fix syntax, remove 60s, poll 15s, kernel logs, suppress 404 noise

fix: python json config (no heredoc), fallback http server on 8080

fix: sync_hub clean rewrite, openclaw password key, 7b model, sleep infinity keepalive

fix: sync_hub syntax, openclaw password key, is_private bool, remove double logging, 14b model

clean: full pipeline, no secrets in history