- Providers can now expose named config instances under `provider.<plugin>.<instance>` and cmdlets can target them with `-instance <name>`; plugin-mode `-store <name>` remains a compatibility alias while store-backed flows still use real backend stores.
- The walkthrough is in [docs/scp_plugin_tutorial.md](docs/scp_plugin_tutorial.md) and shows `search-file -plugin scp -instance <name>`, SSH-backed directory drill-in, file download routing, `@N | add-file -store ...`, and `add-file -plugin scp -instance <name>` uploads.
- The repo now also includes a built-in HydrusNetwork provider in [plugins/hydrusnetwork/__init__.py](plugins/hydrusnetwork/__init__.py). Its Hydrus client API now lives alongside it in [plugins/hydrusnetwork/api.py](plugins/hydrusnetwork/api.py), while [API/HydrusNetwork.py](API/HydrusNetwork.py) remains a compatibility shim. The provider delegates to configured `store.hydrusnetwork.*` backends so Hydrus features can be reached through the normal plugin registry without cmdlets importing Hydrus modules directly.