- dlphelper/globalstore.py: ~/.local/share/dlphelper/urls.json records every
successfully downloaded URL once, regardless of OUT_DIR - reposts in other
channels and re-runs of moved channels no longer re-download
- --subs subscriptions.json: batch mode over a configurable channel list;
re-exports each channel by default (new links get picked up), --no-fresh
reuses cached exports
- --assume-done <file>: manual import step that marks old URL lists as done
in the global store (deliberate, unverified, never automatic)
- lazy downloader startup: no gofile guest account / no curl runs when all
URLs are already done; token prompt skipped in --urls-file mode
- write_failed_urls creates OUT_DIR if needed
