Function cbm_app_config_dir

src/foundation/platform.c:462–492

/* ── App config directories (cross-platform) ────────── */

const char *cbm_app_config_dir(void) {
    static CBM_TLS char buf[CBM_SZ_1K];
    char tmp[CBM_SZ_256] = "";
#ifdef _WIN32
    cbm_safe_getenv("APPDATA", tmp, sizeof(tmp), NULL);
    if (tmp[0]) {
        snprintf(buf, sizeof(buf), "%s", tmp);
        cbm_normalize_path_sep(buf);
        return buf;
    }
    const char *home = cbm_get_home_dir();
    if (home) {
        snprintf(buf, sizeof(buf), "%s/AppData/Roaming", home);
        return buf;
    }
    return NULL;
#else
    /* Linux: XDG_CONFIG_HOME or ~/.config */
    cbm_safe_getenv("XDG_CONFIG_HOME", tmp, sizeof(tmp), NULL);
    if (tmp[0]) {
        snprintf(buf, sizeof(buf), "%s", tmp);
        return buf;
    }
    const char *home = cbm_get_home_dir();
    if (home) {
        snprintf(buf, sizeof(buf), "%s/.config", home);
        return buf;
    }
    return NULL;
#endif /* _WIN32 */
}

const char *cbm_app_local_dir(void) {
#ifdef _WIN32