use std::env;
use std::path::PathBuf;

pub fn agent_rw_paths() -> Vec<PathBuf> {
    let home = match env::var("HOME") {
        Ok(h) => PathBuf::from(h),
        Err(_) => return vec![],
    };

    let candidates = [
        env::var("CLAUDE_CONFIG_DIR")
            .map(PathBuf::from)
            .unwrap_or_else(|_| home.join(".claude")),
        env::var("CODEX_HOME")
            .map(PathBuf::from)
            .unwrap_or_else(|_| home.join(".codex")),
        home.join(".pi"),
        home.join(".claude.json"),
    ];

    candidates.into_iter().filter(|p| p.exists()).collect()
}