updated plugin refactor and added FTP and SCP plugins , also hydrusnetwork plugin migration

cmdlet/add_relationship.py

@@ -9,9 +9,9 @@ import sys
 
 from SYS.logger import log
 from SYS.item_accessors import get_sha256_hex, get_store_name
+from ProviderCore.registry import get_plugin
 
 from SYS import pipeline as ctx
-from API import HydrusNetwork as hydrus_wrapper
 from . import _shared as sh
 
 Cmdlet = sh.Cmdlet
@@ -617,16 +617,20 @@ def _run(result: Any, _args: Sequence[str], config: Dict[str, Any]) -> int:
     # - If no store is specified, use the default Hydrus client.
     # NOTE: When a store is specified, we do not fall back to a global/default Hydrus client.
     hydrus_client = None
+    hydrus_provider = get_plugin("hydrusnetwork", config)
     if store_name and (not is_folder_store) and backend is not None:
         try:
-            candidate = getattr(backend, "_client", None)
-            if candidate is not None and hasattr(candidate, "set_relationship"):
-                hydrus_client = candidate
+            if hydrus_provider is not None:
+                hydrus_client = hydrus_provider.get_client(
+                    store_name=str(store_name),
+                    allow_default=False,
+                )
         except Exception:
             hydrus_client = None
     elif not store_name:
         try:
-            hydrus_client = hydrus_wrapper.get_client(config)
+            if hydrus_provider is not None:
+                hydrus_client = hydrus_provider.get_client()
         except Exception:
             hydrus_client = None
 
@@ -1049,8 +1053,9 @@ def _run(result: Any, _args: Sequence[str], config: Dict[str, Any]) -> int:
         return 1
 
     # Build Hydrus client
+    hydrus_provider = get_plugin("hydrusnetwork", config)
     try:
-        hydrus_client = hydrus_wrapper.get_client(config)
+        hydrus_client = hydrus_provider.get_client() if hydrus_provider is not None else None
     except Exception as exc:
         log(f"Hydrus client unavailable: {exc}", file=sys.stderr)
         return 1