
 
 def get_env_config():
     """Extract configuration from environment variables."""
+    # Support both new ALLOWED_GUILD_IDS and legacy ALLOWED_GUILD_ID
+    allowed_guild_ids = os.getenv('ALLOWED_GUILD_IDS', '')
+    if not allowed_guild_ids:
+        allowed_guild_ids = os.getenv('ALLOWED_GUILD_ID', '')
+    
     return {
         'Discord': {
             'Token': os.getenv('DISCORD_TOKEN'),
-            'AllowedGuildID': os.getenv('ALLOWED_GUILD_ID')
+            'AllowedGuildIDs': allowed_guild_ids
         },
         'Pterodactyl': {
             'PanelURL': os.getenv('PANEL_URL'),
@@ -43,8 +63,18 @@ def configs_match(existing_config, env_config):
             if env_value is None:
                 # Environment variable not set, don't require match
                 continue
-            existing_value = existing_config.get(section, key, fallback=None)
-            if existing_value != env_value:
+            # For AllowedGuildIDs, also check legacy AllowedGuildID key
+            check_keys = [key]
+            if key == 'AllowedGuildIDs':
+                check_keys.append('AllowedGuildID')
+            
+            matched = False
+            for check_key in check_keys:
+                existing_value = existing_config.get(section, check_key, fallback=None)
+                if existing_value == env_value:
+                    matched = True
+                    break
+            if not matched:
                 return False
     return True