fix: Gittea write config to XDG_CONFIG_HOME when set

[rr3khan]

Overview

On macOS with $XDG_CONFIG_HOME exported, op plugin init tea writes tea's config to a path tea never reads, so every tea command fails with Error: no available login.

The plugin resolves the config path with os.UserConfigDir(), which ignores $XDG_CONFIG_HOME on darwin, while tea resolves it through adrg/xdg, which prefers $XDG_CONFIG_HOME on every platform. When the variable is set (common for users syncing dotfiles across Linux and macOS), the two diverge: the plugin writes to ~/Library/Application Support/tea/config.yml while tea reads from $XDG_CONFIG_HOME/tea/config.yml.

ConfigPath() now checks $XDG_CONFIG_HOME first and falls back to os.UserConfigDir(), matching tea's own resolution order. Added tests covering both branches.

Type of change

• Created a new plugin
• Improved an existing plugin
• Fixed a bug in an existing plugin
• Improved contributor utilities or experience

Related Issue(s)

• Resolves: [gitea] Plugin writes config to a path tea won't read when $XDG_CONFIG_HOME is set #601

How To Test

export XDG_CONFIG_HOME=$HOME/.config
op plugin init tea   # link a Gitea personal access token
tea pulls            # previously: Error: no available login

Without $XDG_CONFIG_HOME set, behavior is unchanged (os.UserConfigDir() fallback). go test ./plugins/gitea/... and make gitea/validate pass.

Changelog

The Gitea plugin now writes tea's configuration to the location tea reads when XDG_CONFIG_HOME is set.