Add comprehensive documentation and fix authentication config paths

- Add detailed README.md with installation, usage, and development guide
- Add CONFIG.md with complete configuration documentation
- Update connection and SASL authentication to use nested config paths
- Fix server password and SASL username/password config access
- Add config validation test script (test_config.py)
- Clean up config.json (removed invalid JSON comments)
- Improve error handling for config arrays and null values

test_config.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+
+import json
+import os
+
+def test_config():
+    """Test the config structure and values"""
+    config_path = 'config.json'
+    
+    if not os.path.exists(config_path):
+        print("❌ Config file not found")
+        return
+    
+    with open(config_path, 'r') as f:
+        config = json.load(f)
+    
+    print("🧪 Testing configuration structure...")
+    
+    # Test connection settings
+    connection = config.get('connection', {})
+    print(f"🌐 Server: {connection.get('server')}")
+    print(f"🔌 Port: {connection.get('port')}")
+    print(f"🤖 Nick: {connection.get('nick')}")
+    print(f"🔒 SSL: {connection.get('ssl')}")
+    
+    # Check if password is set (not default)
+    password = connection.get('password')
+    password_set = password and password != "your_iline_password_here"
+    print(f"🔑 Password configured: {'Yes' if password_set else 'No (default placeholder)'}")
+    
+    # Test SASL settings
+    sasl = config.get('sasl', {})
+    print(f"🔐 SASL enabled: {sasl.get('enabled')}")
+    print(f"👤 SASL username: {sasl.get('username')}")
+    
+    # Check if SASL password is set (not default)
+    sasl_password = sasl.get('password')
+    sasl_password_set = sasl_password and sasl_password != "duckhunt//789//"
+    print(f"🗝️ SASL password configured: {'Yes' if sasl_password_set else 'No (default placeholder)'}")
+    
+    # Test channels
+    channels = connection.get('channels', [])
+    print(f"📺 Channels to join: {channels}")
+    
+    print("\n✅ Configuration structure looks good!")
+    
+    if not password_set:
+        print("⚠️ Warning: Server password is still set to placeholder value")
+        print("   Update 'connection.password' if your server requires authentication")
+    
+    if sasl.get('enabled') and not sasl_password_set:
+        print("⚠️ Warning: SASL is enabled but password is still placeholder")
+        print("   Update 'sasl.password' with your actual NickServ password")
+
+if __name__ == "__main__":
+    test_config()