Function opencode_config_path

src/agents/opencode.rs:168–176

Returns the path to opencode config (global). Prefers `$HOME/.config/opencode/opencode.json`. Falls back to `$XDG_CONFIG_HOME/opencode/opencode.json` only when the XDG path is under `home` (so tests with temp-dir homes are never polluted by the real user's environment).

(home: &Path)

/// is under `home` (so tests with temp-dir homes are never polluted by
/// the real user's environment).
fn opencode_config_path(home: &Path) -> std::path::PathBuf {
    if let Ok(xdg) = std::env::var("XDG_CONFIG_HOME") {
        let xdg_path = std::path::PathBuf::from(&xdg);
        if xdg_path.starts_with(home) {
            return xdg_path.join("opencode/opencode.json");
        }
    }
    home.join(".config/opencode/opencode.json")
}

/// Returns the path to the global AGENTS.md prompt file.
fn opencode_prompt_path(home: &Path) -> std::path::PathBuf {