fix: search empty results + extract error 408 (v0.3.3)

Bug 1 — search::start folder_path format (already fixed in 314fae9):
  json.dumps([path]) is confirmed correct per official Synology API docs
  and multiple independent implementations (N4S4/synology-api, kwent/syno).
  Poll-loop last-non-empty guard (if current_files:) is also in place.
  No further change needed for Bug 1.

Bug 2 — extract::start wrong parameter key:
  The previous fix attempt renamed "file_path" → "path", which was wrong.
  Official API docs and independent implementations confirm the key is
  "file_path". The json.dumps() wrapping on file_path and dest_folder_path
  was already correct. Reverted the key rename.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "mcp-synology-filestation"
-version = "0.3.2"
+version = "0.3.3"
 description = "MCP server for Synology FileStation"
 requires-python = ">=3.12"
 dependencies = [

src/mcp_synology_filestation/__init__.py

@@ -1,3 +1,3 @@
 """MCP server for Synology FileStation."""
 
-__version__ = "0.3.2"
+__version__ = "0.3.3"

src/mcp_synology_filestation/tools/filestation.py

@@ -845,7 +845,7 @@ def register_filestation(
                 "start",
                 version=2,
                 params={
-                    "path": json.dumps(file_path),
+                    "file_path": json.dumps(file_path),
                     "dest_folder_path": json.dumps(dest_folder_path),
                     "overwrite": "true" if overwrite else "false",
                     "keep_dir": "true" if keep_dir else "false",

tests/test_tools_filestation.py

@@ -1353,7 +1353,7 @@ async def test_extract_success(config: AppConfig) -> None:
     assert start_call[0][1] == "start"
     assert start_call[1]["version"] == 2
     p = start_call[1]["params"]
-    assert json.loads(p["path"]) == "/backup/archive.zip"
+    assert json.loads(p["file_path"]) == "/backup/archive.zip"
     assert json.loads(p["dest_folder_path"]) == "/data/extracted"
     assert p["overwrite"] == "false"
     assert p["keep_dir"] == "true"