Cross-platform support: Windows and Linux

[soulkyiro]

Summary

Add Windows and Linux support to LiteLLM Relay to enable enterprise-wide deployments in organizations with heterogeneous device fleets.

Motivation

Currently Relay only supports macOS. Many corporate environments run mixed OS estates — particularly Windows for business users and Linux for engineering/server workstations. Without cross-platform support, IT teams cannot enforce a single AI governance layer across all employee devices, leaving significant gaps in shadow AI detection and AI tool auto-configuration.

Scope

Windows

• Installer (MSI or EXE) deployable via Group Policy, SCCM, or Intune
• Auto-configuration paths for AI tools on Windows (e.g., %APPDATA% paths for Claude Desktop, Codex)
• Service-based background process (Windows Service) replacing LaunchAgent/LaunchDaemon
• CA trust integration with the Windows Certificate Store
• PAC file / system proxy configuration via registry or GPO
• System tray app equivalent of the macOS menu bar app

Linux

• Installer (.deb, .rpm, or universal shell script)
• systemd unit files for periodic auto-configuration and proxy service
• Auto-configuration for CLI tools (Claude Code, Codex) in ~/.config or $XDG_CONFIG_HOME
• CA trust via update-ca-certificates / trust anchor
• Environment-based proxy configuration (http_proxy, https_proxy)

Shared

• Abstraction layer for OS-specific paths, service management, and CA trust
• Cross-platform CI (GitHub Actions matrix: macOS, Windows, Linux)
• MDM documentation for Windows-centric tools (Intune, SCCM) and Linux config management (Ansible, Chef, Puppet)

Enterprise context

Corporate IT teams typically need:

• Centralized deployment via MDM/config management
• Silent install with no user interaction
• Per-machine or per-user configuration via policy
• Unattended updates
• Compatibility with corporate proxy chains and DLP tools

Acceptance criteria

• relay binary compiles and runs on Windows (x86_64) and Linux (x86_64, aarch64)
• AI tool auto-configuration works for at least Claude Code and Codex on all three platforms
• Install scripts/packages support silent, unattended deployment
• CA trust is established on each platform without manual steps
• CI pipeline tests all three platforms
• MDM/deployment documentation covers at least one tool per platform (Intune for Windows, Ansible for Linux)