Problem Statement

Currently, toolhive's secrets management relies on the zalando/go-keyring library, which works excellently on:

• macOS: Native Keychain integration
• Linux Desktop: D-Bus Secret Service (GNOME Keyring, KDE Wallet)

However, it fails on headless Linux systems (servers, containers, WSL) where D-Bus is unavailable. My suggestion to use keyctl as a fallback broadens Toolhive's compatibility from being limited to "desktop Linux only" to supporting "any Linux system," making it cross-platform.