The installation script was displaying multiple IP addresses in the final success message when both ethernet and WiFi interfaces were active. Users reported seeing misleading messages like:

==========================================================================

    ioBroker was installed successfully
    Open http://192.168.2.13 192.168.2.167:8081 in a browser and start configuring!

==========================================================================

Instead of the expected single IP:

==========================================================================

    ioBroker was installed successfully
    Open http://192.168.2.13:8081 in a browser and start configuring!

==========================================================================

The issue occurred in the detect_ip_address() function in installer_library.sh where edge cases could cause the head -1 command to not properly limit the output to a single IP address, resulting in multiple IPs being included in the final message.

Solution:
Enhanced the detect_ip_address() function with an additional robust filtering step that ensures only one IP address is returned by removing potential newlines and extra whitespace:

# Ensure we return only the first IP address, removing any potential newlines or extra content
IP=$(echo "$IP" | head -1 | tr -d '\n\r' | awk '{print $1}')

Changes:

• Updated detect_ip_address() function in installer_library.sh with additional IP filtering
• Bumped installer version to 2025-09-18
• Added changelog entry documenting the fix
• Rebuilt distribution scripts to include the fix

The fix is minimal and maintains backward compatibility while ensuring users always see a clean, single IP address in the final installation message regardless of their network configuration.

Fixes #484.

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