Fixed download sizes and directory highlighting

Co-Authored-By: Claude Opus 5.5 <[email protected]>

Client/Sources.py

@@ -435,8 +435,10 @@ class ServerSource(Source):
         Done = {**Params, "UploadId": UploadId, "TotalChunks": TotalChunks, "FileName": LocalFile.name}
         return self._Json("POST", "/upload/complete", params=Done)["Saved"]
 
-    def Download(self, Root: str, RelativePath: str, Destination: Path) -> None:
-        """A file as-is, a directory as a .zip (the server builds it)."""
+    def Download(self, Root: str, RelativePath: str, Destination: Path,
+                 OnProgress: Optional[Callable[[int, int], None]] = None) -> None:
+        """A file as-is, a directory as a .zip (the server builds it).
+        OnProgress(BytesReceived, TotalBytes) as it arrives (Total 0 if unknown)."""
         if not self.Url:
             raise SourceError("No server address yet.")
         Partial = Destination.with_name(Destination.name + ".part")
@@ -445,9 +447,14 @@ class ServerSource(Source):
                 if not Response.is_success:
                     Response.read()
                     raise SourceError(f"Download failed: {Response.status_code} {Response.reason_phrase}", Response.status_code)
+                Total = int(Response.headers.get("Content-Length") or 0)
+                Received = 0
                 with Partial.open("wb") as Handle:
                     for Chunk in Response.iter_bytes(1024 * 1024):
                         Handle.write(Chunk)
+                        Received += len(Chunk)
+                        if OnProgress:
+                            OnProgress(Received, Total)
             Partial.replace(Destination)
         except httpx.HTTPError as Error:
             Partial.unlink(missing_ok=True)