Add reverse proxy IP header support for web server logging

[MorquinDevlar]

Added:

• getClientIP helper function to extract real client IPs from proxy headers
• X-Real-IP header parsing (higher priority)
• X-Forwarded-For header parsing with comma-separated IP support
• Security check to only trust headers from localhost connections

Changed:

• Web request logging to use getClientIP instead of r.RemoteAddr
• Log output now shows real client IPs when behind trusted reverse proxy

[Copilot]

Pull Request Overview

This PR adds reverse proxy IP header support for web server logging and introduces secure telnet connection tracking capabilities. The main purpose is to properly log real client IP addresses when the web server is behind a trusted reverse proxy, and to add infrastructure for supporting TLS-enabled telnet connections.

Key changes:

• Added getClientIP function to extract real client IPs from X-Real-IP and X-Forwarded-For headers when requests come from localhost
• Added secure telnet port configuration and connection type tracking
• Enhanced online user display to show connection types (Web, Telnet, TLS)

Reviewed Changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
internal/web/web.go	Implements getClientIP function and updates logging to use real client IPs
internal/configs/config.network.go	Adds SecureTelnetPort and SecureTelnetLocalPort configuration fields
internal/users/userrecord.go	Adds connection type detection logic for TLS connections
internal/users/onlineinfo.go	Adds ConnectionType field to track connection method
internal/connections/connections.go	Adds GetConnectionPort function for port retrieval
internal/connections/connectiondetails.go	Implements GetLocalPort method to extract local port from connections
main.go	Adds secure telnet local port listening logic
world.go	Updates stats collection to include secure telnet ports
internal/web/stats.go	Adds SecureTelnetPorts field to stats structure
_datafiles/html/public/online.html	Adds Connection column to online users table
_datafiles/html/public/index.html	Updates homepage to display secure telnet ports
_datafiles/config.yaml	Adds configuration documentation for secure telnet ports