Function cbm_claude_user_root

src/cli/cli.c:1138–1150

Resolve the parent dir containing `.claude.json` (Claude Code's user config file). * Honors $CLAUDE_CONFIG_DIR; falls back to "$home_dir". */

/* Resolve the parent dir containing `.claude.json` (Claude Code's user config file).
 * Honors $CLAUDE_CONFIG_DIR; falls back to "$home_dir". */
static void cbm_claude_user_root(const char *home_dir, char *out, size_t out_sz) {
    if (out_sz == 0) {
        return;
    }
    out[0] = '\0';
    char env_buf[CLI_BUF_1K];
    const char *env = cbm_safe_getenv("CLAUDE_CONFIG_DIR", env_buf, sizeof(env_buf), NULL);
    if (env && env[0]) {
        snprintf(out, out_sz, "%s", env);
    } else if (home_dir && home_dir[0]) {
        snprintf(out, out_sz, "%s", home_dir);
    }
}

/* Build the hook command string written into Claude Code's settings.json.
 * Honors $CLAUDE_CONFIG_DIR. When CLAUDE_CONFIG_DIR is unset, preserves the